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Author: Muhammad Ahmad
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
Rising global temperature has triggered the cooling demand in the last three decades with growing predictions for the future. The use of conventional energy-intensive and high global warming chemical-based cooling systems is working in a loop, increasing the global warming rate, emissions, and cooling system inventory. Therefore, the development of an innovative cooling system with high energy efficiency, low monetary cost, and environmentally sustainable. The indirect evaporative cooling-based systems have shown potential to serve the purpose because of low energy consumption, absence of energy, and cost-intensive equipment like compressors and water-based operation. A novel indirect evaporative cooler based on an innovative operational configuration is proposed, fabricated, and tested experimentally. The Proposed system has several advancements compared to the conventional indirect evaporative coolers like high operational reliability, low maintenance, and better control of the processes in the system. The study shows that the proposed system can achieve a temperature drop of as high as 14°C. The maximum cooling capacity of the system is calculated as 110 W, and the cooling performance index of 28. The performance of the cooler improves with increasing outdoor air temperature which makes it suitable for diverse climatic conditions. Moreover, the proposed design offers several benefits due to novel operational configurations by addressing limitations in the earlier systems.
Author: Muhammad Ahmad
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
Rising global temperature has triggered the cooling demand in the last three decades with growing predictions for the future. The use of conventional energy-intensive and high global warming chemical-based cooling systems is working in a loop, increasing the global warming rate, emissions, and cooling system inventory. Therefore, the development of an innovative cooling system with high energy efficiency, low monetary cost, and environmentally sustainable. The indirect evaporative cooling-based systems have shown potential to serve the purpose because of low energy consumption, absence of energy, and cost-intensive equipment like compressors and water-based operation. A novel indirect evaporative cooler based on an innovative operational configuration is proposed, fabricated, and tested experimentally. The Proposed system has several advancements compared to the conventional indirect evaporative coolers like high operational reliability, low maintenance, and better control of the processes in the system. The study shows that the proposed system can achieve a temperature drop of as high as 14°C. The maximum cooling capacity of the system is calculated as 110 W, and the cooling performance index of 28. The performance of the cooler improves with increasing outdoor air temperature which makes it suitable for diverse climatic conditions. Moreover, the proposed design offers several benefits due to novel operational configurations by addressing limitations in the earlier systems.
Author: John R. Watt
Publisher: Prentice Hall
ISBN:
Category : House & Home
Languages : en
Pages : 536
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Book Description
"Providing guidance to design engineers and contractors, this book illustrates in full detail how operational savings of 50 to 75 percent can be achieved with evaporative cooling technologies compared to equivalent electric-based systems. Thorough in scope, the book addresses the technical aspects of evaporative cooling, as well as a broad range of specific commercial and industrial applications. Topics include cost analysis, technology and equipment options, application guidelines, and operational and performance characteristics. The third edition adds a new chapter which shows how evaporative cooling can be integrated into large-scale HVAC systems, with discussions of achievable savings, maintenance costs, cooling tower and finned coil indirect cooling, wet bulb economizers, precooling condensed air, makeup air and return air, humidity control, and more, including sample calculations as well as demonstration and engineering data."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved
Author: Jie Lin
Publisher: Springer Nature
ISBN: 3031307585
Category : Science
Languages : en
Pages : 126
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Book Description
This book systematically discusses state-of-the-art dew-point evaporative cooling and provides key insights into current research efforts and future research interests. Novel energy-efficient and environment-friendly cooling technologies are essential to reduce the sharply rising energy consumption and greenhouse gas emissions and achieve carbon neutrality. Conventional air-conditioners which adopt a vapor compression cycle are neither energy-efficient nor sustainable due to the use of compressors and chemical refrigerants, as well as their intrinsic coupling of sensible and latent cooling loads. With the merits of high energy efficiency and the ability to decouple cooling loads without using chemical refrigerants, indirect dew-point evaporative cooling provides an ideal alternative solution to air conditioning in a variety of applications. A comprehensive review of evaporative cooling and their underlying engineering challenges is included. Advanced engineering and modeling experience critical to the development of dew-point evaporative coolers are highlighted. The effective analysis techniques for dew-point evaporative coolers are documented, and their intrinsic characteristics captured by these methods are reported. Lastly, advanced dew-point evaporative cooling systems in various energy-connected applications are discussed by providing multiple case studies. Specifically targeted at HVAC engineers, thermal scientists, and energy-engineering researchers, this book will balance fundamental concepts, industrial applications, and leading-edge research. As this book provides readers with depth and breadth of coverage, it can also be used by graduate-level students in relevant fields.
