|Muehllehner Solar Hot Water System
We have bypassed the LP water heater since the beginning of May and have relied solely on the solar hot water since then except for 2 days. The LP water heater has been turned off (pilot only) since May.
I have added a temperature monitor to the system, which records the temperature on the collector and in the water tank every 20 minutes. Below the data for the month of July 2007 are shown. As can be seen, the water temperature (black solid curve) never went below 100°F.