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Simulation Of Performance Of Air Conditioning System
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Book Synopsis Simulation of Performance of Air Conditioning System by : Mohamad Hushairy Abdul Jalil
Download or read book Simulation of Performance of Air Conditioning System written by Mohamad Hushairy Abdul Jalil and published by . This book was released on 2012 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis represents the simulation of performance of air conditioning system in the vehicle. The objective of this thesis is to analyze the relationship of performance of a car air-conditioning system and with variable speed of the compressor. The thesis describes the fundamental of air-conditioning system, the way the system works and brief explanation of each component involved in air conditioning system. The simulation was done using Matlab Software to obtain the important parameters and data. The COP indicate the performance drop due to higher speed of the compressor. The speed of compressor affects the displacement volume of the refrigerant than affected the mass flow rate of the refrigerant and remain constant. Thus the cause of the mass flow rate make the cooling capacity slightly decrease when the speed of the compressor increases but for the power input of the compressor increases due to the increasing of the compressor speed. However the simulation does not consider the mass of the refrigerant. If the mass of the refrigerant is being considered it would give a better result for the simulation of the performance of the air conditioning system.
Book Synopsis Simulation of the Performance of HVAC Systems and Central Plant for Energy Calculations: a Component Based Modelling Approach by :
Download or read book Simulation of the Performance of HVAC Systems and Central Plant for Energy Calculations: a Component Based Modelling Approach written by and published by . This book was released on 1911 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, operational prediction and optimisation of heating, ventilating and air conditioning (HVAC) systems and central plant to minimise the energy required to maintain building indoor conditions have become increasingly important. To effectively design and implement an energy management program for building energy systems, a simulation study must be performed. This thesis describes research conducted into the development of a modular simulation program for analysing the performance of HVAC systems and central plant. The computer program uses a quasi-steady state modelling approach and is able to simulate a wide variety of systems which are configured using available component models. Steady state mathematical models of HVAC components are developed using fundamental heat and mass transfer principles, laws of conservation of mass and energy and where appropriate empirical data. The carponent models are formulated to allow for the effects of various control strategies on the performance of systems and plant to be investigated. The program is applied to simulate a part of the Collins' Building variable air volume (VAV) air conditioning system and a hypothetical central cooling plant. The results of the simulation exercises are presented and analysed. The issue of validation and building energy simulation models is discussed. Conclusions are drawn and recommendations for further work are made.
Book Synopsis Computerized Building Energy Simulation Handbook by : James P. Waltz
Download or read book Computerized Building Energy Simulation Handbook written by James P. Waltz and published by CRC Press. This book was released on 2000-01-31 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1-Introduction2-Building Simulation Myths3-Accuracy & Selecting a Tool4-Determination of Existing Conditions5-Building Survey Case Studies6-Constructing the Model7-Critiquing Output & Model Calibration8-Modeling Energy Conservation Measures9-Building Simulation & Performance ContractingAppendices
Book Synopsis Simulation of Room Air Conditioner Performance by : Brian David Bridges
Download or read book Simulation of Room Air Conditioner Performance written by Brian David Bridges and published by . This book was released on 1995 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning by : Angui Li
Download or read book Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning written by Angui Li and published by Springer Science & Business Media. This book was released on 2013-09-24 with total page 825 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning is based on the 8th International Symposium of the same name (ISHVAC2013), which took place in Xi’an on October 19-21, 2013. The conference series was initiated at Tsinghua University in 1991 and has since become the premier international HVAC conference initiated in China, playing a significant part in the development of HVAC and indoor environmental research and industry around the world. This international conference provided an exclusive opportunity for policy-makers, designers, researchers, engineers and managers to share their experience. Considering the recent attention on building energy consumption and indoor environments, ISHVAC2013 provided a global platform for discussing recent research on and developments in different aspects of HVAC systems and components, with a focus on building energy consumption, energy efficiency and indoor environments. These categories span a broad range of topics, and the proceedings provide readers with a good general overview of recent advances in different aspects of HVAC systems and related research. As such, they offer a unique resource for further research and a valuable source of information for those interested in the subject. The proceedings are intended for researchers, engineers and graduate students in the fields of Heating, Ventilation and Air Conditioning (HVAC), indoor environments, energy systems, and building information and management. Angui Li works at Xi’an University of Architecture and Technology, Yingxin Zhu works at Tsinghua University and Yuguo Li works at The University of Hong Kong.
