Synthesis and Properties of a Novel Environmentally Friendly Phase Change Energy Storage Coating Additive

Waterborne polyurethane (PU) coatings are diluted with water as the medium, without volatile organic solvents and harmful to human body and environment. Adding insulation materials in building individually is a waste of resource. We found a kind of waterborne PU phase change energy storage material easily dissolved and formed film after solvent evaporating having the potential of coating. In this article, we synthesized a new kind of waterborne PU phase change energy storage coating additive via two-step synthesis method, of which a new type of aromatic tetrahydroxycompound (ATTC) is used as branch unit, 4, 4'-diphenylmethanediisocyanate (MDI) and polyethylene glycol (PEG) respectively as hard and soft segments. POM photographs show that the sphaerocrystals of this new coating additive can reach 200-500μm. The crystal structure is characterized by XRD, and the phase change unit is PEG. DSC tests show that the phase change enthalpy value of this coating additive is very high reached more than 90 J/g. The preservation of this water-soluble PU coating is relatively simple, using water as solvent, which can be easy to dissolve in water and form film after water evaporated.

Download Full-text

Study on selection of phase change energy storage material in northern rural heating system

6th International Conference on Energy and Environment of Residential Buildings (ICEERB 2014) ◽

10.1049/cp.2014.1601 ◽

2014 ◽

Author(s):

H.X. Li ◽

X.X. Cai ◽

G.H. Feng ◽

H.Y. Ding

Keyword(s):

Energy Storage ◽

Phase Change ◽

Heating System ◽

Storage Material ◽

Energy Storage Material ◽

Selection Of

Download Full-text

Thermal enhancement and shape stabilization of a phase-change energy-storage material via copper nanowire aerogel

Chemical Engineering Journal ◽

10.1016/j.cej.2019.05.104 ◽

2019 ◽

Vol 373 ◽

pp. 857-869 ◽

Cited By ~ 15

Author(s):

Lin Zhang ◽

Lu An ◽

Yaohui Wang ◽

Andrew Lee ◽

Yue Schuman ◽

...

Keyword(s):

Energy Storage ◽

Phase Change ◽

Storage Material ◽

Copper Nanowire ◽

Thermal Enhancement ◽

Energy Storage Material

Download Full-text

Application of New Type Phase Change Energy Storage Devices on the Refrigeration Equipment

Advanced Science Letters ◽

10.1166/asl.2012.2352 ◽

2012 ◽

Vol 8 (1) ◽

pp. 588-593

Author(s):

Peng-Tao Chi ◽

Yong-Qi Xie ◽

Jian-Zu Yu ◽

Xian-Ning Yang

Keyword(s):

Energy Storage ◽

Phase Change ◽

Energy Storage Devices ◽

Storage Devices ◽

Refrigeration Equipment ◽

Type Phase ◽

New Type

Download Full-text

Development and Testing of an Energy Storage Material/Phase Change Material Enhanced Heat Sink

Heat Transfer Engineering ◽

10.1080/01457632.2016.1255071 ◽

2016 ◽

Vol 38 (17) ◽

pp. 1429-1438 ◽

Cited By ~ 6

Author(s):

Jianping Tu ◽

Wei Shih ◽

Henry Mak ◽

Walter W. Yuen

Keyword(s):

Energy Storage ◽

Phase Change ◽

Phase Change Material ◽

Heat Sink ◽

Storage Material ◽

Energy Storage Material ◽

Change Material

Download Full-text

Preparation and thermal properties of graphite foam/eutectic salt composite as a phase change energy storage material

Carbon ◽

10.1016/j.carbon.2015.06.051 ◽

2015 ◽

Vol 93 ◽

pp. 1087 ◽

Cited By ~ 2

Author(s):

Cha-xiu Guo ◽

Gao-lin Hu ◽

Zhi-jun Luo

Keyword(s):

Thermal Properties ◽

Energy Storage ◽

Phase Change ◽

Storage Material ◽

Eutectic Salt ◽

Energy Storage Material ◽

Graphite Foam

Download Full-text

Preparation of Phase-Change-Material/Lightweight Aggregate Composite as an Energy Storage Material

