Low-grade waste heat drives high-efficiency moisture absorption-thermochemical reaction dual-stage temperature changer

Abstract

The invention provides a low-grade heat source driven high-efficiency moisture absorption-thermochemical reaction two-stage temperature changer, wherein the waterway valve group is connected with the first high-temperature bed, the second high-temperature bed, the first low-temperature bed, the second low-temperature bed, the first The evaporative condenser and the second evaporative condenser are connected; the first high-temperature bed is connected with the second low-temperature bed, the second high-temperature bed is connected with the first low-temperature bed, the first low-temperature bed is connected with the second evaporative condenser, and the second low-temperature bed is connected with the second low-temperature bed. The first evaporative condenser is connected, and the first evaporative condenser is connected with the second evaporative condenser. The invention includes the absorption process, the crystallization process and the thermochemical reaction process of the hygroscopic salt, and the cyclic moisture absorption is significantly increased, thereby increasing the energy flow. The heat source temperature is 70°C, the cooling water temperature is 35°C, the heat source problem is raised from 70°C to 125°C, and the cold storage density can reach 0.69kWh / kg; during the energy storage process, the working medium salt and the refrigerant are separated, and there is almost no loss , to achieve continuous improvement of heat source quality.

Description

technical field [0001] The invention relates to the technical field of chloride salt / expanded graphite-water two-stage temperature changer, in particular to a low-grade waste heat driven high-efficiency moisture absorption-thermochemical reaction two-stage temperature changer. Background technique [0002] The growth rate of energy production is still difficult to meet the requirements of national economic development, and energy prices are still on the rise. This will be a new challenge for metallurgical enterprises whose energy costs account for 20% to 30% of the total production costs of enterprises. However, the root cause of the grim energy situation in my country at present lies in the low efficiency of energy use. my country's output efficiency per ton of standard coal is only equivalent to 10.3% of Japan's and 28.6% of that of the United States. Nearly 60-65% of industrial energy in my country is converted into waste heat resources. The total waste heat resources o...

AI Technical Summary

Problems solved by technology

However, the invention patent is too complicated, which will affect the economy and reliability of the invention, and it is difficult to realize efficient automatic control; at the same time, the invention uses multiple solution pumps, which is prone to solution pump blockage

Images