JPS63134805A - Absorbing and condensing device of working fluid at turbine exit - Google Patents

Abstract

PURPOSE:To miniaturize a condenser as a result of effectively absorbing and condensing the working fluid gas constituent by an absorbing medium by providing a heat exchanger to cool the fluid separated by a gas-fluid separator by means of a low temperature heat source. CONSTITUTION:After the heat of the working fluid 21 at the exit of a turbine 1 is recovered with an exhaust heat reclaimer 2, the working fluid 21 is effectively absorbed and condensed through a condenser 3 into a low concentrated aqueous ammonia which is an absorbing medium sufficiently cooled in advance through a heat exchanger 6. The absorbing medium condensed by the condenser 3 is pressurized with a pump 4 and its temperature is raised with the exhaust heat reclaimer 2 to become a mixture of gas and fluid. The mixture of gas and fluid runs into a gas-fluid separator 5 where it is separated into a fluid phase, implying the absorbing medium 22, and a gaseous phase. The high concentrated ammonia vapor, which is in the gaseous phase, is mixed with some of the condensed fluid at the exit of the condenser 3 to make the working fluid 21. This working fluid 21 is cooled and condensed through the condenser 7 and recirculated by a fluid supplying pump 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is utilized in the technical field of working fluid cooling applied to the process of absorbing and condensing the turbine working fluid of a turbine product into an absorption medium.

Conventional Technology As shown in FIG. 2, the conventional technology is such that the turbine working fluid absorption medium 22 separated by a gas-liquid separator is mixed with the working fluid 21 in a condenser 3 and cooled without being cooled by a cold heat source. Ru.

Problems to be Solved by the Invention In the conventional method described above, the working fluid 21 and the working fluid absorbing medium 22 are mixed in the condenser 3 and are in a gas-liquid two-phase flow state, and this is cooled by a cold heat source to remove the working fluid. The gas components in 21 are absorbed and condensed.

The absorption of the gas components of the working fluid 21 into the liquid-phase absorption medium 22 progresses more quickly when the liquid-phase absorption medium 22 is supercooled and the degree of supercooling is greater. In technology, in the condenser 3 port, the working fluid 2
1 is hardly absorbed, and the absorption medium 22 is cooled, but in this case, the heat transfer efficiency is poorer than in liquid-liquid heat exchange, and the condenser 3 becomes large.

Means for Solving the Problems The present invention takes the following measures in order to solve the above-mentioned problems. In other words, in a system that uses the liquid separated by a gas-liquid separator as a medium that easily absorbs working fluid, the turbine outlet working fluid is absorption·
A condensing system.

According to the means of the present invention described above, the working fluid absorption medium is efficiently cooled in the heat exchanger 6 before entering the condenser 3 by liquid-liquid heat exchange with a cold heat source. This absorption medium 22, which has been sufficiently supercooled in advance, is introduced into the condenser 3, and the working fluid gas components are absorbed and condensed therein. In this way, the working fluid gas components are absorbed and condensed immediately by the capacitor 3, the capacitor 3 becomes smaller, and the overall equipment cost is immediately reduced by one. In this case, the amount of heat radiated by the heat exchanger and the condenser to the cold heat source side is the same as the amount of heat radiated by the condenser in the conventional method.

Embodiment Next, an example in which the present invention is applied to the condensation process of the outlet working fluid of a turbine 1 using aqueous ammonia as the working fluid is shown in FIG. 1 (the present invention is within the dashed line frame) and will be described.

After the working fluid 21 at the turbine outlet is heat-recovered in the exhaust heat recovery device 2, it is efficiently absorbed and condensed in the condenser 3 into low-concentration ammonia water, which is an absorption medium that has been sufficiently cooled in advance in the heat exchanger 6. .

The absorption medium (medium concentration ammonia water) condensed in the condenser 3 is pressurized by the pump 4 and heated in the exhaust heat recovery device 2 to become a gas-liquid mixture, which enters the gas-liquid separator 5 to form a gas phase ( It is separated into a liquid phase (high concentration ammonia water vapor) and a liquid phase (low concentration ammonia water) which is the absorption medium 22. The highly concentrated ammonia water vapor is mixed with a portion of the condensate at the outlet of the condenser 3 to form the working fluid 21. The working fluid 21 is cooled and condensed in the condenser 7 and recirculated by the liquid supply pump 8.

Effects of the Invention According to the working fluid absorption/condensation device of the present invention, the working fluid gas components of the condenser are efficiently absorbed and condensed into the absorption medium, and the condenser can be downsized.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing the configuration of the absorption/condensation device of the present invention;
FIG. 2 is a system diagram of a prior art absorption/condensation device. 7. Condenser, 8. Liquid supply pump, 9. Expansion valve, lO
... Generator, 11 ... Cooling water circulation pump, 21 (other 1
Figure 1

Claims (1)

[Claims] A turbine that generates power by expanding the working fluid, a condenser that mixes the working fluid after power recovery with a medium that easily absorbs the working fluid, cools it, absorbs and condenses it, and boosts the pressure of the condensed fluid in the condenser. A pump, an exhaust heat recovery device 2 that heats the pump, and a gas-liquid separator that separates the heated fluid into gas and liquid in order to create a working fluid with a pressure higher than the turbine outlet pressure from the heated fluid. A turbine outlet working fluid absorption/condensation system that uses a liquid separated by a gas-liquid separator as a medium that easily absorbs the working fluid, which is equipped with a heat exchanger that cools the liquid separated by a gas-liquid separator using a cold heat source.