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Method for detecting and extracting a gaseous fluid contained in a closed circuit operating according to the Rankine cycle and device using the method

A technology of gaseous fluid and Rankine cycle, which is applied to steam engine devices, steam traps, machines/engines, etc., and can solve problems such as complex closed loops

Active Publication Date: 2021-05-25
INST FR DU PETROLE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] Such operation involves the major disadvantage of complicating the closed loop directing the air towards the expander

Method used

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  • Method for detecting and extracting a gaseous fluid contained in a closed circuit operating according to the Rankine cycle and device using the method
  • Method for detecting and extracting a gaseous fluid contained in a closed circuit operating according to the Rankine cycle and device using the method

Examples

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Embodiment Construction

[0033] figure 1 A Rankine cycle closed circuit 10 is shown, advantageously of the ORC (Organic Rankine Cycle) type and using organic fluids such as butane, ethanol, hydrofluorocarbons, carbon dioxide, or mixtures of organic fluids.

[0034] It should be understood that the closed loop can be operated with non-organic fluids such as ammonia or water.

[0035] This circuit comprises a circulating compression pump 12 for the working fluid, referred to in the following description as a circulating pump, which has an inlet 14 for a liquid working fluid and an outlet 16 for also a liquid working fluid, but at high pressure The lower liquid working fluid is compressed. The pump is advantageously turned by any means such as an electric motor (not shown).

[0036] The circuit also includes a heat exchanger 18 called an evaporator, which is traversed by the compressed working fluid between an inlet 20 for this liquid fluid and an outlet 22 from which the fluid flows from said outlet 2...

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Abstract

The invention relates to a method for detecting and pumping a gaseous fluid contained in a closed circuit (10) operating in the Rankine cycle, said circuit comprising a plurality of components which in turn are a circulating compressor pump for the working fluid (12), heat exchanger (18) associated with heat source (24), expander (30), cooling exchanger (40), working fluid tank (46) and circulation pipes (50, 52, 54, 56, 58, 60). The invention includes: - measuring the temperature of the working fluid (T 实际 ) and pressure (P 实际 ), and – the pressure once measured (P 实际 ) exceeds the threshold (P 饱和液体 ), the device (62) for pumping the gaseous fluid is activated in order to discharge the gaseous fluid from the circuit.

Description

technical field [0001] The invention relates to a method for detecting and extracting a gaseous fluid contained in a closed circuit operating on a Rankine cycle, and to a device using the method. [0002] As widely known, the Rankine cycle is a thermodynamic cycle in which heat from an external heat source is transferred to a closed loop containing a working fluid. [0003] The cycle is generally broken down into a phase in which a working fluid with a low freezing point is used isentropically compressed, followed by a phase in which the compressed fluid is heated and vaporized in contact with a heat source. This steam is then expanded isentropically in an expander in another stage, and then in a final stage, the expanded steam is cooled and condensed in contact with a heat sink. [0004] To perform these various stages, the closed loop includes a pump for compressing the working fluid into a liquid state and circulating it in the closed loop, a heat exchanger (or evaporator)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K23/06F01K13/00F16T1/12
CPCF01K13/003F01K23/065F16T1/12
Inventor D·塞拉诺J·泰尔弗A·波徹尔A·雷洛克斯
Owner INST FR DU PETROLE