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Performance Degradation Of A Vapor Compression Refrigeration System Caused By Reduced Condenser Air Flow
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Book Synopsis Performance Degradation of a Vapor-compression Refrigeration System Caused by Reduced Condenser Air Flow by : Darrell H. Bultman
Download or read book Performance Degradation of a Vapor-compression Refrigeration System Caused by Reduced Condenser Air Flow written by Darrell H. Bultman and published by . This book was released on 1992 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the though that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemi nation. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 37 (thesis year 1992) a total of 12,549 thesis titles from 25 Canadian and 153 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 37 reports theses submitted in 1992, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Download or read book ASME Technical Papers written by and published by . This book was released on 1998 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1998 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Air Cooling in Steam Plant Condenser Using Refrigeration System for Improving Vacuum Pump Performance by : Abraham Engeda
Download or read book Air Cooling in Steam Plant Condenser Using Refrigeration System for Improving Vacuum Pump Performance written by Abraham Engeda and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modifying the steam plant condenser by incorporating a vapor compression refrigeration system, which is utilized to chill the water used for cooling the condenser air cooler, is proposed in this work. Hence a considerable drop in air temperature is obtained, and more steam associated with air is condensed resulting in reducing both steam lost and vacuum pump power. A thermodynamic analysis is developed for working out the performance of the proposed hybrid system. The results obtained using this analysis showed that for a condensate subcooling of 3¬∞C the total work saving due to this modification has maximums of 38.5, 33.9 and 28.9% and occur at temperature reduction below the condensate temperature of 12, 10, and 8¬∞C when the temperature of steam admitted to the condenser is 20, 30, and 40¬∞C, respectively. The savings in steam lost through the vacuum pump in these cases amount to 87.7, 84, and 79.2%, respectively. It is recommended to select the decrease in condenser air temperature in the range of 4¬∞C higher than those decreases, at which the minimum total work comes about, as the saving in steam lost becomes fairly greater (5,Äì7%), while the maximum increase in minimum total work is 3%.
Book Synopsis Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019) by : Zhaojun Wang
Download or read book Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019) written by Zhaojun Wang and published by Springer Nature. This book was released on 2020-03-19 with total page 931 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected papers from the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019), with a focus on HVAC techniques for improving indoor environment quality and the energy efficiency of heating and cooling systems. Presenting inspiration for implementing more efficient and safer HVAC systems, the book is a valuable resource for academic researchers, engineers in industry, and government regulators.
Book Synopsis Masters Theses in the Pure and Applied Sciences by : W. H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Springer Science & Business Media. This book was released on 1994 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 37 (thesis year 1992) reports a total of 12,549 thesis titles from 25 Canadian and 153 US universities (theses submitted in previous years but only now reported are indicated by the thesis year shown in parenthesis). The organization, like that of past years, consists of thesis titles arrange
Book Synopsis Reduced Condensing Pressure Operation in Industrial Ammonia Refrigeration Systems by : Marcus H. Wilcox
Download or read book Reduced Condensing Pressure Operation in Industrial Ammonia Refrigeration Systems written by Marcus H. Wilcox and published by . This book was released on 1989 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer model was created using compressor and condenser performance data to simulate vapor-compression ammonia refrigeration system performance under various operating conditions and strategies. The model was used to estimate energy, demand, and cost savings resulting from reduced condensing pressures. Two ammonia refrigeration systems were selected for the investigation into reduced condensing pressure operation. Each refrigeration system was monitored under two modes of operation: high (fixed-head) and reduced (floating-head) condensing pressure. Compressor and condenser fan power, condensing pressure, and ambient dry and wet-bulb temperatures were recorded for a one week period. During the fixed-head period, the condensing pressure was maintained at 145 to 155 psig, which is typical for industry. The condenser fan controls were adjusted for the floating-head period, reducing the average condensing pressures to 117 to 130 psig. Reductions of 9.8% to 11.7% in combined compressor and condenser fan power were observed during the floating-head operation. In addition, none of the potential problems associated with floating-head operation were observed. The model was used to simulate refrigeration system performance during the monitoring periods, using weather data and estimated refrigeration loads as model input. Model predictions were compared with the monitored data to validate the model performance. The model was used to predict monthly and annual energy, peak-demand, and operating costs for a range of condensing pressures. Monthly dry and wet-bulb temperature profiles, and estimates of refrigeration loads were used as input for the model. The model predicted: Annual energy savings of 10.6% to 12.0%, corresponding to 0.63% to 0.83% savings per degree reduction in average condensing temperature. Average monthly peak demand savings of 8.7% to 9.2%, corresponding to 0.53% to 0.64% savings per degree reduction in average condensing temperature. Average annual cost savings of 10.4% to 11.9%, corresponding to 0.62% to 0.82% savings per degree reduction in average condensing temperature. The possibility of minimum condensing pressures, below which the condenser fan operating costs outweigh compressor savings. A significant portion of the possible energy savings (79% to 93%) with no additional equipment or capital cost.
