Sizing A Ground Heat Exchanger for Installation

Ground Heat Exchanger (GHE) is the key to the efficiency of a Ground Source Heat Pump (GSHP). However, GHE is not standardized as other parts of the GSHP. It is basically a bunch of tubes that need to be properly sized and burred in the ground. Improperly sized GHE can lead to chocked flow and higher pump cost or stagnate flow and less heat transfer. This article lays out the basic steps for sizing a ground heat exchanger for installation.

Sizing-Ground-Heat-Exchanger

Sizing-Ground-Heat-Exchanger

Sizing methods and data of GHE are mostly scattered in installation manuals and other documentations, such as the International Ground Source Heat Pump Association Installation Guide and others listed in the references below. There are also manufacturers’ manuals and several software programs you can use to facilitate the design calculations.

Below are the general steps needed to size a Ground Heat Exchanger. Understand these basic factors will help you to perform the calculation and get a better result. Some of the steps are involved and assumption may have to be made. Once the assumed value is found, repeat the calculation to get a better result.

  • The indoor ground fluid temperature. This number can be found from the heat pump unit. The heat pump should specify what this ground fluid temperature is supposed to be inside the unit when the heat pump is used for cooling and heating. Yes, there are two different values, one for cooling, one for heating.
  • Earth temperature where the tubes to be burred. You may choose to use the yearly average, or the coldest temperature to ensure enough heating in winter, or the hottest temperature to ensure enough cooling in summer. Estimation may be OK or you can dig a hole to the depth where you are going to install the tubes. Drop a thermometer to the hole, let it stay there for 5 minute and pull it out to read the temperature immediately.
  • Evaluate the soil properties. Wet and fine soil will transfer heat better than dry and sandy soil. Use fine mud outside tubes in installation will help. Calculate the thermal resistances of the soil and the tube wall. The smaller the sum of the resistances, the closer the tube fluid temperature will be to the ground temperature.
  • Calculate the temperature differences between the indoor fluid and the in ground fluid. Again there two values for this calculation one is for cooling and the other is for heating. Compare these two values to see which is smaller. Hereafter, we will only use the smaller value as the fluid temperature difference and ignore the bigger value, since it will be automatically satisfied if the smaller value is covered in the design.
  • Choose the fluid and find their properties. It should be mostly water, but some anti-freezing agent if you cannot avoid freezing temperature. Some anti-freezer may lover the heat capacity and heat transfer coefficient.
  • Find the BTU (or thermal) capacity of the heat pump unit. Divide the thermal capacity by the fluid temperature difference and the fluid heat capacity will yield the fluid flow rate needed for the GHE.
    Find available tube sizes and calculate the cross section inside the tubes. Divide the fluid flow rate obtained above by the cross section will produce the fluid velocity. Choose the tube size that will give you the recommended fluid velocity inside the ground tubes. These velocity should be preferred with 2 to 8 ft/sec. That is the tube you are going to use for the GHE.
  • With the fluid velocity, the soil thermal resistance, the thermal capacity derived above, you can calculate the total heat exchange surfaces needed. Divide this total surface by the circumference of the tube will give you the total length of the tube needed.

Please use the comment box below to document your input and questions.

References:

GHPS Design and Installation Standards

GROUND-SOURCE HEAT PUMP PROJECT ANALYSIS – Canada

Geotherm Heat Pump Manual — NYC

Analysis of Ground Heat Exchangers for Geothermal Heat Pumps

Analysis of Ground Coupled Heat Exchanger by Brett Vincent Walsh

Horizontal Ground Heat Exchanger Design for Ground Coupled Heat Pumps

Example of DIY Heat Pump Installations

DIY Geothermal Heat Exchangers for Heat Pumps The following video leads to a DIY Geothermal Journal. If you have such a plan or record, please add link through a comment below. We will visit your page and possibly have it introduced here.

