JPS5847972A - Single and double effect absorption refrigerator - 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 a two-effect absorption refrigerating machine that uses solar hot water as a main heat source and city gas as an auxiliary heat source.

This type of double-effect absorption cooling AM is used to absorb cold water when the load (= vs. the temperature of the low-temperature heat source fluid such as solar hot water is sufficiently high or there is sufficient flow, i.e., when there is sufficient energy). Cooling can be achieved by performing the so-called heavy-effect operation, in which IIIR from the refrigerant is sent to the low-temperature fluid heat regenerator by a pump, and the concentrated liquid regenerated by the regenerator is sprayed again to the absorber. However, when the energy of the low-temperature heat source fluid is insufficient, an electrocardiogram is used to supplement the high-temperature fluid heat source such as city gas or other combustion heat or high-temperature (pressurized steam), and a low-humidity fluid heat source regenerator is used to regenerate it intermediately. The absorbed liquid (hereinafter referred to as the -th intermediate liquid) is sent to a high-temperature fluid heat source regenerator through an absorption liquid line having another pump, and the intermediate concentrated liquid concentrated in the regenerator is sent to the high temperature fluid heat source regenerator. (hereinafter referred to as intermediate liquid) is further compressed in a low-temperature regenerator and then sprayed on the absorber.It is customary to carry out the so-called dual-effect combination operation for cooling. By the way, even when the low-humidity fluid heat regenerator does not have a regeneration function, such as when the temperature of the low-temperature heat source fluid is lower than the temperature of the replacement fluid from the field collector, as described above, the dilute fluid from the absorber is transferred to the pump ( (hereinafter referred to as the first pump), first
After the liquid is passed through the °C low-temperature hidden heat source regenerator:
Use another pump (hereinafter referred to as the second pump) to collect the above-mentioned fFl rental path (hereinafter referred to as WtflI@ between −th and ψ).
The high vortex fluid heat source is sent to the heat source via the
There is a problem with the absorption liquid circulation cycle during so-called two-direct effect operation that is irrational when using only high-temperature fluid heat sources.

In view of the folding point, the present invention provides a case in which the low temperature fluid heat source regenerator performs two-effect one-pot conversion using only a high m fluid heat source having a regeneration function. is sent to the C high m fluid thermal regenerator through a bypass, and the whole refrigerator system is assumed to be the same.

Hereinafter, embodiments of the present invention will be explained based on the drawings.
(21 is a high-temperature fluid heat source regenerator that heats the refrigerant from the primary intermediate liquid by using oil or other combustion heat, high-temperature, high-pressure steam, etc. as an auxiliary heat source; (3;
is a low-temperature regenerator that further heats and separates the refrigerant from the secondary intermediate liquid using the refrigerant vapor separated by the high-temperature heat source regenerator (!) as a heat source, (41 is appropriately separated from each regenerator +11 (2) 131) A condenser that cools and condenses the refrigerant, (5J is an evaporator that obtains cold water for air conditioning by using the latent heat when spraying and vaporizing the liquid refrigerant from the condenser (41);
6) distributes the regenerated concentrated liquid from each of the regenerators (11121131) to absorb the vaporized refrigerant from the evaporator (5), maintains the inside of the evaporator at a low pressure, and makes it possible to continuously supply cold water. The absorbers 171 and 18) are a low temperature heat exchanger and a high temperature heat exchanger, which are connected to a refrigerant vapor pipe (9), a refrigerant liquid down pipe 01. Refrigerant circulation path a3 with refrigerant pump 1111
, the first pump, and the tank liquid pipe line I, which has the first pump n3, and the second pump Q9.
A refrigeration cycle μ is constructed by connecting the primary intermediate liquid pipe oe with T, the secondary intermediate liquid pipe 0η, and the concentrated liquid pipe al. In addition, a side pipe □9 is provided between the low temperature fluid heat source regenerator (0 and the S liquid pipe @al).

The low humidity fluid heat source regenerator 1! ) has a low-temperature fluid supply pipe■
The pipe line 1 is connected to a temperature detector EL for detecting the temperature of the low-temperature fluid, and a signal from the detector causes the second pump O9 to be turned on and off via the regulator C. Control is exercised.

Note that (2) is a water heater for heating attached to the high-temperature fluid heat source regenerator 113c, and (2) is a valve that is opened during operation to obtain cold water for cooling, and is closed when no cooling operation is performed.

Here, °c4 is a three-way valve disposed on the outlet side of the low-temperature heat exchanger (7) for the replacement liquid #l liquid pipe #1ll041, and the branch pipe surface connects to the -ash intermediate liquid pipe line ( ■The high temperature heat exchanger 181 of e is connected to the population side.Then, the three-way valve ■ is connected to the temperature sensor C211 through the regulator.
The opening/closing operation is performed from the second step. In addition, ■ is a damper provided with a camphor liquid pipe a41 on the discharge side of the first pump I and a branch pipe rQ (two), and ■ is a damper provided with the first pump I discharge side camphor liquid pipe a41 and a branch pipe There are two valves.

