[Equest-users] [EXTERNAL] Re: Why Water Source Heat Pump is not considered as Renewable Energy in LEED rating system? (UNCLASSIFIED)

Eurek, John S NWO John.S.Eurek at usace.army.mil
Wed Jan 7 10:25:01 PST 2015


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Fun facts and wild ideas.

If the Earth was the size of an egg, the Earth's crust would be 5 times thinner than the shell of the egg.  

On this thin thin crust we dig/drill for oil, gas, coal and search for plants to burn for heat. Just below the crust is an unimaginable amount of thermal energy.

The purposed XL-pipe line is 1,179 miles.  The Earth's crust is on average only 25 miles thick. Why are we looking to drill horizontal and not vertically?

It is almost comical that we work so hard to find different energy sources while floating around on a blob of molten rock while living on a thin layer of ash.

:-)

I haven't done any calculations, but in terms of "Global Cooling", how much energy would be have to extract to lower the average temperature of the Earth's core by 0.001 degrees?  I'm guessing it would be several millions of times more energy than the entirety of all the energy used by humans in all of history (& prehistory).

-----Original Message-----
From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Aaron Smith
Sent: Tuesday, December 30, 2014 9:42 PM
To: YangMo; equest-users at lists.onebuilding.org
Subject: [EXTERNAL] Re: [Equest-users] Why Water Source Heat Pump is not considered as Renewable Energy in LEED rating system?

Mo,

I've always  assumed it was because they require the use of a compressor so with a COP of 3-4 they're  only 65-75% renewable.  Deep earth geothermal (that doesn't use a heat pump) ‎is considered renewable.  

Looking at the reference guide, they state that ground-source heat pumps use vapor compression systems for heat transfer and they do not obtain significant quantities of deep earth heat.  

Aaron Smith, P.Eng
M&R Engineering Ltd.

Sent from my BlackBerry 10 smartphone on the TELUS network.
  Original Message  
From: YangMo
Sent: Monday, December 29, 2014 23:14
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Why Water Source Heat Pump is not considered as Renewable Energy in LEED rating system?

Hi all,

This question is not about eQUEST, but since in this group a lot of people are working for LEED consultant projects, I think it is a good place to ask this question. I have been working in U.S. for a lot of years and just came back to China recently. In China ground source heat pump and water source heat pump systems are very very popular, and they are considered as renewable energy, since they use free heat from the soil and water. But in LEED rating system, heat pump is not considered as renewable energy. Why? Is it because those system has side effect to the environment? 

Thanks!
Mo Yang
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