Organic Rankine circulation system with working medium charge volume being dynamically adjustable

A circulation system and charge technology, applied in the field of organic Rankine cycle system, can solve problems such as imperfect means and strategies, difficult implementation cost of working medium, etc., and achieve the effect of dynamic adjustment of working medium charge and discharge

Inactive Publication Date: 2017-08-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, since the working fluid circuit of the ORC system is a closed cycle, the online replenishment and extraction of working fluid is often difficult to implement and the cost is high, so the means and strategies for dynamically adjusting the filling amount of working fluid are very imperfect

Method used

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  • Organic Rankine circulation system with working medium charge volume being dynamically adjustable

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Embodiment 1

[0021] Such as figure 1 The organic Rankine cycle (ORC) system 10 shown as a dynamically adjustable working fluid charge includes an evaporator 11, an expander 12, a condenser 13, a working medium pump 14, and a high-pressure working medium pipeline 21 , 22, a closed-loop organic working medium circuit formed by low-pressure working medium pipelines 23 and 24. The liquid working medium exits the working medium pump 14, passes through the high-pressure working medium pipeline 21, and enters the evaporator 11 to fully absorb the heat of the low-temperature heat source to be vaporized. The high-temperature and high-pressure working medium steam enters the expander 12 through the high-pressure working medium pipeline 22 to expand and output mechanical work. The expanded working fluid then enters the condenser 13 through the high-pressure working medium pipeline 23 to condense, and returns to the working medium pump 14 through the high-pressure working medium pipeline 24 to comple...

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Abstract

The invention relates to an organic Rankine circulation system with the working medium charge volume being dynamically adjustable. The organic Rankine circulation system comprises a working medium pump, an evaporator, an expansion machine and a condenser which are mounted in series and form a closed working medium loop through working medium pipelines. The organic Rankine circulation system is characterized in that a working medium storage tank is further connected into a working medium pipeline between the working medium pump and the evaporator and internally provided with a variable-size water bag which is further sequentially connected with a water pump and a water storage tank through pipelines. Compared with the prior art, working medium real-time charging and discharging can be achieved by adjusting the pressure difference between corresponding pipe sections in the working medium storage tank and the organic Rankine circulation system, adjustment is convenient and easy to achieve, cost is low, and the charging and discharging volumes are dynamically adjustable.

Description

technical field [0001] The invention relates to a power cycle using low-grade waste heat as a heat source, in particular to an organic Rankine cycle system with dynamically adjustable working fluid charge. Background technique [0002] With the growth of energy demand and the improvement of environmental protection requirements, more and more attention has been paid to the utilization of medium and low temperature heat sources, especially industrial waste heat. Industrial waste heat is widely derived from various industrial furnaces, thermal power devices, thermal energy utilization equipment and various production processes that generate reaction heat. According to the principle of temperature matching and cascade utilization of heat energy, there are a large number of medium and low temperature waste heat in some high-energy-consuming industries that have not been fully utilized, and the corresponding utilization technology is not yet mature enough, which urgently needs to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K13/02F01K25/08
CPCF01K13/02F01K25/08
Inventor 刘柳辰朱彤潘煜马嘉诚
Owner TONGJI UNIV
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