Can Climate Change Be Minimized Using Air Conditioners?

by Kelly R. Smith

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Air conditioner farm on a rooftop
Air conditioner farm on a rooftop

This article was edited on 10/21/20.

What a question; it’s the proverbial killing of two birds with one stone. On the one hand, we could enjoy all the interior comfort we want and on the other hand, we could save the planet. Of course that would mean Al Gore would experience a loss of income as the Reigning King of climate change.

The Concept Of Generating Liquid Hydrocarbon Fuel From Air

Roland Dittmeyer, a chemical engineer at the Karlsruhe Institute of Technology in Germany posited this theory, recognizing that HVAC systems (Heating, Ventilation, and Air Conditioning) move a huge quantity of air. Consider this — they can recycle the entire air volume in an office building 5 or 10 times each hour (when the system is properly configured and maintained). Besides obviously cooling the air, the system also removes carbon dioxide and humidity from the air. It’s the carbon dioxide, the reputed villain of climate change, that we are concerned with from the global warming point of view.

The moisture is important as well. When both of these things are captured, the idea is to convert them first into hydrogen, and then perform a multi-step chemical process to convert the hydrogen into liquid hydrocarbon fuels. Dittmeter’s team calls this, “Personalized, localized and distributed, synthetic oil wells” in buildings or neighborhoods.

Although the science is promising, the team’s tone strikes me as somewhat utopian and Marxist as they go on to say this will enable people, “to take control and collectively manage global warming and climate change, rather than depending on the fossil power industrial behemoths.” That sounds like Bolshevik Bernie or AOC.

Problems With A/C to Hydrocarbon Models

  • The cost. A chemical engineer at Worcester Institute of Technology, Jennifer Wilcox, says, “The dominant capital cost is the solid adsorbent materials.” These are substances which carbon dioxide adheres to. In addition to the capital cost (equipment purchases), the primary energy cost is the heat necessary to recover the carbon dioxide from these materials post-capture.
  • The process is dangerous. Carbon monoxide and hydrogen are toxic and explosive. It could potentially be like docking the Hindenburg on the roof. Producing and holding quantities of the resulting petrochemicals in business and/or residential areas poses its own problems. There is a reason why petroleum and natural gas is stored in tank farms behind fences.

Is this promising technology? Certainly. But presently, it’s in the pie-in-the-sky development phase. The problems listed above will have to be solved before the process of using air conditioners to minimize climate change is feasible. In the meantime, we should keep forging away with new technology.



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About the Author:

Photo of Kelly R. SmithKelly R. Smith is an Air Force veteran and was a commercial carpenter for 20 years before returning to night school at the University of Houston where he earned a Bachelor’s Degree in Computer Science. After working at NASA for a few years, he went on to develop software for the transportation, financial, and energy-trading industries. He has been writing, in one capacity or another, since he could hold a pencil. As a freelance writer now, he specializes in producing articles and blog content for a variety of clients. His personal blog is at I Can Fix Up My Home Blog where he muses on many different topics.

How to Determine the Correct Size for a New HVAC System

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Servicing an HVAC Unit
Servicing an HVAC Unit

Homeowners today have a good selection of different types of HVAC systems to consider. The best type is usually determined by your environment. Swamp coolers are made just for use in hot dry locations. Central air conditioner and heaters work well for most of the country. Heat pumps are very efficient but are expensive to install. The list goes on and on. The thing they all have in common is that they should be properly sized for the structure they will serve.

Furnaces that are too large tend to cycle off and on continuously. A central system that is too large may be less effective at dehumidification than a correctly sized AC unit. And it goes without saying that a larger unit costs more going in. A too-small system works too hard to keep up. But a properly sized system will do the right job for the environment at maximum efficiency.

Contractors Shouldn’t Rely on Rule of Thumb

Too many contractors rely on “experience” or an “educated guess. Bad idea. It’s much better to use worksheets designed by the Air Conditioning Contractors of America (ACCA). They are far more accurate because they take into account individual actual conditions. These include the amount and type of insulation, the size of the home, the size and glazing type of windows, air leakage, lighting, and home appliances.

To make these calculations, the International Residential Code, which is the dominant building code in the U.S. should be followed. It requires that heating and cooling equipment be sized with the help of Manual J, or a similar approved methodology. However, the rule is too often ignored. Studies have demonstrated that heating and cooling equipment is far too often over-sized, often by as much as 200%.

So before you hire a contractor, this is one thing you should quiz him about. Does he follow this protocol (even though your local code may not require it)? After all, a new HVAC system is a big investment and it’s your investment, not his.

Other Ways to Determine HVAC Size

If you really want to be sure that all the factors are being figured correctly, do it yourself and follow Manual J. You will need to determine the U-factors of building components such as windows, doors, insulated walls, determine the “outdoor design temperature” for your area, take an estimate about airtightness, and finally use a heat-loss formula to determine how much energy in Btu your home loses through the building exterior.

You can also hire a pro. This might be a certified HERS rater, a mechanical engineer, or an energy consultant. You may be spending a bit more time and money up front, but generally speaking, contracting a trained professional third party who has no vested interest in selling you a particular brand or size of unit is far preferable to trusting a seat-of-the-pants estimate that might be questionable.

In any event, always be sure that you and any contractor are on the same page before any work begins. Whenever this much money is involved it is always in your best interest.

I hope this information on determining the correct size for a new HVAC system has helped you. If so, pass the URL along to your friends. Thanks for visiting!


Looking for more great content? Visit our partner sites:

The Green Frugal

Running Across Texas


As Featured On Ezine Articles

I offer article and blog-writing services. Interested? Hire Me!


Did you find this article helpful? Thanks for supporting this free site with a small donation!

 




Visit Kelly’s profile on Pinterest.


About the author:

Photo of Kelly R. SmithKelly R. Smith is an Air Force veteran and was a commercial carpenter for 20 years before returning to night school at the University of Houston where he earned a Bachelor’s Degree in Computer Science. After working at NASA for a few years, he went on to develop software for the transportation and financial and energy trading industries. He has been writing, in one capacity or another, since he could hold a pencil. As a freelance writer now, he specializes in producing articles and blog content for a variety of clients. His personal blog is at I Can Fix Up My Home Blog where he muses on many different topics.


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