Title: Exergy analysis of a latent storage system combined solar selective coating with nickel nano-particles
Authors: Hao Liang; Qichang Yang
College of Water Conservancy and Civil Engineering, China Agricultural University, 17, Qinghua East Street, Beijing, 100083, China
Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, 12, Zhongguancun South Street, Beijing, 100081, China; Key Lab of Energy Conservation and Waster Treatment of Agricultural Structures, Ministry of Agriculture, 12, Zhongguancun South Street, Beijing, 100081, China
Abstract: Exergy analysis of a latent heat storage system with phase change materials (PCMs) for a flat-plate was investigated. A selectively absorbing surface consists of nickel nano-particles was electrochemically prepared for solar collecting. The eutectic mixture formamide-sodium acetate trihydrate was used as phase change material (PCM), with a melting temperature of 40.5°C and heat of fusion of 255 kJ/kg. Exergy analysis, which is based on the second law of thermodynamics were introduced to evaluate efficiency of the system during the charging period. It was observed that the average energy and exergy efficiency of the system was 29.0% and 78.3%, respectively.
Keywords: latent storage systems; nanomanufacturing; exergy analysis; phase change materials; PCMs; greenhouses; greenhouse heating; solar selective coating; nickel nanoparticles; nanotechnology; solar collection; energy efficiency; exergy efficiency; solar energy; solar power; agriculture; farming.
Int. J. of Nanomanufacturing, 2013 Vol.9, No.3/4, pp.338 - 346
Submission date: 11 Oct 2012
Date of acceptance: 16 Feb 2013
Available online: 29 Aug 2013