DIY Geothermal Heat Exchangers for Heat Pumps

Heat pump performances are closely linked to the outdoor heat exchanger used. Geothermal heat exchangers can boost the performances substantially because it is warmer than air in winter and cooler than air in summer. However, the installation can be very costly by an outsider. This article discusses why a DIY geothermal heat exchanger can be a perfect DIY project for heat pumps

Advantages of Heat Pumps

Heat pumps are better than air conditioners because they can pump heat out and into a home at different seasons. Heat pumps are better than furnaces because they can deliver many times more heat energy than the energy used. The ratio of the heat energy delivered to the energy used is called Coefficient Of Performance (COP). While no other equipment can have a COP greater than 1.0. Commercially available heat pumps have COP around 4.0 for the 2013 Energy Star units.

Compare the Heat Pumps

Energy Star Heat Pumps

Let’s take a look of two systems of the 2013 Energy Star, both made by Carrier in this screenshot with labels:

  • (1G) The average COP of Geothermal Heat Pumps (GHP) is almost exactly 4. That means deliver 4 times as much heat as the same amount of electricity can produce in a resistance heater.
  • (1A) The counterpart of COP for Air-source Heat Pumps (AHP) is SHPF. Since SHPF = 3.413 x COP, we can see, if converted, the AHP SHPF will result in smaller COP numbers than those for the GHP.
  • (2) The EER numbers of the AHP are also smaller than those of the GHP. EER (Energy Efficient Ratio) is for a heat pump used for cooling operation verses COP is for heating.
  • (3) For equal Capacity, other numbers of the GHP are also generally better than those of the AHP. For example, the Saving over Federal Minimum is 44% vs. 38%.
  • (4) The Lifetime Costs are for different years. Estimated lifetime for AHP is 12 years while that for GHP is 15 years.
  • (5A) Indoor units and installation parts are not shown but should be included. Installation cost could be about $1000 to $2000 by a contractor.
  • (5G) Indoor units and installation for GHP could be the same as AHP. Installation of a geothermal heat exchanger could cost another $1000 to $3000 more by a contractor.

What are the Geothermal Heat Exchangers Look Like

Although many populated regions experience seasonal temperature extremes, a few feet below the earth’s surface the geothermal remains at a relatively constant temperature. Like a cave, the underground temperature is warmer than the air above it during the winter and cooler than the air in the summer.

GHP take advantage of this by exchanging heat with the earth through a geothermal heat exchanger. There are approximately 50,000 geothermal heat pumps installations in the United States each year.

Geothermal heat exchanger types

Fig.2 Geothermal heat exchanger types


As shown in Fig.2, a geothermal heat exchanger is basically a loop of tubes buried underground or immersed underwater. It can be horizontal for easy digging or vertical if surface area is limited. If a water body like a pond or a lake is nearby, you can take advantage of that. Not only you do not have to dig, but also water transfers heat better than soil resulting a short loop. Even better heat transfer and shorter loop is the open loop like shown in the image if you have soft (means no much calcium) underground water.

Why DIY for the Geothermal Heat Exchangers

Most people love the above heat pump advantages. Also in comparison with furnaces, heat pumps do not draft moister out of the home creating dry-skin problems. Heat pumps have no odor or risk of carbon monoxide.

However, heat pumps have very high startup costs. While a heat pump will probably save money in the long run, the installation costs may prevent many homeowners from choosing one. An installation contract could be run over budget easily.

To have the advantages of heat pumps without the high cost, Do-It-Yourself may be the best way to go:

  1. Bury soft polyethylene plastic tubing underground is all needed. No structure modification is needed like indoor plumbing would.
  2. You’ll use less equipment and have less restrictions than a contractor. You’ll be working on your hours, not appointed time with a contractor.
  3. Not many contractors are experts in underground heat exchangers. You may just as good as them.
  4. You’ll choose the best location of moist soil for better heat transfer and confined area for stable ground temperature not the easiest location to dig.
  5. You’ll pay more attention to the quality of the connections and the contact of the tubing surfaces to the earth. Tubing areas exposed to air will be wasted because air does not conduct heat well. Once buried, it would be very hard to fix these air pockets and leaking connections.
  6. There are so many choices and variations for each installation. Understanding the processes may help you manage the contract if you decided to hire a contractor instead.

