Improvement of thermal energy storage density of parabolic dish solar absorber with organic phase change materials

2nd International conference on Advances in Mechanical Engineering

Senthil, Ramalingam^1 ; Sundaram, Palanichamy^1

Department of Mechanical Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India^1

关键词: Institute of Physics Publishing;    Outdoor testing;    Parabolic dishes;    Paraboloidal dish concentrators;    Solar thermal;    Temperature regions;    Thermal applications;    Thermal energy storage densities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/402/1/012046/pdf
DOI  :  10.1088/1757-899X/402/1/012046

来源: IOP

【 摘 要 】

The enhancement of the thermal storage capacity of the solar absorber using phase change material was investigated in this work. A 16 m2 paraboloidal dish concentrator was employed to concentrate the solar rays on the absorber. Erythritol and D-Mannitol are selected based on the temperature region of the absorber during the outdoor testing at the test site (Chennai; 13N, 80E). The mass flow rate of heat transfer fluid was in the range of 25-150 kg/h. The solar absorber with phase change material will ensure a uniform thermal output during a sudden discontinuity of solar radiation, for a few to several minutes. The absorber is ensured with the uniform temperature. PCM solar absorbers will act as a thermal battery for later use in thermal applications with proper insulation of the absorber.2018 Institute of Physics Publishing. All rights reserved.