5 posts tagged with heating and solar.
Displaying 1 through 5 of 5. Subscribe:

What's the most efficient non-moving shape for collecting solar energy?

I am working on a solar water heater, and I am trying to figure out this geometry problem. I know a parabola is the most efficient movable shape to collect the sun's energy, but what is the most efficient fixed shape? It will clearly change with date and lattitude, but given an average day, what shape focus the most energy onto a heating tube? [more inside]
posted by juice boo on Jan 9, 2017 - 6 answers

Installing hydronic radiant floor heating when building a new house?

Installing hydronic radiant floor heating when building a new house? [more inside]
posted by no bueno on Feb 1, 2012 - 8 answers

Comparison of different green energy solutions

Comparison of carbon reduction/energy efficiency/ cost-benefit of rain water tanks V solar heating V waste water reclamation? [more inside]
posted by parryb on Oct 17, 2010 - 4 answers

Ok, so you have hot rocks. Now what?

This weekend, I saw a green renovation show that used a large amount of gravel in the basement to hold heat gathered from a solar-collecting area in the roof. My dad, a builder, says this method doesn't work well. Help me understand if someone has devised a "better mousetrap" or if this is just something that has never worked and is being done for greenwashing on TV... [more inside]
posted by bitter-girl.com on Apr 14, 2009 - 14 answers

Advice on solar hot water systems in the UK? What do I need to know?

Solar hot water and central heating for dummies? I'm in the UK, our (gas, combi) boiler has been rubbish since we moved in, and given that we're now looking at a new boiler we're thinking of complementing it with some sort of solar panel based solution. What should we look out for? What do we need? Can we reuse our existing radiators? What questions should we ask installation companies? [more inside]
posted by handee on Jun 23, 2008 - 7 answers

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