Organic working medium thermal power generation circulating system boosted by aid of gravity

Abstract

The invention relates to an organic working medium thermal power generation circulating system boosted by the aid of gravity. A working medium outlet of an expansion machine of the system is communicated with a working medium inlet of a condenser via a pipeline, a working medium outlet of the condenser is communicated with an inlet of a liquid storage tank via a pipeline, an outlet of the liquid storage tank is communicated with a working medium inlet of an evaporator via a pipeline, a working medium outlet of the evaporator is communicated with an inlet of a gas storage tank via a pipeline, and an outlet of the gas storage tank is communicated with an inlet of the expansion machine via a pipeline; working medium is an organic matter; the locations of the condenser and the liquid storage tank are higher than the location of the evaporator by 5 meters to 200 meters in a gravity field; and average working temperature of the evaporator is higher than that of the condenser by 30 DEG C to 25 DEG C. A low working condition running characteristic of the organic working medium is combined with the gravity field, required evaporation pressure is provided for the organic working medium by the aid of the gravity, a pump is omitted in total circulation, and the structure is simple; and the organic working medium thermal power generation circulating system realizes simple and high-efficiency conversion between medium and low temperature grade thermal energy and mechanical energy, and has quite high technical feasibility and application prospect.

Description

Technical field [0001] The invention involves new power cycle fields in engineering thermal physics and power engineering. Background technique [0002] Organic Rankine Cycle (ORC) is one of the most applied prospects with low and medium -thermal energy utilization technology.ORC has a working principle similar to the traditional water steam Ronken cycle: the working quality passes through the pump pressure, and then enters the evaporator to absorb heat and vaporizes. The high -temperature and high -pressure gases enter the swelling machine to work.Re -flow into the pump and complete a cycle.However, compared with the water steam Ronken cycle, ORC has the following three main advantages: 1) When the dry work quality is used, the ORC expansor entrance does not need to be overheated, which effectively improves the average heat absorption temperature and thermal power of the working quality and heat work.Conversion efficiency.Water is a typical wet quality. In order to avoid droplet...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the current ORC working fluid pump such as high technical difficulty, low efficiency, easy cavitation and high unit power cost, the present invention proposes an organic working fluid thermal power generation cycle system using gravity pressurization

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