Working medium pair suitable for absorbing type energy storage circulation

A technology of absorption energy storage and working fluid pairing, which is applied in the direction of adsorption machines, energy industry, climate change adaptation, etc., can solve the problems of unsuitable for long-term application, high corrosion of absorption energy storage equipment, etc. condition performance, and the effect of improving energy saving rate

Inactive Publication Date: 2014-03-26
TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In addition, other commonly used working fluid pairs that can be used in absorption energy storage cycles include LiCl / H 2 O, NH 3 / H 2 O and NaOH / H 2 O, etc., but these solutions are highly corrosive to the absorption energy storage equipment, so they are not suitable for long-term application in the absorption energy storage cycle.

Method used

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  • Working medium pair suitable for absorbing type energy storage circulation
  • Working medium pair suitable for absorbing type energy storage circulation
  • Working medium pair suitable for absorbing type energy storage circulation

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Experimental program
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Embodiment

[0011] Table 1 shows the energy storage characteristic parameters of the working fluid pair when the mass fraction is 55% measured experimentally;

[0012] Table 2 is the data of vapor-liquid phase equilibrium of this working fluid pair, measured experimentally, when the mass fraction is 40%;

[0013] Table 3 shows the vapor-liquid phase equilibrium data of the working fluid pair when the mass fraction is 65% measured experimentally.

[0014] Table 1 When the mass fraction is 55%, the energy storage characteristics of the working medium

[0015]

[0016] Table 2 When the mass fraction is 40%, the vapor-liquid phase equilibrium data of the working fluid pair

[0017]

[0018] Table 3 When the mass fraction is 70%, the vapor-liquid phase equilibrium data of the working fluid pair

[0019]

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Abstract

A working medium pair suitable for absorbing type energy storage circulation is composed of a aqueous solution containing lithium bromide, lithium chloride and 1,3-propanediol, and the mass percentage concentration of the solution is 40%-70%. The working medium pair can be applied to absorbing type energy storage circulation with a heat source temperature ranging from 97 DEG C to 137 DEG C. By the adoption of the working medium pair, refrigeration of an absorbing type energy storage system can be achieved, and storage of refrigerants can be achieved. Meanwhile, the working medium pair can be used in absorbing type energy storage circulation for a long time without causing severe corrosion of absorbing type energy storage equipment. The working medium pair can also improve the energy saving rate of a distributed combined cooling heating and power triple co-generation system when used in an absorbing type energy storage unit of the distributed type combined cooling heating and power triple co-generation system.

Description

technical field [0001] The invention relates to a working fluid pair suitable for an absorption energy storage cycle. The proposed working fluid pair is suitable for various forms of absorption energy storage units such as single effect and double effect, and belongs to the technical field of absorption energy storage. Background technique [0002] The absorption energy storage system is applied to the distributed combined cooling, heating and power supply system instead of the absorption refrigeration system, which can make other units in the triple supply system work near the optimal working conditions, thereby improving the energy saving rate of the triple supply system. The absorption energy storage system not only has the refrigeration function of the absorption refrigeration system, but also can store energy and has a high energy storage density. [0003] The working pair of absorption refrigeration systems currently used in industry is an aqueous solution of lithium b...

Claims

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Application Information

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IPC IPC(8): F25B15/06
CPCY02B30/62Y02P80/15Y02A30/27
Inventor 王筱姜曦灼李忞智史琳
Owner TSINGHUA UNIV
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