Download or read book Development and Conceptual Design of an Advanced Wet dry Cooling Tower written by David Herbert Walker and published by . This book was released on 1978 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Development of an Advanced Wet dry Cooling Tower Concept written by John Lorenzo Curcio and published by . This book was released on 1975 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Dry Cooling Tower Concept written by and published by . This book was released on 1975 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this year's work has been to develop a new dry cooling tower surface. The new surface utilizes a modification of film type packing in wet cooling towers. It is a concept which may eliminate excessive water loss. Cost of fabrication, and effectiveness of heat transfer surface were among the major design considerations. Based on preliminary water wetting investigations over simple geometric surfaces, a conductive plate was shaped to form a series of V-troughs. It provided open channeled water flow separated by fin-like dry surfaces, and simultaneously self distributed random spraying water. The design not only channels the water flow, but also provides a convenient means to vary the air-water interfacial area to the water-plate and dry plate contact area. Varying these ratios will become necessary as optimization studies are completed. To investigate the effectiveness of this design and of future advanced wet-dry concepts, a model heat transfer test apparatus was constructed. It provided operating conditions (water temperature, water flow rates and air flow rates) similar to those of existing wet cooling tower packing sections. All of the design requirements have been satisfied: hot water flow recirculation and counter flow air stream. A computer simulation of the proposed surface was made. The simulation modeled heat and mass transfer from the air-water interface as well as heat transfer from the dry surface area. Initial parametric runs were made using the program. They indicate that when the ratio of wet surface area to total surface area is five percent, approximately seventy-five percent of the energy transfer takes place as sensible heat transfer; whereas, for a wet tower at similar conditions approximately eighty-five percent of the total energy transfer takes place by evaporation.

Download or read book Advanced Wet dry Cooling Tower Concept Performance Prediction written by Troxell Kimmel Snyder and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this years' work has been to test and analyze the new dry cooling tower surface previously developed. The model heat transfer test apparatus built last year has been instrumented for temperature, humidity and flow measurement and performance has been measured under a variety of operating conditions. Tower Tests showed approximately 40-50% of the total energy transfer as taking place due to evaporation. This can be compared to approximately 80 to 85% for a conventional wet cooling tower. Comparison of the model tower test results with those of a computer simulation has demonstrated the validity of that simulation and its use as a design tool. Computer predictions have been made for a full-size tower system operating at several locations. Experience with this counterflow model tower has suggested that several design problems may be avoided by blowing the cooling air horizontally through the packing section. This cross flow concept was built from the previous counterflow apparatus and included the design and fabrication of new packing plates. Instrumentation and testing of the counterflow model produced data with an average experimental error of 10%. These results were compared to the predictions of a computer model written for the cross flow configuration. In 14 test runs the predicted total heat transfer differed from the measured total heat transfer by no more than 8% with most runs coming well within 5%. With the computer analogy's validity established, it may now be used to help predict the performance of full scale wet-dry towers.

Download or read book Federal Role in Dry and Wet dry Cooling Tower Research Development and Demonstration written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is concluded that it is appropriate for the Energy Research and Development Administration (or its successor) to sponsor a program of fiscal, technical and management support directed at providing a commercial advanced concept wet/dry (or dry) cooling technology for electric utility use within ten years. This federal role is thought to be appropriate for several reasons, including: the need for such technology, although expected to grow only slowly at first, will eventually be quite widespread; wet/dry and dry cooling tower technology is currently available, but successful development of an advanced concept should produce significant cost savings for this component of power plant costs; established cooling tower vendors do not appear to have sufficient research dollars available to support a program of the magnitude planned by ERDA, although at least one non-vendor advanced concept development project is underway; the Electric Power Research Institute (EPRI), the State of California and potentially other entities have expressed a willingness to support the ERDA program with significant funds, but state that they cannot assume complete funding at this time; and even without the shared funding mentioned above, the ERDA program is expected to produce discounted public and/or private industry benefits in excess of its costs.

Download or read book Advanced Wet dry Cooling Tower Concept Cross flow Tests written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The design, operation, instrumentation, and performance testing of a crossflow evaporative cooling tower are discussed, and computer predictions for performance are compared with test data. Experimental results for 14 runs agreed with heat and mass transfer coefficient calculations within 5% for 11 runs and within 8% for the remaining 3 runs. It was concluded that the computer model is valid for use in future design studies, that the wet-dry packing is effective in reducing cooling water consumption, and that the crossflow air-water arrangement shows much promise for future development. (LCL).

Download or read book Dry Cooling Enhancement Program at the Pacific Northwest Laboratory written by B. M. Johnson and published by . This book was released on 1977 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1981 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Prediction and Evaluation of an Advanced Wet dry Cooling Tower Concept written by Troxell Kimmel Snyder and published by . This book was released on 1977 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1978 ERDA Authorization February 22 1977 written by United States. Congress. House. Committee on Science and Technology. Subcommittee on Fossil and Nuclear Energy Research, Development, and Demonstration and published by . This book was released on 1977 with total page 1408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1978 ERDA Authorization written by United States. Congress. House. Committee on Science and Technology and published by . This book was released on 1977 with total page 1410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Public Works for Water and Power Development and Energy Research Appropriations for Fiscal Year 1978 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Public Works and published by . This book was released on 1977 with total page 1364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dry Cooling of Power Generating Stations written by and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to enhanced concern about water supplies and water use priorities, dry cooling systems for thermal power plants are receiving increased consideration, even though electric power from dry-cooled power plants currently costs 10 to 15 percent more than power from wet-cooled plants. A two-year study which analyzed the performance of existing dry-cooled systems and which developed economic and performance models for cost optimization of dry-cooled systems is reported. First, a design optimization code was used to compare the cost of a number of advanced all-dry systems. Then, 5 different dry/wet systems were carried through conceptual design and cost estimating. The results showed for either an all dry or a combination wet-and-dry cooling system, cost optimization can be achieved with an advanced system using ammonia as an intermediate heat exchange fluid (between the turbine and the dry tower), and that development of the ammonia concept should procede in order to provide performance and reliability data for the ammonia system. (LCL).

Download or read book Study of the comparative costs of five wet dry cooling tower concepts written by F. R. Zaloudek and published by . This book was released on 1976 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fossil Energy Update written by and published by . This book was released on 1976 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Wet dry Cooling Tower Concept Cross flow Tests written by Massachusetts Institute of Technology. Energy Laboratory and published by . This book was released on 1977 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: