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Desiccant Dehumidification Analysis
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Book Synopsis Advances in Desiccant Dehumidification by : Vivekh Prabakaran
Download or read book Advances in Desiccant Dehumidification written by Vivekh Prabakaran and published by Springer Nature. This book was released on 2021-07-21 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically analyses state-of-the-art technology and research related to desiccant dehumidification. It provides key insights into the current research direction, and presents global research and development interests. It begins by offering a comprehensive review of conventional desiccants and their underlying engineering challenges. Fundamental material characteristic properties and factors critical to the desiccant synthesis are highlighted. The applicability of next-generation advanced materials to address the challenges is documented, and the advantages of desiccant coated heat exchangers are evaluated. Lastly, the potential applications of desiccant dehumidifiers in various energy-connected applications are discussed, and case studies on industrial/building cooling systems are provided. Specifically targeted at HVAC engineers, thermal scientists, energy-engineering researchers, and graduate-level students in the field, the technical content balances fundamental concepts and applications.
Book Synopsis Desiccant Dehumidification Analysis by : Hai-Yun Helen Xing
Download or read book Desiccant Dehumidification Analysis written by Hai-Yun Helen Xing and published by . This book was released on 2000 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Desiccant dehumidification has been given increasing interest in the air conditioning industry. Compared with conventional vapor compression air conditioning systems, desiccant dehumidification saves energy by separating humidity control from temperature control and also improves the indoor air quality as a good filter. This research explores the potential of applying desiccant dehumidification systems in buildings with less energy consumption. As the first step, the adsorption mechanism is explored and desiccant material properties are obtained based on a literature review. The heat and mass transfer in the desiccant - moist air system is well understood and modeled using both pseudo-gas-side controlled (PGC) transfer coefficients and semi-infinite transfer coefficients. Compared with experimental data, the model well predicts single processes while the prediction for cyclic processes is acceptable for practical applications. This model provides a useful tool for two purposes: analysis of desiccant unit 's performances and optimization of the design and operations of a unit. Based on the semi-infinite body theory, the semi-infinite model provides a way to simplify the solid-side diffusion resistance. A temperature control strategy is proposed to improve the mass transfer efficiency. A design in which the desiccant temperature is controlled in sections is tested using the model developed before. Simulations show that temperature control enhances mass transfer. Using the model, parametric analysis is conducted on a temperature-control led packed-bed desiccant unit. The effects on dehumidification performances of processing air mass flow rate, regeneration temperature and cycle time are studied. Parametric analysis gains insight into the correlations and interactions between different operation parameters. Three criteria are put forward to evaluate the performances of a desiccant dehumidification system for building applications: adsorption rate, average outlet air parameters and energy consumption. A systematic way is proposed to size a desiccant unit and optimize its operations by using the model developed before. In a case study a desiccant unit is designed for a two-people room in Shanghai for ventilation purposes and the unit's operations are optimized. The design results show that desiccant dehumidification can be used in building applications, provided appropriate operation parameters are adopted. The yearly operations of a desiccant dehumidification system are proposed.
Book Synopsis Performance Analysis of Liquid Desiccant Dehumidification System by : Tin Yuet Yau
Download or read book Performance Analysis of Liquid Desiccant Dehumidification System written by Tin Yuet Yau and published by . This book was released on 2014 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rotary Solid Desiccant Dehumidifiers by : Kenneth John Schultz
Download or read book Rotary Solid Desiccant Dehumidifiers written by Kenneth John Schultz and published by . This book was released on 1987 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Solid Desiccant Rotary Dehumidifiers by : Eric Van Den Bulck
Download or read book Analysis of Solid Desiccant Rotary Dehumidifiers written by Eric Van Den Bulck and published by . This book was released on 1983 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mathematical Model and Performance Analysis of a Liquid Desiccant Dehumidification Tower by : Mark Alan Long
Download or read book Mathematical Model and Performance Analysis of a Liquid Desiccant Dehumidification Tower written by Mark Alan Long and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A finite difference model simulating a liquid desiccant dehumidification tower with lithium chloride as the desiccant solution has been developed. The model determines the packing height needed for a condensation rate. Comparisons with experimental data illustrates that the model produces valid results. Air and desiccant solution temperatures within the dehumidification tower show that a temperature increase is experienced for both the air and desiccant solution from their respective entrances and exits from the tower. Increasing the air mass velocity or the amount of moisture removed from the air supply causes an increase in packing height. Increasing the desiccant mass velocity decreases the packing height.
