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Fused salt phase change heat storage device applied to solar air conditioner

A phase change heat storage, molten salt technology, applied in heat storage equipment, energy storage, indirect heat exchangers, etc., to achieve the effect of sufficient heat exchange process, good thermal conductivity, and large latent heat of phase change

Inactive Publication Date: 2011-11-23
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, research on medium-temperature solar air-conditioning heat storage devices needs to be further developed.

Method used

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  • Fused salt phase change heat storage device applied to solar air conditioner
  • Fused salt phase change heat storage device applied to solar air conditioner
  • Fused salt phase change heat storage device applied to solar air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] like figure 1 , figure 2 As shown in the figure, a molten salt phase change heat storage device applied to a solar air conditioner, which includes a heat storage chamber box 1, a heat storage material containing pipeline 2, a heat storage material, a thermal insulation layer 6 and a heat transfer oil; the heat storage chamber box 1 is the heat storage space 5 (except for the oil inlet 3 and the oil outlet 4, which is closed), and the heat storage chamber box 1 is provided with an oil inlet 3 and an oil outlet 4 (the oil inlet 3 is located at the The bottom of one side of the heat storage chamber box body 1, the oil outlet 4 is located at the top of the other side of the heat storage chamber box body 1), the oil inlet port 3 and the oil outlet port 4 are respectively connected with the heat storage space 5, and the heat storage chamber The heat storage space 5 of the box body 1 is provided with 2-200 heat storage material containing pipes 2 (the specific number is det...

Embodiment 2

[0031]Basically the same as Example 1, the difference is:

[0032] NaNO 3 / KaNO 3 The mass percentage of the raw material composition of graphite composite phase change heat storage material is: industrial NaNO 3 42.5%, industrial KaNO 3 42.5%, expanded graphite 15%. The specification of the stainless steel pipe is Φ133×3.

[0033] After the raw materials are evenly mixed with the ingredients, they are pressed into shape. The density of heat storage material is 1.80g / cm 3 , as measured by a differential scanning calorimeter (DSC), the latent heat per unit mass of the heat storage material is 111J / g, and the phase transition temperature is 210-220°C. The thermal conductivity of the heat storage material is 5.3 W / mK. After more than 200 cycle tests, the phase transition temperature basically remains unchanged, and the phase transition latent heat decline rate is only about 3%. Simulation calculations show that when the temperature of the heating oil is 280°C and the char...

Embodiment 3

[0035] Basically the same as Example 1, the difference is:

[0036] NaNO 3 / KaNO 3 The mass percentage of the raw material composition of graphite composite phase change heat storage material is: industrial NaNO 3 45%, Industrial KaNO 3 45%, expanded graphite 10%. The specification of the stainless steel pipe is Φ127×3.

[0037] After the raw materials are evenly mixed with the ingredients, they are pressed into shape. The density of heat storage material is 1.85g / cm 3 , as measured by a differential scanning calorimeter (DSC), the latent heat per unit mass of the heat storage material is 115J / g, and the phase transition temperature is 210-220°C. The thermal conductivity of the heat storage material is 3.2W / mK. After more than 200 cycle tests, the phase transition temperature basically remains unchanged, and the phase transition latent heat decline rate is only about 3%. The simulation calculations show that when the temperature of the heating oil is 280°C and the char...

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Abstract

The invention relates to a fused salt phase change heat storage device applied to a solar air conditioner. The fused salt phase change heat storage device applied to the solar air conditioner is characterized by comprising a heat storage chamber box, heat storage material accommodating pipelines, a heat storage material and heat conducting oil; a heat storage space is formed in the heat storage chamber box, the heat storage chamber box is provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet are communicated with the heat storage space respectively, 2 to 200 heat storage material accommodating pipelines are arranged in the heat storage space of the heat storage chamber box, the heat storage material accommodating pipelines are fixed with the heat storage chamber box, and the heat storage material is filled in the heat storage material accommodating pipelines; and a heat transfer medium between the outer walls of the heat storage material accommodating pipelines and the inner wall of the heat storage chamber box is the heat conducting oil. The fused salt phase change heat storage device has the characteristics of simple structure, safety, reliability and high heat exchange efficiency.

Description

technical field [0001] The invention relates to a molten salt phase-change heat storage device applied to a solar air conditioner. Background technique [0002] Solar air conditioning refers to a method that converts solar radiation into cooling or dehumidification to improve indoor temperature and humidity. At present, countries around the world are stepping up Solar Air Conditioning Technology Research. According to the survey, countries and regions that have established or are building solar air conditioning systems include Italy, Spain , German country, nice country, Japan, South Korea ,Singapore, Hongkong Wait. This is because the air-conditioning energy consumption in developed countries accounts for a considerable proportion of the annual civil energy consumption. The use of solar energy to drive the air-conditioning system is of great significance to save conventional energy and protect the natural environment. [0003] However, an obvious feature of sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/02
CPCY02E60/145F28D20/02Y02E70/30Y02E60/14
Inventor 李元元程晓敏朱教群周卫兵王志峰
Owner WUHAN UNIV OF TECH
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