How much solar energy does a root canal use for four people?

Let me explain how much water a solar tube can hold. If there are 4 people, 20 solar tubes will be enough. One tube can hold 9 kilograms of water (a solar barrel with 20 tubes can hold approx.). 300 kilograms plus the inside of the tube. There should be about 500 kilograms of water (if there is cold water when you turn on the sprinkler, add 300 kilograms of cold water.) The total amount is about 800 kilograms of water. It's enough for 4 people. I sell solar energy. Here's a tip. There are 2 types of solar tubes. There are ordinary tubes and Zijin tubes. When you buy solar, ask them to install Zijin tubes for you. The answer above may help you