Experimental investigation of flow boiling in vertical microchannels

• Autorzy: Shuai J. , Kulenovic R. , Mertz R. , Groll M.
• Języki publikacji: EN

Abstrakty

EN

Flow boiling heat transfer in micro-scale vertical channels is attracting increasing attention with the progressing miniaturization in many industrial fields, e.g. electronics, chemical engineering, etc. Experiments have been conducted to investigate the heat transfer and flow boiling phenomena in microchannels (rectangular channels with 2 mm x 4 mm and 0.5 mm x 2.0 mm (width x height). The working fluid is deionized water. The flow rate is 200--700 kg/(m'2s) at atmospheric pressure. With the aid of video camera, flow boiling phenomena are observed as well. Three flow patterns, i.e. bubbly flow, slug flow and annular flow, could be distinguished. Features of pressure drop fluctuations between the inlet and outlet of the test section are also presented.

Słowa kluczowe

EN

flow boiling; flow visualization; microchannel; pressure drop fluctuation

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2002
• Tom: Vol. 23, no 4
• Strony: 39--48
• Opis fizyczny: Bibliogr. 7 poz.,

Twórcy

autor

Shuai J.

• Universitat Stuttgart, Niemcy

autor

Kulenovic R.

• Universitat Stuttgart, Niemcy

autor

Mertz R.

• Universitat Stuttgart, Niemcy

autor

Groll M.

• Universitat Stuttgart, Niemcy

Bibliografia

• [1] LAZAREK G. M., BLACK S.H.: Evaporative heat transfer, pressure drop and critical heat flux in a small vertical tube with R-113, Int. J. Heat Mass Transfer, Vol. 25/7, 1982, 945-960.
• [2] WAMBSGANSS M. W., FRANCE D. M., JENDRZEJCZYK J. A. AND TRAN T. N.: Boiling heat transfer in a horizontal smalldiameter tube, J. Heat Transfer, 115(1993), 963-972.
• [3] CORNWELL K.: Confined bubble flow and boiling in narrow space, Proc. 10th Int. Heat Transfer Conf., Brighton, UK, 1994.
• [4] PENG X. F., WANG B. X., PETERSON G. P. AND MA H. B.: Experimental investigation of heat transfer in flat plates with rectangular microchannels, Int. J. Heat Mass Transfer, Vol. 38/1, 1995, 127-137.
• [5] TONG W., BERGLES A. E. AND JENSEN M. K.: Pressure drop with highly subcooled flow boiling in small-diameter tubes, Exp. Thermal Fluid Sci., 15(1997), 202-212.
• [6] MERTZ R., GROLL M.: Flow boiling heat transfer in narrow channels, Int. J. Heat and Technology, 18(2000), suppl. n.1, 75-79.
• [7] KANDLIKAR S. G., STEINKE M. E., TIAN S., AND CAMPBELL L. A.: High-speed photographic observation of flow boiling of water in parallel mini-channels, 35th National Heat Transfer Conf., Anaheim, CA, 2001.