Thanks to this forum my inquisitive mind has started to work again. Thank you.
My workshop has infloor and controlled by outdoor reset and after a year and half have found it to be a great system. Now I would like to put the house emitters on outdoor reset as well, fin-tube and wall panels, to not only gain the benefit of possible longer storage times but also gain the benefit of returning with lower water temperatures to help in the stratification area. I've been kicking around ideas such as injection mixing, variable speed delta T and motorized valve mixing. My Garn is plumbed as a secondary into my primary house loop with a Flat Plate in the house.
My question is which will provide me the lowest distribution loss in my underground lines? The answer seems to be mixing prior to going into the underground but maybe I'm just reaching.
If I do mix or inject or so forth, how can I 'bypass' the mixing aspect when I'm heating DHW? I've searched long and hard and while on/off injection or variable speed injection with DHW priority will work, I will still flow the hottest temp from storage this way and it seems my underground will experience higher heat loss with hotter water flowing in it.
A mixing valve with a controller seems to fit the bill, but how do I send a signal to it to bypass outdoor reset (open the valve all the way) when DHW calls for heat? Or, should I just consider a bypass loop with a diverter valve that would bypass the mixing valve when there is a call for DHW?
My workshop has infloor and controlled by outdoor reset and after a year and half have found it to be a great system. Now I would like to put the house emitters on outdoor reset as well, fin-tube and wall panels, to not only gain the benefit of possible longer storage times but also gain the benefit of returning with lower water temperatures to help in the stratification area. I've been kicking around ideas such as injection mixing, variable speed delta T and motorized valve mixing. My Garn is plumbed as a secondary into my primary house loop with a Flat Plate in the house.
My question is which will provide me the lowest distribution loss in my underground lines? The answer seems to be mixing prior to going into the underground but maybe I'm just reaching.
If I do mix or inject or so forth, how can I 'bypass' the mixing aspect when I'm heating DHW? I've searched long and hard and while on/off injection or variable speed injection with DHW priority will work, I will still flow the hottest temp from storage this way and it seems my underground will experience higher heat loss with hotter water flowing in it.
A mixing valve with a controller seems to fit the bill, but how do I send a signal to it to bypass outdoor reset (open the valve all the way) when DHW calls for heat? Or, should I just consider a bypass loop with a diverter valve that would bypass the mixing valve when there is a call for DHW?