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.3404 ◽

2011 ◽

Vol 347-353 ◽

pp. 3404-3408 ◽

Cited By ~ 1

Author(s):

H. Z. Cui ◽

G. F. Zhu

Keyword(s):

Energy Storage ◽

Phase Change ◽

Phase Change Material ◽

Latent Heat ◽

Cement Paste ◽

Lightweight Aggregate ◽

Lauryl Alcohol ◽

Storage Material ◽

Energy Storage Material ◽

Change Material

In this paper, a phase-change-material/lightweight aggregate (PCM-LWA) composite thermal energy storage material was prepared by absorbing the lauryl alcohol, which is one kind of phase change materials, into porous lightweight aggregates (LWAs) that have an excellent absorbability. In such a composite, the lauryl alcohol serves as a latent heat storage material and the porous lightweight aggregate acts as the supporting material. In order to prevent the melted lauryl alcohol leak from the porous LWAs, surface seal processing for the PCM-LWA was necessary. In this research, pure cement paste and polymer modified cement paste were used to seal the PCM-LWA surface. Through comparison between the differential scanning calorimetry (DSC) tests for lauryl alcohol and PCM-LWA, it can be known that the solid-liquid phase change temperature of the composite PCM-LWA was slightly higher than that of the lauryl alcohol, and latent heat of the PCM-LWA was smaller than that of the pure PCM.

Download Full-text

Experimental Study of Thermal Energy Storage System

10.1115/imece2000-1348 ◽

2000 ◽

Author(s):

Bing-Chwen Yang ◽

Shr-Hau Huang ◽

Hsiang-Hui Lin

Keyword(s):

Energy Storage ◽

Phase Change ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Storage Material ◽

Heating Chamber ◽

Heating And Cooling ◽

Energy Storage Material ◽

Thermal Energy Storage Material ◽

Change Material

Abstract In this paper, the feasibility of phase change material that used for thermal energy storage in the range of 400 ∼ 600°C in the form of latent heat is examined for nine different salts and eutectic salts. The Differential Scanning Calorimeter (DSC) was used to perform the quantitative measurement of the phase change temperature (Tm) and latent heat (ΔH). The thermal properties of NaCl-CaCl2 at repeated heating and cooling cycles were studied with a heating chamber. The quality observation for this phase change material was also performed with this heating chamber to understand its physical phenomena during heating and cooling process. It is found that NaCl-CaCl2 is a good candidate of thermal energy storage material for its stable properties, low cost, and no toxic. Finally, the thermal storage unit with NaCl-CaCl2 as thermal energy storage material was tested to study and evaluate its performance as the application in the waste heat recovery system.

Download Full-text

Heat Energy Storage Characteristics of a New Type of PCM Heat Exchange Tube

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.3131 ◽

2012 ◽

Vol 550-553 ◽

pp. 3131-3134

Author(s):

Xiao Qin Zhu ◽

Zhao Sheng Cao ◽

Zi Yue Zhu ◽

Jing Hua Chang ◽

Hai Ming Gu ◽

...

Keyword(s):

Energy Storage ◽

Heat Exchange ◽

Phase Change ◽

Phase Change Material ◽

Waste Heat ◽

Heat Energy ◽

Heat Exchange Tube ◽

New Type ◽

Change Material ◽

Storage Characteristics

Heat energy storage characteristics of a new type of PCM heat exchange tube was researched, in which it took the traditional double-tube exchanger as the total construction foundation and phase change material(CaCl2•6H2O) was filled in the annular area between the inner tube and the outer tube. As air with different temperatures flowed through the PCM heat exchange tube, temperature measurements were carried out at the inlet and the outlet by the experimental system. The experimental results showed that, a new type of PCM heat exchange tube could store heat energy from the hot air by the phase change material in the annular area, and discharge the stored heat energy into the required fluid if necessary. Thus it has two functions of heat exchange and heat energy storage, and is mainly suitable for recovery and utilizations of heat energy in greenhouses, buildings, air conditioning and manifold industrial afterheat or waste heat.

Download Full-text