There are usually three people in my family, then the Chinese lunar new year some relatives back, there may be 5 to 7 people or so, we have to sell 12 local sijimuge solar tube, to more than 1 thousand, if 7 people, buy 12 tube solar energy, enough? How many tubes to buy?
Do not talk about how many tubes, because you do not know how large a single tube. Anyway, I recommend the use of hot water capacity of 200 liters or more. Solar water heater wholesale reference price: solar full glass vacuum tube diameter 58 1.8 meters long, 60 yuan each, anyway, less than 70 yuan.
Bath will not wash at the same time, in the wash it can also add water
Three people, 12 tubes or a tube on the 15. As for many people, it does not necessarily have to take a bath at the same time, you can separate the time arrangement. Best regards
