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Download or read book Evaluation of Variable Refrigerant Flow (VRF) Systems Performance in Ornl's Flexible Research Platform (FRP). written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 79 pages
Book Rating : 4.:/5 (925 download)
Download or read book Evaluation of Variable Refrigerant Flow Systems Performance and the Enhanced Control Algorithm on Oak Ridge National Laboratory S Flexible Research Platform written by and published by . This book was released on 2015 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: A research project "Evaluation of Variable Refrigerant Flow (VRF) Systems Performance and the Enhanced Control Algorithm on Oak Ridge National Laboratory's (ORNL's) Flexible Research Platform" was performed to (1) install and validate the performance of Samsung VRF systems compared with the baseline rooftop unit (RTU) variable-air-volume (VAV) system and (2) evaluate the enhanced control algorithm for the VRF system on the two-story flexible research platform (FRP) in Oak Ridge, Tennessee. Based on the VRF system designed by Samsung and ORNL, the system was installed from February 18 through April 15, 2014. The final commissioning and system optimization were completed on June 2, 2014, and the initial test for system operation was started the following day, June 3, 2014. In addition, the enhanced control algorithm was implemented and updated on June 18. After a series of additional commissioning actions, the energy performance data from the RTU and the VRF system were monitored from July 7, 2014, through February 28, 2015. Data monitoring and analysis were performed for the cooling season and heating season separately, and the calibrated simulation model was developed and used to estimate the energy performance of the RTU and VRF systems. This final report includes discussion of the design and installation of the VRF system, the data monitoring and analysis plan, the cooling season and heating season data analysis, and the building energy modeling study.
Download or read book Evaluation of Variable Refrigerant Flow (VRF) System Performance Using an Occupancy Simulated Research Building written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Napoleon Enteria
Publisher : Springer Nature
ISBN 13 : 9811968330
Total Pages : 251 pages
Book Rating : 4.8/5 (119 download)
Download or read book Variable Refrigerant Flow Systems written by Napoleon Enteria and published by Springer Nature. This book was released on 2023-01-31 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles the latest research, development, and application of VRF systems with contributions from various experts who pioneered and contributed to the development of the VRF system. This book presents the fundamental issues related to the real application and behaviour of the VRF system based on the long-term monitoring of the installed system. With our experience of pandemic which COVID-19 is an airborne, the spread of the virus is very fast. With this, the heating, ventilating and air-conditioning (HVAC) system is a major player in the maintenance and control of indoor environment to minimize the spread of the virus. As the variable refrigerant flow (VRF) system is a versatile HVAC system in which it can operate at different conditions, the application of the VRF system is very important to control the indoor environmental conditions. Thus, the publication of this book is important with the present situation and the future possible situation which the control of indoor spaces is very important. With this, this book will serve as a reference for building designer, contractors, building regulators and students.
Author : Dongsu Kim
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (111 download)
Download or read book Energy Performance Evaluation and Economic Analysis of Variable Refrigerant Flow Systems written by Dongsu Kim and published by . This book was released on 2019 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study evaluates energy performance and economic analysis of variable refrigerant flow (VRF) systems in U.S. climate locations using widely-accepted whole building energy modeling software, EnergyPlus. VRF systems are known for their high energy performance and thus can improve energy efficiency in buildings. To evaluate the energy performance of a VRF system, energy simulation modeling and calibration of a VRF heat pump (HP) type system is performed using the EnergyPlus program based on measured data collected from an experimental facility at Oak Ridge National Laboratory (ORNL). In the calibration procedures, the energy simulation model is calibrated, according to the ASHRAE Guideline 14-2014, under cooling and heating seasons. After a proper calibration of the simulation model, the VRF HP system is placed in U.S. climate locations to evaluate the performance variations in different weather conditions. An office prototype building model, developed by the U.S. Department of Energy (DOE), is used with the VRF HP system in this study. This study also considers net-zero energy building (NZEB) design of VRF systems with a distributed photovoltaic (PV) system. The NZEB concept has been considered as one of the remedies to reduce electric energy usages and achieve high energy efficiency in buildings. Both the VRF HP and VRF heat recovery (HR) system types are considered in the NZEB design, and a solar PV system is utilized to enable NZEB balances in U.S. climate locations by assuming that net-metering available within the electrical grid-level. In addition, this study conducts life cycle cost analysis (LCCA) of NZEBs with VRF HP and HR systems. LCCA provides present values at a given study period, discounted payback period, and net-savings between VRF HP and HR systems in U.S. climate locations. Preliminary results indicate that the simulated VRF HP system can reasonably predict the energy performance of the actual VRF HP system and reduce between 15-45% for HVAC site energy uses when compared to a VAV system in U.S. climate locations. The VRF HR system can be used to lower building energy demand and thus achieve NZEB performance effectively in some hot and mild U.S. climate locations.
Download or read book Performance Evaluation of a Ground Source Variable Refrigerant Flow (VRF) System for a University Building in Cold Climate written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.3/5 ( download)
Download or read book Nuclear Waste Management Quarterly Progress Report written by and published by . This book was released on 1980 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lingen Chen
Publisher : Nova Publishers
ISBN 13 : 9781590339145
Total Pages : 282 pages
Book Rating : 4.3/5 (391 download)
Download or read book Advances in Finite Time Thermodynamics written by Lingen Chen and published by Nova Publishers. This book was released on 2004 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 170 years ago, Sadi Carnot, a French engineer, published his famous article "Reflections on the motive power of fire" and established a new field of science: classical thermodynamics. Since 1985, the scholars in the Naval University of Engineering (from 1949 to 1998) have been making the research work in the field of finite time thermodynamics. This multi-authored book deals with the recent advances of finite time thermodynamics in the Naval University of Engineering. It illustrates how the gap between thermodynamics, heat transfer, and fluid mechanics is bridged. It also illustrates how the gap between physics and engineering is bridged. The readers should find the papers informative and useful for analysis and design of thermodynamic systems with improved performance. The authors hope that this collection of work devoted to finite thermodynamics will provide encouragement for further research in the field.
Author : Kory M. Ward
Publisher : Amer. Assoc. for Clinical Chemistry
ISBN 13 : 9781890883898
Total Pages : 206 pages
Book Rating : 4.8/5 (838 download)
Download or read book Clinical Diagnostic Technology written by Kory M. Ward and published by Amer. Assoc. for Clinical Chemistry. This book was released on 2003 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark S. Owen
Publisher : Amer Society of Heating
ISBN 13 : 9781933742557
Total Pages : 1000 pages
Book Rating : 4.7/5 (425 download)
Download or read book 2009 ASHRAE Handbook written by Mark S. Owen and published by Amer Society of Heating. This book was released on 2009 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2009 ASHRAE Handbook-Fundamentals covers basic principles and data used in the HVAC&R industry. The ASHRAE Technical Committees that prepare these chapters strive not only to provide new information, but also to clarify existing information, delete obsolete materials, and reorganize chapters to make the Handbook more understandable and easier to use. An accompanying CD-ROM contains all the volume's chapters in both I-P and SI units.
Author : Deb O'Rourke
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (319 download)
Download or read book Commissioning Existing Buildings written by Deb O'Rourke and published by . This book was released on 1998 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : American Society of Heating, Refrigerating and Air-Conditioning Engineers
Publisher :
ISBN 13 : 9781936504459
Total Pages : pages
Book Rating : 4.5/5 (44 download)
Download or read book ASHRAE Handbook written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