Book Synopsis Simulation of performance of a liquid-desiccant type solar air conditioning system under different climatic conditions in the Republic of South Africa by : Aleksander Franciszek Bronislaw Johannsen
Download or read book Simulation of performance of a liquid-desiccant type solar air conditioning system under different climatic conditions in the Republic of South Africa written by Aleksander Franciszek Bronislaw Johannsen and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Building Performance Simulation for Design and Operation by : Jan L.M. Hensen
Download or read book Building Performance Simulation for Design and Operation written by Jan L.M. Hensen and published by Routledge. This book was released on 2019-04-24 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: When used appropriately, building performance simulation has the potential to reduce the environmental impact of the built environment, to improve indoor quality and productivity, as well as to facilitate future innovation and technological progress in construction. Since publication of the first edition of Building Performance Simulation for Design and Operation, the discussion has shifted from a focus on software features to a new agenda, which centres on the effectiveness of building performance simulation in building life cycle processes. This new edition provides a unique and comprehensive overview of building performance simulation for the complete building life cycle from conception to demolition, and from a single building to district level. It contains new chapters on building information modelling, occupant behaviour modelling, urban physics modelling, urban building energy modelling and renewable energy systems modelling. This new edition keeps the same chapter structure throughout including learning objectives, chapter summaries and assignments. Moreover, the book: • Provides unique insights into the techniques of building performance modelling and simulation and their application to performance-based design and operation of buildings and the systems which service them. • Provides readers with the essential concepts of computational support of performance-based design and operation. • Provides examples of how to use building simulation techniques for practical design, management and operation, their limitations and future direction. It is primarily intended for building and systems designers and operators, and postgraduate architectural, environmental or mechanical engineering students.
Book Synopsis An Implementation of Co-simulation for Performance Prediction of Innovative Integrated HVAC Systems in Buildings by :
Download or read book An Implementation of Co-simulation for Performance Prediction of Innovative Integrated HVAC Systems in Buildings written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated performance simulation of buildings and heating, ventilation and air-conditioning (HVAC) systems can help reducing energy consumption and increasing level of occupant comfort. However, no singe building performance simulation (BPS) tool offers sufficient capabilities and flexibilities to accommodate the ever-increasing complexity and rapid innovations in building and system technologies. One way to alleviate this problem is to use co-simulation. The co-simulation approach represents a particular case of simulation scenario where at least two simulators solve coupled differential-algebraic systems of equations and exchange data that couples these equations during the time integration. This paper elaborates on issues important for co-simulation realization and discusses multiple possibilities to justify the particular approach implemented in a co-simulation prototype. The prototype is verified and validated against the results obtained from the traditional simulation approach. It is further used in a case study for the proof-of-concept, to demonstrate the applicability of the method and to highlight its benefits. Stability and accuracy of different coupling strategies are analyzed to give a guideline for the required coupling frequency. The paper concludes by defining requirements and recommendations for generic cosimulation implementations.
Book Synopsis Modeling and Control in Air-conditioning Systems by : Ye Yao
Download or read book Modeling and Control in Air-conditioning Systems written by Ye Yao and published by Springer. This book was released on 2016-10-01 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the latest modeling and control technologies in the context of air-conditioning systems. Firstly, it introduces the state-space method for developing dynamic models of all components in a central air-conditioning system. The models are primarily nonlinear and based on the fundamental principle of energy and mass conservation, and are transformed into state-space form through linearization. The book goes on to describe and discuss the state-space models with the help of graph theory and the structure-matrix theory. Subsequently, virtual sensor calibration and virtual sensing methods (which are very useful for real system control) are illustrated together with a case study. Model-based predictive control and state-space feedback control are applied to air-conditioning systems to yield better local control, while the air-side synergic control scheme and a global optimization strategy based on the decomposition-coordination method are developed so as to achieve energy conservation in the central air-conditioning system. Lastly, control strategies for VAV systems including total air volume control and trim & response static pressure control are investigated in practice.
Book Synopsis Physical-stochastic Modeling of Power System Loads by : Anil Pahwa
Download or read book Physical-stochastic Modeling of Power System Loads written by Anil Pahwa and published by . This book was released on 1983 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Microcomputer Model for the Performance Simulation of Cooling and Heating Coils with Applications to Heating, Ventilating and Air-conditioning Systems by : Radhakrishna Ganesh
Download or read book A Microcomputer Model for the Performance Simulation of Cooling and Heating Coils with Applications to Heating, Ventilating and Air-conditioning Systems written by Radhakrishna Ganesh and published by . This book was released on 1987 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy Impacts of Oversized Residential Air Conditioners -- Simulation Study of Retrofit Sequence Impacts by :
Download or read book Energy Impacts of Oversized Residential Air Conditioners -- Simulation Study of Retrofit Sequence Impacts written by and published by . This book was released on 2014 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research addresses the question of what are the energy consequences for oversizing of an air conditioner in a home. Conventional wisdom holds that oversizing the AC results in significant energy penalties. However, the reason for this was shown to be due to crankcase heaters and not due to cycling performance of the AC, and is only valid for a particular set of assumptions. Adding or removing individual characteristics, such as ducts or crankcase heaters, can have measurable impacts on energy use. However, with all other home characteristics held constant, oversizing the AC generally has a small effect on cooling energy use, even if the cycling performance of the unit is poor. The relevant aspects of air conditioner modeling are discussed to illustrate the effects of the cycling loss coefficient, Cd, capacity, climate, ducts and parasitic losses such as crankcase heaters. A case study of a typical 1960's vintage home demonstrates results in the context of whole building simulations using EnergyPlus.
