Integrated cooling and power generation device driven by thermal energy

Abstract

The heat-driven refrigeration and power generation integrated device is composed of a heat engine and a refrigerator. The heat engine includes a circulating pump, a steam generator, a vapor-liquid separator, a two-way valve, a three-way valve, a turbine, a generator, a pressure exchanger, a first vapor-liquid heat exchanger, a first condenser, a confluence device, a storage Liquid tank, reheater. The heat engine uses heat energy to generate high-pressure steam, which drives compression refrigeration and drives turbines and generators to generate electricity. The refrigerator includes an evaporator, a second vapor-liquid heat exchanger, a pressure exchanger, a second condenser, and an expander. The shaft work output of the refrigerator expander is used to drive the circulation pump. The working fluids of the heat engine and the refrigerator can be the same or different, and non-azeotropic working fluids can be used to improve efficiency. The invention can use low-grade heat sources, and can be adjusted to separate cooling, combined cooling and power supply, or combined cooling, heating and power supply according to the temperature of the heat source. It has the advantages of high efficiency, less investment, short installation period, and low maintenance costs.

Description

technical field [0001] The invention relates to a new type of refrigerator generator device, in particular to a device that utilizes thermal energy to directly drive vapor compression refrigeration and can simultaneously generate electricity and heat. Background technique [0002] The energy consumption of refrigeration and HVAC has already accounted for more than a quarter of the electricity in the whole society. The development of alternative energy sources for refrigeration equipment and the improvement of the energy efficiency ratio of refrigeration equipment are related to the great cause of sustainable development. How to use renewable energy and industrial waste heat in refrigeration technology, directly drive refrigeration equipment with heat energy, and build a joint system of distributed refrigeration and power generation has always been an alternative energy solution that people expect. The emergence of this technology not only saves electricity and fossil fuels, ...

AI Technical Summary

Problems solved by technology

Absorption refrigeration requires a heat source temperature above 120°C, which is only suitable for large projects, with large investment and low efficiency

Adsorption and thermoacoustic refrigeration have low efficiency and immature technology

[0004] Data query found a patent (CA101187509A) on the direct use of thermal energy to realize cogeneration of power generation and refrigeration. This patent uses steam injection to compress the circulating working medium of the refrigerator. In addition to the disadvantage of low efficiency, the heat engine and refrigerant can only use the same A variety of working fluids, which cannot meet the needs of different heat source temperatures and different refrigeration temperatures

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