Experimental investigations of a latent heat energy storage unit using finned tubes

被引：57

作者：

Kabbara, Moe ^{[1
]}

Groulx, Dominic ^{[1
]}

Joseph, Alain ^{[2
]}

机构：

[1] Dalhousie Univ, Mech Engn, Halifax, NS B3H 4R2, Canada

[2] Nova Scotia Community Coll, Dartmouth, NS B2Y 0AS, Canada

来源：

APPLIED THERMAL ENGINEERING | 2016年 / 101卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Latent heat storage; Phase change materials; Thermal conductivity enhancement - fins; Experimental investigation; PHASE-CHANGE MATERIAL; CHANGE MATERIAL SLURRY; PCM; ENHANCEMENT; FLOW;

D O I：

10.1016/j.applthermaleng.2015.12.080

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An experimental study was conducted on a latent heat energy storage system (LHESS) consisting of a tank filled with phase change material (PCM), dodecanoic acid, coupled with a finned tube heat exchanger. The study included charging experiments under controlled experimental conditions with parametric alterations on the HTF flow rate and inlet temperature. Discharging experiments using municipal water looked at the discharge time and heat transfer rates based on an alteration of the HTF flow rate. The characterization of the LHESS showed that increasing the HTF inlet temperature during charging resulted in significantly faster melting time. A decrease of 3.5 hours was observed when increasing the HTF temperature from 60 to 70 degrees C, while another decrease of 2 hours was observed with an increase from 70 to 80 degrees C. Increasing the HTF flow rate during charging from 0.7 to 1.5 L min(-1) did not have any significant effects on heat transfer rates, however an increase from 1.5 to 2.5 L min(-1) resulted in higher heat transfer rates and decreased melting time by 1 hour. The increase of flow rate did not have a significant impact during the discharge process. Further work on the system is expected to encompass a real-time solar investigation of this tank. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：601 / 611

页数：11

共 24 条

[1] LOW-TEMPERATURE LATENT-HEAT THERMAL-ENERGY STORAGE - HEAT-STORAGE MATERIALS [J].

ABHAT, A .

SOLAR ENERGY, 1983, 30 (04) :313-332

[2] A comparison of heat transfer enhancement in a medium temperature thermal energy storage heat exchanger using fins [J].

Agyenim, Francis ;

Eames, Philip ;

Smyth, Mervyn .

SOLAR ENERGY, 2009, 83 (09) :1509-1520

[3] Thermal performance of microencapsulated phase change material slurry in turbulent flow under constant heat flux [J].

Alvarado, Jorge L. ;

Marsh, Charles ;

Sohn, Chang ;

Phetteplace, Gary ;

Newell, Ty .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2007, 50 (9-10) :1938-1952

[4] Heat transfer enhancement in water when used as PCM in thermal energy storage [J].

Cabeza, LF ;

Mehling, H ;

Hiebler, S ;

Ziegler, F .

APPLIED THERMAL ENGINEERING, 2002, 22 (10) :1141-1151

[5] Natural convection heat transfer coefficients in phase change material (PCM) modules with external vertical fins [J].

Castell, Albert ;

Sole, Cristian ;

Medrano, Marc ;

Roca, Joan ;

Cabeza, Luisa F. ;

Garcia, Daniel .

APPLIED THERMAL ENGINEERING, 2008, 28 (13) :1676-1686

[6] Dodecanoic acid as a promising phase-change material for thermal energy storage [J].

Desgrosseilliers, Louis ;

Whitman, Catherine A. ;

Groulx, Dominic ;

White, Mary Anne .

APPLIED THERMAL ENGINEERING, 2013, 53 (01) :37-41

[7] Improvement of thermal characteristics of latent heat thermal energy storage units using carbon-fiber brushes: experiments and modeling [J].

Fukai, J ;

Hamada, Y ;

Morozumi, Y ;

Miyatake, O .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2003, 46 (23) :4513-4525

[8]

Garg H., 1985, Solar thermal energy storage

[9]

ILKEN Z, 1993, ELS SER THERM FLUID, P524

[10]

Incropera F.P., 2011, FUNDAMENTALS HEAT MA

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