KR-20260067202-A - ABSORPTION HEAT PUMP OPERATING TEMPERATURE VARIABLE APPARATUS AND METHOD

Abstract

An adsorption heat pump operating temperature variable device according to one aspect of the present invention is an adsorption heat pump operating temperature variable device located between a place of use that heats the first refrigerant by receiving cold heat from the first refrigerant and a first cooler that cools the second refrigerant, wherein the adsorption heat pump comprises a desorption reactor, a condenser, an evaporator, and an adsorption reactor, and the operating temperature variable device may include a first refrigerant circulation line passing through the evaporator, a second refrigerant circulation line passing through the condenser, and a first heat exchanger disposed behind the evaporator and disposed behind the first cooler to exchange heat between the first refrigerant and the second refrigerant.

Inventors

• 김진섭
• 김우경
• 정융
• 정유준
• 심재환

Assignees

• 한국기계연구원

Dates

Publication Date

20260512

Application Date

20241105

Claims (15)

1. An operating temperature variable device for an adsorption heat pump located between a place of use that heats the first refrigerant by receiving cold energy from the first refrigerant and a first cooler that cools the second refrigerant, wherein the adsorption heat pump comprises a desorption reactor, a condenser, an evaporator, and an adsorption reactor. The above-mentioned variable operating temperature device is, A first refrigerant circulation line passing through the above evaporator and the above-mentioned place of use; A second refrigerant circulation line passing through the condenser and the first cooler; and A first heat exchanger disposed at the rear of the evaporator and at the rear of the first cooler to heat exchange the first refrigerant and the second refrigerant; An adsorption heat pump operating temperature variable device characterized by including
2. In Article 1, The above first refrigerant circulation line is, The evaporator, the first heat exchanger, and the place of use are installed sequentially along the flow direction of the first refrigerant, and The above second refrigerant circulation line is, An adsorption type heat pump operating temperature variable device characterized by the condenser, the first cooler, and the first heat exchanger being sequentially installed along the flow direction of the second refrigerant.
3. In Article 1, An adsorption heat pump operating temperature variable device characterized by the first cooler cooling the second refrigerant by exchanging heat between the outside air and the second refrigerant.
4. In Article 1, An adsorption heat pump operating temperature variable device characterized by the above-mentioned first refrigerant flowing into the above-mentioned evaporator and the operating temperature of the above-mentioned evaporator decreasing.
5. In Article 1, An adsorption heat pump operating temperature variable device characterized by the fact that the second refrigerant flows into the condenser after being discharged from the first heat exchanger, thereby reducing the operating temperature of the condenser.
6. In Article 1, A temperature sensor that measures the temperature of the outside air; and A control unit that selectively controls the operation of the first cooler based on the measured value of the temperature sensor; An adsorption heat pump operating temperature variable device characterized by further including
7. In Article 6, The above control unit is, If the above ambient temperature exceeds a preset range, the heat exchange amount between the first refrigerant and the second refrigerant is increased by a preset value, and An adsorption heat pump operating temperature variable device characterized by reducing the amount of heat exchange between the first refrigerant and the second refrigerant by a preset value when the above-mentioned ambient temperature is below a preset range.
8. In Article 1, A second cooler that cools and circulates a third refrigerant; and A second heat exchanger positioned at the rear of the above-mentioned place of use, which cools the first refrigerant by heat-exchanging the first refrigerant and the third refrigerant; An adsorption heat pump operating temperature variable device characterized by further including
9. In Article 8, An adsorption heat pump operating temperature variable device characterized by further including a third refrigerant circulation line installed between the second cooler and the second heat exchanger through which the third refrigerant flows.
10. In a method for varying the operating temperature of an adsorption heat pump comprising a desorption reactor, a condenser, an evaporator, and an adsorption reactor, An evaporator operating temperature control step in which a first refrigerant is introduced into the evaporator to lower the operating temperature of the evaporator; and A condenser operating temperature control step in which a second refrigerant is introduced into the condenser to lower the operating temperature of the condenser; A method for varying the operating temperature of an adsorption heat pump, characterized by including
11. In Article 10, The above condenser operating temperature control step is, A method for varying the operating temperature of an adsorption heat pump, characterized in that the second refrigerant is introduced into the first cooler and exchanges heat with the outside air.
12. In Article 11, The above condenser operating temperature control step is, If the above ambient temperature exceeds a preset range, the amount of heat exchange between the above ambient and the second refrigerant is increased by a preset value, and A method for varying the operating temperature of an adsorption heat pump, characterized by reducing the amount of heat exchange between the outside air and the second refrigerant by a preset value when the temperature of the outside air is below a preset range.
13. In Article 11, The above condenser operating temperature control step is, A method for varying the operating temperature of an adsorption heat pump, characterized in that the first refrigerant discharged from the evaporator and the second refrigerant discharged from the first cooler mutually exchange heat in a first heat exchanger.
14. In Article 13, The above condenser operating temperature control step is, A method for varying the operating temperature of an adsorption heat pump, characterized in that the second refrigerant flows out of the first heat exchanger and flows into the condenser.
15. In Article 13, The above condenser operating temperature control step is, A method for varying the operating temperature of an adsorption heat pump, characterized in that the first refrigerant flows out of the first heat exchanger and flows into the place of use.