Book Synopsis Desiccant Dehumidification and Cooling Systems Assessment and Analysis by : R. K. Collier (Jr.)
Download or read book Desiccant Dehumidification and Cooling Systems Assessment and Analysis written by R. K. Collier (Jr.) and published by . This book was released on 1997 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Desiccant Heating, Ventilating, and Air-Conditioning Systems by : Napoleon Enteria
Download or read book Desiccant Heating, Ventilating, and Air-Conditioning Systems written by Napoleon Enteria and published by Springer. This book was released on 2016-12-27 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the necessary fundamental knowledge in the research, development, design, selection, and application of desiccant heating, ventilating, and air-conditioning systems. It covers the established installations in different climatic conditions and building types. In addition, advanced performance evaluation techniques are presented, covering thermodynamic, economic, and environmental aspects. Hence, the book is an important resource for undergraduate and graduate students, design and installation engineers, researchers and scientists, building owners and occupants, and energy and environmental policy makers.
Author :Carlos Eduardo Leme Nóbrega Publisher :Springer Science & Business Media ISBN 13 :1447155653 Total Pages :281 pages Book Rating :4.4/5 (471 download)
Book Synopsis Desiccant-Assisted Cooling by : Carlos Eduardo Leme Nóbrega
Download or read book Desiccant-Assisted Cooling written by Carlos Eduardo Leme Nóbrega and published by Springer Science & Business Media. This book was released on 2013-11-19 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing concern with indoor air quality has led to air-quality standards with increased ventilation rates. Although increasing the volume flow rate of outside air is advisable from the perspective of air-quality, it is detrimental to energy consumption, since the outside air has to be brought to the comfort condition before it is insufflated to the conditioned ambient. Moreover, the humidity load carried within outside air has challenging HVAC engineers to design cooling units which are able to satisfactorily handle both sensible and latent contributions to the thermal load. This constitutes a favorable scenario for the use of solid desiccants to assist the cooling units. In fact, desiccant wheels have been increasingly applied by HVAC designers, allowing distinct processes for the air cooling and dehumidification. In fact, the ability of solid desiccants in moisture removal is effective enough to allow the use of evaporative coolers, in opposition to the traditional vapor-compression cycle, resulting in an ecologically sound system which uses only water as the refrigerant. Desiccant Assisted Cooling: Fundamentals and Applications presents different approaches to the mathematical modeling and simulation of desiccant wheels, as well as applications in thermal comfort and humidity controlled environments. Experts in the field discuss topics from enthalpy, lumped models for heat and mass transfer, and desiccant assisted radiant cooling systems, among others. Aimed at air-conditioning engineers and thermal engineering researchers, this book can also be used by graduate level students and lecturers in the field.
Book Synopsis Heat and Mass Transfer Analysis of a Desiccant Dehumidifier Matrix by : Ahmad A. Pesaran
Download or read book Heat and Mass Transfer Analysis of a Desiccant Dehumidifier Matrix written by Ahmad A. Pesaran and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the SERI Single-Blow Test Facility's design, fabrication, and testing for characterizing desiccant dehumidifiers for solar cooling applications.
