A METHOD OF SEPARATION BY SOLIDIFICATION USED IN ABSORPTION HEATING COOLING SYSTEMS WORKING WITH CRYSTALLIZATION / FREEZING / ICING METHODS

Abstract

An absorption heating and cooling system having an absorber, which allows the gaseous refrigerant to be absorbed by the absorbent, condensed by its heat, and thus the liquefaction of the gaseous refrigerant while the heating operation takes place, and an evaporator that allows the liquid refrigerant to evaporate by heating and thus cooling process to be carried out, wherein a separation unit using a method of separation by solidification employed which works through the icing/crystallization/freezing methods and which enables the separation the refrigerant-absorbent mixture.

Claims

1. An absorption heating and cooling system comprising an absorber, which allows the gaseous refrigerant to be absorbed by an absorbent, condensed by giving up its heat, and thus the liquefaction of the gaseous refrigerant while the heating operation takes place, and an evaporator that allows liquid refrigerant to evaporate by taking heat and thus cooling process to be carried out, the system further comprising: a separation unit using a method of separation by solidification employed which works through the icing/crystallization/freezing methods and which enables the separation of the refrigerant-absorbent mixture.

2. A separation method in a absorption heating and cooling system comprising the process steps of vaporization of liquid refrigerant by taking heat in an evaporator, and realization of the cooling process, and the absorption of evaporated refrigerant in the gaseous state by an absorber through the high concentration refrigerant-absorbent mixture, thereby transferring its energy to heat it and turning into the liquid phase, wherein: once the low concentration refrigerant-absorbent mixture has been formed, the liquid refrigerant is directed to the evaporator by separating the liquid refrigerant in the separation unit using the different freezing/icing/crystallization method, while the high concentration refrigerant-absorbent mixture is directed to the absorber.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0017] In order to be able to understand the advantages of the present invention together with the additional elements, it is necessary to evaluate it with the figures explained below.

[0018] FIG. 1 Represents the table showing the separation method of the invention used in absorption heating and cooling systems.

[0019] FIG. 2 Is the schematic view of the process steps of the separation method used in absorption heating and cooling systems.

REFERENCE NUMBERS

[0020] 100—Absorption heating and cooling system [0021] 101—Absorber [0022] 102—Separation unit [0023] 103—Evaporator [0024] 104—Low concentration refrigerant absorbent mixture [0025] 105—High concentration refrigerant absorbent mixture [0026] 106—Liquid refrigerant [0027] 107—Gaseous refrigerant [0028] A—Evaporation of refrigerant [0029] B—Condensation and mixture of the refrigerant and absorbent [0030] B—Separation of the refrigerant and absorbent

DETAILED DESCRIPTION OF THE INVENTION

[0031] FIG. 1 represents the table showing the separation method of the invention used in absorption heating and cooling systems (100). The invention enables to reduce the energy consumption in heating and cooling systems in these days when the importance of energy efficiency is increasing and energy prices are rising.

[0032] The invention comprises the absorber (101) which allows gaseous refrigerant (107) to liquefy while the heating process is carried out and the gaseous refrigerant (107) is absorbed by the absorbent and condensed giving up its heat. The evaporator (103) enables the evaporation of the liquid refrigerant (106) by heating and provides the cooling process to take place. There is a separation unit (102) using a method of separation by solidification employed which works through the icing/crystallization/freezing methods and which enables the separation the refrigerant-absorbent mixture. A refrigerant-absorbent mixture to be separated in the said separation unit (102) is preferred usually as a low concentration refrigerant-absorbent mixture (104).

[0033] FIG. 2 is the schematic view of the process steps of the separation method used in absorption heating and cooling systems (100). In the evaporator (103), the liquid refrigerant (106) is gasified by taken heat and the cooling process is carried out (A).

[0034] Evaporated refrigerant (107) is absorbed in the gaseous state by the high concentration refrigerant-absorbent mixture through the absorber (101), thereby transferring its energy to give off heat and passes to the liquid phase (B). Once the low concentration refrigerant-absorbent mixture (104) has been formed, the liquid refrigerant (106) is directed to the evaporator (103) by separating the liquid refrigerant in the separation unit (102) using the different freezing/icing/crystallization method, while the high concentration refrigerant-absorbent mixture (105) is directed to the absorber (101) (C). The cycle is then completed when the refrigerant (106) evaporated in the evaporator (103) has carried out the cooling process and passed to the absorber (101).

[0035] In relation to the crystallization/freezing processes used in the mentioned separation method, there are examples like the crystallization/freezing methods with evaporation, crystallization/freezing methods with vacuum, crystallization/freezing/icing methods with the use of different liquid refrigerant, direct or indirect crystallization/freezing/icing methods, crystallization/freezing/icing methods with eutectic freezing, crystallization/freezing/icing methods with film freezing system, crystallization/freezing/icing methods with progressive freezing desalination, together with the examples of crystallization, acceleration, dimension formation with ultrasound and so on.

[0036] In the invention, various refrigerants can be employed in the same system. Also, different pairs of refrigerant—absorbent types can be used. It may be possible to employ membranes considering the further purification of the refrigerant. The number of absorber (101) can be increased or the temperature difference can be increased with the use of absorber in series. As it can produce steam with the absorber (101), it is possible that the steam produced will be directed to another absorber or system. Also, any sorbent product, such as adsorbent, may be used instead of the absorbent.

[0037] The number of evaporators (103) can be increased and heat recovery systems can be added between absorber (101). Expansion valve application in various numbers and types can be added to the system. It is possible to operate at different pressures and/or temperatures. Expansion valve can be added in order to create a pressure difference in the system and control the flow rate. In the evaporator (103), the temperature of the refrigerant at the same pressure can be changed by adding different compounds to the refrigerant.