Book Synopsis Simulation on Air Conditioning Using Fuzzy Logic by : Bibi Rubiatul Adawiah Mustafa Kamal
Download or read book Simulation on Air Conditioning Using Fuzzy Logic written by Bibi Rubiatul Adawiah Mustafa Kamal and published by . This book was released on 2012 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air conditioning systems are integral part of almost every institution. It contributes significant part of total energy consumption. Studies suggest that in locations like class rooms, hall and offices in UMP, air conditioning can contribute as much as 75% of total energy intake. Even in homes and offices, power consumed by air conditioners is significant. Fuzzy logic is actually one of the artificial intelligence techniques that being used widely in development system nowadays. Simulation on Air Conditioner Using Fuzzy Logic is a stand-alone system that enable user to display the simulation of air conditioner spinning fan. This system is made for UMP's staff or lecturer to simulate how the fan is spin according to the temperature. The system has been successfully developed within time and user can display the output of the percentage of the fan speed based on two inputs that are set_temp and current_temp. The simulation is shown based on the inputs and output calculated using Fuzzy Logic technique.
Book Synopsis Energy Impacts of Oversized Residential Air Conditioners by : Chuck Booten
Download or read book Energy Impacts of Oversized Residential Air Conditioners written by Chuck Booten and published by . This book was released on 2014 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research addresses the question of what are the energy consequences for oversizing of an air conditioner in a home. Conventional wisdom holds that oversizing the AC results in significant energy penalties. However, the reason for this was shown to be due to crankcase heaters and not due to cycling performance of the AC, and is only valid for a particular set of assumptions. Adding or removing individual characteristics, such as ducts or crankcase heaters, can have measurable impacts on energy use. However, with all other home characteristics held constant, oversizing the AC generally has a small effect on cooling energy use, even if the cycling performance of the unit is poor. The relevant aspects of air conditioner modeling are discussed to illustrate the effects of the cycling loss coefficient, Cd, capacity, climate, ducts and parasitic losses such as crankcase heaters. A case study of a typical 1960's vintage home demonstrates results in the context of whole building simulations using EnergyPlus.
Book Synopsis Simulation of Performance of a Liquid-desiccant Solar Air-conditioning System Under Different Climatic Conditions in the Republic of South Africa by : Aleksander Franciszek Bronislaw Johannsen
Download or read book Simulation of Performance of a Liquid-desiccant Solar Air-conditioning System Under Different Climatic Conditions in the Republic of South Africa written by Aleksander Franciszek Bronislaw Johannsen and published by . This book was released on 1982 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Single-Phase Convective Heat Transfer by : Sadik Kakaç
Download or read book Handbook of Single-Phase Convective Heat Transfer written by Sadik Kakaç and published by Wiley-Interscience. This book was released on 1987-11-03 with total page 1268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Very Good,No Highlights or Markup,all pages are intact.
Book Synopsis Performance Simulation and Analysis of Temperature and Humidity Independent Control Air-conditioning System Using Energy-Plus by : Shuangzhan Jing
Download or read book Performance Simulation and Analysis of Temperature and Humidity Independent Control Air-conditioning System Using Energy-Plus written by Shuangzhan Jing and published by . This book was released on 2012 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research introduces and compares various THIC systems firstly and then focuses on the dedicated outdoor air system - dry coil (DOAS-DC) system, because the DOAS-DC system can be conveniently built by retrofitting exiting conventional air conditioning systems. System configuration, operation strategy as well as strengths and weakness of the DOAS-DC system are analysed. Simulation study on the platform of EnergyPlus is conducted to compares the performance of the DOAS-DC system with those of conventional constant air volume (CAV) system in terms of energy consumption and indoor thermal comfort. A typical office space is built on EnergyPlus. The simulation tests are performed using the hot and humid weather data in Hong Kong. Annual energy consumption of the DOAS-DC system and the CAV system serving the same office space are obtained to compare their energy performances. The simulation results indicate that energy consumption of the DOAS-DC system is 20.1% less than that of the conventional CAV system while maintaining the same indoor design parameters. Besides, the DOAS-DC system can maintain more stable indoor thermal parameters, i.e. the indoor temperature and humidity, than the CAV system.