Description

Absorption Heat Pump Operating Temperature Variable Apparatus and Method The present invention relates to a device and method for varying the operating temperature of an adsorption heat pump, and more specifically, to a device and method capable of adjusting the operating temperature of an adsorption heat pump to match the adsorption and desorption characteristics of an adsorbent. An adsorption heat pump is a device composed of a desorption reactor, an adsorption reactor, a condenser, and an evaporator that produces cold energy through the adsorption and desorption of a working fluid and an adsorbent, and the adsorption and desorption characteristics of the adsorbent vary depending on the temperature and pressure within the adsorption and desorption beds of the desorption reactor and the adsorption reactor. In other words, if the adsorption and desorption characteristics of the adsorbent match the operating conditions of the adsorption heat pump so that the adsorption and desorption reaction occurs effectively, the adsorption heat pump can operate well in a cyclic form. However, if the adsorption and desorption characteristics of the adsorbent do not match the operating conditions of the adsorption heat pump, there is a problem in that it is difficult to realize the expected performance of the adsorption heat pump. FIG. 1 is a schematic diagram of an adsorption heat pump operating temperature variable device according to a first embodiment of the present invention. Figure 2 shows the amount of adsorption and desorption of the adsorbent according to the saturated water vapor pressure of the working fluid before controlling the operating temperature of the adsorption heat pump. Figure 3(a) shows the operating temperature of the adsorption heat pump before regulation. Figure 3(b) shows the saturated water vapor pressure of the working fluid before the operating temperature control of the adsorption heat pump. Figure 4 shows the amount of adsorption and desorption of the adsorbent according to the saturated water vapor pressure of the working fluid after controlling the operating temperature of the adsorption heat pump. Figure 5(a) shows the operating temperature of the adsorption heat pump after adjustment. Figure 5(b) shows the saturated water vapor pressure of the working fluid after controlling the operating temperature of the adsorption heat pump. FIG. 6 is a schematic diagram of an adsorption heat pump operating temperature variable device according to a second embodiment of the present invention. Figure 7 is an enlarged view of part A shown in Figure 6. FIG. 8 is a flowchart illustrating a method for varying the operating temperature of an adsorption heat pump according to one embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are to be illustrated and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this invention, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that in the accompanying drawings, identical components are indicated by the same reference numerals whenever possible. Furthermore, detailed descriptions of known functions and configurations that may obscure the essence of the present invention will be omitted. For the same reason, some components in the accompanying drawings may be exaggerated, omitted, or schematically depicted. Hereinafter, an adsorption heat pump operating temperature variable device according to the first embodiment of the present invention will be described. FIG. 1 is a schematic diagram of an adsorption heat pump operating temperature variable device according to a first embodiment of the present invention. Referring to FIG. 1, the adsorption heat pump (110) is configured such that a desorption reactor (111), a condenser (112), an evaporator (113), and an adsorption reactor (114) are interconnected via multiple lines (115, 116), and the flow direction of the working fluid is controlled by opening and closing a valve (117), thereby allowing the desorption reactor (111) and the adsorption reactor (1