JPS5811362A - Absorption type heat pump for rankine cycle - 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 Rankine cycle absorption heat pump for driving a Rankine cycle.

Conventionally, this type of equipment was shown in Figure 1.In Figure 0, (1) is a generator that heats a dilute solution of absorbent to generate refrigerant vapor, and (2) is a generator that cools and condenses the refrigerant vapor. (3) a evaporator that evaporates the refrigerant liquid; (4)
is an absorbent that absorbs refrigerant vapor! It is an absorber capable of absorbing lIm liquid, and the generator (1) and iIkM 6 F2) are equipped with refrigerant vapor pipes (5), and the condenser (2) and evaporator (3) are equipped with a refrigerant pump (6). The evaporator 3) and absorber (4) are connected by a refrigerant vapor pipe 8) through a refrigerant liquid pipe (7), and the absorber 5 (4) and generator (1) are connected to a bath liquid pump (9). ) are connected respectively between the liquid tube % where the bath liquid flows and the dilute solution tube where the dilute solution flows, - between the solution tube IQ and the dilute solution tube and f #L the bath liquid is heat recovery heat The heat source heat exchanger a3. ．． A41 is installed, a silent exchanger for condensation (1) is installed in the condenser (2), and nozzle 4 for spraying I# bath solution is installed in the absorber (4), and a sieve part 'fr+I is used. User side ￥￥A
The main exchanger lη is installed, and the absorber heat pump system is constructed by this. On the other hand, the Hunking cycle system is equipped with a heat recovery heat exchanger for the expander and a heat recovery heat exchanger-1 condenser. This ranking cycle system and absorption type heat pump system are used as heat exchangers a on the user side.
A load device, such as a generator or a W iso, is operated by the power of a 0 or 1 J2R Rankine cycle system in which .eta. and .eta. are connected in a shelf-like manner.

Next, we will explain the operation of the 0 generator (bath liquid #'i in υ
As shown in Figure 2 (■), the temperature is near T, the concentration is ξ1 (however, the pressure is in the P1 state and cannot be accurately displayed on the diagram), and the temperature increases to F by releasing the refrigerant vapor. However, it is heated by the heat source heat exchanger a3, and the second
A state of density 6 is reached as shown in the figure (■). On the other hand, the shape jt3 (pressure P11!ET
, ) passes through the refrigerant vapor pipe (5) to the condenser (
2), where it is cooled by the condensing heat exchanger am and condensed and liquefied at a temperature T6'.

The liquefied refrigerant is pressurized by the pump (6) (in this state #-1 stone 2, the temperature is Tc in the state of ■, but the pressure is in the state of T2, which cannot be shown in Fig. 2 ◎) and evaporates. Here, it is heated by the heat source heat converter 04, becomes a liquid with a temperature [T, shown in the fJz diagram (6), and further becomes vapor, which is shown by the same point ■, and is transferred to the absorber 14. )
Go to 9. On the other hand, the yield liquid (the state shown in Figure 2 ■) whose absorbent concentration has become ξ2 by releasing refrigerant vapor in the generator (1) is as follows.
The pressure is increased by the solution pump (9) and the pressure becomes T2, and the temperature rises by the heat recovery heat f exchange W1121, and the temperature If approaches T in the state shown in Figure 2 ■. 4 (4) Spray on the instep, absorb the refrigerant vapor from the refrigerant vapor pipe (8) and preheat the dilution heat to the state shown in Figure 2 ■ (Pressure P2. Temperature - T3. #degree ξ,) It becomes a dilute solution from the S# solution tube (11), passes through the heat recovery heat exchanger, exchanges heat with the concentrated solution, and returns to the generator 11).On the other hand, in the Rankine cycle system, the heat on the utilization side in the absorber (4) The high-pressure liquid heat medium flowing through the exchanger θη is heated by the dilution heat generated when the refrigerant vapor is absorbed by the concentrated solution of the absorbent, and becomes high-pressure vapor, which goes to the expander 081 where it expands and becomes low-pressure. Becomes steam @ At this time, it generates power and drives a load device @ (e.g. a generator) - The low pressure steam that leaves the 1 Sugi A1 machine is cooled through a heat recovery heat exchanger and then condensed. It goes to a container where it is further cooled and condensed into a liquid. Then pump c211
The liquid is pressurized and becomes a high-pressure liquid, passes through a heat recovery heat exchanger, is preheated, is heated in the user-side heat exchanger O'6 in the absorber (4), and becomes high-pressure steam again, and repeats the cycle. O In the conventional absorption heat pump drive Rank/cycle, one heat pump cycle and Rankine cycle are configured completely independently as described above, so each cycle requires a condenser (
2) It had disadvantages, such as having to hold a kanji and having a complicated structure.

The present invention has been made in view of the above points, and it is possible to simplify the configuration by condensing the refrigerant of the absorption heat pump cycle and the heat medium of the Kin cycle in a common condenser. The purpose is to provide an absorption type and one-to-one pump for non-cycles.

