There are two main types of 4v lead acid battery
There are two main types of 4v lead acid battery solar collector, flat panel and vacuum tube. Flat panel collectors are cheap but inefficient whereas vacuum tube based collectors are more efficient but more costly.
Room heating, cooling and ventilation
Solar thermal technology can be used for both heating and ventilating rooms.
Room heating
Room heating is achieved by using materials of high thermal mass such as concrete, water or stone to store solar energy during the day, which can then be released when room temperatures drop.
Room cooling
It may seem odd that the suns heat can be used to actually cool air spaces but it is in fact true. There are multiple methods of energy storage inverter solar air cooling one example being an absorption refrigerator. This works by using a source of heat (the sun) to drive a cooling system.
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