Example of DIY Heat Pump Installations

DIY Geothermal Heat Exchangers for Heat Pumps The following video leads to a DIY Geothermal Journal. If you have such a plan or record, please add link through a comment below. We will visit your page and possibly have it introduced here.
Internet Directory Listing

Warnings About Portable Air Conditioners

Warning About Portable Air Conditioners

Warning About Portable Air Conditioners

Here are some warnings about portable air conditioners to help you to be aware of their low energy efficiency rating when purchasing a new air conditioner.  If you already have a portable air conditioner or if a portable air conditioner is your only option to get some cooling, these fair warnings may help you understand your air conditioner and make better use of it. We will look in details why portable air conditioners are taking more room, wasting more power, producing more noise, and costing more money. If you are in a hurry, just looked the colored text, bookmark this page, and come back later when you have time.

Warning about “Portable”

An major claim of portable air conditioners is that they do not need installation and they are portable. On the internet or in the showrooms, we see portable air conditioners neatly displayed without a hose most of the time. In reality all air conditioners need to pass heat to the outside. Central air conditioners and window air conditioners use Freon to carry the heat to the outdoor coils. Fans are used to drive air to cool the outdoor coils.

Portable-Air-Conditioner-Installations

A portable air conditioner brings the outdoor coil inside the room but still need to cool the coil. The coil passes the heat to air then the hot air has to be sent out the house. These pictures show portable air conditioners in actual use. They are less prettier than the units themselves – everyone has at least one bulky hose connected to the outside. Tip: The longer the total hosing the more power will be wasted to drive air through the hose.

Portable air conditioners need venting kits installed almost the same way as window air conditioners. It is true that the venting kit is much smaller than a window unit. However, you may run into the same installation problems as installing window air conditioners. Do you like the installations in the pictures? Think what the installation will look like in your house when deciding the purchase.

Once installed like the above, “Portable” is questionable. To move the portable air conditioner to different rooms, we need the venting kit installed in every room or re-install the venting kit for every move. Small wheels may not move well on carpets. Will the move be practical for you? Will the move be easier than with a window air conditioner? Tip: A window air conditioner is more efficient and weigh less as you see below.

Warning on Lower Energy Efficiency

The cooling capacity of an air conditioner is defined by its BTU/h rating. The BTU/h number indicates the amount of heat the air conditioner can remove from a room each hour. A hot climate will need more heat to be removed from a room to feel cool. A cooler room will also need more heat to be removed for the deeper cooling.

Here are recommendations from HomeDepot.
air_conditioner_btu_calculator
We can see from these two tables, comparable portable units will cool less space than window units. Take the recommended 12,000 BTU units for example, a portable air conditioner is recommended for a 400 square feet room where a window unit is recommended for a 550 square feet room. In other word, for the same sized room, we will need a higher BTU portable unit.

The power needed to run an air conditioner is tied to its EER (Energy Efficiency Rating). Also at HomeDepot, the highest EER of portable air conditioners is 9.5 like the Haier CPN14XH9. For this 14,000 BTU unit to work, 14,000 / 9.5 = 1,473 Watt of power will be consumed. All consumed power will become waste heat. 1,473 Watt will become 1,473 x 3.412 = 5,028 BTU (per hour) waste heat. Tip: For a 9.5 EER unit, the wasted heat is almost exactly 30% of the BTU number.

Here is a quote from ConsumerReports.org 2008 .

While portable air conditioners might be convenient, those we tested delivered only about half of their cooling capacity—that means they operated with an energy-efficiency ratio (EER) of about 5 or 6. Compare that with the minimum EER of just under 10 for the window air conditioners we’ve recently test (we tested window models with an EER as high as 12).

