The Modeling Performance And Optimal Control Of Commercial Absorption Chillers
DOWNLOAD
Download The Modeling Performance And Optimal Control Of Commercial Absorption Chillers PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get The Modeling Performance And Optimal Control Of Commercial Absorption Chillers book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
The Modeling Performance And Optimal Control Of Commercial Absorption Chillers
DOWNLOAD
Author : Eric Adam Koeppel
language : en
Publisher:
Release Date : 1994
The Modeling Performance And Optimal Control Of Commercial Absorption Chillers written by Eric Adam Koeppel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Dynamic Model For Small Capacity Ammonia Water Absorption Chiller
DOWNLOAD
Author : Vinodh Kumar Viswanathan
language : en
Publisher:
Release Date : 2013
Dynamic Model For Small Capacity Ammonia Water Absorption Chiller written by Vinodh Kumar Viswanathan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Air conditioning categories.
Optimization of the performance of absorption systems during transient operations such as start-up and shut-down is particularly important for small-capacity chillers and heat pumps to minimize lifecycle costs. Dynamic models in the literature have been used to study responses to step changes in a single parameter, but more complex processes such as system start-up have not been studied in detail. A robust system-level model for simulating the transient behavior of an absorption chiller is developed here. Individual heat and mass exchangers are modeled using detailed segmental models. The UA-values and thermal masses of heat exchangers used in the model are representative of a practical operational chiller. Thermal masses of the heat exchangers and energy storage in the heat exchanging fluids are accounted for to achieve realistic transient simulation of the heat transfer processes in the chiller. The pressure drop due to fluid flow across the heat exchangers is considered negligible in comparison to the pressure difference between the high- and low-side components (~ 1.5 MPa). In components with significant mass transfer effects, reduced-order models are employed to decrease computational costs while also maintaining accurate system response. Mass and species storage in the cycle are modeled using storage devices. The storage devices account for expansion and contraction of the refrigerant and solution in the cycle as the system goes through start-up, shut-down, and other transient events. A counterflow falling film desorber model is employed to account for the heat and mass transfer interactions between the liquid and vapor phases, inside the desorber. The liquid film flows down counter to the rising vapor, thereby exchanging heat with the counterflowing heated coupling fluid. A segmented model is used to account for these processes, and a solver is developed for performing rapid iteration and quick estimation of unknown vapor and liquid states at the outlet of each segment of the desorber. Other components such as the rectifier, expansion valves and solution pump are modeled as quasi-steady devices. System start-up is simulated from ambient conditions, and the coupling fluid temperatures are assumed to start up to their steady-state values within the first 90 s of simulation. It is observed that the system attains steady-state in approximately 550 s. The evaporator cooling duty and COP of the chiller during steady-state are observed to be 3.41 kW and 0.60, respectively. Steady-state parameters such as flow rates, heat transfer rates and concentrations are found to match closely with results from simulations using corresponding steady-state models. Several control responses are investigated using this dynamic simulation model. System responses to step changes in the desorber coupling fluid temperature and flow rate, solution pumping rate, and valve setting are used to study the effects of several control strategies on system behavior. Results from this analysis can be used to optimize start-up and steady state performances. The model can also be used for devising and testing control strategies in commercial applications.
Low Firing Temperature Absorption Chiller System
DOWNLOAD
Author : Kevin A. Goodheart
language : en
Publisher:
Release Date : 2000
Low Firing Temperature Absorption Chiller System written by Kevin A. Goodheart and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Soft Computing In Green And Renewable Energy Systems
DOWNLOAD
Author : Kasthurirangan Gopalakrishnan
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-08-20
Soft Computing In Green And Renewable Energy Systems written by Kasthurirangan Gopalakrishnan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-20 with Computers categories.
Soft Computing in Green and Renewable Energy Systems provides a practical introduction to the application of soft computing techniques and hybrid intelligent systems for designing, modeling, characterizing, optimizing, forecasting, and performance prediction of green and renewable energy systems. Research is proceeding at jet speed on renewable energy (energy derived from natural resources such as sunlight, wind, tides, rain, geothermal heat, biomass, hydrogen, etc.) as policy makers, researchers, economists, and world agencies have joined forces in finding alternative sustainable energy solutions to current critical environmental, economic, and social issues. The innovative models, environmentally benign processes, data analytics, etc. employed in renewable energy systems are computationally-intensive, non-linear and complex as well as involve a high degree of uncertainty. Soft computing technologies, such as fuzzy sets and systems, neural science and systems, evolutionary algorithms and genetic programming, and machine learning, are ideal in handling the noise, imprecision, and uncertainty in the data, and yet achieve robust, low-cost solutions. As a result, intelligent and soft computing paradigms are finding increasing applications in the study of renewable energy systems. Researchers, practitioners, undergraduate and graduate students engaged in the study of renewable energy systems will find this book very useful.
