With the increasingly mature solar energy market, solar water heating system has a certain share in school application. However, many schools reflect that the solar water heating system is not very good. In summer, the pipe is easy to burst, and in winter, it is easy to freeze and crack, and the hot water is not demonized enough; after using thermostatic valve, water is suddenly cold and hot; hot water shortage is particularly serious. The root cause of the problem lies in that most of the problems occur in the hot water user terminal, except for the damage of idle rooms in winter and summer vacation.
The following problems need to be solved in school hot water project:
1. There are a large number of students in school dormitories, and the water consumption time is relatively concentrated, and the water consumption is very large in a short time.
2. Students have high requirements on hot water temperature, which leads to serious waste and poor management.
3. Regular water supply and management.
4. Reduce installation cost, use cost and maintenance cost as much as possible.
5. Take into account environmental protection, safety and other factors.
The basic parameters required for the scheme design of hot water project in school are as follows:
1. How many dormitories are there? How many students live in each? Is it unified water supply or separate water supply?
2. Is the outlet water temperature limited? (the temperature of water used by school students should not exceed 48 ℃)
3. Water use: Flower sprinkling (40-60kg per person per day)
4. The number of floors in the dormitory building. Hot water pipe connected to shower room? Balcony? Corridor?
5. How to manage: regular (time division) water supply? Quantitative charging water supply (with water meter or IC card water meter)
6. Equipment installation site (length, width, orientation, and surrounding buildings) can provide the above parameters for you to design more suitable for your own hot water project.