Energy-saving bathroom waste heat recovery system

Abstract

The invention relates to an energy-saving bathroom waste heat recovery system which comprises a sewage pool, water treatment equipment, an immersion type heat exchanger, a sewage source heat pump unit and a water tank. After bathing sewage is discharged, the bathing sewage is preliminarily filtered and treated through a hair removing device, a first filtering layer and a second filtering layer in the water treatment equipment, then heat exchange is conducted between the bathing sewage and a refrigerant in an evaporator in the sewage source heat pump unit through the immersion type heat exchanger, the refrigerant extracts heat energy from the sewage, a working medium of the evaporator absorbs heat to be gasified, subsequently passes through a compressor to generate high-temperature and high-pressure gas and then enters a condenser, and latent heat released by condensation exchanges heat with cold water in the water tank. According to the energy-saving bathroom waste heat recovery system provided by the invention, impurities in the bathing sewage are pretreated through the water treatment equipment, so that the immersion type heat exchanger is not blocked, and scale is not accumulated on the pipe wall; and by means of the immersion type heat exchanger and the sewage source heat pump unit, heat energy of the bathing sewage is efficiently recycled, so that energy conservation and practicability are achieved, and the environmental problem can be solved.

Description

technical field [0001] The invention relates to an energy-saving bathroom waste heat recovery system and method, belonging to the field of energy technology. Background technique [0002] Most of the heat sources used for hot water are steam, air source heat pumps and natural gas, and the cost of operation is relatively high. Therefore, people are paying more and more attention to the utilization of renewable resources and waste heat. There is also a lot of waste heat wasted in life, for example, hot water discharged from bathrooms. People only consume a temperature difference of a few degrees Celsius during the bathing process, and the wastewater produced in the bathroom generally has a temperature of about 35 degrees Celsius, which contains a lot of heat energy. Especially for places such as colleges and universities with high population density and centralized bathing, the energy consumption of bathrooms occupies an important part of the energy consumption of colleges an...

AI Technical Summary

Problems solved by technology

If the bathroom sewage is directly discharged to the ground, it will not only cause thermal pollution, but also waste the available thermal energy, which is unreasonable from both an economic and environmental point of view

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