Multiple renewable energy complementary distributed energy system

Abstract

A multiple renewable energy complementary distributed energy system comprises a system control unit, a solar heat collection unit, a biogas fermentation unit, a biomass gas processing unit, a micro gas turbine power generating unit, an absorption refrigeration unit and the like. According to the multiple renewable energy complementary distributed energy system, solar radiant energy can be converted into hot water heat energy through a solar heat collector and then a biogas fermentation tank is heated to keep the constant temperature; biogas and hot air which are produced apply work inside a micro gas turbine after being mixed with each other and accordingly a power generator is driven to generate power; an absorption refrigeration system is driven by waste heat of the micro gas turbine to produce refrigerating capacity; biogas slurries which are produced in the link of biogas fermentation and exhaust of the micro gas turbine can be utilized as culture media and carbon sources respectively to cultivate microalgae so as to achieve recycling of resources; energy needed by the system is provided by solar energy and biomass energy, so that the low grade solar energy is utilized efficiently, the biomass energy is recycled and utilized effectively, and accordingly the main purposes of power generation, heating and refrigeration can be achieved ultimately.

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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