Central air units and window units have most of this power consumed outside the window and the waste heat is dissipated to the outside air. A portable air conditioner has all the power consumed inside the house. All consumed power turns to about 30% more heat that has to be removed from the room. This percentage will go higher for a lower EER unit or for a portable air conditioner whose EER has dropped because blocked air flow or dust on the coils.

Warning on exhausting cool air out of the room

Another hidden problem is inherent with single hose portable air conditioners. They suck air from the room and dump it outside. Besides cooling, a single hose portable air conditioner creates a vacuum for the room it is in. The vacuum may not be measureable if the room is not air-tight. The more air-tight the room is the higher the vacuum will be.

portable-air-conditioner-flow-diagramThe vacuum enable air from elsewhere to leak into the room for the same amount as the exhausted air, as shown in this picture. If the air is leaked in from outside, it will be humid and hot. If the air is from other rooms of the house, outside hot air will leak into those rooms. So, we may get some cooling near the portable air conditioner but more heat and humidity will come to the house, as seen in this image.

The tricky thing is that it may take an hour or two to vacuum out the cool air from the surrounding rooms. In the first couple hours, we may feel pretty good about the air conditioner. We may never thought the other rooms are getting hotter because the use of a single hose air conditioner. That is why we put the word “Warnings” in the title of this article.

To be fair, due hose portable air conditioners do not have this problem. The trade-off is another hose. These hoses will be vibrating in use and could break easily. Any leak in these hoses or their connections will result in dumping room air outside in the same manner as a single hose portable air conditioner.

The more leaks, heat leaks or air leaks, to the room the more heat need to be removed from the room. Hence, the higher BTU rating is needed. To achieve the same amount of cooling, a single hose portable air conditioner needs a substantially higher BTU rating. The higher the BTU rating, the more power an air conditioner will consume. All the consumed power will turn into heat. That heat also needs to be exhausted through the hose for a portable air conditioner. More heat needs a bigger fan to drive more air out the hose. A bigger fan turns more power to waste heat inside the house.

Warning about condensate, noise, and space

Portable-Air-Conditioner-Condensate-Removal As air is cooled, moisture in the air will condense to water. A portable air conditioner may fill its condensate tank quickly in a humid day. Watch out for condensate overflow or drips. Tip: When buying a portable A/C, check if it has the feature to evaporate the condensate with the exhaust air like shown in this image. In comparison, a window air conditioner is designed to have its condensate pan tilted down towards the outside. Any condensate will flow to the outside half of the air conditioner. The condensate evaporate into the hot outside air without being noticed most of the time.

The most noisy part of an air conditioner is the compressor. For central air unit, the compressor is in the outside unit. For window unit, the compressor is outside the window. For the portable air conditioner, the compressor is inside the room in the cooled area. The compressor is also bigger because of the higher BTU rating cited above. Any loose parts like the hoses could resonant and amplify the noise. Tip: A soft pad under the unit will reduce the noise.
portable-air-conditioner-installation
A portable air conditioner need about 18 inches of space on each side for it to breath as shown in this image of an installation guide. Put your hand about that distance away from the unit, if you feel air flow though your hand, that place should be open for air flow. Any blockage of air flow to or from the unit will lower the EER and reduce the cooling. Do not put the unit too close to a wall, a sofa, or a bed. Make sure you have the space before you buy the unit. Tip: To achieve the full EER, a portable air conditioner need a lot more space than its physical dimensions.

Conclusion

BTU rating is the amount of heat an air conditioner can remove from a room. For a duel hose portable air conditioner, about 30% of that heat is the waste heat produced by the unit itself. For single hose portable air conditioner, about 50% of that heat is produced by the unit or sucked in by the unit from outside the house. In comparison, a window unit or a central air unit only has waste heat from the indoor fan for removal that could be less than 5%.

Attachments

2008 Standard for Performance Rating of Unitary Air-Conditioning & Air-Source Heat Pump Equipment
Internet Directory Listing
Cooling Load Calculations and-Principles

Report on Google Analytics Queries – Data and Questions

Here is my report on Google Analytics queries with data and questions for heatExch.com which is one month old now.

