Hoping someone out there can assist us, as this information is difficult to find on the Internet:
1. How to calculate the cost of operating an off-peak heat bank (mass storage) compared to non-off-peak reverse cycle room airconditioner. ie for heating during the daytime mainly. (We have a 3.6KV solar system - back to grid).
2. Is it possible / practical to connect up a water heater panel inside a living room to a conventional storage hotwater service? We have vacuum tube solar hotwater and would like to distribute some of that energy into the house (space heating) during the day.
Thanks!