Experimental analysis of a rotary heat exchanger for waste heat recovery from the exhaust gas of dryer

被引：30

作者：

Akbari, Amirhossein ^{[1
]}

Kouravand, Shahriar ^{[1
]}

Chegini, Gholamreza ^{[1
]}

机构：

[1] Univ Tehran, Agrotechnol Dept, Aburaihan Campus, Tehran, Iran

来源：

APPLIED THERMAL ENGINEERING | 2018年 / 138卷

关键词：

Regenerator; Heat exchanger; Dryer; Efficiency; AIR PREHEATER; REGENERATOR; DESIGN; MODEL; FLOW;

D O I：

10.1016/j.applthermaleng.2018.04.103

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, a rotary heat regenerator is fabricated to preheat the inlet air of the air jet impingement food dryer for by recovery of flue's energy. This regeneration heat exchanger is a rotary matrix made of zigzag shape aluminum sheets with a thickness of 0.5 mm. The effect of thermal recovery on efficiency of air jet impingement dryer is investigated. In addition, the influence of the temperature of the input air, the rotation speed of the matrix and the flow rate of the hot air is investigated on the temperature of fresh air entering at ambient temperature. The experiments are carried out at three levels of parameters. Results show that increasing the rotational speed of the matrix and discharge flow result in decrease of both the outlet temperature of the hot fluid and the efficiency of the heat exchanger. It can conclude that the hot air inlet temperature has the most significant effect on matrix efficiency and heat storage. The efficiency of heat recovery is improved up to 42.2%.

引用

页码：668 / 674

页数：7

共 27 条

[1]

Bahnke GD., 1964, J ENG POWER, V86, P105, DOI [10.1115/1.3677551, DOI 10.1115/1.3677551]

[2]

Buyukalaca O., 2000, INT SEM TRANSP PHEN

[3] Experimental and theoretical investigation of regenerative total heat exchanger with periodic flow for air-conditioning systems [J].

Chang, Chih-Chung ;

Chen, Sih-Li ;

Lin, Tzu-Yuan ;

Chiang, Yuan-Ching .

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2017, 81 :123-133

[4] Numerical analysis of the performance characteristics and optimal design of a plastic rotary regenerator considering leakage and adsorption [J].

Chung, Hyun Joon ;

Lee, Joo Seong ;

Baek, Changhyun ;

Kang, Hoon ;

Kim, Yongchan .

APPLIED THERMAL ENGINEERING, 2016, 109 :227-237

[5] A numerical model for the analyses of heat transfer and leakages in a rotary air preheater [J].

Drobnic, Bostjan ;

Oman, Janez ;

Tuma, Matija .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2006, 49 (25-26) :5001-5009

[6] Experimental and sensitivity analysis of a rotary air preheater for the flue gas heat recovery [J].

Ghodsipour, N ;

Sadrameli, M .

APPLIED THERMAL ENGINEERING, 2003, 23 (05) :571-580

[7] Reducing water usage with rotary regenerative gas/gas heat exchangers in natural gas-fired power plants with post-combustion carbon capture [J].

Herraiz, Laura ;

Hogg, Dougal ;

Cooper, Jim ;

Gibbins, Jon ;

Lucquiaud, Mathieu .

ENERGY, 2015, 90 :1994-2005

[8]

Hinze J. F., 2017, APPL ENERGY

[9]

Kays W.M., 1984, COMPACT HEAT EXCHANG, V3rd

[10]

Lambertson T J, 1957, PERFORMANCE FACTORS

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