Water source heat pump-biogas power generation combined heat and power generation circulation method and system

Abstract

The invention discloses a water source heat pump-biogas power generation combined heat and power generation circulation method and system. The method comprises the steps: transmitting shallow water on the earth surface into a room through a water source heat pump, and enabling the shallow water to serve as a cold / heat exchange medium and breeding water; carrying out solid-liquid separation on collected excrement so as to obtain a solid part of the excrement; and performing a biogas anaerobic power generation process based on the solid part of the part of excrement. Water is used as a medium, underground water is pumped out to be used for the water source heat pump, the refrigeration and heating requirements of live pigs are met, manure and urine pollutants formed after the live pigs are fed and washed are subjected to aerobic composting and biogas slurry recycling and reusing, agenerated fertilizer and clean water generated through biodegradation are used for farmland fertilization and irrigation, biogas generated by anaerobic fermentation supplies power to the water source heat pump and the pig house after power generation, the whole system integrally forms an efficient ecological cycle planting and breeding mode, pig farm waste is recycled, and underground water resources are efficiently, circularly and comprehensively utilized.

Description

technical field [0001] The invention belongs to the technical field of electric power comprehensive energy, and in particular relates to a water source heat pump-biogas power generation cogeneration cycle method and system. Background technique [0002] As a large consumer of water and electricity, pig farming has extremely high requirements on energy supply and temperature environment. The water source heat pump system can meet the cooling and heating needs of pig farms. The water source heat pump system uses shallow water on the earth's surface (groundwater, geothermal water, surface water, sea water, lakes, etc.) source system. Regardless of whether it is a buried pipe heat pump, ground water heat pump or surface water heat pump, water or antifreeze is ultimately used as a carrier to transport the low-level heat energy formed by the solar energy and geothermal energy absorbed by the shallow water on the earth's surface or soil to the heat pump device in winter. , and t...

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Problems solved by technology

[0004] However, the existing large-scale pig breeding has common problems of energy supply, its energy management method is very extensive, the degree of local development and utilization of renewable energy is not high, the regulation performance is insufficient, and the reliability of power supply is difficult to improve. Significant room for improvement in energy efficiency and reliability

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