Rankine cycle system with phase change energy storage heat exchanger

A phase-change energy storage and circulation system technology, applied in the field of Rankine cycle system, can solve the problems of large heat transfer temperature difference and large system exergy loss, and achieve the effect of small heat transfer temperature difference and reduced exergy loss

Active Publication Date: 2017-05-24
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The existing double-tank and single-tank heat storage systems are all conventional sensible heat storage technologies. During the phase change process of the working fluid, the temperature o

Method used

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  • Rankine cycle system with phase change energy storage heat exchanger
  • Rankine cycle system with phase change energy storage heat exchanger
  • Rankine cycle system with phase change energy storage heat exchanger

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[0030] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] In order to thoroughly understand the embodiments of the present invention, a detailed structure will be proposed in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail as follows. However, in addition to these detailed descriptions, the present invention may also have other embodiments.

[0032] figure 1 It is a diagram of a traditional Rankine cycle system. The Rankine cycle system provided in this embodiment adds a phase change energy storage heat exchanger 6b and a preheating heat exchanger 6a to the traditional Rankine cycle system, and its structure is as follows figure 2 Shown. The Rankine cycle system includes a superheat ...

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Abstract

The invention provides a Rankine cycle system with a phase change energy storage heat exchanger. The Rankine cycle system comprises an overheating heat exchanger, heat-into-power conversion equipment, a condensation heat exchanger and a pump which are sequentially connected in series. The heat-into-power conversion equipment is connected with an electric generator. The Rankine cycle system further comprises the phase change energy storage heat exchanger and a preheating heat exchanger. One end of the phase change energy storage heat exchanger is connected with one end of the preheating heat exchanger, and the other end of the phase change energy storage heat exchanger is connected with the overheating heat exchanger. The other end of the preheating heat exchanger is connected with the pump. According to the Rankine cycle system provided by the invention, the phase change energy storage heat exchanger is combined with an existing Rankine cycle technology, the small heat transfer temperature difference between a working medium at the evaporation stage and a heat-transfer medium in cycle is guaranteed, the heat transfer temperature difference is kept unchanged, and the exergy loss of the system is reduced.

Description

technical field [0001] The invention relates to a Rankine cycle system, in particular to a Rankine cycle system with a phase change energy storage heat exchanger, belonging to the technical field of energy and power. Background technique [0002] The Rankine cycle is a thermodynamic cycle that converts heat energy into work. The Rankine cycle absorbs heat from the outside, and heats its closed-loop working fluid to do work. The Rankine cycle has the following four processes: [0003] 1. The working medium is compressed by the pump, and the liquid will rise from low pressure to high pressure, becoming high pressure liquid; [0004] 2. The high-pressure liquid is heated, and under constant pressure, the high-pressure liquid absorbs the external heat source and becomes saturated steam or superheated steam; [0005] 3. After the steam expands, it will drive the turbine to generate electricity, so the temperature and pressure of the steam will decrease and become wet steam; ...

Claims

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Application Information

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IPC IPC(8): F01K3/18F03G6/06
CPCY02E10/46
Inventor 杨士慧邹景煌徐桂芝赵波金翼王乐宋洁宋鹏翔杨岑玉沈国清
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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