Book Synopsis REFRIGERATION AND AIR CONDITIONING by : S. N. SAPALI
Download or read book REFRIGERATION AND AIR CONDITIONING written by S. N. SAPALI and published by PHI Learning Pvt. Ltd.. This book was released on 2013-11-13 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is designed for a first course in Refrigeration and Air Conditioning. The subject matter has been developed in a logical and coherent manner with neat illustrations and a fairly large number of solved examples and unsolved problems. The text, developed from the author’s teaching experience of many years, is suitable for the senior-level undergraduate and first-year postgraduate students of mechanical engineering, automobile engineering as well as chemical engineering. The text commences with an introduction to the fundamentals of thermo-dynamics and a brief treatment of the various methods of refrigeration. Then follows the detailed discussion and analysis of air refrigeration systems, vapour compression and vapour absorption refrigeration systems with special emphasis on developing sound physical concepts and gaining problem solving skills. Refrigerants are exhaustively dealt with in a separate chapter. The remainder chapters of the book deal with psychrometry and various processes required for the analysis of air conditioning systems. Technical descriptions of compressors, evaporators, condensers, expansion devices and ducts are provided along with design practices for cooling and heating load calculations. The basic principles of cryogenic systems and applications of cryogenic gases and air liquefaction systems have also been dealt with. The Second Edition incorporates: (a) New sections on vortex tube, solar refrigeration and magnetic refrigeration, in Chapter 2. (b) Additional solved examples on vapour compression refrigeration system using the R134a refrigerant, in Chapter 4. (c) New sections on duct arrangement systems and air distribution systems, in Chapter 15. (d) A new Chapter 17 on Food Preservation.
Book Synopsis Advances in Fluid and Thermal Engineering by : Basant Singh Sikarwar
Download or read book Advances in Fluid and Thermal Engineering written by Basant Singh Sikarwar and published by Springer Nature. This book was released on 2023-07-11 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the select proceedings of the 3rd Biennial International Conference on Future Learning Aspects of Mechanical Engineering (FLAME-2022). It aims to provide a comprehensive and broad-spectrum picture of state-of-the-art research and development in thermal and fluid engineering. Various topics covered include flow analysis, thermal systems, flow instability, renewable energy, hydel and wind power systems, heat transfer augmentation, biomimetic/ bioinspired engineering, heat pipes, heat pumps, multiphase flow/ heat transfer, energy conversion, thermal hydraulics of nuclear systems, refrigeration, and HVAC systems, computational fluid dynamics, fluid-structure interaction, etc. This volume will prove a valuable resource for those in academia and industry.
Book Synopsis Vapor Compression Heat Pumps with Refrigerant Mixtures by : Reinhard Radermacher
Download or read book Vapor Compression Heat Pumps with Refrigerant Mixtures written by Reinhard Radermacher and published by CRC Press. This book was released on 2005-06-23 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amidst tightening requirements for eliminating CFC's, HCFC's, halons, and HFC's from use in air conditioning and heat pumps, the search began for replacements that are environmentally benign, non-flammable, and similar to the banned refrigerants in system-level behavior. Refrigerant mixtures are increasingly used as working fluids because they demo
Book Synopsis Advances in Mechanical Engineering and Technology by : Ranganath M. Singari
Download or read book Advances in Mechanical Engineering and Technology written by Ranganath M. Singari and published by Springer Nature. This book was released on 2022-03-22 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the International Conference on Advanced Production and Industrial Engineering (ICAPIE) - 2021 held at Delhi Technological University, Delhi, during June 18–19, 2021. The book covers the recent advances and challenges in the area of production and industrial engineering. Various topics covered include artificial intelligence and expert systems, CAD/CAM Integration Technology, CAD/CAM, automation and robotics, computer-aided geometric design and simulation, construction machinery and equipment, design tools, cutting tool material and coatings, dynamic mechanical analysis, optimization and control, energy machinery and equipment, flexible manufacturing technology and system, fluid dynamics, bio-fuels, fuel cells, high-speed/precision machining, laser processing technology, logistics and supply chain management, machinability of materials, composite materials, material engineering, mechanical dynamics and its applications, mechanical power engineering, mechanical transmission theory and applications, non-traditional machining processes, operations management, precision manufacturing and measurement, precision manufacturing and measurement, reverse engineering and structural strength and robustness. This book is useful for various researcher mainly mechanical and allied engineering discipline.
