Exergy and energy analysis of a novel type solar collector under steady state condition: Experimental and CFD analysis

被引：40

作者：

Gunjo, Dawit Gudeta ^{[1
]}

Mahanta, Pinakeswar ^{[1
]}

Robi, Puthuveettil Sreedharan ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Mech Engn, Gauhati 781039, Assam, India

来源：

RENEWABLE ENERGY | 2017年 / 114卷

关键词：

Exergy efficiency; Energy efficiency; Overall heat loss coefficient; Collector heat loss factor; Absorber plate temperature; CFD; WATER-HEATER; THERMAL PERFORMANCE; FLAT; OPTIMIZATION; DESIGN; SIMULATION; SYSTEM;

D O I：

10.1016/j.renene.2017.07.072

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Computational fluid dynamics model for a flat plate solar collector was developed to predict the performance of a single bent riser tube attached to an absorber plate. The model was validated by carrying out experiments. The exergy and energy efficiencies, overall heat loss coefficient, outlet water and absorber plate temperature of the solar collector were investigated. Maximum thermal efficiency of 71% was obtained with 60 degrees C outlet water temperature for the investigated solar collector. Comparison of numerical values with the experimental results indicated minimal deviation error. The low values of deviation error establish the confidence in the predictive capabilities of the developed model. Effects of various operating parameters such as mass flow rate, working fluids, ambient temperature, inlet water temperature, collector heat loss factor and solar insolation on exergy and energy efficiencies were also investigated. Parametric study revealed increase in exergy efficiency of the collector with increase in collector heat loss factor, solar insolation and decreases with rise in ambient temperature. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：655 / 669

页数：15

共 35 条

[1] Numerical study of conduction and convection heat losses from a half-insulated air-filled annulus of the receiver of a parabolic trough collector [J].

Al-Ansary, Hany ;

Zeitoun, O. .

SOLAR ENERGY, 2011, 85 (11) :3036-3045

[2]

Bejan A., 1982, Adv. Heat Transfer, V15, P158, DOI DOI 10.1016/S0065-2717(08)70172-2

[3] The use of gas working fluids in parabolic trough collectors - An energetic and exergetic analysis [J].

Bellos, Evangelos ;

Tzivanidis, Christos ;

Antonopoulos, Kimon A. ;

Daniil, Ilias .

APPLIED THERMAL ENGINEERING, 2016, 109 :1-14

[4] Energy and exergy analysis of photovoltaic-thermal collector with and without glass cover [J].

Chow, T. T. ;

Pei, G. ;

Fong, K. F. ;

Lin, Z. ;

Chan, A. L. S. ;

Ji, J. .

APPLIED ENERGY, 2009, 86 (03) :310-316

[5] Thermal analysis and performance optimization of a solar water heater flat plate collector: Application to Tetouan (Morocco) [J].

Dagdougui, Hanane ;

Ouammi, Ahmed ;

Robba, Michela ;

Sacile, Roberto .

RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2011, 15 (01) :630-638

[6] Performance evaluation of an integrated solar water heater as an option for building energy conservation [J].

Dharuman, C ;

Arakeri, JH ;

Srinivasan, K .

ENERGY AND BUILDINGS, 2006, 38 (03) :214-219

[7]

Duffle JohnA., 2013, Solar Engineering of Thermal Processes

[8] Optimization of flow distribution in flat plate solar thermal collectors with riser and header arrangements [J].

Facao, Jorge .

SOLAR ENERGY, 2015, 120 :104-112

[9] Exergetic optimization of flat plate solar collectors [J].

Farahat, S. ;

Sarhaddi, F. ;

Ajam, H. .

RENEWABLE ENERGY, 2009, 34 (04) :1169-1174

[10] Design and simulation of a new energy-conscious system (CFD and solar simulation) [J].

Gadi, MB .

APPLIED ENERGY, 2000, 65 (1-4) :251-256

← 1 2 3 4 →