Report on Google Analytics Queries - Data and Questions

Report on Google Analytics Queries – Data and Questions


To see a report like this image for your website, Go to your Google Analytics account. Click Reporting on the orange bar >Traffic Sources >Search Engine Optimization >Queries. Click the tabs in the table to sort the data in different orders. My table is sorted by Clicks. I moved #13 and #14 up to talk about them.

First of all, I’d like you experts to help me to analyze this. How reliable are these data? If this is the real picture, I’ll be very happy. My site is only a month old and I am not good at it. Follow the arrows from the big question mark. Google Webmaster Tools reported much lower numbers. I know Google WM Tools is more delayed, but not this much.
Now suppose these data are reliable. Here are my interpretations about the results. Again correct or guide me if you will.

Target and fire

You may miss the target but the accidental hits may just as good. From the very beginning I am targeting my site to “Heat Exchangers”. I got 150 impressions, 5 clicks at average position 290. I use “Heat Transfer” only to explain “Heat Exchangers”, but that phrase fetched 5,500 impressions, 90 clicks at average position 3.5. One know reason is that I had an image with alter tag “Heat Transfer” that shown well. Then, the clicks may be just went to Google Image search, not to my website (tell me in a Comment if you thinks so).
I remember Pat said “Security Guard Training” get about half of the traffic. That is a very good targeting. I enjoy the accident hits but don’t want to be a lousy shooter. Give me more tips on how to target better please.

Does Google Know What You Know?

Some of the queries are totally unexpected. Aerofin is a company and brand name that I am familiar with. I used some of their images and mentioned the name a few times. It got 5 clicks. Does Google know that I know Aerofin? Probably not. Knowing Aerofin helps me use it better in my webpage. That might be a reason.
Oh, there may be a problem. Looking at the data again… … Of the 317 clicks, on query got 90, another got 12, 41 queries got 5 click each. No query got 1 or 2 clicks. That does not look right. May be Google starts counting click with 5. What your click data look like?

The Ranks Change Are Changing

My first know query was “Heat Exchanger Animation” as reported here
Heat Exchanger Animation Ranked 1.0 on Google in 20 Days. That query is now at an average position of 38 with 5 clicks. I only see the image ranked on top of the first page. I have not seen the actual webpage snip shown with this keyword yet.

Is 100% CTR Believable?

Look #5 and #9. The CTR are 100%. Now I think the answer is NO. They are both form 5 divided by 5. As said above 5 might be the minimum number to count. I am not as excited as I was making the image. Probably I should not count the numbers until they moved about 5. However, I think I got some good questions here for you to talk about. Your comments would be helpful for newbie like myself. Thanks.

Heat Exchanger Animation Ranked 1.0 on Google in 20 Days.

To my surprise, my keyword Heat Exchanger Animation ranked 1.0 on Google in 20 days after I started the website. There are many SEO techniques but this is not one of them. It is more like an accident. Then, think it again, there is some reason that I would like to share with you. If you are in a hurry, just looked the colored the text, bookmark this page, and come back later when you have time for more details.

I call myself an Old Newbie. I registered a domain and web site on 5/19/2013 and changed that to heatExch.com 3 days later. (Thank you BlueHost.com for make this change for free. I also got the domain name for FREE with a 3 year contract of $3.99/mo from BlueHost.com. Right now it is $4.99 (Monday morning) and ask for the FREE domain name. Tip: BlueHost.com‘s regular low price is $6.99 and I feel they usually run promotions on less busy days like Sundays or Holidays.

Google Webmaster Query Keyword Data

Although I made about a dozen pages targeting Heat Exchanger with some tails, no page is aimed on Heat Exchanger Animation. I spent most of my time in these 20 days setting up the themes, the menus, the plugs, and other things. Tip: BlueHost.com contains a lot of plugins in the server. From Dashboard> Plugins> Add New to search and install. I also setup my Google Analytics and Google Webmaster Tools. A lot of work. The good thing is you can get all of these for FREE. Tip: To see your search engine keyword ranking, log in your Google Webmaster Tools. From Dashboard> Traffic> Search Queries to see an image like mine.

