JPS58104472A - Air-cooling device - 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 The present invention relates to waste heat utilization in a cooling system having a generator, an absorber, a condenser, an evaporator and a pump.

In conventional cooling systems, such as absorption refrigerators, a concentrated solution is pumped from an absorber to a generator.

It is then heated in a generator to generate refrigerant vapor.

The refrigerant vapor is sent to a condenser where it is cooled and liquefied.

In doing so, the refrigerant vapor releases heat. The liquefied refrigerant is sent to the evaporator, where it absorbs heat and is vaporized before returning to the absorber. On the other hand, the dilute solution, which has released refrigerant vapor in the generator, is returned to the absorber and absorbs the refrigerant from the evaporator. At this time, absorbed heat is generated. In conventional cooling systems, the heat generated in the condenser and absorber is disposed of in a cooling tower or the like via water.

The present invention aims to provide an apparatus that can effectively utilize the heat generated in the above-mentioned condenser and absorber without discarding it all in cooling towers.

Embodiments of the present invention will be described below with reference to the attached drawings, which use an absorption refrigeration cycle. Figure 1 shows the absorber.

FIG. 2 is a cycle diagram showing that heat generated in a condenser is applied to a concentrated solution sent from an absorber to a generator to preheat it. The absorber 1 is filled with a solution consisting of a refrigerant (eg, Freon 22, etc.) and a solvent (eg, dimethylformamide, etc.).

The solution passes through line 2 and is sent by pump 3 to generator 11 where it is heated and generates refrigerant vapor. Refrigerant vapor is sent to condenser 1
4, passes through a pipe 15 and a throttle valve 16, and is transferred to an evaporator 1.
At step 7, it absorbs heat from its surroundings, becomes vaporized, and returns to the absorber. on the other hand,
The solution from which the refrigerant vapor has been released in the generator 11 is transferred to the conduit 18.
It passes through the throttle valve 4 and returns to the absorber 1. Here, in the absorber 1, an exothermic reaction occurs when the solution absorbs the refrigerant. Therefore, it is necessary to cool the absorber 1. Furthermore, in order to condense the refrigerant in the condenser 14, it is necessary to cool the condenser 14. Note that water will be used for cooling here.

In cooling the absorber 1, the cooling water passes through the pipe 6 and flows into the absorber 1.
is cooled and flows through line 12 to line 10. In addition, when cooling the condenser 14, the cooling water passes through the condenser 1 through the pipe 9.
4 is cooled, passes through conduit 13, and flows through conduit 10. The cooling water passing through the pipe 10 exchanges heat with the concentrated solution passing through the pipe 2 in the heat exchanger 7, radiates heat in the pipe 6 and the cooling tower 8, passes through the pump 19, and flows into the pipes 5 and 9. Here, the concentrated solution passing through line 2 will be preheated with cooling water in a heat exchanger 7 before entering the generator 11.

Here the concentrated solution must be hotter than the cooling water, but
Since the cooling water absorbs the heat generated in the absorber, heat exchanger 7
The cooling water will impart heat to the concentrated solution.

Figure 2 shows the absorber and
FIG. 2 is a system diagram for using heat generated in a condenser to heat hot water. As in Fig. 1, absorber 1, condenser 14
The cooling water is heat exchanged with hot water in a hot water storage tank 2o that has a built-in heat exchanger. If the hot water has not reached a predetermined temperature, it is heated by an auxiliary heater 22 and discharged through a valve 23.

Hot water that is not tapped is returned to the hot water storage tank through a pipe 21. 24 is a valve. Incidentally, numerals 1 to 19 are the same as those in FIG. 1, and their operations are the same, so their explanation will be omitted.

As described above, the present invention provides an absorption heat pump cycle,
This system combines the absorber and condenser of the absorption heat pump cycle with a cooling water circuit that includes a heat exchanger and a cooling tower, thereby making effective use of heat, reducing the capacity of the cooling tower and generator, and providing additional support. This reduces the amount of heat source used. :,.

1

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the cooling device according to the embodiment of the present invention;
The figure is an explanatory diagram of a cooling device according to a different embodiment of the present invention. 1------Absorber, 3, 19 @----"・Pump, 4゜16... Throttle valve, 7... Heat exchanger, 8...・Cooling tower, 11... Generator, 14... Condenser, 17... Evaporator,
20...Hot water storage tank, 22...Auxiliary heater, 23.24...Valve. Name of agent: Patent attorney Toshio Nakao and one other name
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Claims (1)

[Claims] An absorption chiller including a generator, an absorber, a condenser, an evaporator, and a pump is connected to a cooling water circuit including the absorber, the condenser, a heat exchanger, a cooling tower, and a circulation pump, and A cooling device that preheats the absorption liquid with cooling water via a heat exchanger.