Book Synopsis Theoretical, Computational, and Experimental Solutions to Thermo-Fluid Systems by : Muthukumar Palanisamy
Download or read book Theoretical, Computational, and Experimental Solutions to Thermo-Fluid Systems written by Muthukumar Palanisamy and published by Springer Nature. This book was released on 2021-03-09 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents select proceedings of the International Conference on Innovations in Thermo-Fluid Engineering and Sciences (ICITFES 2020). It covers topics in theoretical and experimental fluid dynamics, numerical methods in heat transfer and fluid mechanics, different modes of heat transfer, multiphase flow, fluid machinery, fluid power, refrigeration and air conditioning, and cryogenics. The book will be helpful to the researchers, scientists, and professionals working in the field of fluid mechanics and machinery, and thermal engineering.
Book Synopsis An Analysis of a Liquid Desiccant Dehumidifier Regenerated with Waste Or Solar Power by : Robert George Vorthman
Download or read book An Analysis of a Liquid Desiccant Dehumidifier Regenerated with Waste Or Solar Power written by Robert George Vorthman and published by . This book was released on 1977 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparative Analysis of Vapor Compression and Hybrid Liquid Desiccant Dehumidification Systems by : A. M. Al-Jaafari
Download or read book Comparative Analysis of Vapor Compression and Hybrid Liquid Desiccant Dehumidification Systems written by A. M. Al-Jaafari and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: The objective of this study was to evaluate the energy savings of a commercially available hybrid liquid desiccant (HLD) cooling system relative to a conventional vapor compression system used for an existing school building where 100% outside air is used for ventilation. Psychrometric analysis and hour-by-hour simulations for three energy models were developed for three cities in the United States using available weather data assuming normal operation and typical building occupancy. Energy calculation software such as the Carrier Hourly Analysis Program (HAP 4.1) and Desicalc along with generated spreadsheets was used to compute the energy consumption for the models under study. Results of each model are summarized and comparisons are made. The annual energy savings employing the HLD system were found to reach 46% for Chicago, 37% for Gainesville and 32% for Miami. Simple cost analysis and associated payback periods were also performed.
Book Synopsis Mathematical Model and Performance Analysis of a Liquid Desiccant Dehumidification Tower by :
Download or read book Mathematical Model and Performance Analysis of a Liquid Desiccant Dehumidification Tower written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A finite difference model simulating a liquid desiccant dehumidification tower with lithium chloride as the desiccant solution has been developed. The model determines the packing height needed for a condensation rate. Comparisons with experimental data illustrates that the model produces valid results. Air and desiccant solution temperatures within the dehumidification tower show that a temperature increase is experienced for both the air and desiccant solution from their respective entrances and exits from the tower. Increasing the air mass velocity or the amount of moisture removed from the air supply causes an increase in packing height. Increasing the desiccant mass velocity decreases the packing height.
Book Synopsis A Computational Fluid Dynamics Analysis of a Liquid-desiccant Dehumidification System by : Octavian Mihai Dumitrescu
Download or read book A Computational Fluid Dynamics Analysis of a Liquid-desiccant Dehumidification System written by Octavian Mihai Dumitrescu and published by . This book was released on 2004 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of a Counterflow Indirect Evaporative Cooling and Liquid Desiccant Dehumidification System by : Mohammad Rifat Ullah
Download or read book Analysis of a Counterflow Indirect Evaporative Cooling and Liquid Desiccant Dehumidification System written by Mohammad Rifat Ullah and published by . This book was released on 1986 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Predictions of Silica-gel Desiccant Dehumidifiers. Technical Report by :
Download or read book Performance Predictions of Silica-gel Desiccant Dehumidifiers. Technical Report written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of a cross-cooled desiccant dehumidifier using silica gel in the form of sheets is described. This unit is the principal component of solar powered desiccant air conditioning system. The mathematical model has first been formulated describing the dynamics of the dehumidifier. The model leads to a system of nonlinear coupled heat and mass transfer equations for the sorption processes and linear heat transfer equations for the purging processes. The model accounts for the gas film resistance and for the moisture diffusion in the desiccant. The governing equations are solved by a finite difference scheme to obtain periodic steady state solutions. The accuracy of the theoretical predictions is ascertained by comparing them with the experimental results. The performance of the dehumidifier, for a chosen set of initial conditions and dehumidifier parameters, has also been given.
