Machine-pump combined drive enthalpy-increasing type working medium side waste heat recovery air source heat pump bathing hot water unit

Abstract

The invention relates to a machine-pump combined drive enthalpy-increasing type working medium side waste heat recovery air source heat pump bathing hot water unit which comprises a refrigerant system, a hot water system and a waste water system. A compressor, a fluorine pump, an electromagnetic valve and an electronic expansion valve are controlled to start and stop, so that a mode for preparing medium-low temperature hot water through pump power type waste water waste heat recovery, a mode for preparing medium-temperature hot water through machine-pump combined drive enthalpy-increasing type waste water source heat pump waste heat recovery and a mode for preparing high-temperature hot water through a machine-pump combined drive enthalpy-increasing type air source heat pump are achieved, and hot water is provided all the year round. According to the machine-pump combined drive enthalpy-increasing type working medium side waste heat recovery air source heat pump bathing hot water unit provided by the invention, the clean and pollution-free air with abundant reserves is used as a heat source of the system, and energy configuration is green, stable and sustainable; the compressor and the pump are used as driving force, so that the system operation stability is improved, and the system operation energy consumption is reduced; the energy supply stability and reliability of the system under the most unfavorable working condition are improved by relying on an air supply enthalpy increasing technology; and the system is energy-saving, efficient, low in operation cost and easy and convenient to install and maintain, energy consumption of a building space unit is greatly reduced, and meanwhile, waste heat discharged into the environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of heat pumps and waste heat recovery, in particular to a machine-pump joint drive enthalpy-increasing type working medium side waste heat recovery air source heat pump bath water heating unit. Background technique [0002] With the development of urbanization and industrialization, people's requirements for the quality of life are getting higher and higher, which leads to an increasing proportion of energy consumption in residents' energy consumption. Among them, the energy consumption of domestic hot water for showers accounts for 20% of the energy consumption of urban residential buildings. The temperature of shower wastewater is usually high, generally above 30°C. A large amount of available waste heat is discharged along with shower wastewater, which not only causes environmental heat pollution , and the energy efficiency is not high. In addition, hot water for bathing is usually obtained by water heat...

AI Technical Summary

Problems solved by technology

However, when the water source heat pump water heater extracts high-temperature sewage waste heat to heat low-temperature tap water, it will be difficult to start, and the waste heat in the waste water cannot meet the energy and heat demand for bathing.

Images