Author: Mu azu Musa
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The technology and applications of evaporative cooling to provide human comfort in buildings is not new and has been used in different places based on different methods and materials. Conventional air conditioning systems overshadowed the application of evaporative cooling for buildings despite their ozone layer depletion. Evaporative cooling using porous ceramic evaporators were experimentally investigated. Encouraging results in terms of temperature reduction and cooling effectiveness were reported. In this work also thermoelectric unit was integrated in to the evaporative cooling system containing porous ceramic evaporators. The warm inlet air cooled in the evaporative cooling chamber was passed over the hot-side fins of the thermoelectric cooling device to act as a better heat sink. Typical test results showed that the cold side temperature of thermoelectric unit was 5Deg. C lower and the hot side was 10Deg. Clower, respectively when operated on the wet and dry porous ceramics evaporative cooling chamber. Direct evaporative cooling is often associated with the rise in relative humidity which may result in uncomfortable feeling due to unwanted increase in moisture. Indirect evaporative cooling offers a solution but still requires improvements in the effectiveness. There is also need for using cheap and readily available materials for the construction, requiring simple fabrication technology without very complex engineering infrastructure. Most widely used common fibrous materials have very limited capillary effect. So a periodic water spray system with an automatic control is required for running the cooler which adds to the power consumption, rise in operation costs as well as construction and operational difficulties. As a compromise using horizontal arrangement was considered. Use of pump for supplying water required to moisten the evaporative cooling surface was eliminated. The system was constructed and tested under varying temperature, relative humidity and air flow rates. Results showed significant temperature reduction accompanied with acceptable increase in relative humidity. Temperature drop of 6-10Deg. C between the inlet and outlet temperatures of the product or supply air was recorded. Increase in relative humidity of the supply air was 6 - 10% less than the working air. Application of this novel system was demonstrated in the parasol self-cooling arrangement. The fibre tube vaporative cooler has the potential of cooling a building space to the acceptable comfort limits. The application of porous ceramics for building space cooling, integrating the system to be used as a heat sink and the use of horizontal fibre tubes for evaporative cooling are all novel ideas in this field of research. Other novel features also include the ability to minimise energy consumption by eliminating common methods of continuous water circulation.
Author: Muhammad Amjad
Publisher: Frontiers Media SA
ISBN: 2832551653
Category : Technology & Engineering
Languages : en
Pages : 141
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Book Description
With increasing apprehensions over global warming and environmental issues, the need to develop renewable energy is becoming more critical to secure our future energy needs. Solar energy is the most abundant source of energy and is easily accessible. However, making efficient use of solar energy is not an easy task. Energy materials, especially in their micro and nanoscale, have an excellent potential for absorbing, transferring and storing solar energy when they are dispersed in an aqueous medium. The increased surface area to volume ratio of energy materials at nanoscale exhibits extraordinary characteristics. Various applications relevant to heat transfer, energy conversion, and storage have increasingly used nanoparticles due to their ability to absorb, store, and carry heat. However, successful deployment of materials in energy harvesting and storage applications must also consider some of the very fundamental challenges, including but not limited to sedimentation, entrainment, stability, and life of these potential energy materials. Additionally, there are novel applications of newly developed specialized materials in solar energy capture, transport and storage. This topic is to circumscribe all challenges, innovative applications and numerical studies in materials for energy capture, transfer, and storage to have a safe future in terms of solar energy utilization.