An embodiment according to the present invention is shown in FIG. The difference in the PS diagram from the above-mentioned Figure 1 is that after the refrigerant liquid pipe (7) from the condenser (2) exits the refrigerant pump (6), it is divided into refrigerant liquid pipes σ and σ. Connect the liquid pipe IFI to the evaporator (3) and the refrigerant liquid pipe (2) to the heat recovery heat exchanger via the refrigerant pump Q1, and then connect the low pressure steam pipe exiting the expander end. - is connected to the condenser (2) via the heat recovery heat exchanger -, which is the point at which the generator (
The solution in 1) is at a temperature near If 'r1 and a concentration ξ as shown in Figure 2 (■) (however, the pressure is determined by Pl, so Fi cannot be shown accurately on Figure 2 ◎). Condenser (2
) side, the temperature decreases and the 1 ton solution moves toward the darker side of the absorbent layer 1W.

However, since it is heated by the heat source Km machine am.

The temperature If remains near T1, and the refrigerant vapor is released to reach the concentration ξ shown in Figure 2 ■. □ The refrigerant vapor released from the solution is the vapor shown in Figure 2 ■. The refrigerant passes through the refrigerant vapor pipe (6) and is quickly condensed into condensation 4 (2), where it is condensed and liquefied by the condensing heat exchanger to become the liquid in the state shown in Figure 2 (2). Thereafter, the pressure is increased to P1 by the refrigerant pump (6) through the refrigerant liquid pipe (7), and a part of the liquid passes through the refrigerant liquid pipe r1.
1, it goes to the evaporator (3) and is heated by the heat source heat exchanger A4 to become the steam shown in No. 2-0.

This pressure P1. The refrigerant vapor at temperature T1 passes through the steam pipe (8) to the absorber +4) and the concentrated solution shown in Figure 2 (■) in the generator (1) is transferred from the concentrated solution pipe 01 to the solution pump ( 9), the pressure is hurriedly increased to the pressure P□ by the heat recovery heat exchanger a, and the temperature is raised to the state shown in Fig. 2 ■.
8) absorbs refrigerant vapor from
The state shown in Figure 2 (■) of 1 is reached, and the dilute acid liquid tube Il+
, the temperature decreases through the heat recovery heat exchanger I1 and returns to the generator (1) as shown in Figure 2. A portion of the refrigerant liquid indicated by goes to the refrigerant liquid pipe 1, where it is further refrigerant pump a! υYoshi Figure 2■
The pressure is increased to the pressure P shown by (however, the temperature riT
It is in state 1 close to c・'@2 It cannot be displayed accurately on the diagram ◎) After that, the temperature is raised by heat recovery heat exchanger III,
Furthermore, the heat exchanger on the utilization side of the narrow collector (4) (within 1η is ff#
, f'L, the mouth is heated to a temperature T, which is shown in Figure 2 (■). Pressure P3. It becomes steam at a temperature of ET.

This refrigerant vapor goes to the expansion machine O, where it does work while expanding into low-pressure vapor and drives the load equipment.□
The low-pressure steam passes through the heat recovery heat exchanger to lower its temperature, then returns to the condenser (2) through the refrigerant steam pipe and is condensed again. In the example, the refrigerant liquid d(7) that came out of the condensation 64 i2) was distributed to each refrigerant liquid Flζ of 7v and 4 after removing the refrigerant pump 16). Immediately after leaving the refrigerant pump, the refrigerant flows through the refrigerant pump 6) + flow fL, and the refrigerant flowing through the refrigerant pump 6) + flow fL becomes cloudy at the pressure P1.
From P9. : It is also possible to have a configuration in which the voltage is boosted.

In addition, 1 refrigerant liquid pipe/J l = absorption heat +;
An I/L solenoid valve) may be installed.

As described above, according to the present invention, since the heat pump system refrigerant is condensed together with the Rankine cycle system refrigerant in the heat pump system condenser, the 1st cycle system condenser is omitted and the There is a possibility that the equipment will become smaller, more compact, and cheaper.

[Brief explanation of the drawing]

Figure 1 is a system diagram showing a conventional absorption heat pump for heat pumps with long height. Figure 2 is a diagram showing the operating points of an absorption heat pump on a temperature-pressure curve diagram. A system diagram showing one embodiment of the invention, FIG. 4 is a diagram showing main parts of another embodiment of the invention. In the figure, (1) is a generator, (2) is a #f condenser, ( 3
) is the evaporator, (4) is the suction unit, (5) is the refrigerant vapor pipe,
(6) is the refrigerant pump, (7) is the refrigerant liquid pipe, (8) is the refrigerant vapor pipe, (9) is the solution pump, no h g solution pipe, +
+u u fh solution tube, 1I21c heat recovery heat exchange 6・(
1 is the heat exchanger used, α is the expander, (11
is a heat recovery heat exchanger, T2ml is a refrigerant pump (second refrigerant pump), and f241 is an on-off valve. In addition, each IA A and D indicates the same or equivalent part. Indication of the case of the Commissioner of the Japan Patent Office Patent Application No. 56-111180 Name of the invention Absorption type % formula % for Rankine cycle Relationship with the case of the person making the amendment Patent applicant No. 2 Forgery L No. 1

Claims (1)

[Claims] The heat exchanger is thermally coupled to the absorption 6 of the heat pump system, and the refrigerant flowing in the heat sol exchanger is supplied as high-pressure steam to the expander of the Ml heat pump/ki/toge cycle system. An absorption heat pump for a Rankine cycle, characterized in that the air/fuel cycle type refrigerant discharged from the expander is condensed together with the heat pump type refrigerant by the heat pump type condenser. −・