Engine waste heat recovery system based on organic Rankine cycle

A technology of engine waste heat and Rankine cycle, which is applied in the direction of machines/engines, engine components, combustion engines, etc., can solve problems such as performance matching and system control difficulties, energy loss, and system complexity, so as to shorten the return on investment cycle and recover energy The effect of high height and compact structure arrangement

Inactive Publication Date: 2014-11-26
ZHEJIANG YINLUN MACHINERY
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AI Technical Summary

Problems solved by technology

The system of this invention is relatively complicated. The jacket water and exhaust gas heat the preheater and evaporator respectively, which is difficult in terms of performance matching and system control, and part of the energy will be lost after the exhaust gas passes through the SCR.

Method used

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  • Engine waste heat recovery system based on organic Rankine cycle

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Embodiment Construction

[0015] Referring to the accompanying drawings, an engine waste heat recovery system based on an organic Rankine cycle of the present invention includes an engine exhaust circuit, an engine jacket water circuit, a refrigerant circuit and an external cooling water circuit.

[0016] In the engine exhaust circuit, the engine exhaust gas 13 first passes through the exhaust gas heat exchanger 9 before being discharged into the environment, and transfers heat to the jacket water 12, thereby realizing recovery of exhaust gas heat. In the exhaust gas heat exchanger 9 , the engine exhaust gas 13 and the jacket water 12 are arranged in parallel flow. In actual operation, in order to meet the environmental requirements and the reliable use of the exhaust gas heat exchanger, the temperature of the flue gas from the exhaust gas heat exchanger should not be too low, generally not lower than 140°C.

[0017] In the engine liner water circuit, the liner water 12 enters the engine liner to absor...

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Abstract

The invention discloses an engine waste heat recovery system based on the organic Rankine cycle. The engine waste heat recovery system based on the organic Rankine cycle comprises an engine tail gas loop, an engine cylinder sleeve water loop, a refrigerant loop and an external cooling water loop. Through the engine waste heat recovery system, waste heat of an engine is fully recovered, much energy is recovered, the recovery efficiency is higher, and the whole system is more stable in operation and more compact in structural arrangement. The engine waste heat recovery system is mainly characterized by comprising a heat source recovery system with engine tail gas and cylinder sleeve water integrated, and a refrigerant ORC system with an evaporator, a condenser, an expander and a refrigerant pump as the main components. By effectively controlling all the components of the system, waste heat of the engine can be recycled, and thus electricity generated by consuming unit fuel oil by the engine can be increased, and the cycle of return on investment of the engine is shortened.

Description

technical field [0001] The present invention relates to an engine waste heat recovery and utilization system, in particular to an organic Rankine cycle engine waste heat recovery and utilization system, specifically a system device based on organic Rankine cycle engine waste heat recovery and utilization, using refrigerant (such as R245fa) from the engine The exhaust gas and the water in the cylinder jacket absorb heat, and output work through the four stages of the Rankine cycle to realize energy recovery and reuse. Background technique [0002] With the increasingly severe energy shortage, the energy saving of engines has attracted people's attention. Using the ORC system to recover the waste heat of the engine is not only easy to implement but also has high heat recovery efficiency. The recyclable heat sources of the engine mainly include the heat of the cylinder jacket water and the heat of high-temperature exhaust gas discharged to the environment. The temperature of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02G5/04F01K25/10
CPCY02T10/12
Inventor 董军启苏林陈能舜王建长张荣友王斌
Owner ZHEJIANG YINLUN MACHINERY
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