Questions about ways to measure and improve the ability to get useful work out of devices that consume energy. This includes coal, oil and gas as well as electricity.

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97 views

How can 12 V halogen downlights be much more efficient than 220 V ones?

The house I bought has halogen downlights pretty much everywhere, and they are all 12 V. I was wondering why bother with stepping down to 12 V but didn't think much about it. When looking at ...
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345 views

How should I seal and insulate a crawlspace to mitigate radon and allow for storage in the space?

Background: I recently bought a house built in 1996. It has a 1480sq ft (approx) living area, which is the same as the crawl space size. The location is in the Kansas City metro area. The yard is ...
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61 views

Utility of new smartphone-based thermal cameras in identifying cold spots in the home

Winter is coming up, and for those of us in the Midwest, that means that winterizing needs to be done. I'm moving into a house built in 1956 that may have some cold spots around doors, windows, and ...
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51 views

How can I tackle thermal downdraught?

Thermal downdraught on windows is a fact of life. I understand the mechanics involved, but that doesn't make it any more comfortable! Short of replacing the glass in my double-glazed units with (yet) ...
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0answers
70 views

How do I maximize light gain and minimize heat gain for my glass wall?

How to get maximum benefit of daylight while optimizing air-conditioner benefit for a glass wall (currently) of size 11' * 8' (total 88 square feet exposed). Facts: The glass wall never gets direct ...
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19 views

diy energy performance certificate

In EU, when is about to sell/buy a house a energy performance certificate is a must. I don't have any plans to sell my house, but I'll like to do a efficiency evaluation of my building, in order to ...
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30 views

Can a power inverter work continuosly?

I wish to avoid the constant power outages in my home. So, can I put to work a 2.000w power inverter continuously? Suffers it too much wear if doesn't rest each certain time?