3 ms·
The most commonly used heat pumps utilize the external air as a source. Which is quite silly on a sunny but chilly day. Even 2m^2 black & isolated panel expose
by elmolino89 8y ago
The most commonly used heat pumps utilize the external air as a source. Which is quite silly on a sunny but chilly day.
Even 2m^2 black & isolated panel exposed to the sun will be tens of degrees warmer. Just putting the heat exchanger in some micro glass house with a valve would increase the efficiency.