A thermochemical adsorption heat pipe device driven by low-grade thermal energy

Abstract

The invention discloses a thermo-chemical adsorption heat pipe device driven by utilizing low-grade heat energy. The thermo-chemical adsorption heat pipe device comprises a heat pipe main body (comprising an evaporating section, a condensing section and a heat-insulating section), a mass transfer channel, a liquid transfer channel, a hot source, a cold source, an evaporating section outer sleeve, a condensing section outer sleeve and a heat-insulating section charging pipeline, wherein the mass transfer channel and the liquid transfer channel are separately arranged on the center and the inner wall surface of the evaporating section of the heat pipe, and are used for providing flowing channels for gas-state adsorbate and liquid-state adsorbate; the hot source and the cold source are separately used for providing heating fluid or cooling fluid with certain temperature; the evaporating section outer sleeve and the condensing section outer sleeve separately form flowing heat exchange spaces with the outer wall surface of the evaporating section and the outer wall surface of the condensing section; the heat-insulating section charging pipeline is used for vacuum-pumping and charging an adsorbate working medium; the heating fluid enters the evaporating section outer sleeve through a second outlet and inlet, and flows back into the hot source after carrying out heat exchange with an adsorbent; and cooling fluid enters the condensing section outer sleeve through a first outlet and inlet pipeline, and flows back into the cold source after carrying out heat exchange with the adsorbate.

Description

technical field [0001] The invention relates to the technical field of thermochemical adsorption and heat and mass transfer, in particular to a thermochemical adsorption heat pipe device driven by low-grade heat energy. technical background [0002] Low-grade heat energy widely exists in high-temperature exhaust gas from engines, waste heat from power plants, and low-temperature heat sources such as solar energy. Efficient recovery and utilization of low-temperature heat sources below 100°C have significant energy-saving effects. The traditional heat pipe is an efficient, passive and reliable heat transfer method for the evaporation-condensation phase transition of working fluid (such as water, ammonia) driven by capillary force. Its heat transfer performance is limited by viscosity limit, sound velocity limit, capillary limit, There are various restrictions such as carry-over limit, boiling limit and filling liquid quality requirements. The absorption / adsorption reaction c...

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Problems solved by technology

The problem with the thermal chemical adsorption energy storage process is that the energy storage process is relatively slow and can only be used in occasions that do not require high heat transfer processes; the reactor needs to undergo alternating heating and cooling processes and can only be used in intermittent energy storage

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