JPH0224059Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides an absorber/generator with an absorbent that absorbs heat as steam is released by heating and generates heat as it absorbs steam, and has a switchable operation for switching on and off. providing means for transporting heat from the flexible heating device to the absorber/generator or from the absorber/generator to the heat recovery section;
The present invention relates to a chemical heat pump provided with an evaporator/condenser that transfers steam to and from the absorber/generator.

[Conventional technology]

Conventionally, to configure the above chemical heat pump, as shown in FIG. The heat transporting fluid is configured to be circulated through the heating section 7B of the hot water storage tank 6 by the flow path 9 with the pump _P1 ,
A flow path 11 with a pump P ₂ extends between the evaporator/condenser 2 and the heat exchanger 10 or the heating section 7A of the hot water storage tank 6.
It was configured so that the heat transport fluid was circulated through the flow paths 9 and 11, and was configured so that it could be switched between the heat storage state and the heating state shown below by means of valve devices 12a and 12b provided in the flow channels 9 and 11. ).

(1) Heat storage state [See Figure 5 A] The high-temperature heat transfer fluid from the heating device 8 is supplied to the absorber/generator 1, and the absorbent in the absorber/generator 1 is heated by the heat transfer fluid to absorb The vapor is released from the agent and the vapor flows into the evaporator/condenser 2. At the same time, the low-temperature heat transfer fluid from the hot water storage tank heating section 7A is supplied to the evaporator/condenser 2, where the steam is cooled and condensed by the heat transfer fluid, and the heat transfer fluid is heated by the heat of condensation. heat up. Then, the heated heat transport fluid is supplied to the hot water tank heating section 7A, and the water in the hot water tank 6 is heated by the heat transport fluid.

(2) Heating state [See Figure 5 B] The heat transfer fluid that has taken in heat from the outside in the heat input heat exchanger 10 is supplied to the evaporator/condenser 2, and is stored in the evaporator/condenser 2. The condensate is heated by a heat-carrying fluid to generate steam, which flows into the absorber-generator 1. At the same time, the low-temperature heat transfer fluid from the hot water storage tank heating section 7B is supplied to the absorber/generator 1, where the vapor from the evaporator/condenser 2 is absorbed by the absorbent, and the absorbed heat is heats the heat transfer fluid. Then, the heated heat transport fluid is supplied to the hot water tank heating section 7B, and the water in the hot water tank 6 is heated by the heat transport fluid.

[Problem that the invention attempts to solve]

However, in the heat storage state, the electric pump P ₁ Since a high-temperature heat transfer fluid is circulated, equipment costs and operating costs are high, and repairs are likely to be troublesome and costly, so there is room for improvement.

That is, the pump P ₁ , which withstands high temperatures, is expensive,
Furthermore, when pumping high-temperature liquid with Pump P ₁ , an expansion tank must be attached to vent gas and absorb volume changes, which increases equipment costs and requires a large amount of expensive electricity to drive the pump. However, the operating costs are high, and furthermore, it is often necessary to replace the heat transfer fluid due to its deterioration or to repair the pump _P1 due to its failure, which is disadvantageous in terms of repair.

The purpose of this invention is to make a means for transporting heat from a heating device to an absorber/generator or from an absorber/generator to a heat recovery section advantageous both in terms of cost and repair. .

[Means for solving problems]

The characteristic structure of the present invention is that a heat pipe is provided across the absorber/generator, the heating device, and the heat recovery section, and an on-off valve located between the absorber/generator, the heating device, and the heat recovery section is connected to the heat pipe. The functions and effects are as follows.

[Effect]

In other words, in the heat storage state, the on-off valve is closed and the heating device is activated so that the heat from the heating device is efficiently transported to the absorber/generator by the heat pipe instead of being transported to the heat recovery section by the heat pipe. Make it.

In the heating state, the on-off valve is opened and the heating device is stopped so that the heat from the absorber/generator is transported to the heat recovery section by the heat pipe.

