Two-side flow variable sewage source heat pump unit and operation method thereof

Abstract

The invention discloses a two-side flow variable sewage source heat pump unit and an operation method thereof, and belongs to the technical field of energy conservation and emission reduction. The two-side flow variable sewage source heat pump unit is formed through connecting a variable-flow flooded evaporator, a screw type heat pump compressor, an oil separator, a variable-flow condenser, a dryfilter, an electronic expansion valve, and the like. According to the two-side flow variable sewage source heat pump unit, the structure is novel, the working principle is clear, and compared with theprior art, the two-side flow variable sewage source heat pump unit has the advantages that the heat exchange process of hot water of the condenser can be automatically changed according to the quantity and temperature condition of sewage and the temperature condition of hot water, and the hot water requirement is automatically met; bathing waste water and a water source heat pump system are organically combined, heat energy in bathing waste water is sufficiently and efficiently utilized, and the outlet temperature of bathing sanitary hot water is effectively increased; and water inlets of theevaporator are alternately utilized, a pulse current is generated, a self-cleaning effect of the evaporator is achieved, the requirement on sewage filtration is reduced, the impurity retention problem is solved, operation of the sewage source heat pump unit is more efficient, and the sewage source heat pump unit is energy-saving and environmentally-friendly, and has relatively high application value.

Description

technical field [0001] The invention belongs to the technical field of energy saving and emission reduction, and relates to a sewage source heat pump unit and an operating method thereof, in particular to a sewage source heat pump unit with double-sided variable flow and an operating method thereof. Background technique [0002] As the smog problem in the north becomes more and more serious, the local environmental protection department stipulates that small and medium-sized bathrooms are not allowed to use boilers. However, mining areas in the north still face the problem of hot water bathing. Most of them are located in the fringes of urban and suburban areas and cannot use natural gas. In order to solve these problems, sewage source heat pump technology has been developed and applied. Sewage source heat pump technology refers to extracting low-grade energy from sewage (including domestic sewage, bathing sewage, etc.) to heat buildings or produce domestic hot water. It has...

AI Technical Summary

Problems solved by technology

The former performs multiple filtrations on the sewage, and after degreasing, it directly enters the sewage source heat pump. The operating efficiency of the system is high, but the requirements for sewage treatment are high; The refrigerant enters the water source heat pump unit again, but the requirements for the intermediate heat exchanger are high, the system is reliable in operation, and the efficiency is slightly low

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