Combined cooling, heating and power system with complementary solar energy and biogas energy

Abstract

The invention relates to a combined cooling, heating and power system with complementary solar energy and biogas energy, and belongs to the technical field of energy utilization. The invention can realize the complementary utilization of solar energy and biogas energy and effectively improve the energy utilization rate. The combined cooling, heating and power system with complementary solar energyand biogas energy comprises a lithium bromide absorption refrigeration system, a solar collector hot water circulation system, a biogas fermentation storage system, a biogas power generation system and a household biogas delivery system. When the solar energy is sufficient, one the one hand, the hot water generated by the solar heat collector drives the lithium bromide absorption refrigeration system with a membrane energy storage device to supply cooling; on the other hand, the hot water generated by the solar heat collector can supply heat to families or domestic hot water directly; in addition, the temperature in the biogas fermentation tank can be controlled, so that the biogas fermentation tank is in an optimal fermentation state to maximize the biogas output. When solar energy is insufficient, the stored biogas enters an auxiliary boiler to burn and release heat so as to make up for the lack of solar energy. The generated biogas can be used for power generation, and the tail gasdischarged by an engine is subjected to waste heat recovery through a waste heat recovery device, so the hot water returned to the solar heat collector can be heated and the air entering the engine can be subjected to waste heat. Meanwhile, the biogas in the biogas storage tank can be directly delivered to the household kitchen to meet the demand of daily life for gas, and the combined supply ofcooling, heating and power is realized.

Description

technical field [0001] The invention relates to a combined heat, electricity, cooling and gas supply system in which solar energy and biogas energy are complementary, and belongs to the technical field of energy comprehensive utilization. Background technique [0002] Solar energy is a clean natural energy with abundant reserves and great application prospects. However, due to the influence of many factors, the supply of solar energy is relatively unstable. As a renewable energy source, biogas energy can not only solve the problem of energy supply, but also achieve waste recycling and effectively improve the living environment. Especially in recent years, the application of solar energy and biogas energy has attracted more and more attention, but due to their respective shortcomings, the application degree is limited, and their application potential cannot be effectively exerted. The comprehensive utilization of solar energy and biogas energy as complementary energy sources...

AI Technical Summary

Problems solved by technology

However, when the sunlight is insufficient or the solar energy cannot be used, biomass energy cannot make up for the lack of solar energy, and the biomass straw is used in the form of burning, and its energy utilization efficiency is not high

Chinese invention patent name: A multi-stage cooling, heating and power cogeneration system of biomass energy and solar energy (application number: 201410372180.6), the invention can continuously provide stable output of cold energy, heat energy and electric energy, and can adjust the system output according to user needs load, but in this patent, solar energy is only used for cooling, and the utilization rate of solar energy is not high

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