Two-stage preheating parallel type double-pressure evaporation organic Rankine cycle system
A circulating system and parallel technology, applied in the field of organic Rankine cycle system, can solve the problems of unreasonable system structure design and working medium selection, low power generation performance, large irreversible loss of the system, etc., to improve thermal performance and economic performance. , reducing the demand for waste heat temperature, reducing the effect of irreversible losses
Pending Publication Date: 2019-05-31
JIANGSU UNIV
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Problems solved by technology
But at present, the main problem of the organic Rankine cycle is that the power generation performance of the system is relatively low. This is due to the limitation of the temperature of the medium and low temperature heat source itself, and the other part is that the structural design of the system and the selection of working fluid are not reasonable, so The irreversible loss of the system is large, and the inherent potential of waste heat power generation has not been fully utilized
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[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0018] Such as figure 1 As shown, the present invention proposes a two-stage preheating parallel dual-pressure evaporative organic Rankine cycle system, including a first-stage preheating system, a second-stage preheating system and a condensation system, and the first-stage preheating system Including the working fluid pump A12, the working fluid pump A12 is connected to the steam inlet of the evaporator A1, the steam outlet of the evaporator A1 is connected to the expander A2, the expander A2 is connected to the generator A3, the outlet of the expander A2 is connected to the exhaust steam inlet o...
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The invention discloses a two-stage preheating parallel type double-pressure evaporation organic Rankine cycle system. The system comprises a first stage preheating system, a second stage preheating system and a condensing system, wherein the first stage preheating system is used for preheating a circulating working medium and converting the preheated circulating working medium into electric energy through working of an expansion machine A, the second stage preheating system is used for preheating the circulating working medium and converting the preheated circulating working medium into electric energy through working of an expansion machine B, and the waste steam after working of the first stage preheating system and the second stage preheating system is subjected to mixing, heat exchange and condensing by the condensing system, and then enters the next circulation process. According to the system, the irreversible loss in an organic Rankine cycle can be reduced, and the thermodynamic performance and the economic performance of the cycle are improved.
Description
technical field [0001] The invention belongs to the technical field of an organic Rankine cycle system for recovering low-grade heat, and in particular relates to a two-stage preheating parallel double-pressure evaporation organic Rankine cycle system. Background technique [0002] Energy is an indispensable resource for human progress and social development. Extensive use of fossil energy has not only caused serious environmental pollution, but also caused a lot of waste of resources. Effective recovery of waste heat resources is an important means to improve energy efficiency. According to statistics, 50% of the heat energy used by humans is directly discharged in the form of low-temperature waste heat. If this part of energy can be effectively utilized, it will not only provide important technical support for energy conservation, emission reduction and environmental protection, but also generate certain economic benefits. [0003] At present, some new technologies have...
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IPC IPC(8): F01K11/00F01K23/04F01B23/10F01K25/10
Inventor 王欣冯永强王爽王谦何志霞
Owner JIANGSU UNIV