An Experimental Investigation on the Performance of a Water Storage Tank with Sodium Acetate Trihydrate
Author:
Huang JieORCID,
Xu Fei,
Wang ZilongORCID,
Zhang Hua
Abstract
Phase change material (PCM) water tanks have a major influence on the efficiency improvement of solar energy systems. This article discusses the effects of PCM under various inlets in a tank based on related research. So as to research the performance of the water storage tank, this paper built a set of water tank experimental systems using sodium acetate trihydrate. The thermal characteristics of two different water tanks were analyzed at 2, 6 and 10 L/min when the inlet temperature was 20 °C and the initial high temperature was 80 °C. The test results indicate that adding PCMs helps to provide an extra 1.4% of stored heat, prolong the hot water outlet time, and has a better thermal stratification, compared with ordinary water tanks. However, PCMs do not give off heat quickly at high flow rates. Besides the exergy efficiency (EE) gradually decreasing, the MIX number first decreases and then increases; the fill efficiency (FE) has the opposite trend with the flow increasing. FE has a max of 0.905 at 6 L/min.
Funder
Special Project of Biomedical Science and Technology Support of Shanghai Science and Technology Innovation Action Plan
Shanghai Municipal Natural Science Foundation
Open Project of the Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering and the Central Guidance on Local Science and Technology Development Fund of Shanghai City
Special Project of Independent Innovation of Qingdao City
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference34 articles.
1. Preparation and characterization of a novel composite phase change heat storage material;Mao;Renew. Energy,2018
2. Effect of rectangular hot water tank position and aspect ratio on thermal stratification enhancement;Renew. Energy,2018
3. Research progress of heat storage materials of molten nitrate in solar energy utilization;Zhang;Mater. Rev.,2015
4. Experimental investigation of the comprehensive heat transfer performance of PCMs filled with CMF in a heat storage device;Zhu;Int. J. Heat Mass Transf.,2022
5. Effect of copper metal foam proportion on heat transfer enhancement in the melting process of phase change materials;Wang;Appl. Therm. Eng.,2022