Checking my Webmaster Tools yesterday (6/9/2013) I saw Heat Exchanger Animation was listed as Avg.position 1.0, as shown in this screenshot. I was amazed and went to Google search to check it. I did not see my domain in the search result. This happened before for the Heat Exchanger Gasket query, but the TEMA Standard query was confirmed. See these two queries listed in the screen shot. Tip: Webmaster Tools needs proper setup and the data can be a day or two late.

Heat Exchanger Animation Ranked 1.0 on Google

So, I decided to make a better targeting on Heat Exchanger Animation. I went back to Google again. This time I noticed an image from my website is right on top of the search result!! It is the heat exchanger image on my home page with GIF animation, see this screenshot. Then I remembered the Alter tag of that image is Heat Exchanger Flow Animation. That is probably how Google indexed it. And when adding images to the search results, this image was selected. Great! Tip: There is less competition in images than webpages and you can win with a good image.

I searched Google again this morning for Heat Exchanger Animation. My image is still there. It look like a real deal! So I decided to share with you. I know a lot of you are trying to start a website or a blog. If you already started, hope this can help you get better ranking on Google. If you are going to start, I recommend BlueHost.com. BlueHost.com hosts both webpages and blog posts in one website so you can use static pages and dynamic blogs whenever you want to. Tip: Lower your starting cost but use both webpages and blogs for growth.

As adding image to your webpage or blog, BlueHost.com allows us to insert an image or a gallery directly from our computer. Images are eye candy, visual, very effective for quick browsing. So I have a lot images and screenshots in my pages. Tip: Think how images get indexed in search engines. All the text associated with your image may not be shown to a user, but they are important to search engines.

Home Air Conditioner Tips

If you are looking for home air conditioner tips or summer heat management, you have come to the right place. Perry Ning, EzineArticles Basic AuthorWe just compiled all the knowledge to keep your cool and save money for this summer. We are explaining everything in detail. If you’d like just a quick brows, look for the colored subtitles and tips. Tip: Your working a little more on the AC will make the AC work a lot less in providing you the cool. Remember the AC charges the electrical bill by the minutes it works.

How AC Works:

An air conditioner has an indoor coil to cool the air and an outdoor coil to dump the heat. Freon circulates between the two coils. The driving pressure of the Freon come from the compressor. Home Air Conditioner Tips Freon evaporates inside the indoor coil and condenses inside the outdoor coil. Tip: Freon can escape because it is vapor under pressure. Leaking of Freon will reduce the cool and cost more money to run the AC.

Heat Transfer:

Freon bring heat from inside to outside in the form of latent heat. The coils need to pass the heat from and to air. Air is thousands times lower in heat transfer capacity than the evaporating or condensing Freon. Manufacturers put fins on the coils to increase contact with air and use fans to drive more air through the coils. Still, the air side is the bottle neck. Any dirt on the coil surfaces or blockage of air flow will make it worse. Tip: Think of heat. The easier we let the AC to pass it, the less we need to subject to it.

Taking Precautions for Safety:

Avoid damaging any tubing or wiring. Using goggles and gloves. Keep parts and screws in orderly places. Make sure you can put the pieces back as they were. If you do not feel comfortable or not sure about a process, do not attempt it. Annual AC tune-ups are recommended by the U.S. Department of Energy. Many local companies offer such services. Check to see if it is better for them to do it. Tip: Check your air conditioner manual to see what maintenance is needed and how to do it.
before_summer_hvac

Clean the Airways:

The coils need good air flow to pass heat. If plants and shrubs have grown around your outdoor unit. Cut them down. If leaves and debris have gotten in the unit clean them out. If you have things placed near the AC, move them away.

