Energy-saving temperature-control phase-change material
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A phase change material, phase change technology, applied in the direction of heat exchange materials, scarves, clothing, etc.
Inactive Publication Date: 2012-12-19
杨宁
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Summary
Abstract
Description
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Problems solved by technology
[0006] The purpose of the present invention is to provide an energy-saving temperature-controlled phase change material to eliminate or improve the problems of supercooling, phase separation and agglomeration of crystal hydrated salt phase change materials
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0020] (1) Weigh 150 kg of Na 2 HPO 4 12H 2 Add O into the 200L mixer, start stirring, 60r / min. Add 2 kg of NaCl, 1 kg of carbon black, and 2 kg of sodium carboxymethylcellulose, mix for 15 minutes, then add 10 kg of water, continue stirring for 15 minutes, and mix well to obtain a viscous product.
[0021] (2) 30 kilograms of prepared materials are added in the hopper of the canning machine, and canned into a prefabricated PVC composite cloth bag with a certain shape. The canning capacity is 600 g / bag, and the mouth of the bag is sealed to obtain a cooling pad.
Embodiment 2
[0023](1) Weigh 150 kg of Na 2 SO 4 10H 2 Add O into the 200L mixer, start stirring, 60r / min. Add 2.5 kg NaCl, 2 kg Na 2 B 4 o 7 10H 2 O, 2 kilograms of sodium carboxymethylcellulose, after mixing for 15 minutes, add 10 kilograms of water, continue stirring for 15 minutes, and mix to obtain a viscous product.
[0024] (2) 30 kilograms of prepared materials are added in the hopper of the canning machine, and canned into a prefabricated PVC composite cloth bag with a certain shape. The canning capacity is 600 g / bag, and the mouth of the bag is sealed to obtain a cooling pad.
Embodiment 3
[0026] (1) Weigh 150 kg of Na 2 SO 4 10H 2 Add O into the 200L mixer, start stirring, 60r / min. Add 2.5 kg NaCl, 2 kg Na 2 B 4 o 7 10H 2 O, 1 kg of sodium carboxymethyl cellulose, 1 kg of sodium polyacrylate, after mixing for 15 minutes, add 15 kg of water, continue stirring for 15 minutes, and mix to obtain a viscous product.
[0027] (2) 30 kilograms of prepared materials are added into the hopper of the canning machine, and canned into a prefabricated PVC composite cloth bag with a certain shape. The canning capacity is 100 g / bag, and the mouth of the bag is sealed to obtain a cold scarf.
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Abstract
The invention relates to an energy-saving temperature-control phase-change material. The energy-saving temperature-control phase-change material is characterized by comprising compositions in percentage by weight: 50-90% of phase-change host, 1-40% melting point control agent, 0.1-10% nucleating agent, 5-15% of crystal modifier and the balance of water. Crystallized hydrated salt phase-change material has the advantages that raw materials are easily available, the price is low, the energy density is large and the like, and the defects of being supercooling, carrying out phase separating, blocking and the like also seriously hinders the popularization and application. The phase-change host is of crystallized hydrated salt, has fixed melting point, the phase-change temperature is regulated through adding the melting point control agent so as to be capable of completing meeting the requirement of normal application. The phase-change crystal particles are fine through adding the crystal modifier, phase separation can also be prevented, attenuation is slowed down, the stability of the phase-change materials is improved, and the service life of the product is prolonged.
Description
technical field [0001] The invention relates to a phase-change material, in particular to an energy-saving and temperature-controlling phase-change material. Background technique [0002] Using the latent heat of phase change of PCM (Phase Change Materials) to store energy (cold storage, heat storage) is a new environmental protection and energy saving technology. The supply and use of energy have time dislocation contradictions that are difficult to reconcile. Using the energy storage function of phase change materials can alleviate this contradiction and effectively improve energy utilization efficiency. Crystalline hydrated salt phase change materials have the advantages of readily available raw materials, low price, and high energy storage density, but the disadvantages of supercooling, phase separation, and agglomeration also seriously hinder their popularization and application. In order to solve the problems of supercooling, phase separation and agglomeration of crys...
Claims
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Application Information
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