Multi-energy complementary cold and hot biogas co-supply system

Abstract

The invention relates to a multi-energy complementary cold and hot biogas co-supply system. The system comprises a solar energy utilization device, a biogas production and utilization device, a heat pump device, an energy tower, a heat exchanger and the like. The solar energy utilization device comprises a solar heat collector, a heat storage water tank and a circulating pump; the biogas production and utilization device comprises a constant-temperature biogas generator, a biogas water heater and a biogas purification and storage device; the heat pump device comprises a high-temperature water tank, a low-temperature water tank, a throttle valve, a compressor, an evaporator and a condenser; the energy tower comprises a fan, a water retaining board, a sprayer, a heat exchanger, an air preheater, a water receiving plate, a spraying water tank and a spraying pump; the heat exchanger is arranged in the high-temperature water tank and used for production of domestic hot water. The high-temperature water tank is connected with the constant-temperature biogas generator, the energy tower is connected with the high-temperature water tank and the low-temperature water tank, and discharged flue gas is discharged from the lower portion of the air preheater by guidance of a pipeline. The system has the advantage that efficient cascaded utilization of energy is realized during stable supply of hot and cold biogas.

Description

technical field [0001] The invention relates to the technical field of utilization of renewable energy such as solar thermal energy, biomass energy and air thermal energy, in particular to a multi-energy complementary cold-heat biogas cogeneration system applicable to hot summer and cold winter regions. Background technique [0002] Energy and environmental issues have become an important bottleneck restricting social development. The development and utilization of renewable energy according to local conditions to meet the multi-level energy demand of buildings is an effective way to alleviate the severe situation of energy supply and improve the ecological environment. Renewable energy in hot-summer and cold-winter regions in my country is affected by factors such as geography, climate, and economy, and its distribution characteristics are significant. Higher air humidity leads to relatively abundant air heat energy and relatively less abundant solar energy. Cloudy and rainy...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that these technologies are restricted by factors such as climate periodic changes and technical conditions, and all have problems such as single energy supply, poor stability, and low energy utilization to varying degrees.

Solving these problems from a single technology will inevitably lead to an increase in cost, which will affect its popularization and application; however, the organic integration of individual technologies to maximize strengths and avoid weaknesses will provide the possibility to meet users' multi-level energy demand and achieve stable and efficient energy supply

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