Cooling, heating and power combined supply system based on double-pressure organic Rankine cycle

A technology of cogeneration of cooling, heating and power, and Rankine cycle, which is applied in the direction of mechanical equipment, steam engine devices, machines/engines, etc., can solve the problems of heat island effect in surrounding areas, discharge a large amount of condensation waste heat, and waste energy, and achieve simple structure and reduce Waste and high heat recovery efficiency

Inactive Publication Date: 2015-11-25
XIANGTAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, this system needs to consume high-grade electric energy, and discharges a large amount of condensation waste heat to the environment during the condensation process, which not only causes energy waste, but also causes serious heat island effect to surrounding areas

Method used

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  • Cooling, heating and power combined supply system based on double-pressure organic Rankine cycle

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Embodiment Construction

[0022] As shown in the accompanying drawings, the present invention shows a combined cooling, heating and power system based on a dual-pressure organic rankine cycle. The system is mainly composed of a dual-pressure organic rankine cycle and a vapor compression refrigeration cycle. Drive the high-pressure expander, and the high-pressure expander drives the compressor of the refrigeration cycle through the transmission device to provide cold energy to the outside; the low-pressure expander drives the generator to output electric energy to the outside; after the low-grade heat is released in the high-temperature regenerator, it will be The water is heated into domestic water and supplied to users. The main components of the system include: low-pressure working medium pump 1, low-temperature regenerator 2, high-pressure working medium pump 3, high-temperature evaporator 4, high-pressure expander 5, low-pressure expander 6, first condenser 7, low-temperature evaporator 8. High tem...

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Abstract

The invention discloses a cooling, heating and power combined supply system based on a double-pressure organic Rankine cycle. The cooling, heating and power combined supply system comprises a low-pressure working medium pump, a low-temperature heat regenerator, a high-pressure working medium pump, a high-temperature evaporator, a high-pressure expander, a low-pressure expander, a first condenser, a low-temperature evaporator, a high-temperature heat regenerator, a generator, a compressor, a second condenser, a throttling valve, a refrigeration evaporator and a transmission device. According to the cooling, heating and power combined supply system, the low-grade heat energy is adopted for supplying drive force, the high-pressure expander is utilized for driving the compressor in the refrigeration cycle, and the cooling capacity is provided through air cooling; the low-pressure expander is utilized for driving the generator to provide electric energy; and the high-temperature heat regenerator further absorbs the energy in a low-grade heat source, and domestic hot water is provided. According to the system, cooling, heating and power combined supply can be achieved, and the utilization efficiency of the low-grade heat energy is improved.

Description

technical field [0001] The invention relates to a cooling, heating and power cogeneration system, in particular to a system for simultaneously producing cooling, heating and power by utilizing low-temperature heat sources or industrial waste heat, and belongs to the technical field of low-temperature recovery and power. Background technique [0002] Low-grade thermal energy generally refers to low-temperature heat sources with a temperature lower than 230°C. There are many types of these thermal energies, including new energy sources such as solar energy and geothermal energy, and various waste (waste) heat. The amount of low-grade heat energy is extremely large, and a large amount of low-temperature waste heat is generated in the production process of steel, cement, petrochemical and other industries, including hot water, low-grade flue gas and steam, etc. These low-temperature waste heat accounts for about 50% of the total industrial waste heat . . However, low-grade the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K23/04
Inventor 王志奇刘斌夏小霞
Owner XIANGTAN UNIV
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