A Distributed Energy System Complementing Multiple Renewable Energy Sources

Abstract

A distributed energy system that complements a variety of renewable energy sources, including a system control unit, a solar heat collection unit, a biogas fermentation unit, a biomass gas processing unit, a micro gas turbine power generation unit, and an absorption refrigeration unit. The system converts solar radiation energy into hot water heat energy through a solar collector, and then heats the biogas fermentation tank to keep it at a constant temperature. The generated biogas is mixed with hot air and works inside the micro gas turbine to drive the generator to generate electricity. The waste heat of the micro gas turbine drives the absorption refrigeration system to generate cooling capacity. Among them, the biogas slurry produced in the biogas fermentation process and the exhaust gas of the micro gas turbine can be used as culture medium and Carbon source, cultivating microalgae, realizing the reuse of resources. The energy required by the system is all provided by solar energy and biomass energy, which efficiently utilizes low-grade solar energy, effectively recycles and utilizes biomass energy, and finally achieves the main purpose of power generation, heating, and cooling.

Description

technical field [0001] The invention relates to the fields of solar energy utilization technology, biomass biogas utilization technology, microalgae cultivation technology and absorption refrigeration technology. Background technique [0002] The core of a distributed energy system is a thermoelectric conversion device and a heat-to-cold conversion device. At present, the distributed energy systems used in the market mainly include the combination of gas turbine and lithium bromide absorption refrigerator, the combination of internal combustion engine and lithium bromide absorption refrigerator, and the combination of fuel cell and lithium bromide absorption refrigerator. joint supply system, etc. Although these systems can always have a high utilization rate, due to the large initial investment and poor economy, the payback period of the investment is basically more than 5 years. In addition, these systems generally use lithium bromide absorption chillers as waste heat ut...

AI Technical Summary

Problems solved by technology

[0006] After literature search, it was found that the name of the Chinese invention patent is: biogas power generation system, and the application number is 201120196257.0. This patent relates to a biogas power generation system, which belongs to the field of biogas power generation technology, and it solves the power generation efficiency existing in the biogas power generation technology in the prior art Defects such as low, easy to cause waste of biogas, low utilization rate of heat generated by biogas power generation, etc.

However, there is no clear implementation plan for the utilization of waste heat after biogas power generation

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