Geothermal water mixing device is mainly used in water source system of warm and high temperature. Whatever structure of water mixing cooling system is to use the mixture of low temperature backwater after heat dissipation and high temperature water intake to provide heating water supply with appropriate temperature. Compared with other cooling methods, it has the outstanding advantages of simplicity, convenience, energy saving and temperature stability, so it has been widely used.
1 Function of Ground Heating Water Mixing Device
In the central heating system where the geothermal heat pipe coexists with the traditional heating sheet, the water temperature of the main water supply pipe is mostly above 85 ~90 ~C. In order to ensure the water supply temperature below 60 ~C required by the geothermal system, it is necessary to cool the high-temperature water. Through comparison and practice, the local heating and cooling device can meet the unit heating and temperature control water supply, and solve the headache of the heating installation company. Connecting with the water supply system of centralized heating or independent household heating and radiation devices in office, civil buildings and residential districts, the high-temperature hot water heated by the radiation system is converted into the low-temperature water needed for ground heating, so as to achieve the mixing of high-temperature water intake and low-temperature water return, protect the ground heating pipe material and prolong its service life. Jiangxi Geothermal Company.
2. Structure of geothermal water mixer
There are two core components in the mixing water cooling device: one is the power device used to provide the mixing of low-temperature water and high-temperature water after heating and heat dissipation, and the other is the mixing component used by users to control the mixing ratio of high-temperature water and low-temperature water to maintain the temperature stability of mixing water. There are many different structures and modes, such as electronic temperature control or self-reliance. Type temperature control device.
3. Energy-saving function of geothermal water mixer
Ground heating water mixing device can set water supply temperature according to the indoor temperature of heating, automatically adjust the change of valve plate to achieve stable water supply temperature of the system and no pressure drop of primary and secondary water flow, allow fluctuation of primary water temperature and secondary return water temperature, ensure stable temperature of secondary water supply, provide correct low-temperature hot water for ground heating, and ensure optimal heating and comfortable temperature. It plays an energy-saving role.
4 Importance of Water Temperature Stability in Ground Heating Water Mixing Device
1. By cooling the floor with mixed water, we can avoid the influence of excessive water temperature on the life of pipes and discoloration of wood floors; by slowly raising water temperature, we can avoid the deformation and warping caused by excessive heating of wood floors.
2. By controlling the water temperature, it can effectively control the heat dissipation of the ground heating, and provide more comfortable, energy-saving and healthy thermal environment experience.
3. Fluctuation of water temperature will cause thermal expansion, cold contraction and creep of pipe fittings, reduce the life of geothermal pipes, and increase the possibility of water leakage and shedding of water diverter connectors and pipe fittings.
5. Characteristics of Ground Warm Water Mixing Device
1. Speed-regulating shielded mute circulating pump and silent automatic valve are adopted, which have long service life and do not disturb the people.
2. The temperature control switch can accurately, sensitively and reliably control the automatic constant temperature continuous mixed water supply. When the water supply is interrupted or the water supply temperature is lower than the designed water supply temperature, the pump can stop automatically.
3. Continuous constant temperature water supply can reduce the deposition of impurities and gas accumulation in coil water, eliminate the hidden dangers of air resistance and blockage, and prolong the service life of ground heating.
4. Because the device has the functions of automatic start-stop, over-heat and over-low double protection, it provides certain conditions for operation safety under unmanned working conditions.
5. Economical and energy-saving, saving heat exchanger stations, internal circulation, energy saving, intermittent work using water temperature changes, reducing operating costs.
6. Pressure differential bypass valve, balancing system pressure.