I'm finally to the point of hooking up my panels to the coil I placed in my unpressurized storage tank when I installed it 4 years ago.
Question: Should the HW from the panels go to the top of the coil or the bottom? This is a 150' copper coil similar to the ones for my boiler HX and DHW coils. With the boiler I go into the top so as to maintain stratification, i.e. the hottest water enters at the top and sheds heat as it goes toward the bottom.
But I was thinking that since there is usually a 15 degree differance between the top and bottom of the tankand my controller is set for 10 degrees higher than the top of the tank the panels would have to achive at least 25 degree rise or everything would shut down.
Sending the HW to the bottom seems counter to the way I do the boiler and would cause some turnover as the heated water on the bottom rises to the top.
Which is the proper way for a solar panel set up?
This is mainly meant to be a summer DHW set up only, once I get to burning I doubt the panels would ever be able to come on since I keep the tank between 150 and 180 in the winter.
Thanks
Question: Should the HW from the panels go to the top of the coil or the bottom? This is a 150' copper coil similar to the ones for my boiler HX and DHW coils. With the boiler I go into the top so as to maintain stratification, i.e. the hottest water enters at the top and sheds heat as it goes toward the bottom.
But I was thinking that since there is usually a 15 degree differance between the top and bottom of the tankand my controller is set for 10 degrees higher than the top of the tank the panels would have to achive at least 25 degree rise or everything would shut down.
Sending the HW to the bottom seems counter to the way I do the boiler and would cause some turnover as the heated water on the bottom rises to the top.
Which is the proper way for a solar panel set up?
This is mainly meant to be a summer DHW set up only, once I get to burning I doubt the panels would ever be able to come on since I keep the tank between 150 and 180 in the winter.
Thanks