Author: Francesco Calise
Publisher: Academic Press
ISBN: 0128206268
Category : Technology & Engineering
Languages : en
Pages : 453
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Book Description
The support for polygeneration lies in the possibility of integrating different technologies into a single energy system, to maximize the utilization of both fossil and renewable fuels. A system that delivers multiple forms of energy to users, maximizing the overall efficiency makes polygeneration an emerging and viable option for energy consuming industries. Polygeneration Systems: Design, Processes and Technologies provides simple and advanced calculation techniques to evaluate energy, environmental and economic performance of polygeneration systems under analysis. With specific design guidelines for each type of polygeneration system and experimental performance data, referred both to single components and overall systems, this title covers all aspects of polygeneration from design to operation, optimization and practical implementation. Giving different aspects of both fossil and non-fossil fuel based polygeneration and the wider area of polygeneration processes, this book helps readers learn general principles to specific system design and development through analysis of case studies, examples, simulation characteristics and thermodynamic and economic data. - Detailed economic data for technology to assist developing feasibility studies regarding the possible application of polygeneration technologies - Offers a comprehensive list of all current numerical and experimental results of polygeneration available - Includes simulation models, cost figures, demonstration projects and test standards for designers and researchers to validate their own models and/or to test the reliability of their results
Author: Shan K. Wang
Publisher: McGraw Hill Professional
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 1430
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Book Description
* A broad range of disciplines--energy conservation and air quality issues, construction and design, and the manufacture of temperature-sensitive products and materials--is covered in this comprehensive handbook * Provide essential, up-to-date HVAC data, codes, standards, and guidelines, all conveniently located in one volume * A definitive reference source on the design, selection and operation of A/C and refrigeration systems
Author: Traci L. Hedrick
Publisher: Elsevier
ISBN: 9780323849005
Category : Medical
Languages : en
Pages : 240
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Book Description
In this issue of Surgical Oncology Clinics, guest editor Dr. Traci L. Hedrick brings her considerable expertise to the topic of Colorectal Cancer. Excluding skin cancers, colorectal cancer remains the third most common cancer diagnosed in both men and women in the United States. In this issue, top experts in the field provide current discussions on surgery of rectal cancer, colon cancer, targeted therapies, technological advances, genetics of colorectal cancer, and health disparities. Contains 12 relevant, practice-oriented topics including preoperative staging and evaluation of colorectal cancer; technological advances in the surgical treatment of colorectal cancer; surgical principles of rectal cancer; targeted therapy for colorectal cancer; surgical principles of colon cancer; molecular genetics of colorectal cancer/hereditary colorectal cancer syndromes; and more. Provides in-depth clinical reviews on colorectal cancer, offering actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.
Author: Chua Kian Jon
Publisher: Springer Nature
ISBN: 981158477X
Category : Technology & Engineering
Languages : en
Pages : 313
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Book Description
This book highlights key recent developments in air conditioning technologies for cooling and dehumidification with the specific objectives to improve energy efficiency and to minimize environmental impact. Today, air conditioning, comprising cooling and dehumidification, is a necessity in commercial and residential buildings and even in many industrial processes. This book provides key update on recent developments in air conditioning systems, cooling cycles and innovative cooling/dehumidification technologies. Key technologies related to cooling include heat-driven absorption and adsorption cooling and water-based dew point evaporative cooling. Technologies connected with dehumidification involve new generations of adsorbent–desiccant dehumidifiers, liquid-based desiccants and membranes that sieve out water vapor from air. Losses in cooling cycles and thermo-economic analysis for a sustainable economy are also judiciously documented.
Author: S. M. Sohel Murshed
Publisher: BoD – Books on Demand
ISBN: 1789848385
Category : Science
Languages : en
Pages : 154
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Book Description
Since conventional cooling techniques are increasing falling short of meeting the ever-growing cooling demands of high heat generating devices, thermal systems, and processes, advanced and innovative cooling technologies are of immense importance to deal with such high thermal management. Hence, this book covers a number of key topics related to advanced cooling approaches, their performance, and applications, including: Evaporative air cooling; Spray impingement cooling; Heat pump-based cooling; Modular cooling for photovoltaic plant; Nucleate pool boiling of refrigerants; Transient flashing spray cooling and application; Compressor cooling systems for industry. The book is aimed at a wide variety of people from graduate students and researchers to manufacturers who are involved or interested in the areas of thermal management systems, cooling technologies, and their applications.
