Adsorption type low temperature heat resource power generation and refrigeration device

Abstract

The invention relates to an adsorption type low temperature heat resource power generation and refrigeration device in the technical field of energy, which comprises a working medium pump, a vapor generator, a turbine, a generator, an adsorption refrigerator, a throttle valve, and an absorber which are connected in turn. Solar energy, geothermal energy, biomass energy or various industrial exhaust heat is taken as a system heat source; a binary working medium is selected as a system working medium; in the process of heating the heat source, a low boiling point volatile component of the binary working medium is changed into a gaseous state to push the turbine to do work and generate electricity, and the liquid part of the binary working medium releases heat in the adsorption refrigerator to realize refrigeration; and a gas working medium flowing out of an outlet of the turbine is re-absorbed by the liquid working medium flowing out of the adsorption refrigerator in the absorber so as to finish a working cycle. The device combines a low temperature Rankine cycle and an adsorption refrigeration cycle, and continuously outputs electric energy and cold energy when low-grade heat energy is continuously recycled, thereby realizing the power generation and the refrigeration by utilizing low temperature exhaust heat.

Description

technical field [0001] The invention relates to a device in the technical field of refrigeration, in particular to an adsorption type low-temperature heat source power generation and refrigeration device. Background technique [0002] Statistics show that the total amount of low-temperature waste heat below 350 °C accounts for about 50% of the total industrial heat production. In practical applications, due to the lack of effective recycling methods, most of the low-temperature waste heat is directly discharged into the environment, which not only wastes a lot of energy, but also constitutes serious thermal pollution to the surrounding environment. The low-temperature waste heat power generation technology of low-temperature Rankine cycle is an effective low-temperature waste heat recovery and utilization method. It uses organic working fluid as the energy carrier to convert low-grade heat energy into electric energy. When the temperature of the heat source is lower than 27...

AI Technical Summary

Problems solved by technology

However, this technology has certain shortcomings: in the refrigeration process, the working fluid does not undergo a phase change, and refrigeration is mainly achieved by the change of sensible heat of the working fluid, so the cooling capacity is limited to a certain extent

At the same time, in order to make the working medium reach a low temperature at the outlet of the turbine to achieve refrigeration, the turbine needs to have a large expansion ratio, which increases the difficulty of design and manufacture of the equipment and limits the scope of application of the device

In addition, the low-concentration solution flowing out of the steam generator is not used for work and refrigeration, and its heat is only recycled through the recuperation heat exchanger, which limits the power generation and cooling capacity of the system unit working fluid

Images