JPS62112969A - Chemical heat pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to chemical heat pumps.

Conventional technology In conventional chemical heat pumps that utilize the heat of reaction between solids and gas, it is difficult to move solids, so generally,
The solid is filled in one container, and when the reaction in one direction is completed, the heating and the fluid to be heated are switched to perform the reaction in the opposite direction. The reaction rate, the temperature of the reaction layer, the amount of unreacted medium, etc. can be considered as factors for detecting the timing of switching the reaction direction.

Problems to be Solved by the Invention However, among the above factors, the reaction rate and the temperature of the reaction layer m are
It has been technically difficult to reliably detect the reaction rate because it is affected by the environment in which the reaction takes place.

The present invention solves the above-mentioned problems, and by using the liquid level of the unreacted medium in the heat exchanger as an indicator of the reaction rate when detecting the reaction rate, switching can be carried out at the optimal time. The purpose is to provide a chemical heat pump that

Means for Solving the Problems In order to solve the above problems, the present invention provides a reactor filled with a reaction solid, a heat exchanger for condensing or evaporating a heat medium, and a gas duct communicating with the inner vessel. Said reactor; J3
J, a flow path for heating fluid and fluid to be heated disposed in a heat exchanger, which absorbs the reaction solid and the heat medium.
A Jj J, and desorption reaction according to the reaction rate 1I
In an apparatus that uses the reaction heat of the adsorption reaction by switching the flow paths alternately and using the reaction heat of the adsorption reaction, the reaction rate is determined by the liquid level of the heat medium in the heat exchanger. It has been set up and configured.

Operation In the above configuration, the heating fluid heats the heat medium in the heat exchanger and evaporates it. The evaporated heat medium is passed through a gas duct into the reactor, the heat medium is adsorbed by the reaction solid, and the fluid to be heated is heated by the reaction heat generated at this time. As the absorption reaction progresses, the amount of the heat medium in the heat exchanger decreases, and the liquid level decreases. When the detector detects that the liquid level has decreased at a certain position, the flow paths of the heating fluid and the fluid to be heated are switched, and the reaction solid that has completed the appetizer reaction is heated with the heating fluid, The heat carrier is desorbed from the reactant solid. The desorbed heat medium is guided into the heat exchanger through the gas duct and condensed by the fluid to be heated. As this desorption reaction progresses, the amount of the heat medium in the heat exchanger increases and the liquid level rises. When the detector detects that the liquid level has risen to a certain certain point, the flow paths of the heating fluid and the fluid to be heated are switched to perform the adsorption reaction again. By detecting the liquid level of the heat medium in the heat exchanger in the above culm as an index representing the reaction rate of adsorption and desorption reactions, it is possible to switch the reaction direction at the optimal time. The operating efficiency of chemical heat pumps can be improved.

Example Hereinafter, one embodiment of the present eleventh light will be described based on the drawings.

In FIG. 1, 1 is a packed reactor, which is filled with a solid medium 2 for a chemical heat pump. Reference numeral 3 denotes a 21/1 vaporizer in which a heat medium 4 for a chemical heat pump is retained in a liquid state. 5 is a gas duct, filled reactor 1 and condenser/evaporator 34:3
! ! ! I'm passing through. Reference numeral 6 denotes a pipe line for the fluid to be heated, which is connected to the adsorption reaction heat transfer tube 8 disposed in the packed reactor 1 via the pulps 7a and 7b, and is connected to the upstream side of the pulp 7a and the downstream side of the pulp 7b. Branched on the side, large pulp 9
It is connected to a condensing heat exchanger tube 10 disposed inside the condenser/evaporator 3 via a and 9b. Reference numeral 11 denotes an evaporation heat exchanger tube, to which a pipe line 13 for a low heat source fluid is connected via a pulp 12. 14 is a heat medium liquid level gauge;
The high liquid level 15a and the low liquid level 15b are liquid levels that indicate the timing to switch the reaction direction, which has been logically determined in advance. Reference numeral 16 denotes a heat exchanger tube for desorption reaction, which is connected via a pulp 17 to a piping for a high-temperature heat source fluid for driving.

The effects of the above configuration will be explained below.

When carrying out the adsorption reaction step, the pulps 7a and 7b are opened and the pulps 9a and 9b are closed, and the pulp 12 is further opened and the pulp 17 is closed. In this state, the chemical heat pump heat medium 4 inside the condenser/evaporator 3
is heated with a low heat source fluid through a heat transfer tube 11 and evaporated by 8μ. The vaporized chemicals flow into the packed reactor 1 through the duct 5. In the packed reactor 1, the chemical heat pump heat medium 4 is adsorbed by the chemical heat pump Sendai (4 medium 2),
The generated reaction heat heats the fluid to be heated via the suction 1δ river heat transfer tube 8. As the η absorption reaction progresses, the exposure of the heat medium 4 for the mechanical heat pump in the condenser/evaporator 3 decreases. At the opening J:a when the heat medium liquid level gauge 14 detects the low liquid level 15b, in order to switch to the desorption process, the pulps 7a and 7b are closed and the pulps 9a,
9b, and then close the pulp 12 and listen to the pulp 17. In this state, the high-temperature heat source fluid for driving generates chemical heat and pump solid medium 2 through the heat exchanger tube 16 for desorption. The heated chemical heat pump heat medium 4 flows through the gas duct 5, flows into the condenser/evaporator 3, and is exposed via the condensing heat transfer tube 10. The heated fluid condenses the condenser/
There are 811 residues in the evaporator 3. As the desexing reaction progresses, the liquid level of the heat medium for the chemical heat pump in the condenser vaporizer 3 increases. As soon as the heat medium liquid level needle 14 detects the high liquid level 15a, the slag adsorption process is carried out. In this way, the high level 15a1 and the low level 15b are detected and the adsorption reaction and desorption reaction are switched at the optimal time. can improve the operating efficiency of the laminar heat pump.

Effects of the Invention As described above, according to the present invention, by detecting the liquid level of the heat medium in the heat exchanger as an index representing the reaction rate of adsorption and reaction, The application direction can be cut at the optimum time, and the operating efficiency of the chemical heat pump can be improved.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

Claims (1)

[Claims] 1. A reactor filled with a reaction solid, a heat exchanger that condenses or evaporates a heat medium, a gas duct that communicates the two, and a heating fluid and a heated object disposed in the reactor and heat exchanger. In an apparatus comprising a fluid flow path, the adsorption and desorption reactions between the reaction solid and the heat medium are performed alternately by switching the flow paths according to the reaction rate, and the reaction heat of the adsorption reaction is utilized. A chemical heat pump characterized in that a detector is provided for detecting the rate as a liquid level of the heat medium in the heat exchanger.