Advances in Modeling of Ground-source Heat Pump Systems
Author: Andrew David Chiasson
Publisher:
Published: 1999
Total Pages: 310
ISBN-13:
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Advances in Ground-Source Heat Pump Systems
Author: Simon Rees
Publisher: Woodhead Publishing
Published: 2016-05-13
Total Pages: 484
ISBN-13: 0081003226
DOWNLOAD EBOOKAdvances in Ground-Source Heat Pump Systems relates the latest information on source heat pumps (GSHPs), the types of heating and/or cooling systems that transfer heat from, or to, the ground, or, less commonly, a body of water. As one of the fastest growing renewable energy technologies, they are amongst the most energy efficient systems for space heating, cooling, and hot water production, with significant potential for a reduction in building carbon emissions. The book provides an authoritative overview of developments in closed loop GSHP systems, surface water, open loop systems, and related thermal energy storage systems, addressing the different technologies and component methods of analysis and optimization, among other subjects. Chapters on building integration and hybrid systems complete the volume. Provides the geological aspects and building integration covered together in one convenient volume Includes chapters on hybrid systems Presents carefully selected chapters that cover areas in which there is significant ongoing research Addresses geothermal heat pumps in both heating and cooling modes
Advanced Modeling of Vertical Ground Source Heat Pumps Using Finite Element Techniques
Author: Seyed Omid Komari Zadeh
Publisher:
Published: 2011
Total Pages: 120
ISBN-13:
DOWNLOAD EBOOKIncreasing energy demand and environmental pollution in United States has been led toward using renewable energy sources over recent decades. Ground-source heat pump systems are one of the promising new energy technologies that have shown rapid increase in usage over the past ten years in the United States. Low efficiency and lack of design guidelines are still the limits of GSHP systems. This paper studies the effects of heat conduction in boreholes used in geothermal heat pump systems. The purpose of this study was to determine the temperature distribution in ground source heat pump system by studying and modeling the ground bore and compare it to proposed design system based on advanced heat transfer and finite elements techniques. Solid Works software, version 2010 is utilized to simulate and calculate each system by using finite elements methods. Findings and Conclusions: The ground loop heat exchanger model was successfully implemented in the Solid Works program. The primary objective of this study is: examine effects of ground-boreholes on closed-loop GSHP systems, develop a design and simulation tool for modeling the performance of a ground Loop Heat Exchanger on closed-loop GSHP systems, and comparing the effects of boreholes different configuration in energy distribution on closed-loop GSHP systems. Simulation result based on the mathematical background which is presented in chapter 2 and 3, have an excellent agreement with the purpose of this thesis and showed the significant energy saving. The solid and hollow cylindrical bores simulate in steady state and transient cases. The results demonstrate around 5.8 % saving in energy consumption by applying a proposed system.
Geothermal Energy
Author: Marc A. Rosen
Publisher: John Wiley & Sons
Published: 2017-01-30
Total Pages: 307
ISBN-13: 1119180988
DOWNLOAD EBOOKComprehensively covers geothermal energy systems that utilize ground energy in conjunction with heat pumps to provide sustainable heating and cooling The book describes geothermal energy systems that utilize ground energy in conjunction with heat pumps and related technologies to provide heating and cooling. Also discussed are methods to model and assess such systems, as well as means to determine potential environmental impacts of geothermal energy systems and their thermal interaction. The book presents the most up-to-date information in the area. It provides material on a range of topics, from thermodynamic concepts to more advanced discussions of the renewability and sustainability of geothermal energy systems. Numerous applications of such systems are also provided. Geothermal Energy: Sustainable Heating and Cooling Using the Ground takes a research orientated approach to provide coverage of the state of the art and emerging trends, and includes numerous illustrative examples and case studies. Theory and analysis are emphasized throughout, with detailed descriptions of models available for vertical and horizontal geothermal heat exchangers. Key features: Explains geothermal energy systems that utilize ground energy in conjunction with heat pumps to provide heating and cooling, as well as related technologies such as thermal energy storage. Describes and discusses methods to model and analyze geothermal energy systems, and to determine their potential environmental impacts and thermal interactions. Covers various applications of geothermal energy systems. Takes a research orientated approach to provide coverage of the state of the art and emerging trends. Includes numerous illustrative examples and case studies. The book is key for researchers and practitioners working in geothermal energy, as well as graduate and advanced undergraduate students in departments of mechanical, civil, chemical, energy, environmental, process and industrial engineering.
Advancements in the Simulation of Ground Source Heat Pump Systems
Author: James Robert Cullin
Publisher:
Published: 2014
Total Pages: 160
ISBN-13:
DOWNLOAD EBOOKWith ground source heat pump systems becoming an increasing focus in the building energy efficiency sector, fully understanding their behavior is key. For systems such as these, computer simulation is typically performed to design them, or to examine their potential energy performance. Therefore, having detailed simulations that take into account all relevant behaviors of these systems is of the utmost importance.
