Download or read book Experimental Study of Periodic Cooling Tower with Annular Heat Transfer Surfaces written by Joseph Emil Giansante and published by . This book was released on 1977 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improvement of the Environmental and Economic Characteristics of Cooling Towers written by Pou Cheong Hon and published by . This book was released on 1975 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes research for the past year on methods to enhance the environmental and economic performance of dry cooling towers. The work has concentrated on dry cooling towers utilizing periodic water to air heat exchangers. Periodic towers have sheet metal discs partially submerged in hot, power plant condenser effluent. As the discs rotate, the discs alternately absorb heat from the effluent and discharge heat to the air. The means of heat transfer on the air side can be either evaporative and/or convective, depending upon the amount of effluent carried into the air side on the surface of the plates. An oil layer, floated on the water's surface, has been shown to be effective in eliminating water carry-over to the air side. The advantages of the periodic tower lie in the low cost of the discs and the ability to operate dry . A periodic tower should be significantly less expensive than a conventional dry tower fabricated with finned tubes. Further, since the periodic tower can also operate wet, by removing the oil film, the high capacity losses incurred during warm months by conventional dry towers can be eliminated. In the past year, tests on a 20 inch model of the periodic tower indicated that at operational speeds of the full sized disc, no noticeable churning of the oil layer occurred. Heat transfer rates measured with the 20 inch model were 20 percent higher than predicted by an approximate analysis. Finally, silicone oils' low vapor pressure make them superior to hydrocarbon oils on the basis of evaporation rates, but their higher costs and possible ecological impact necessitates a closer look at hydrocarbon oils. Construction of the full scale test facility is complete. Shaped, rigid five foot diameter discs have been designed, fabricated, and assembled into an initial test module. Instrumentation for heat transfer tests is also complete; including instrumentation for measuring disc temperatures, and both air and water flow rates and temperatures. A parametric study of the oil film thickness on the air side of the test module has been completed. Measured thicknesses were 20 percent less than that previously predicted. This thinner oil layer means an increase in the disc heat transfer. A test apparatus to study the further enhancement of disc performance by surface roughening has been constructed, instrumented and calibrated. The apparatus has reproduced experimental friction factor and heat transfer coefficient curves for flat plates, and will be used to evaluate enhancement as a function of rib shape, size, spacings and Reynold's number. Visits to several architectural engineers across the country were made with representatives of Air Preheater Company to gage their acceptance of the rotary concept. All felt that if the reliability of the rotary concept could be demonstrated and the costs were less than equivalent conventional dry towers, the rotary design would be the preferred choice. Based on these findings, Air Preheater is planning to do design and cost studies of the rotary concept for the coming year.
Download or read book An Experimental Study of a Model Periodic Cooling Tower for Electric Power Plants written by Pou Cheong Hon and published by . This book was released on 1975 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study of a Natural Draft Cooling Tower Model with Emphasis on Cold Inflow at Exit written by Michael Joseph Wynne and published by . This book was released on 1979 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improvement of the Environmental and Economic Characteristics of Cooling Towers written by Monroe W. Robertson and published by . This book was released on 1973 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: A periodic cooling tower was designed to operate at vastly lower evaporation rates than conventional wet towers and at a significant capital savings over dry cooling towers. In this new design discs of galvanized steel sheet metal rotate from the hot water to the cool air. A thin layer of oil floated on the water surface separates the water stream from the air stream and prevents any water carryover. Tests on a model of the periodic tower showed the amount of heat transfer due to evaporation to be less than four tenths of one per cent as compared to eighty per cent for conventional dry towers. Since one half of the total cost of a dry tower is heat transfer surface cost, the new design can significantly reduce the total cost of dry cooling towers.
Download or read book Cooling Towers written by Nicholas P. Cheremisinoff and published by Butterworth-Heinemann. This book was released on 1981 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study of Heat Transfer Inside Film Cooling Hole Models written by Faysal Baty and published by . This book was released on 1993 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of the Heat and Mass Transfer Phenomena in a Counterflow Wet Cooling Tower with Foam Ceramic Packing written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Performance of the Full Scale Periodic Cooling Tower written by John William Dong and published by . This book was released on 1976 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Heat Transfer written by and published by . This book was released on 1989 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Chemical Engineering Abstracts written by and published by . This book was released on 1986 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1977 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indexes to Publications written by American Society of Mechanical Engineers and published by . This book was released on 1978 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to Scientific Technical Proceedings written by and published by . This book was released on 1979-07 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monthly, with annual cumulation. Published conference literature useful both as current awareness and retrospective tools that allow searching by authors of individual papers as well as by editors. Includes proceedings in all formats, i.e., books, reports, journal issues, etc. Complete bibliographical information for each conference proceedings appears in section titled Contents of proceedings, with accompanying category, permuterm subject, sponsor, author/editor, meeting location, and corporate indexes. Contains abbreviations used in organizational and geographical names.
Download or read book Society Records written by American Society of Mechanical Engineers and published by . This book was released on 1973 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
