Analytical expression for instantaneous exergy efficiency of a shallow basin passive solar still

被引：67

作者：

Kumar, Shiv ^{[1
]}

Tiwari, G. N. ^{[1
]}

机构：

[1] Indian Inst Technol, Ctr Energy Studies, New Delhi 110016, India

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2011年 / 50卷 / 12期

关键词：

Passive solar still; Analytical expression; Instantaneous energy and exergy efficiency; Fractional exergy;

D O I：

10.1016/j.ijthermalsci.2011.06.015

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An expression for instantaneous exergy efficiency of a passive solar still has been developed. The effect of design, operational and climatic parameters, namely effective absorptivity of basin liner (0.9-0.6), glass cover tilt (15-45 degrees) and wind velocity (0.0-10 m/s) have been taken into account. It is found that with decrease in absorptivity (0.9-0.6) with time, the energetic and exergetic efficiencies decrease by 21.8% and 36.7% respectively. The effect of glass cover tilt is found to be insignificant and the respective efficiencies decrease by 0.75% and 0.47% per degree increase in tilt. These efficiencies increase rapidly up to a wind velocity of 2 mis. (C) 2011 Elsevier Masson SAS. All rights reserved.

引用

页码：2543 / 2549

页数：7

共 24 条

[1]

[Anonymous], 1989, AVAILABILITY ANAL GU

[2]

Bejan A., 1987, SOLAR ENERGY ENG, V109, P45

[3]

Cerci Y., 2002, INT J ENERGY, V2, P15, DOI [10.1016/S1164-0235(01)00036-X, DOI 10.1016/S1164-0235(01)00036-X]

[4] MAXIMUM EFFICIENCY OF SINGLE-EFFECT SOLAR STILLS [J].

COOPER, PI .

SOLAR ENERGY, 1973, 15 (03) :205-&

[5]

Cornelissen R.L., 1997, Thermodynamics and sustainable development - The use of exergy analysis and the reduction of irreversibility

[6] The role of exergy in energy policy making [J].

Dincer, I .

ENERGY POLICY, 2002, 30 (02) :137-149

[7] Second law assessment of binary plants generating power from low-temperature geothermal fluids [J].

DiPippo, R .

GEOTHERMICS, 2004, 33 (05) :565-586

[8]

Dodge B.F., 1960, ADV CHEM SER, V27, P7

[9]

Dunkle R.V., 1961, P INT HEAT TRANSF 5, P89

[10] Exergy analysis of the SOL-14 plant (Plataforma Solar de Almeria, Spain) [J].

García-Rodríguez, L ;

Gómez-Camacho, C .

DESALINATION, 2001, 137 (1-3) :251-258

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