[Effect of idea]

As a result, compared to a conventional configuration that includes a high-temperature pump and an expansion tank, the equipment cost is lower, no electricity is required for heat transport, and the combination of heat pipes and on-off valves, which requires almost no repairs, can generate sufficient heat. It has now become possible to provide a chemical heat pump that has a transport function and is excellent in terms of both economy and management.

〔Example〕

Next, an example will be shown with reference to FIG.

An absorber/generator 1 containing an absorbent that absorbs heat as vapor is released due to heating and generates heat as the vapor is absorbed, and an evaporator/condenser 2 that transfers steam between the absorber/generator 1 and the absorbent/generator 1. A hot water storage tank 6 is installed inside the heat insulation case 3 and connected to a water supply pipe 4 and a hot water outlet pipe 5.

A heat pipe 14 is provided across the absorber/generator 1, an electric heating device 8 that can be switched on and off by a switch 13, and a hot water storage tank 6, and an on-off valve disposed between the heating device 8 and the hot water storage tank 6. 15 is attached to the heat pipe 14. In addition, a flow path 11 with a pump P that circulates the heat transport fluid between the evaporator/condenser 2 and the heat input heat exchanger 10 or the heat exchanger 7A that heats the water stored in the hot water storage tank 6 is provided, so that the heat storage state is maintained. A valve device 12 for switching between the heating state and the heating state is provided in the flow path 11.

In other words, the heating device 8 is activated and the on-off valve 15 is closed, so that the heat from the heating device 8 is transported to the absorber/generator 1 through the heat pipe 14, and the heat from the evaporator/condenser 2 is transferred to the flow path 11. The heat storage state is such that the heat transfer fluid is carried to the hot water tank 6, and the heating device 8 is stopped and the on-off valve 15 is opened to transfer the heat from the absorption/generator 1 to the hot water tank 6 through the heat pipe 1.
4, and a heating state in which the heat from the heat input heat exchanger 10 is transported to the evaporator/condenser 2 by the heat transport fluid in the flow path 111 is alternately obtained.

[Another example]

Next, another embodiment will be described.

In place of the hot water storage tank 6, for example, a heat exchanger for heating or the like may be provided, and these are collectively referred to as a heat recovery section 6.

The configuration and arrangement of the heating device 8 can be modified in various ways.
For example, it may be modified as follows.

(b) As shown in Figures 2 and 4, the heating device 8
and the position of the absorber/generator 1 is reversed.

(b) As shown in Figures 3 and 4, the heating device 8
is of a closed type steam heating type so that a large number of heat pipes 14 can be heated uniformly.

A suitable manual or automatic cooperative operating device may be provided for switching on and off the heating device 8 and operating the on-off valve 15 and valve device 12.

[Brief explanation of the drawing]

Figure 1 is a conceptual diagram showing an embodiment of the present invention;
4 to 4 are conceptual diagrams showing different embodiments of the present invention, and FIGS. 5A and 5B are conceptual diagrams of a conventional example. 1... Absorber and generator, 2... Evaporator and condenser, 6
... Heat recovery section, 8 ... Heating device, 14 ... Heat pipe, 15 ... Opening/closing valve.

Claims (1)

[Scope of utility model registration request] Absorber/generator 1 absorbs heat as vapor is released due to heating and generates heat as vapor is absorbed.
provided with a means for transporting heat from the heating device 8, which can be freely switched on and off, to the absorber/generator 1, or from the absorber/generator 1 to the heat recovery section 6;
A chemical heat pump is provided with an evaporator/condenser 2 that transfers steam to and from the absorber/generator 1, wherein the heat transport means includes the absorber/generator 1,
From a heat pipe 14 extending between the heating device 8 and the heat recovery section 6, and an on-off valve 15 attached to the heat pipe 14 and disposed between the heating device 8, the absorber/generator 1, and the heat recovery section 6. Chemical heat pump.