As the water source heat pump system has the characteristics of energy saving and environmental protection, for buildings in nearby areas with low-temperature water sources, if air conditioning and heating are needed throughout the year, it is recommended to give priority to the water source heat pump system as the cold and heat source of the building's HVAC system. In severe cold areas, if water source heat pump system is used for heating and air conditioning, the water supply temperature in winter can be checked according to the method in this article, and the selected to meet the heating requirements, and the lowest possible water supply temperature as the heating design water supply temperature.
Water source heat pump a total of 2 sets of water system: hot spring water side water system, water ring air conditioning side water system. Among them, the hot spring water side adopts submersible pump, two pipes, PPR hot water pipe, hot spring water supply and return water temperature is 65 ℃/25 ℃ respectively. The water ring air conditioning side adopts an open cooling tower, a pump, three pipe system, and a manual control valve is set on the relevant pipeline, so that it can be converted in winter and summer. The pipe shall be galvanized steel pipe. Water source heat pump cooling water design, return water temperature is 30 ℃/34 ℃, heat supply and return water temperature is 22 ℃/19 ℃, in which the cooling tower is placed in the sky, cooling water pump is placed in the basement.
As the heat source and heat sink of the heat pump system, there are usually two forms: open and closed. The closed system is to set up a displacement heat coil in the surface water body, connect the pipeline with the evaporator or condenser of the heat pump to form a loop, fill the original water, and circulate under the drive of the water pump. In the open system of water source heat pump, water is pumped from the bottom of the water source and sent to the heat exchanger to exchange heat with the circulating medium. If the water temperature ratio is high in winter, the water can also be directly sent to the heat exchanger of the unit, the heat-exchanged water is discharged back into the water body.
Water source heat pump units have certain requirements for the water quality of the water source. If the water quality fails to meet the requirements, it will cause harm to the valves, the host and its accessories, especially to the plate heat exchanger used by most heat pump manufacturers, which will affect the operation of the system. However, some treatment methods such as setting up a decontamination device and an electronic descaling device can usually be adopted, or several layers of filtering devices are installed in the intake well to reduce the diameter of sand and dust particles contained in the well water, so as to meet the water quality requirements of the unit.
Generally speaking, water source heat pump and water source quality are not the main factors affecting the application of water source heat pump units. Water source heat pump includes heat pump and water tank. The characteristic is that there is a circulating pump between the heat pump and the water tank. The heat pump is connected with the water tank through a connecting pipe. The heat pump is equipped with a small water tank and a coil in the small water tank. The water tank is equipped with a temperature control probe and a water meter and a water inlet pipe.
The domestic water source heat pump starts the heat pump host to work by the controller and starts the circulating pump at the same time. The heating gas heats the water in the small water tank through the coil. The heated water enters the water tank through the connecting pipe to form a circulating system. When the water in the water tank reaches After the set temperature value, the heat pump host stops working.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong, the hometown of FRP in China. The company has Grade II qualification for fire protection facilities engineering, Grade II qualification for construction mechanical and electrical installation engineering, Grade II qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, and an axial fan invention patent, A fan utility model patent, environmental assessment, safety assessment, three simultaneous and other procedures are complete.