Household gas water heater and liquefied air energy storage reactor coupled system and operation method

Abstract

The invention discloses a household gas water heater and liquefied air energy storage reactor coupled system and an operation method. The household gas water heater and liquefied air energy storage reactor coupled system is composed of a compression device, a stage end cooler, a heat storage tank, a cold box, a cryogenic expansion machine, a gas-liquid separator, a liquefied air storage tank, a reheater, the gas water heater, a liquid pump and an expansion power generation device. The operation modes of the system comprise a liquefied air energy storage mode and a gas combustion power generation mode. According to the system, the gas water heater and the heat storage tank are additionally arranged on the basis of a conventional liquefied air energy storage system, waste heat assisting in heating high-pressure air, so that the temperature and power capability of the air entering the expansion power generation device are improved; it can be guaranteed that the system can still work normally under the electricity price peak or power failure condition; the additionally arranged gas water heater aims to heat prepared high-pressure liquefied air through heat energy generated by gas combustion during power failure, so that the high-pressure liquefied air absorbs heat, is gasified and then enters the expansion power generation device to do work to generate power, and therefore the purposes of guaranteeing electric energy supply and providing domestic hot water at the same time are achieved.

Description

technical field [0001] The invention belongs to the technical field of energy storage and power generation, and in particular relates to a household gas water heater coupling liquefied air energy storage reactor system and an operating method. Background technique [0002] Present domestic water heater overwhelming majority directly utilizes electric energy to heat electric heating wire, heats domestic water with this, and its shortcoming one is that power consumption is big, and the 2nd, energy source is single, relies on electric energy to work completely. Gas water heaters are not subject to this restriction. They use natural gas to burn and heat domestic water through forced convection heat exchange and heat conduction. They have good stability and use the heat energy generated by direct combustion of natural gas, which is more environmentally friendly, low-carbon and efficient. [0003] At the same time, consider issues such as power outages during peak periods of elect...

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Problems solved by technology

[0002] Most of the current domestic water heaters directly use electric energy to heat the electric heating wire to heat domestic water. The disadvantages are that the power consumption is large, and the energy source is single, and the work is completely dependent on electric energy.

[0005] Traditional household power generation generally uses diesel generators, which convert diesel chemical energy into thermal energy by burning diesel oil, and then into mechanical energy and finally into electrical energy. Although it can supply household electricity relatively stably, its disadvantages are as follows. First, diesel generators The power is limited and only for emergency use; second, the system is single, and the comprehensive energy utilization rate is low; third, diesel oil is a high-chain hydrocarbon, which causes serious combustion pollution

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