Multi-mode thermochemical adsorption refrigeration device based on cascade utilization of energy

Abstract

A multi-mode thermochemical adsorption refrigeration device based on cascade utilization of energy belongs to the technical field of refrigeration and air-conditioning and comprises a first reactor, a first reactor heat exchange coil, a second reactor, a second reactor heat exchange coil, a condenser, a condenser heat exchange coil, an evaporator, an evaporator heat exchange coil, a first desorption control valve, a second desorption control valve, a first sorption control valve, a second sorption control valve, a throttle valve, an auxiliary control valve, a high temperature reaction chemosorbent and a low temperature reaction chemosorbent. The device can select the optimal circulation mode according to the external residual heat temperature, and the same set of system can realize double-effect, double and secondary thermochemical adsorption refrigeration circulation mode, thus improving the recovery efficiency of the residual heat with different energy cascades and expanding the utilized temperature range of the residual heat.

Description

technical field [0001] The invention relates to a system in the field of refrigeration and air conditioning, in particular to a multi-mode thermochemical adsorption refrigeration device based on energy cascade utilization. Background technique [0002] Energy is the material basis for human survival and social development, and the development of advanced energy utilization technologies is inseparable from achieving sustainable economic development, meeting the growing energy demand, and effectively responding to climate change. Scientific energy use is the fundamental way to effectively solve the contradiction between energy supply and demand in our country. Due to the low efficiency of comprehensive energy utilization, the waste heat of different energy levels in our country is very rich. useless waste heat. The implementation of cascade utilization of energy and efficient recycling of these extensive low-grade waste heat is an important way to solve my country's energy pr...

AI Technical Summary

Problems solved by technology

[0003] In this context, thermochemical adsorption refrigeration has attracted extensive attention from domestic and foreign scholars in the field of waste heat recovery in recent years due to its remarkable energy-saving effect. Thermochemical adsorption refrigeration is an energy-saving and environmentally friendly green refrigeration technology, which is characterized by the use of low-grade Thermal energy is used as the driving force to realize the cooling effect on the outside world by using the thermal effect of solid-gas reversible chemical reaction. However, because these widely existing waste heat has different temperature grades, it is difficult to realize the cooling effect of different energy levels by using a single-mode thermochemical adsorption refrigeration system. Efficient recycling of waste heat

[0004] After searching the literature of the prior art, the Chinese patent application number is 200810034283.6 "Double Adsorption Refrigeration Cycle System", in this technology: the high temperature reactor is connected with the condenser, the condenser is connected with the evaporator, and the evaporator is connected with the low temperature reactor The low-temperature reactor is connected with the high-temperature reactor, that is, the working performance of the refrigeration system is improved by adopting double adsorption refrigeration technology, but it does not involve the pressure swing desorption technology that can reduce the temperature of the driving heat source. The temperature of the driving heat source is relatively high, which limits Applications at lower heat source temperatures

[0005] After searching, it was found that the Chinese patent application number is 200810200040.5 "Regenerating type two-stage thermochemical adsorption refrigeration cycle system based on pressure swing desorption technology". In this technology: the main reactor is connected to the auxiliary reactor, and the auxiliary reactor is connected to the condensation The condenser is connected to the evaporator, and the evaporator is connected to the main reactor. The driving temperature of the refrigeration system is reduced by using two-stage pressure swing desorption technology, but the disadvantage is that the system has low performance and cannot realize waste heat. Efficient recycling, which limits the application in high-efficiency refrigeration

Images