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Non-azeotropic-mixed-refrigerant-based diesel exhaust heat recovery system with combined power-cold supply and compound cycle

A waste heat recovery system, non-azeotropic mixing technology, applied to internal combustion piston engines, combustion engines, machines using waste heat, etc., can solve problems such as difficulty in improving the fuel utilization rate of internal combustion engines, and achieve high compactness, convenient operation adjustment, and enhancement. The effect of the cooling effect

Active Publication Date: 2021-04-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current internal combustion engine design and manufacturing technology is quite mature, and it is increasingly difficult to improve the fuel utilization rate of the internal combustion engine only by improving the structure of the internal combustion engine or improving the combustion in the cylinder of the internal combustion engine

Method used

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  • Non-azeotropic-mixed-refrigerant-based diesel exhaust heat recovery system with combined power-cold supply and compound cycle
  • Non-azeotropic-mixed-refrigerant-based diesel exhaust heat recovery system with combined power-cold supply and compound cycle
  • Non-azeotropic-mixed-refrigerant-based diesel exhaust heat recovery system with combined power-cold supply and compound cycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 and 5 As shown, the internal combustion engine waste heat recovery system based on the non-azeotropic mixed working fluid combined power and cooling cycle includes ORC liquid supply pump 1, ORC steam generator 2, ORC superheater 3, ORC turbine 4, injector 5, Condenser 7, refrigeration evaporator 8, condenser 9, low-pressure liquid supply pump 10, low-pressure preheater 11, steam generator 12, low-pressure superheater 13, steam drum 14, mixer 15, regulating valve, stop valve and throttle valve;

[0034] The high-temperature flue gas of the internal combustion engine passes through the ORC superheater 3, the ORC steam generator 2, and the low-pressure superheater 13 successively, and then discharges heat;

[0035] The hot cooling water of the cylinder liner is discharged through the heat exchange of the steam generator 12 and the heat release of the low-pressure preheater 11 in sequence;

[0036] The liquid mixed working medium in the condenser 9 is se...

Embodiment 2

[0039] Such as figure 2 and 5 As shown, the internal combustion engine waste heat recovery system based on the non-azeotropic mixed working fluid combined power and cooling cycle includes ORC liquid supply pump 1, ORC steam generator 2, ORC superheater 3, ORC turbine 4, injector 5, Condenser 7, refrigeration evaporator 8, condenser 9, low-pressure liquid supply pump 10, low-pressure preheater 11, steam generator 12, low-pressure superheater 13, steam drum 14, mixer 15, regulating valve, stop valve and throttle valve;

[0040] The high-temperature flue gas of the internal combustion engine passes through the ORC superheater 3, the ORC steam generator 2, and the low-pressure superheater 13 successively, and then discharges heat;

[0041] The hot cooling water of the cylinder liner is discharged through the heat exchange of the steam generator 12 and the heat release of the low-pressure preheater 11 in sequence;

[0042] The liquid mixed working medium in the condenser 9 is d...

Embodiment 3

[0045] Such as image 3 and 5 As shown, the internal combustion engine waste heat recovery system based on the non-azeotropic mixed working fluid combined power and cooling cycle includes ORC liquid supply pump 1, ORC steam generator 2, ORC superheater 3, ORC turbine 4, injector 5, Compressor 6, condenser 7, refrigeration evaporator 8, condenser 9, low pressure liquid supply pump 10, low pressure preheater 11, steam generator 12, low pressure superheater 13, steam drum 14, mixer 15, regulating valve , cut-off valve and throttle valve;

[0046] The high-temperature flue gas of the internal combustion engine passes through the ORC superheater 3, the ORC steam generator 2, and the low-pressure superheater 13 successively, and then discharges heat;

[0047] The hot cooling water of the cylinder liner is discharged through the heat exchange of the steam generator 12 and the heat release of the low-pressure preheater 11 in sequence;

[0048] The liquid mixed working medium in the...

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Abstract

The invention relates to a non-azeotropic-mixed-refrigerant-based diesel exhaust heat recovery system with power-cold supply and a compound cycle, and belongs to the technical fields of exhaust heat utilization and energy saving. The non-azeotropic-mixed-refrigerant-based diesel exhaust heat recovery system with combined power-cold supply and the compound cycle comprises an ORC liquid supply pump, an ORC steam generator, an ORC superheater, an ORC turbine, an ejector, a steam condenser, a refrigeration evaporator, a condenser, a low-pressure liquid supply pump, a low-pressure preheater, a steam generator, a low-pressure superheater, a steam manifold, a mixer, an adjusting valve, a stop valve and a throttle valve. According to the non-azeotropic-mixed-refrigerant-based diesel exhaust heat recovery system with combined power-cold supply and the compound cycle, the compound-cycle stepped diesel exhaust heat recovery combined power-cold supply system composed of an organic Rankine cycle (ORC) and an ejection refrigeration cycle (ERC) is proposed starting from how to efficiently use diesel exhaust heat, and by means of the system, combined power-cold supply can be achieved by making full use of the exhaust heat of diesel smoke and jacket cooling water.

Description

technical field [0001] The invention relates to a waste heat recovery system of an internal combustion engine based on a non-azeotropic mixed working fluid power-cooling combined supply cycle, which belongs to the technical field of waste heat utilization and energy saving. Background technique [0002] Internal combustion engines use gasoline or diesel as fuel and are widely used in transportation, agricultural machinery, construction machinery and power generation. They are the main equipment for petroleum resource consumption and greenhouse gas emissions. The current international gasoline and diesel prices continue to rise, which has a serious impact on the development of the national economy. In addition, in recent years, severe smog has broken out in some parts of China, especially in the north, and exhaust emissions from internal combustion engines are one of the main causes of the smog. Therefore, it is imperative to work on energy conservation and emission reduction ...

Claims

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Application Information

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IPC IPC(8): F02G5/04F01K25/06F01P3/02F25B27/02
CPCF02G5/04F01K25/06F01P3/02F25B27/02F02G2260/00F01P2003/021Y02T10/12Y02A30/274
Inventor 王辉涛殷旭东王建军朱道飞徐煜毛芸夏禹辰王钰璇魏云辉陈丹晖申妤婕
Owner KUNMING UNIV OF SCI & TECH
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