As long as the heat absorption efficiency is there, there will be no problem comparing whether the water temperature rise is OK! If it doesn't work, replace it. If it works, keep using it!
Recommend "Dr. Sun" solar energy and Sancang solar energy (no need for water level probes and solenoid valves). Heating and hot water usage rates are fast in rainy weather, as is after-sales service. The rate is also significantly reduced, saving time and energy. This model only takes 20-30 minutes to heat without sunlight, while the single bay solar model takes 2-3 hours.
Paper! is made up of trees and grass. In addition to white fibers, tree and grass fibers also contain lignin, pigments and other substances. Although paper manufacturers are trying to eliminate lignin ands pigments during papermaking, some will remain over time. exposed to sunlight, the lignin and pigments will react with oxygen and the white paper will gradually turn yellow.