Hot water system expert-Siji Muge Tips: ①Construction conditions: the size and shape of the heat collection area of the building, the height of the building and the location where the heat tank water is allowed to be placed (roof, floor, basement, etc.) ②User demand situation: average daily water consumption. Whether the user uses it once a day or anytime. Required water temperature. Location of water use. Practical uses: bathing water, heating baths, heating fish ponds, heating the environment (planting or breeding greenhouse). ③ Auxiliary energy conditions: determine whether to use one solution (electric heating, electric boiler, oil or gas boiler, water source, geothermal or air source heat pump, etc.) or a combination of two or more solutions. ④Location and geographical conditions: analyze the installation conditions according tothe geographic latitude of the user, the lowest ambient temperature in winter, sunlight conditions in all seasons and the presence or absence of an obstruction in the direction of the rising sun. ⑤Water pressure and voltage of user units: understand the water pressure, voltage and power situation of user units.
How do you want to connect? The water system of the wall boiler is separate, that is, the heating system and the hot water system are separate.
1. Solar hot water enters the heating system. This is not easy to achieve, because the wall boiler heating system must be a closed system, have a certain working pressure (usually 0.5 - 1.5 MPa) and also be connected to a series of components such as a circulation pump. It is therefore not easy to connect to solar energy.
2. Solar hot water is raconnected to the domestic hot water system of the wall-mounted boiler. The outlet temperature of domestic hot water from wall-mounted boilers is 30 to 60°C, while the outlet temperature of solar hot water is generally above 90°C in summer. In winter, when the sun shines, the temperature exceeds 60°C. Mixing the two for domestic hot water doesn't make much sense.
3. If you have installed solar energy for domestic hot water and now want to install a wall-mounted boiler for heating, you have two options:
Option 1: You can use solar energy The output of The water is connected in parallel with the domestic hot water outlet of the wall-mounted boiler, and a check valve is installed to prevent hot water from the wall-mounted boiler from entering the solar. In good weather, solar energy is used to provide hot water, and when the weather is bad, a wall boileris used to provide hot water. The system will be a bit complicated.
Option 2: Separate water supply and use of solar energy for washing face and vegetables in areas with low water consumption. Wall-mounted boilers are used in places with high water consumption, such as baths, to avoid frequent flooding of water by solar energy.