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Kalina cycle and Rankine cycle coupled medium and low temperature waste heat utilizing system

A Karina cycle and Rankine cycle technology, applied in geothermal energy systems, geothermal energy power generation, steam engine installations, etc., can solve the problems of high construction costs and large irreversible losses, avoid high construction costs, reduce emission temperature, and reduce cost effect

Pending Publication Date: 2018-01-30
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the construction cost of the organic Rankine power generation cycle is slightly higher, and the characteristics of the constant temperature evaporation of the working medium of the organic Rankine power generation cycle make the irreversible loss still relatively large under specific working medium conditions

Method used

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  • Kalina cycle and Rankine cycle coupled medium and low temperature waste heat utilizing system

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Embodiment

[0013] The following takes medium and low temperature geothermal utilization as an example and combines figure 1 The present invention is further described.

[0014] As shown in the figure, the medium and low temperature waste heat utilization system coupled with Karina cycle and Rankine cycle includes: generator 1, separator 2, steam turbine 3, absorber 4, first condenser 5, preheater 6, evaporator 7 , the first working fluid pump 8, the second working fluid pump 9, the pressure reducing valve 10, the second condenser 11;

[0015] The generator includes: generator heat source inlet 1-1, generator heat source outlet 1-2, generator ammonia water inlet 1-3, generator ammonia water outlet 1-4; the separator includes: separator ammonia water inlet 2- 1, separator ammonia gas outlet 2-2, separator dilute solution outlet 2-3; the steam turbine includes: first cycle ammonia gas inlet 3-2, second cycle ammonia gas inlet 3-1, ammonia gas outlet 3- 3; the absorber includes: the first ...

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Abstract

The invention relates to a device converting heat energy into mechanical energy, in particular to a Kalina cycle and Rankine cycle coupled medium and low temperature waste heat utilizing system. The Kalina cycle and Rankine cycle coupled medium and low temperature waste heat utilizing system comprises a generator, a separator, a steam turbine, an absorber, a first condenser, a preheater, an evaporator, a first working medium pump, a second working medium pump, a pressure reducing valve and a second condenser. Compared with the prior art, the Kalina cycle and Rankine cycle coupled medium and low temperature waste heat utilizing system has the advantages that the Kalina cycle and the Rankine cycle are coupled, and the cost of the system is reduced; the Rankine cycle secondarily absorbs wasteheat and the heat of a dilute solution of the Kalina cycle generator, the discharging temperature of waste heat is reduced while waste heat utilization of the Kalina cycle is ensured, and the energyutilization efficiency of the system is improved.

Description

Technical field: [0001] The invention relates to a device for converting heat energy into mechanical energy, and further relates to a medium-low temperature waste heat utilization system coupled with a Kalina cycle and a Rankine cycle. Background technique: [0002] At present, energy saving and emission reduction is the key object of national support for development, and medium and low temperature power generation technology is one of the research hotspots and the direction of industrialization promotion. For medium and low temperature geothermal energy, due to its low energy grade and the difficulty in improving energy utilization efficiency, how to make more effective use of medium and low temperature geothermal resources has become the main research direction. Medium and low temperature geothermal resources are mainly used in power generation, industrial processing, heating, greenhouse and medical treatment, among which medium and low temperature geothermal is the most w...

Claims

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Application Information

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IPC IPC(8): F01K25/10F03G4/00
CPCY02E10/10
Inventor 张伟张家琪任雨郭大伟
Owner TIANJIN UNIV
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