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Back pressure type ORC combined heat and power generation system

A technology of combined heat and power generation and back pressure, applied in the direction of combined combustion mitigation, steam engine device, steam application, etc., can solve the problems of low heat source temperature and low cycle heat efficiency, reduce heat loss, have no cold source loss, and realize thermoelectricity The effect of joint production

Pending Publication Date: 2020-12-18
CHINA CHANGJIANG ENERGY CORP GROUP
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Problems solved by technology

[0003] The development of ORC technology makes it possible to utilize low-temperature waste heat, but due to the low temperature of the heat source, the thermal efficiency of the cycle is low, and the largest heat loss is the heat released from the turbine exhaust to the cooling water in the condenser, which is called the loss of the cold source

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  • Back pressure type ORC combined heat and power generation system
  • Back pressure type ORC combined heat and power generation system
  • Back pressure type ORC combined heat and power generation system

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", "one end", "another end", "front", "rear", "middle part" etc. are Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referr...

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Abstract

The invention discloses a back pressure type ORC combined heat and power generation system. The back pressure type ORC combined heat and power generation system comprises a turbine expander, wherein an inlet of the turbine expander is connected with an evaporator; an outlet of the turbine expander is connected with a power generator and a plate heat exchanger; and one end of the plate heat exchanger communicates with a heating system, and the other end of the plate heat exchanger is connected with the evaporator through a working medium pump. According to the back pressure type ORC combined heat and power generation system, the turbine expander is a back pressure type turbine expander, a condenser in a traditional ORC power generation device is omitted, the plate heat exchanger is additionally arranged to heat the heating system for water return, heat losses of a cold source are greatly reduced, and combined heat and power generation is achieved; and meanwhile, no industrial cooling system exists, cooling water consumption, pump and draught fan power consumption and cold source losses are avoided, and the system circulation heat efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of industrial waste heat recovery and clean energy, in particular to a back pressure ORC combined heat and power system. Background technique [0002] Organic Rankine Cycle (ORC) is a technology that uses low-boiling point organic working fluids (such as refrigerants) to complete the phase transition of organic working fluids with a low-temperature heat source to realize Rankine cycle power generation. The liquid organic working medium is heated by low-temperature waste heat in the evaporator (sometimes called a waste heat exchanger), producing high-temperature and high-pressure gas, which is expanded by an expander to drive a generator to generate electricity. It is cooled into a liquid in the medium, and is sent back to the evaporator by the refrigerant pump to complete a cycle. [0003] The development of ORC technology has made it possible to utilize low-temperature waste heat. However, due to the low t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/10F01K7/16F01K13/00F01K17/02F01D15/10
CPCF01K25/10F01K7/16F01K13/006F01K13/003F01K17/02F01D15/10Y02E20/14
Inventor 林红良
Owner CHINA CHANGJIANG ENERGY CORP GROUP
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