Clean the AC off Dust:

Dust on the coil surfaces will reduce heat transfer. Dust on the fan blades will slow down the fan. Open the lid or the cover to check inside the AC. Vacuum or blow any dust off the coil surfaces. Clean dust of fan blades will save money as well. Check to see if any activities of spiders or ants near the bottom of the outdoor unit.

Clean Or Replace the Filter:

Look the front of the coils for the filter(s). Take the air filter out and clean it. If the filter looks dirty and clogged after shaking of the dust, it is a good idea to replace it. Dirty air filter can actually suffocate your air conditioner. Your AC has to run longer time to make up the cooling. Tip: Clogged filter may cost more on electrical bill than a filter each year.

Common Sense Checking:

Always pay attention to unusual noise. Are the fans and the compressor humming like air-conditioning-repair they used to? Do you feel the cool air coming too late and too little? Follow all metal surfaces and pipelines to see if any insulation is broken. If there is any rust. Some rust outside a thick part may not be a big problem. You may slow down the rust with rust-inhabit paint if necessary. Reducing moisture around the parts will slow down rust. Tip: You’ll find more rust on the shadow side than the sunny side of a pipe.

Freon Leakage and Recharge:

check-freon-leak

Freon will manage to diffuse over time or rush out if it finds a leak. You may check if there is a problem with Freon like shown in this video. You need the AC to run more than 10 min to do this. A hot and humid day is a better time to check. Basically you find a metal surface of the insulated line and feel if it is cold. If you do not get cooling and the line is not cold, the AC is out of Freon. Before refill, make sure if there is a leak you need to fix. Tip: A sudden loss of cooling will not be fixed by just filling the Freon.

Replacement Cost:

Here is a Federal Tax Credits for Consumer Energy Efficiency. Here is a good calculator to give you a ballpark comparison to a newer system. There would be more costs than this simple calculation. Tip: If you can keep your family cool this summer and replacement is beneficial, do it later in a cooler season may cost less.

Help Your AC to Help You:

If you have a door or window open, the AC has to cool down all the hot air that come to the house. Try to minimize air leak into or out of the house. If you installed the AC on a window, make sure it is sealed off air in the window opening. Is your outdoor unit on a hot spot? Tip: Creating some shade but not block air flow for the outdoor unit will lower the air temperature and save money.

Niche Site Due 2 Application

Hi Pat,
Here is my Niche Site Due 2 Application to join the MLG. My answers are:
1. What is the target keyword you selected and why did you choose it?
The keyword I selected is “Heat Exchanger” and the reasons are:
2. Why do you REALLY want to become a part of the Mastermind Learning Group?
Because:
  • It is a really great learning process – I have learnt a lot and want to learn more from you
  • My website will help my career and others – putting all I know and learning in live webpages is much better than books and notebooks.
  • As I am looking towards retirement, this will fit well with my internet use and some income would be nice
  • I’ll add age variations to your MLG – then you can say: If old Perry can do it, everybody can do it.
3. What is your favorite childhood memory, and why?

I made a transistor radio in a Chinese village where we did not have electricity. I followed the instructions in my textbook and bagged really hard for my father to buy parts for me – he could not afford new transistors. So my father found a repair shop and got the replaced parts for me.  My teacher allowed me to use the solder iron at school. I tried every dead parts and finial got the radio working.  

4. You and me end up sitting next to each other on a 3-hour bus ride somewhere. I’m a great listener. Besides anything business or blogging related, what could you talk to me about for the entire ride?
I’ll plea until you accept me to the MLG. No, that will not be cool. We’ll start with small talks to see what y
ou are interested, learn from you whatever you may like to share and provide if I can.  The goal would be to build a friendship and to leave a good memory for both of us.
5. What’s an interesting habit you have?
Niche Site Due 2 Application
Internet has become my habit besides working out.  Discovering and learning new things are  very exciting.

Thank you sincerely for taking us along.  Accepted to the MLG or not, I’ll follow you.

