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Permeation boosting heat-power conversion circulating device

A circulation device and thermal power conversion technology, which is applied in steam engine devices, energy-saving heating/cooling, lighting and heating equipment, etc., can solve the problems of high technical difficulty, low efficiency, easy cavitation and unit power cost, etc., so as to avoid technical difficulty big effect

Active Publication Date: 2015-03-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the rapid development of the current semi-permeable membrane technology and the problems of the current ORC working fluid pump such as high technical difficulty, low efficiency, easy cavitation and high unit power cost, the present invention proposes an osmotic booster heat conversion cycle device

Method used

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  • Permeation boosting heat-power conversion circulating device
  • Permeation boosting heat-power conversion circulating device
  • Permeation boosting heat-power conversion circulating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see figure 1 The working medium outlet of the expander 1 is connected to the working medium inlet of the condenser 2 through a pipeline, the working medium outlet of the condenser 2 is connected to one surface of the semi-permeable membrane module 3, and the other surface of the semi-permeable membrane module 3 is connected to the generator 4 The working medium inlet and the working medium outlet of the generator 4 are connected to the inlet of the expander 1 through pipes, the condenser 2 has a built-in cooling coil 5, and the generator 4 has a built-in heating coil 6;

[0035] The circulating working fluid is ammonia (NH 3 ), the solution is ammonia-sodium bisulfate (NH 3 -NaSCN) solution, the solvent of the solution is ammonia (NH 3 ), the solutes are sodium bisulfate (NaSCN), ammonia (NH 3 ) is the circulating working fluid. The thermal fluid is heat transfer oil;

[0036] The temperature of the thermal fluid inlet 61 is 120°C and the temperature of the thermal...

Embodiment 2

[0044] The structure of the device is the same as in Embodiment 1.

[0045] The circulating working fluid is ammonia (NH 3 ), the solution is ammonia-sodium bisulfate (NH 3 -NaSCN) solution, the solvent of the solution is ammonia (NH 3 ), the solutes are sodium bisulfate (NaSCN), ammonia (NH 3 ) is the circulating working fluid. The thermal fluid is heat transfer oil;

[0046] The temperature of the thermal fluid inlet 61 is 140°C and the temperature of the thermal fluid outlet 62 is 120°C;

[0047] The temperature of the cooling water inlet 51 is 20°C, and the temperature of the cooling water outlet 52 is 30°C;

[0048] Generator 4 surface solution temperature is 120°C, NH 3 The mass fraction of is 50% (corresponding to 50% solute concentration);

[0049] At the junction of generator 4 and semi-permeable membrane module 3, the solution temperature is 27°C, NH 3 The mass fraction of is 60% (corresponding to 40% solute concentration). According to literature [5], at th...

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Abstract

The invention relates to a permeation boosting heat-power conversion circulating device. According to the permeation boosting heat- power conversion circulating device, a semipermeable membrane is used for replacing a traditional organic Rankine cycle pump to conduct boosting on working media. A working medium outlet of an expander is communicated with a working medium inlet of a condenser through a pipeline, a working medium outlet of the condenser is communicated with one side of the semipermeable membrane component, the other side of the semipermeable membrane component is communicated with a working medium inlet of a generator, a working medium outlet of the generator is communicated with an inlet of the expander through a pipeline, a cooling coil is arranged in the condenser, and a heating coil is arranged in the generator. According to the permeation boosting heat-power conversion circulating device, the circulating working media can be ammonia or Freon, a solution in the generator can be ammonia-lithium nitrate, or ammonia-sodium bisulfate, or monochlorodifluoromethane-xylene, or monochlorodifluoromethane-trimethylbenzene, or monochlorodifluoromethane-N or N-dimethylacetamide. The bore diameter of the semipermeable membrane can be adjusted according to the components of the solution, and the components and the concentration of the solution can be adjusted according to different temperature of a heat source and a cold source.

Description

technical field [0001] The invention belongs to the technical field of engineering thermophysics and power engineering, in particular to a novel power cycle device in engineering thermophysics and power engineering. Background technique [0002] The Organic Rankine Cycle (ORC) is currently one of the most promising medium and low temperature heat utilization technologies. In a traditional ORC system, a pump is an essential part to realize pressurization of working fluid. Different from water vapor Rankine cycle pumps, working fluid pumps will have a great impact on ORC systems, especially small systems. The main reason is that small organic working fluid pumps have disadvantages such as high technical difficulty, low efficiency, easy cavitation, and high cost. [0003] Therefore, solving the technical problems related to working fluid pumps is of great significance for improving the efficiency and application potential of small ORCs. The invention is based on the semi-perm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K25/10F25B15/04
CPCY02A30/27Y02B30/62
Inventor 李晶季杰裴刚
Owner UNIV OF SCI & TECH OF CHINA
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