[Greenbuilding] A Solar Hot Tub

[Dan Antonioli]

Nick,

A solar heated hot tub works the same way a regular hot tub works. A hot tub stores hot water. If you want a "solar only" tub then the usage is limited, but a hot tub heated at 104 degrees feels just as good as one heated by gas or electricity.

Dan Antonioli






>dantonioli at earthlink.net writes:
>
>> The tub is the storage tank.
>
>You might think all that water would be a useful heat store, but it can't 
>store any useful solar heat if it can't change temperature.
>
>> ... a regular solar hot tub system uses a standard "swimming pool and spa" 
>> sensor/control that limits the temperature to 104 degrees. When the tub 
>> temp is anywhere below 104, and the temperature of the panel is higher 
>> than the tub water, the pump circulates the tub water. It's one big 
>> drainback system...
>
>> You still need a conventional heater
>
>Some people define a solar hot tub as "one with no other form of heat."
>
>Nick
>