Best Regards,  Perry Ning  

Heat Exchanger is Selected as My Niche Keyword

Following Pat’s guidance, heat exchanger is selected as my niche keyword. I am not sure if I am the first one to announce the keyword. If that is true, I understand that I struggled but did not spend as much time as others. I really wish I could go all the nine yard like Pat laid out using elegant tools like the LTP. Anyway, here is why and how I settled on “heat exchanger”.

The phrase “heat exchanger” fits some of Pat’s keyword criteria. It is my passion – I worked with heat exchangers for more than 20 years as an engineer. I love this kind of equipment. It will pass the grandma test. If I do well with this website, it can be useful for people to learn and make better use of heat exchangers. Will it be a money maker? I am not sure.
Heat Exchanger is Selected as My Niche Keyword

Moonsy-MozRank

GoogleRank
These screenshots shows the numbers from the Google Adwords, SMERush, and OpenSiteExplore. The exact local search is 6,600 with High Competition but low CPC of $1.88. In contrast, “Heat Energy” looks better because it is Low in competition but high CPC of $6.05. However, when I search on Google, I see a lot more ads on “heat exchanger” but no ads on “heat energy”. Could someone explain this to me? I am really confused.

The MozRank and the PR for the top 12 webpages are pretty high, 3, 4, 5 or higher. Wikipedia is the always the first page in search results. I may never be able to beat them and to get to number one. Would I still be able to get to the first page and get some click? I need some encouragement if you can help.

Then, why I stuck with this keyword and not do a thorough search like your guys? I think the search is very competitive, too. If there are some better keywords, your guys would have gotten them already. If I try a new territory that I know very little about, it could be even worse. Besides, I got a lot of other thing to catch up, such as learning to setup theme, menu, and SEO in WordPress.

So, am I okay with pouncing the ball on keyword search and get the game going? Do I have any chance to stay in the game with “heat exchanger”? If not, would that be possible to add longer tail after this keyword and get a smaller niche? I would really like your comments.

Thanks you in advance, Perry Ning

HeatExch.com Was Indexed by Google!

Pat Flynn showed how he can register a domain and finish first blog in 4 minutes at BlueHost.com. For me, it was more than 4 hours and I am glad I could do it at all. Then I spent 4 days setting up the theme and other stuff. It was exciting to see how these things work for you without much cost (I got the HeatExch.com domain for FREE with 3 year hosting plan at BlueHost.com for $3.99 a month), but frustrating when I could not figure out why it is not working for me. I did not want to give up and I could not think of anything else to do. So I keep trying.

Last night I Googled for “HeatExch”, to my amazement, my two poor blog posts were indexed by Google! The last post was “Heat Exchangers are Useful” and the one before that was “Hello World”. So, I thought of documenting that this morning and went back to Google. I saw the search results as this screenshot – it is unbelievable!

HeatExch-indexed-by-Google

To calm myself down, this only happens when I search “HeatExch” with the quotation marks to narrow down the results to 16,800. Without the quotation marks, there are 349,000 results and HeatExch is not in the first page. Anyway, looking over the screenshot, I feel lucky that I landed on the HeatExch domain name.

The search engine interprets HeatExch as Heat Exchangers and display related ads and search results. I am also happy there are a lot adds targeted to HeatExch and Heat Exchangers – meaning HeatExch could attract similar advertisers if it can get popular. It could be a big endeavor to make good webpages and blogs about Heat Exchanger and build up popularity.

Right now, Heat Exchangers fetches more than 5 million results with Wikipedia as #1, lytron.com #2 and eBay #3. It is a little too broad but not that much competition. I’ll keep targeting HeatExch and Heat Exchangers with tailing words such as design and repair and waiting for the next surprise.

Now I am very happy about my site. BlueHost.com hosts both webpages and blog posts in one website without additional cost, so you can use static pages and dynamic blogs whenever you want to. BlueHost.com also allowed me to switch my domain names without charge. Tip: Lower your starting cost but use both webpages and blogs for growth.

Heat Exchangers Are Useful

Heat Exchangers Are Useful.