Energy Research Abstracts
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1985
Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Power resources categories.
Erda Energy Research Abstracts
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1985
Erda Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Power resources categories.
Energy
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1981
Energy written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Fuel categories.
Energy Audit Of Building Systems
DOWNLOAD
Author : Moncef Krarti
language : en
Publisher: CRC Press
Release Date : 2020-12-01
Energy Audit Of Building Systems written by Moncef Krarti and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-01 with Science categories.
Updated to include recent advances, this third edition presents strategies and analysis methods for conserving energy and reducing operating costs in residential and commercial buildings. The book explores the latest approaches to measuring and improving energy consumption levels, with calculation examples and Case Studies. It covers field testing, energy simulation, and retrofit analysis of existing buildings. It examines subsystems—such as lighting, heating, and cooling—and techniques needed for accurately evaluating them. Auditors, managers, and students of energy systems will find this book to be an invaluable resource for their work. Explores state-of-the-art techniques and technologies for reducing energy combustion in buildings. Presents the latest energy efficiency strategies and established methods for energy estimation. Provides calculation examples that outline the application of the methods described. Examines the major building subsystems: lighting, heating, and air-conditioning. Addresses large-scale retrofit analysis approaches for existing building stocks. Introduces the concept of energy productivity to account for the multiple benefits of energy efficiency for buildings. Includes Case Studies to give readers a realistic look at energy audits. Moncef Krarti has vast experience in designing, testing, and assessing innovative energy efficiency and renewable energy technologies applied to buildings. He graduated from the University of Colorado with both MS and PhD in Civil Engineering. Prof. Krarti directed several projects in designing energy-efficient buildings with integrated renewable energy systems. He has published over 3000 technical journals and handbook chapters in various fields related to energy efficiency, distribution generation, and demand-side management for the built environment. Moreover, he has published several books on building energy-efficient systems. Prof. Krarti is Fellow member to the American Society for Mechanical Engineers (ASME), the largest international professional society. He is the founding editor of the ASME Journal of Sustainable Buildings & Cities Equipment and Systems. Prof. Krarti has taught several different courses related to building energy systems for over 20 years in the United States and abroad. As a professor at the University of Colorado, Prof. Krarti has been managing the research activities of an energy management center at the school with an emphasis on testing and evaluating the performance of mechanical and electrical systems for residential and commercial buildings. He has also helped the development of similar energy efficiency centers in other countries, including Brazil, Mexico, and Tunisia. In addition, Prof. Krarti has extensive experience in promoting building energy technologies and policies overseas, including the establishment of energy research centers, the development of building energy codes, and the delivery of energy training programs in several countries.
Current Trends And Future Developments On Bio Membranes
DOWNLOAD
Author : Angelo Basile
language : en
Publisher: Elsevier
Release Date : 2020-03-05
Current Trends And Future Developments On Bio Membranes written by Angelo Basile and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-05 with Technology & Engineering categories.
Current Trends and Future Developments in (Bio-) Membranes: Cogeneration Systems and Membrane Technology offers an exhaustive overview of the status of cogeneration systems as they relate to advanced membrane technologies for energy savings. The different options for cogeneration are analyzed, both for large (district) and small (residential) size units, with different primary fuels. Energy efficiency is reported and lifecycle analysis is carried out for all different options. The book outlines strategies for engineering development and process intensification of interest to both industrial and developing countries. Finally, the book includes three chapters on lifecycle analysis (LCA) and economic analysis. Provides an overview of the interconnections between membrane technology and the systems used for the cogeneration of electricity, such as exhaust gas cleaning, carbon capture and sequestration, and low temperature fuel cells Includes two different studies on LCA and a case study on economic analysis Presents comprehensive reviews on various traditional cogeneration systems and compares them to alternative membrane-based technologies Covers membrane based technologies and their application in co-generation systems Addresses key issues on the introduction of process intensification in energy production
Solar Energy Update
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1984
Solar Energy Update written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Solar energy categories.