Book Synopsis Refrigeration Systems and Applications by : Ibrahim Din¿er
Download or read book Refrigeration Systems and Applications written by Ibrahim Din¿er and published by John Wiley & Sons. This book was released on 2017-03-23 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive text/reference for students, researchers and practicing engineers This book provides comprehensive coverage on refrigeration systems and applications, ranging from the fundamental principles of thermodynamics to food cooling applications for a wide range of sectoral utilizations. Energy and exergy analyses as well as performance assessments through energy and exergy efficiencies and energetic and exergetic coefficients of performance are explored, and numerous analysis techniques, models, correlations and procedures are introduced with examples and case studies. There are specific sections allocated to environmental impact assessment and sustainable development studies. Also featured are discussions of important recent developments in the field, including those stemming from the author’s pioneering research. Refrigeration is a uniquely positioned multi-disciplinary field encompassing mechanical, chemical, industrial and food engineering, as well as chemistry. Its wide-ranging applications mean that the industry plays a key role in national and international economies. And it continues to be an area of active research, much of it focusing on making the technology as environmentally friendly and sustainable as possible without compromising cost efficiency and effectiveness. This substantially updated and revised edition of the classic text/reference now features two new chapters devoted to renewable-energy-based integrated refrigeration systems and environmental impact/sustainability assessment. All examples and chapter-end problems have been updated as have conversion factors and the thermophysical properties of an array of materials. Provides a solid foundation in the fundamental principles and the practical applications of refrigeration technologies Examines fundamental aspects of thermodynamics, refrigerants, as well as energy and exergy analyses and energy and exergy based performance assessment criteria and approaches Introduces environmental impact assessment methods and sustainability evaluation of refrigeration systems and applications Covers basic and advanced (and hence integrated) refrigeration cycles and systems, as well as a range of novel applications Discusses crucial industrial, technical and operational problems, as well as new performance improvement techniques and tools for better design and analysis Features clear explanations, numerous chapter-end problems and worked-out examples Refrigeration Systems and Applications, Third Edition is an indispensable working resource for researchers and practitioners in the areas of Refrigeration and Air Conditioning. It is also an ideal textbook for graduate and senior undergraduate students in mechanical, chemical, biochemical, industrial and food engineering disciplines.
Book Synopsis Single- and Multiple-stage Cascaded Vapor Compression Refrigeration for Electronics Cooling by : Charles Lee Coggins
Download or read book Single- and Multiple-stage Cascaded Vapor Compression Refrigeration for Electronics Cooling written by Charles Lee Coggins and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Technology Roadmap for Semiconductors (ITRS) predicts that microprocessor power consumption will continue to increase in the foreseeable future. It is also well known that microprocessor performance can be improved by lowering the junction temperature: recent analytical studies show that for a power limited chip, there is a non-linear scaling effect that offers a 4.3x performance enhancement at -100 °C, compared to 85 °C operation. Vapor Compression Refrigeration (VCR) is a sufficiently compact, low cost, and power efficient technology for reducing the junction temperature of microprocessors below ambient, while removing very high heat fluxes via phase change. The current study includes a scaling analysis of single- and multiple-stage VCR systems for electronics cooling and an experimental investigation of small-scale, two-stage cascaded VCR systems. In the scaling analysis, a method for estimating the size of single- and multiple-stage VCR systems is described, and the resulting trends are presented. The compressor and air-cooled condenser are shown to be by far the largest components of the system, dwarfing the evaporator, expansion device, and inter-stage heat exchanger. For systems utilizing off-the-shelf components and removing up to 200 W at evaporator temperatures as low as 173 K, compressor size dominates the system and scales with the compressor's motor. The air-cooled condenser is the second largest component, and its size is constrained by the air-side heat transfer coefficient. In the experimental work, a two-stage cascaded VCR system with a total volume of 60000 cm3 is demonstrated that can remove 40 W at -61 °C.
Book Synopsis Heat Pump Operation, Installation, Service by : Randy F. Petit, Sr.
Download or read book Heat Pump Operation, Installation, Service written by Randy F. Petit, Sr. and published by ESCO Press. This book was released on 2011-05-01 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This program is designed to provide students and technicians with a comprehensive overview of the heat pump system, its operation, and principles. Heat Pumps; Operation, Installation, and Service is designed to provide the reader with a comprehensive overview of heat pump systems. The manual covers basic principles of operation, system components, air flow, defrost methods, balance point, auxiliary electric heat, electrical control wiring, refrigerant piping, installation, refrigerant charging, troubleshooting, dual fuel systems, and an introduction to geothermal systems. The intent of the book is to offer students and technicians information to build upon, in order to enhance their knowledge of the air conditioning and heating field, and more specifically, heat pumps. Before installing or servicing a heat pump system, the technician must have proper training and knowledge of air conditioning/refrigeration theory, principles and operation. With today's energy demands and costs soaring, there is a tremendous need for highly efficient equipment. These systems pose new demands for installers and service technicians. New heat pump systems with single, dual, and variable capacity are being sold which requires trained technicians with the ability to install, service, and maintain this equipment.
Book Synopsis Progress in Exergy, Energy, and the Environment by : Ibrahim Dincer
Download or read book Progress in Exergy, Energy, and the Environment written by Ibrahim Dincer and published by Springer. This book was released on 2014-06-17 with total page 1055 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thorough and highly relevant volume examines exergy, energy and the environment in the context of energy systems and applications and as a potential tool for design, analysis, optimization. It further considers their role in minimizing and/or eliminating environmental impacts and providing for sustainable development. In this regard, several key topics ranging from the basics of the thermodynamic concepts to advanced exergy analysis techniques in a wide range of applications are covered.
Download or read book The SAE Journal written by and published by . This book was released on 1958 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 30-54 (1932-46) issued in 2 separately paged sections: General editorial section and a Transactions section. Beginning in 1947, the Transactions section is continued as SAE quarterly transactions.