Ground-Source Heat Pumps
Author: Ioan Sarbu
Publisher: Academic Press
Published: 2015-10-01
Total Pages: 217
ISBN-13: 0128042419
DOWNLOAD EBOOKGround-Source Heat Pumps presents the theory and some of the most recent advances of GSHPs and their implementation in the heating/cooling system of buildings. The authors explore the thermodynamic cycle with calculation, operation regimes and economic indicators and GHG emissions of a vapor compression heat pump. They go on to examine substitution strategies of non-ecological refrigerants and types of compressors and heat pumps, before delving into the different GSHP systems, as well as their compared economic, energy and environmental performances using classical and optimized adjustment for various operating modes. Surface water heat pumps and ground water heat pumps are covered, and special focus is given to both vertical and horizontal ground-coupled heat pump systems, for which modelling and simulation is discussed, and experimental systems are described. Due to its advanced approach to the subject, this book will be especially valuable for researchers, graduate students and academics, and as reference for engineers and specialists in the varied domains of building services. Explores fundamentals and state-of-the-art research, including ground-coupled heat pump (GCHP) systems. Includes performance assessment and comparison for different types of GSHP, numerical simulation models, practical applications of GSHPs with details on the renewable energy integration, information on refrigerants, and economic analysis.
Modeling, Simulation and Optimization of Ground Source Heat Pump Systems
Author:
Publisher:
Published: 2004
Total Pages:
ISBN-13:
DOWNLOAD EBOOKHeating and Cooling with Ground-Source Heat Pumps in Cold and Moderate Climates
Author: Vasile Minea
Publisher: CRC Press
Published: 2022-04-19
Total Pages: 443
ISBN-13: 1000564258
DOWNLOAD EBOOKHeating and Cooling with Ground-Source Heat Pumps in Cold and Moderate Climates: Design Principles, Potential Applications and Case Studies focuses on applications and cases studies of ground-source heat pumps in moderate and cold climates. It details technical aspects (such as materials, thermal fluid carriers and pumping, and drilling/trenching technologies), as well as the most common and uncommon application fields for basic system configurations. The principles of system integrations and applications in moderate and cold climates (such as hybrid, solar-assisted, thermo-syphon, foundation, mines, snow melting, district heating and cooling ground-source heat pump systems, etc.) are also presented, each followed by case studies. Based on the author's more than 30 years of technical experience Discusses ground-source heat pump technologies that can be successfully applied in moderate and cold climates Presents several case studies, including successful energy results, as well as the main lessons learned This work is aimed at designers of HVAC systems, as well as geological, mechanical, and chemical engineers implementing environmentally-friendly heating and cooling technologies for buildings.
Dynamic Modeling and Control of Hybrid Ground Source Heat Pump Systems
Author: Chang Chen
Publisher:
Published: 2008
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKGround source heat pump (GSHP) systems are one of the fastest growing applications of renewable energy in the world with annual increases of 10% over the past decade. GSHPs are potentially more efficient than conventional air-to-air heat pumps as they use the relatively constant temperature of the geothermal energy to provide heating or cooling to conditioned rooms at desired temperature and relative humidity. More importantly, GSHP systems can in fact achieve significant energy savings year round, compared to conventional HVAC systems. A hybrid ground source heat pump (HGSHP) system is designed in this study to heat and cool an office building all the year round. Dynamic models of each component of the heat pump system are developed for simulations of heat transfer between each component of the HGSHP system and for control strategy design and analysis. A detailed multiple-load aggregation algorithm (MLAA) is adapted from the literature to precisely account for and calculate the transient heat conduction in vertical ground heat exchangers with different yearly, monthly, and daily pulses of heat. Feedback PI controllers for heat pump units and On/Off controllers for boiler and cooling tower are designed and utilized to match anticipated building loads and to analyze transient response characteristics of such outputs as water flow rate and air flow rate of heat pumps, return water temperature and supply air temperature of heat pumps, water temperatures of ground loops and heat exchangers, water temperature of boiler or cooling tower, and fuel flow rate of boiler. Control strategies for the HGSHP system in both heating and cooling modes of operation are also introduced to study the system responses. With the usage of On/Off controllers and well-tuned PI controllers, as well as optimal control strategies for heating and cooling operations, the HGSHP system is expected to give better operating performance and efficiency. As a result, noticeable energy savings can be achieved in both heating and cooling modes of operation.
Geothermal Heat Pumps
Author: Karl Ochsner
Publisher: Taylor & Francis
Published: 2012-04-27
Total Pages: 165
ISBN-13: 1136564977
DOWNLOAD EBOOKGeothermal Heat Pumps is the most comprehensive guide to the selection, design and installation of geothermal heat pumps available. This leading manual presents the most recent information and market developments in order to put any installer, engineer or architect in the position to design, select and install a domestic geothermal heat pump system. Internationally respected expert Karl Ochsner presents the reasons to use heat pumps, introduces basic theory and reviews the wide variety of available heat pump models.
