Preparation and Properties of Organic/Inorganic Nano-Composite Phase Change Materials for Heat Energy Storage in Building Energy Conservation

2011 ◽  
Vol 374-377 ◽  
pp. 346-351
Author(s):  
Jin Chang ◽  
Wu Biao Duan ◽  
Bo Liu ◽  
Sheng Jun Fu
Keyword(s):  
Energy Storage ◽  
Energy Conservation ◽  
Phase Change ◽  
Fossil Fuels ◽  
Phase Change Materials ◽  
Intercalation Compound ◽  
Heat Energy ◽  
Experimental Conditions ◽  
Nano Composite ◽  
Simple Modification

Latent heat energy storage is becoming more and more attractive for energy conservation of buildings. Phase change materials (PCMs) can be applied in building envelopes to conserve heat energy in building products. The technology of PCMs is efficient and economical due to the rising cost of fossil fuels and environmental concerns. In this paper, binary organic/inorganic nano-composite PCM by intercalation compound is prepared, preparation conditions are studied systematically; and structural analysis and characterization of performance are conducted. The results obtained show that a good potential for heating and cooling is in building through nano-composite PCM and overcomes weaknesses and deficiencies of pure PCMs. A simple modification of binary organic/inorganic nano-composite PCM is discussed firstly. Secondly, the various influencing factors of thermal storage capacity are discussed. The optimum experimental conditions for preparation of organic/inorganic nano-composite PCM are, 55%~60% for the content of organic substances, 5h for the preparation time, 70~80°C for the preparation tem. and 60~120 mesh for the best granularity of composite PCM.

scholarly journals Analysis of heat and mass transfer mechanism during thermal energy storage and temperature regulation

2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3185-3193
Author(s):  
Sina Dang ◽  
Hongjun Xue ◽  
Xiaoyan Zhang ◽  
Chengwen Zhong
Keyword(s):  
Mass Transfer ◽  
Energy Storage ◽  
Low Temperature ◽  
Phase Change ◽  
Heat And Mass Transfer ◽  
Latent Heat ◽  
Temperature Regulation ◽  
Phase Change Materials ◽  
Heat Energy ◽  
Temperature Environment

To strengthen the heat and mass transfer capacity and improve the temperature regulation rate, potential storage is taken as the research object in this research to study the heat energy storage of the battery in the low temperature environment. Lattice Boltzmann method is adopted to study the heat energy storage influence mechanism of the temperature regulation system of the low temperature phase-change materials. In addition, the influence of different physical parameters (thermal conductivity and latent heat of phase change) on the thermal insulation of the system in the process of temperature control is revealed. The results show that the mechanism of heat and mass transfer in the process of heat storage and temperature control is related to the different physical properties of phase change materials. The decrease of thermal conductivity and the increase of latent heat of phase change materials will greatly increase the effect of heat energy storage. Therefore, under the action of phase change latent heat, phase change material can effectively extend the holding time of the battery in the low temperature environment.

Research and Development on Phase Change Energy Storage Exchangers

2011 ◽  
Vol 239-242 ◽  
pp. 2769-2774
Author(s):  
Ning Li ◽  
Xiao Qin Zhu ◽  
Wen Chi ◽  
Jing Hua Chang ◽  
Hai Ming Gu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Heat Exchange ◽  
Research And Development ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heat Energy ◽  
Storage Technique ◽  
Made In

Since phase change energy storage exchanger has two functions of heat exchange and heat energy storage, it is an important component of heat energy storage technique with phase change materials, its research has been thought highly by people, and great achievements have been obtained during the recent years. A review on its various structures and their research and development was made in this paper, and its further research and applications were also analyzed and forecasted.

Experimental Investigation of Solar Paraffin Wax Melting Unit Integrated with Phase Change Heat Energy Storage by Using Phase Change Material

2015 ◽  
Vol 766-767 ◽  
pp. 451-456 ◽  
Author(s):  
V. Saikrishnan ◽  
P.S. Jagadeesh ◽  
K.R. Jayasuriyaa
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Phase Change Materials ◽  
Supply And Demand ◽  
Heat Energy ◽  
Paraffin Wax ◽  
Heat Transfer Fluid ◽  
Heat Of Fusion ◽  
Change Material

An Experimental study on phase change heat energy storage system (PCHES) using Erythritol as a phase change material (PCM) has been carried out. Simple and popularly used domestic solar thermal applications make use of direct radiation energy of the sun for cooking, liquid heating, drying and many others as it is the remarkable potential renewable energy source. Effective utilization of such energy can be made with the development of economically operating phase change heat energy storage (PCHES) which is elemental in spanning the gap between supply and demand of energy. PCHES that stores the latent heat of fusion of phase change materials is provocative because of its huge storage density. An integrated Solar wax melting unit with phase change thermal energy storage using ethylene glycol as heat transfer fluid(HTF) to transfer the heat from parabolic dish collector to the wax melting unit is investigated. In this experimental setup, the paraffin wax container is kept in an insulated heat retrieval unit. Heat stored during the daytime by the PCHES is utilized in the off sunshine hours.

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