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Why would it be inefficient to charge your car battery at night? And storing coolness in a masonry slab doesn't sound inefficient to me. Pumping water uphill an
by skookumchuck 9y ago
Why would it be inefficient to charge your car battery at night? And storing coolness in a masonry slab doesn't sound inefficient to me. Pumping water uphill and running it back through a turbine is pretty inefficient.
- Rebelgecko 9y agoI was referring to the cooling part, not the car charging. My totally unsubstantiated gut feeling is that a piece of concrete or a tank of water wouldn't stay cold long enough to be useful. With my local company, electricity during the day is something like 20%-100% more expensive (less of a differential in winter, more in the summer)
- skookumchuck 9y agoMasonry as thermal mass in homes has been in common use for centuries, maybe even millennia: http://www.greenbuildingadvisor.com/blogs/dept/musings/all-about-thermal-mass http://www.greenbuildingadvisor.com/blogs/dept/musings/all-a...