Optimization on Performance of the Latent Heat Storage Unit (LHSU) in Telecommunications Base Stations (TBSs) in China. (August 2015)

• Record Type: Journal Article
• Authors: Yantong, Li; Quan, Zhang; Xiaoqin, Sun; Yaxing, Du; Shuguang, Liao
• Is Part Of: Energy procedia. Volume 75(2015)
• Page Start: 2119
• Page End: 2124
• Publication Date: 2015-08
• Subjects: latent heat storage unit -- energy savings ratio -- genetic algorithm; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2015.07.338
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: A latent heat storage unit (LHSU) that combined with energy storage modules and an air cooler was investigated to save the space cooling energy consumption in telecommunications base stations in China. A mathematical model was employed to simulate the heat transfer processes within energy storage modules and air cooler. In addition, an experiment was carried out in an enthalpy difference laboratory. The relative errors of air and temperature difference between the simulation and experimental results were calculated for energy charging process and energy discharging process, respectively. It was shown that the relative error for the water circulation system was reported to 1.33% and 5.23% under the charging and discharging process and 7.27% and 8.00% for air circulation system. The annual energy saving ratio was presented as a function of PCM melting temperature for varied pump flow rates and fan flow rates. To obtain the maximum annual energy savings ratio, a genetic algorithm was developed, considering fan flow rate, pump flow rate and melting temperature of PCM. Annual energy savings ratios were improved by 6.48%, 4.39%, 3.48%, and 3.51%, in Shenyang, Zhengzhou, Changsha, and Kunming, respectively.