Does solar energy work in Shandong in winter at about -10 degrees? What is the temperature of the water on the same day?
I'm from Yantai, Shandong, and I'm using "Jindian Jurong Solar", the pipeline has an evacuation function, and I don't use the electric auxiliary heating device, and I've been taking a bath at home in the last month (about once every 3 days), and the water temperature is between 60-70℃. The water temperature has been rising in recent days and is expected to reach 80°C before the end of the year.