A high temperature heat transfer oil thermal energy conversion system

Abstract

The invention provides a high temperature heat transfer oil thermal energy conversion system comprising a heat transfer oil return line, a heat transfer oil output line, a cooling water output line, acooling water return line, a cooling water output pipe branch, a cooling water return pipe branch, a cold heat transfer oil output line, a cold heat transfer oil return line, an expanded heat transfer oil output line, an expanded heat transfer oil return line, a heating system, a heat exchanger, a three-way proportional valve, an oil storage tank, an expansion oil tank, a central controller, a cooling water tower, a solenoid valve, a filter, a pressure sensor, a temperature sensor, a flow sensor and an overflow pipe. The heat exchanger includes a first heat exchanger, a second heat exchangerand a third heat exchanger. According to the high temperature heat transfer oil thermal energy conversion system, through a technology of cooling low temperature oil by cold water and then cooling high temperature oil by the low temperature oil, the technical problem of how to cool 400 DEG C low temperature heat transfer oil is solved, the flow of the high temperature oil and the low temperature oil is controlled through the three-way proportional valve, and the temperature precision at the high temperature reaches + / -1 DEG C.

Description

technical field [0001] The invention relates to the field of thermal energy conversion, in particular to a high-temperature heat transfer oil thermal energy conversion system. Background technique [0002] At present, there are not many researches on the 400°C high-temperature heat transfer oil heat exchange system in China. The main reason is that the temperature condition of 400°C is relatively special, and there are hidden dangers of high temperature, high pressure and flammability, and the control is complicated. The temperature accuracy and time cannot be effectively controlled during the cooling stage. At present, the form commonly used for cooling high-temperature heat sources is to cool down through compressed air at a temperature between 400 and 300°C, and to cool down through compressed air at a temperature between 300 and 100°C. Water is used for cooling; such a form of cooling takes a long time, the efficiency is very low, and the temperature cannot be controlled...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a heat transfer system for high-temperature heat-conducting oil, which solves the technical difficulty of cooling the high-temperature heat-conducting oil at 400°C through the technology of cooling the low-temperature oil with cold water, and then cooling the high-temperature oil with the low-temperature oil. The flow rate of high temperature oil and low temperature oil is controlled by the proportional valve, and the temperature accuracy at high temperature can reach ±1°C

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