Plate type heat exchange device of surface water source heat pump

Abstract

The invention provides a plate type heat exchange device of a surface water source heat pump, which comprises a plate type heat exchanger, a front guard screen, a front support, a heat exchanger shell, a back support, an axle-flow water pump, a back guard screen, a controller and a pressure difference sensor. The front guard screen is connected with the front support, the front support is connected with the heat exchanger shell, the heat exchanger shell is connected with the back support, the back support is connected with the axial-flow water pump, the axial-flow water pump is connected withthe back guard screen, and the plate type heat exchanger is disposed in the heat exchanger shell. With the plate type heat exchange device, the surface water source heat pump can be guaranteed to runin an energy-saving and high-efficiency manner stably.

Description

technical field [0001] The invention relates to a ground source heat pump heat exchange device, in particular to a plate type surface water ground source heat pump heat exchange device. Background technique [0002] As we all know, the water intake methods of the traditional surface water ground source heat pump system are: 1) The surface water is directly applied to the water intake head, and the water quality treatment system is used to filter the sand content and algae and other impurities in the water, and then directly sent to the chiller for heat exchange. Its water treatment system has high investment and operating costs, complex maintenance and management, impurities that are not removed from the surface water are easy to block and corrode the heat exchanger of the chiller, and the surface water transportation equipment consumes a lot of energy; 2) The indirect application of surface water uses the water intake head to take water After the sand removal filter reduces...

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Problems solved by technology

[0002] As we all know, the water intake methods of the traditional surface water ground source heat pump system are: 1) The surface water is directly applied to the water intake head, and the water quality treatment system is used to filter the sand content and algae and other impurities in the water, and then directly sent to the chiller for heat exchange. Its water treatment system has high investment and operating costs, complex maintenance and management, impurities that are not removed from the surface water are easy to block and corrode the heat exchanger of the chiller, and the surface water transportation equipment consumes a lot of energy; 2) The indirect application of surface water uses the water intake head to take water After the sand removal filter reduces the sand content in the water, the cooling water of the chiller exchanges heat with the surface water through a plate heat exchanger or a shell-and-tube heat exchanger. Its plate heat exchanger or shell-and-tube heat exchanger must be Used together with sand removal filter, the plate heat exchanger or shell and tube heat exchanger needs to be disassembled and cleaned, which requires a lot of maintenance and management. The water processor needs to be maintained such as dosing, backwashing, drainage, and sludge removal. The solid particles separated by the filter and the flocculated sediment of the comprehensive water processor need to be discharged, which will pollute the environment to a certain extent, and the energy consumption of the surface water transportation equipment is large; The flow rate of surface water on the surface of the heat exchange coil is low, the heat exchange efficiency of the coil is low, and the area of ​​the heat exchange coil required by the system increases; 4) Infiltration water intake method, the permeable coil is buried in the mud and sand layer under the surface water , the surface water penetrates into the coil after being filtered by mud and sand, and then directly sent to the chiller for heat exchange. It does not require equipment filters and intermediate heat exchangers, and the heat exchange efficiency is high, but its construction is complicated and the initial investment is large. Surface water transportation equipment High energy consumption, easy blockage of coils, and high operation and maintenance costs; none of the above methods can fundamentally solve the energy-saving problem of surface water ground source heat pump technology, especially in the indirect application of the system with filters and intermediate heat exchangers. The initial investment and operation management costs of the system are relatively high, which affects the energy-saving benefits of the surface water ground source heat pump system, thus greatly limiting the promotion and application of surface water ground source heat pump energy-saving technology

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