Thermal Performance Analysis of the Charging/Discharging Process of a Shell and Horizontally Oriented Multi-Tube Latent Heat Storage System

被引：24

作者：

Fadl, Mohamed ^{[1
]}

Eames, Philip ^{[1
]}

机构：

[1] Loughborough Univ, Thermal Energy Storage Grp, CREST, Loughborough LE11 3TU, Leics, England

来源：

ENERGIES | 2020年 / 13卷 / 23期

基金：

英国工程与自然科学研究理事会;

关键词：

heat exchanger; PCMs; latent heat storage; HTF; solidification and melting;

D O I：

10.3390/en13236193

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this study, the thermal performance of latent heat thermal energy storage system (LHTESS) prototype to be used in a range of thermal systems (e.g., solar water heating systems, space heating/domestic hot water applications) is designed, fabricated, and experimentally investigated. The thermal store comprised a novel horizontally oriented multitube heat exchanger in a rectangular tank (forming the shell) filled with 37.8 kg of phase change material (PCM) RT62HC with water as the working fluid. The assessment of thermal performance during charging (melting) and discharging (solidification) was conducted under controlled several operational conditions comprising the heat transfer fluid (HTF) volume flow rates and inlet temperatures. The experimental investigations reported are focused on evaluating the transient PCM average temperature distribution at different heights within the storage unit, charging/discharging time, instantaneous transient charging/discharging power, and the total cumulative thermal energy stored/released. From the experimental results, it is noticed that both melting/solidification time significantly decreased with increase HTF volume flow rate and that changing the HTF inlet temperature shows large impacts on charging time compared to changing the HTF volume flow rate. During the discharging process, the maximum power output was initially 4.48 kW for HTF volume flow rate of 1.7 L/min, decreasing to 1.0 kW after 52.3 min with 2.67 kWh of heat delivered. Based on application heat demand characteristics, required power levels and heat demand can be fulfilled by employing several stores in parallel or series.

引用

页数：23

共 33 条

[1] Heat transfer enhancement in medium temperature thermal energy storage system using a multitube heat transfer array [J].

Agyenim, Francis ;

Eames, Philip ;

Smyth, Mervyn .

RENEWABLE ENERGY, 2010, 35 (01) :198-207

[2] Performance comparison of the thermal behavior of xylitol and erythritol in a double spiral coil latent heat storage system [J].

Anish, R. ;

Mariappan, V ;

Joybari, Mahmood Mastani ;

Abdulateef, Ammar M. .

THERMAL SCIENCE AND ENGINEERING PROGRESS, 2020, 15

[3]

[Anonymous], 2016, BEIS EV GATH THERM E

[4] Experimental study of thermal energy storage characteristics of a paraffin in a horizontal tube-in-shell storage unit [J].

Avci, Mete ;

Yazici, M. Yusuf .

ENERGY CONVERSION AND MANAGEMENT, 2013, 73 :271-277

[5] Compact latent heat storage decarbonisation potential for domestic hot water and space heating applications in the UK [J].

da Cunha, Jose Pereira ;

Eames, Philip .

APPLIED THERMAL ENGINEERING, 2018, 134 :396-406

[6]

Ding Y., 2015, SOLAR ELECT ENERGY S

[7] Solar-driven melting dynamics in a shell and tube thermal energy store: An experimental analysis [J].

Egea, A. ;

Solano, J. P. ;

Perez-Garcia, J. ;

Garcia, A. .

RENEWABLE ENERGY, 2020, 154 :1044-1052

[8]

Fadl M., 2018, IOP C SERIES

[9]

Fadl M.S., 2019, ADV THERM ENERGY STO

[10] An experimental investigation of the heat transfer and energy storage characteristics of a compact latent heat thermal energy storage system for domestic hot water applications [J].

Fadl, Mohamed ;

Eames, Philip C. .

ENERGY, 2019, 188

← 1 2 3 4 →