The single-in-line dual-type dynamic absorption refrigerating machine with the configuration shown in FIG. The cryogenic fluid heat source is e.g. ) If the low-temperature fluid does not have a regeneration function, such as when the temperature of the low-temperature fluid is lower than that of the f4 liquid, the The signal from the detector QI+ causes the controller to
I: The switching phase is opened and the operation of the second pump □ is stopped so that the C30,000 valve (2) communicates the tank liquid pipe line a41 and the branch pipe cn. Absorption liquid circulation is good~
Double effect operation is performed with .

An absorption refrigerator with 21 effects in one section having such a configuration is as follows:
When t=S °C during dual-effect operation, the operating energy of the second pump n9 (for example, 0.5 to several kilowatt-hours of energy) can be saved, and the low-temperature fluid does not have any regeneration function. Bypassing the heat source regenerator..., the camphor solution passes through the high temperature heat exchanger 1811 and is heated to a high temperature fluid heat source regenerator (
Sent to 21 and given Ren a low-temperature regenerator +31, a low-temperature heat exchanger (
71 to the absorber (6), forming a thermally efficient absorption liquid circulation cycle, and the low-temperature fluid heat source has a regeneration function! In case of T, the persimmon ff! Conduit I
Open/close the three-way valve ■ to cut off the communication between the branch pipe 1 and the branch pipe 1.
It is possible to carry out combined operation of 8 effects of 1 part and 2 effects of 1 part with a simple configuration of fT, and the system as a whole can be operated in an energy-saving manner and in a rational manner.

Although not shown, a flow detector is electrically installed in the low-temperature fluid supply vIlf (2) instead of the I@dark detector +2υ. I? It detects the amount of heat source of the body, and the temperature is also good.
ss and the liquid-liquid pipe port 4, so that the absorption liquid circulation mode can be switched by switching these on-off valves depending on the low temperature fluid heat source.

Also: During direct effect operation, the replacement fluid is the low temperature fluid heat source regenerator 111
A check valve is not shown on the discharge side of the second pump processor 9 of the primary intermediate liquid conduit Oe to prevent it from being combed. ) or the valve ω is preferably closed by a signal from a temperature sensor Q11 via a regulator (2), and the first pump 0
The replacement fluid discharged from 31 is Kf! 7 to AfI 1 body heat source regenerator (2)! -C according to the lift height up to the damper (2
) is preferably set to C8.

In addition, - during the combined direct and direct effect operation, it is desirable that the data pump (2) be set at the lift of the 411 liquid discharged from the first pump 03 to the low temperature fluid heat source regenerator (1). .

As described above, the present invention connects the low-temperature heat exchanger output low-temperature heat exchanger liquid blind path of the tank liquid and the intermediate liquid pipe line from the l1iii hot heat exchanger inlet side to the intermediate liquid pipe line by a °C branch pipe, and Low temperature flowing C
1. Since it is a direct-acting absorption refrigerating machine, the entire refrigerating system can be operated in an energy-saving and rational manner with a simple configuration.

[Brief explanation of the drawing]

The drawing is a block diagram of a non-T circuit according to an embodiment of the present invention. In the figure, the -am line, broken line, and solid line arrows indicate - type dynamic operation, respectively.
- The absorption liquid circulation cycle during direct and dual effect combined operation and dual effect operation is different. 11...Low temperature fluid heat source regenerator (2)...ll1
ii Hot fluid heat source regenerator (6)...Absorber 1'
F1181...Low temperature and high temperature heat exchanger Q3...
First pump I...Dilute liquid pipe [151...Second pump +161...-Next intermediate liquid pipe r, +b.
...Temperature detector 0...Mu ■I ■...Three-way valve surface...Branch pipe

Claims (1)

[Claims] (1) Solar hot water - IP-adjusted double-effect absorption cold and hot water that uses low-temperature water such as wastewater as the main heat source and uses high-temperature fluids such as city gas and other combustion heat and high-temperature and high-pressure steam as auxiliary heat sources.
(2) The liquid S flows from the absorber through the low temperature heat exchanger to the low temperature fluid heat source regenerator. Absorbing liquid flows from the regenerator to the high temperature fluid heat e regenerator through the temperature vessel Tl.
The Aiai heat exchanger of the absorption liquid pipe with 14 nibonp is connected with a °C branch pipe through the closed valve on the side of the heat exchanger inlet, and the low-temperature fluid heat
&aL° [Operate the above-mentioned on-off valve and
An absorption chiller with a one-bust, two-place effect, characterized in that the absorption 1gi circulation cycle is switched.