Organic Rankine cycle power generation system utilizing underground water source

Abstract

The invention relates to an organic Rankine cycle power generation system utilizing an underground water source. The system comprises an evaporator, a gas-liquid separator, an expander, a generator, aheat regenerator, a liquid reservoir, a working medium pump and a condensation treatment device, wherein the condensation treatment device comprises a condenser, a water pump and water body purification equipment; the water pump, the water body purification equipment and the condenser are sequentially connected through a circulating pipeline; the evaporator, the gas-liquid separator, the expander, the heat regenerator, the condensation treatment device, the liquid reservoir and the working medium pump are sequentially connected through pipelines; an output end of the working medium pump, an input end of the evaporator and the heat regenerator are connected through pipelines; and the generator is connected with the expander. According to the system, the novel condensation treatment deviceis adopted, so that the indexes of system energy consumption, power generation efficiency, water consumption and the like are obviously reduced, the utilization rate of the underground water source isfurther increased, and the economic value of the underground water source is improved.

Description

technical field [0001] The invention relates to the technical field of low-temperature power generation, in particular to an organic Rankine cycle power generation system using underground water sources. Background technique [0002] Energy shortage and environmental pollution have developed into worldwide problems. Energy conservation, emission reduction, reduction of energy consumption, and improvement of comprehensive utilization of energy are the fundamental ways to solve energy problems. [0003] The organic Rankine cycle is a Rankine cycle in which low-boiling point organic matter is used as the working medium. In the prior art, the circulation system uses a cooling tower to cool the working medium. However, the cooling water temperature is affected by the wet bulb temperature of the air. Generally, the cooling tower wet If the ball approach temperature is greater than 4°C, the temperature of the cooling water entering the condenser is at least 4°C higher than the wet ...

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Problems solved by technology

In addition, the traditional organic Rankine cycle device has a large amount of cooling water circulation, and the cooling tower is placed far away from the condenser due to on-site reasons, the head of the cooling water pump is high, and the power consumption of the cooling water pump is large. At the same time, the water consumption rate is about the cooling water circulation 1.5% of

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