Power generation system with liquid nitrogen of cold supply system as energy

Abstract

The invention relates to a power generation system with liquid nitrogen of a cold supply system as energy. The cold end of a stirling generator is cooled through low-temperature liquid nitrogen, the hot end of the stirling generator is heated through an ethylene glycol solution, a large temperature difference can be generated between the cold end and the hot end of the stirling generator, and therefore the stirling generator can generate electricity, and cooling capacity of the liquid nitrogen is fully utilized. High-pressure nitrogen expands and does work in an expansion machine and drives the generator to work so that electricity can be output outwards. The nitrogen output from the cold end of the stirling generator can be used for refrigeration of an indoor air conditioner after passing a heat exchanger to cool the ethylene glycol solution. The nitrogen output from the low-temperature expansion machine can supply cold to a low-temperature cold storage. Energy of the liquid nitrogen is fully used, consumption of traditional energy is lowered, emissions of greenhouse gas and harmful gas are reduced, and pollution to the atmosphere is reduced.

Description

technical field [0001] The invention relates to a low-temperature cold energy utilization system, in particular to a power generation system using liquid nitrogen in a cooling system as an energy source. Background technique [0002] With the development of the global economy, the shortage of traditional energy is becoming more and more serious. In addition, people pay more and more attention to environmental protection. There are many problems in the traditional power generation system. Existing power generation systems are generally thermal power generation systems and hydroelectric power generation systems, and thermal power systems are not environmentally friendly because they use fuel. Hydropower needs to consider geographical location and water source issues. The development and utilization of environmentally friendly energy is a development trend. Contents of the invention [0003] The present invention aims at the pollution problem existing in the current power g...

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Problems solved by technology

[0003] The present invention aims at the pollution problem existing in the current power generation system, and proposes a power generation system that uses liquid nitrogen in the cooling system as an energy source, adopts a combined system of a low-temperature expander and a Stirling generator, and makes full use of the low temperature of liquid nitrogen Cold energy, effectively combining the expander and the Stirling generator to generate electricity, and at the same time providing a low-temperature environment for room refrigeration and cold storage that require air conditioning, reducing the consumption of traditional energy and reducing air pollution and greenhouse gas emissions

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