Effect of straight section length variations on performance of serpentine–tube heat exchangers

سال انتشار: 1393
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,167

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شناسه ملی سند علمی:

MOBADDEL06_030

تاریخ نمایه سازی: 6 آذر 1393

چکیده مقاله:

Indirect channels like the serpentine tubes are widely utilized in many engineering applications such as chemical and petrochemical industries, air conditioning and refrigeration systems, and modern energy conversion, etc. In the present work, the effect of straight section length variations on the performance of serpentine–tube heat exchangers is experimentally investigated. To obtain accurate results, a highly precise test loop with the ability to produce a constant wall temperature condition is designed and fabricated.It is found that creating short straight section lengths at the beginning of the serpentine tubes enhancesboth the heat transfer coefficient and pressure drop values. However, this technique improves the overall thermal-hydraulic performance of the serpentine tubes about 10%.

کلیدواژه ها:

Heat transfer enhancement ، Serpentine tube ، Straight section length variations ، Experimental study

نویسندگان

m khoshvaght aliabadi

Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran.

o alizadeh

Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran.

o sartipzadeh

Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran.

h shabanpour

Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran.