Download or read book Investigations of Novel Heat Pump Systems for Low Carbon Homes written by Blaise Mempouo and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigations of Novel Heat Pump Systems for Low Carbon Homes written by B. Mempouo and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The European standard EN15450 states that the Coefficient of Performance (COP) target range for a Ground Source Heat Pump (GSHP) installation should lie within the range of 3.5 to 4.5; when used for heating a building, and a typical Air-Source Heat Pump (ASHP) has a COP of 2.0 to 3.0 at the beginning of the heating season and then decrease gradually as the ambient air becomes cooler, whereas a typical GSHP is in the range of 3.5 –4.0, also at the beginning of the heating season and then decrease gradually as heat is drawn from the ground. For these reasons, in the middle of winter, when the COP drop, the heat pumps can generally only be considered as a 'pre-heating' method for producing higher temperature heat such as domestic hot water. In addition soil presents certain difficulties, due to the high cost of drilling to position coils in the ground compare to air source, although frost formation on the evaporator in winter limits also limit the use of air source. Though technology advances or are needed to overcome those issues. The aims of this project, therefore, were firstly to reduce the drilling length of the ground heat exchanger of the ground source heat pumps and to maintain high COPs of the air and ground source heat pumps from beginning to the end of the heating season; and secondly to develop a viable alternative evaporator for air source heat pumps to reduce frost formation during winter. These were achieved; the first aim through the combination of ground loops with solar-air panels or solar roof/collectors roof to ground heat exchangers loops to reduce the length of the boreholes, and to reduce the freezing effects around the boreholes, hence increase or maintain a constant temperature during heating season. The second aim was also achieved through development and validation of novel air source heat pump evaporator, using Direct Expansion (DX) black flat plate absorber or/and vacuum tubes for frost reduction. In this thesis, in order to achieve the above aims; four aspects of investigations have been independently investigated as following: 1- Preliminary investigation on Direct Expansion (DX) Solar Source Heat Pump system. 2- Investigation on the performance of the DX- PV/heat pipe heat pump system to reduce frost and enhance the COP of the air source heat pumps, 3- A small scale testing on the heat injection on energy piles for residential buildings for earth charging by means of solar roof/collectors 4- A field trial testing of the performance of the combination of solar-air thermal collectors with conventional GSHP with shorter ground heat exchangers (48m deep) to charge the ground and reduce freezing effects around the piles after heating cycle. From the simulation results, the novel PV/hp-HP system has a COP ranging from 4.65 to 6.16 with an average of 5.35. The condenser capacity ranging from 33 to 174 W would provide the heat source for space heating and domestic hot water. The energy performance of the novel PV/hp-heat pump was not as good as expected due to the low solar radiation. It should be much better in some low latitude locations with better solar radiation. The results of this thesis have shown that the length of ground source boreholes could be considerably reduce by about 60% compare to conventional boreholes using a combination of solar-air collectors with the GSHP and the average COP of 3.7 was achieved.
Download or read book Novel Technologies to Boost Heat Pump Efficiency for Low Carbon Homes written by Blaise Mempouo and published by . This book was released on 2018-05-27 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Pumps for the Home written by John Cantor and published by Crowood. This book was released on 2013-06-30 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, heat pumps have emerged as a promising new form of technology with a relatively low environmental impact. Moreover, they have presented householders with an opportunity to reduce their heating bills. Heat pumps can heat a building by 'pumping' heat from either the ground or the air outside: an intriguing process which utilizes principles that are somewhat analogous to those employed in the domestic refrigerator. Armed with the practical information contained in these pages, homeowners will have the necessary knowledge to take advantage of this potentially low-carbon technology to heat their properties.Describes what a heat pump is, how it works, the different methods of pumping heat and the importance of an appropriate and well-planned installation. Examines the air, the ground and water as sources of heat and explains how to make an informed choice. Considers the all-important subject of distributing the heat through radiators or through an under-floor system. Covers hot water production and delivery to the taps. Outlines environmental and financial issues associated with heat pumps. Dispels some common misconceptions and presents a number of case studies. Essential reading for all those householders who are considering installing heat pumps in order to heat their homes in a more eco-friendly and efficient way. Aimed at those homeowners who wish to do some of the work themselves or who wish to shadow sub-contractors. A useful reference tool for architects, plumbers, heating engineers, builders and students. Superbly illustrated with 155 colour photographs and diagrams by Gavin D J Harper. John Cantor is a heat pump engineer, inspector and consultant and has written many articles on the subject. Gavin D J Harper is a member of the Institute of Engineering and Technology.
Download or read book Investigation of a Novel Solar Assisted Heat Recovery Heat Pump System for Building Space Heating and Hot Water Supply written by Yi Fan and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of Energy Systems written by Ibrahim Din¿er and published by John Wiley & Sons. This book was released on 2017-05-15 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential resource for optimizing energy systems to enhance design capability, performance and sustainability Optimization of Energy Systems comprehensively describes the thermodynamic modelling, analysis and optimization of numerous types of energy systems in various applications. It provides a new understanding of the system and the process of defining proper objective functions for determination of the most suitable design parameters for achieving enhanced efficiency, cost effectiveness and sustainability. Beginning with a general summary of thermodynamics, optimization techniques and optimization methods for thermal components, the book goes on to describe how to determine the most appropriate design parameters for more complex energy systems using various optimization methods. The results of each chapter provide potential tools for design, analysis, performance improvement, and greenhouse gas emissions reduction. Key features: Comprehensive coverage of the modelling, analysis and optimization of many energy systems for a variety of applications. Examples, practical applications and case studies to put theory into practice. Study problems at the end of each chapter that foster critical thinking and skill development. Written in an easy-to-follow style, starting with simple systems and moving to advanced energy systems and their complexities. A unique resource for understanding cutting-edge research in the thermodynamic analysis and optimization of a wide range of energy systems, Optimization of Energy Systems is suitable for graduate and senior undergraduate students, researchers, engineers, practitioners, and scientists in the area of energy systems.
Download or read book The Investigation and Optimization of a Two Heat Pump System Incorporating Thermal Storage for Shaping Residential Heating Load written by and published by . This book was released on 2016 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portland General Electric has proposed coupling one or more water tanks with two heat pumps in order to perform load-shifting in residential customer heating and cooling applications. By using the water tanks as a thermal storage unit, this project attempts to partially decouple energy consumption from generation to provide peak demand reduction and to better facilitate the integration of variable renewable energy resources. A scoping study was performed to evaluate the potential impact of this project if implemented in single family homes in Portland, Oregon. This study revealed that the system could provide meaningful savings in the cost of electricity to both the customer and utility. Additionally, an optimization algorithm was developed to dictate system operation and to maximize gains to the utility. Evolutionary algorithms were explored in an attempt to increase the effectiveness of the algorithm's search in limited computation time. Ultimately, an evolution strategy was selected as the most suitable based on tests run in winter and spring months. A genetic algorithm was then developed to handle fixed-speed heat pump operation for compatibility with an alpha-system prototype that has been developed by the research team.
Download or read book Investigations of Novel Ground Source Heat Pumps written by Christopher John Wood and published by . This book was released on 2009 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of a Ground source Heat Pump Retrofit to an Electrically Heated Multi family Building Final Report written by Canada Mortgage and Housing Corporation. External Research Program and published by . This book was released on 2002 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 1960s and 1970s, electric baseboard heating systems were a common space heating approach in multi-unit residential buildings due to low installation costs, minimal use of interior space and the relatively low price of electricity. As a result, approximately 50% of apartment buildings in Canada have electric baseboard heating. However, rapidly increasing costs of electricity, concerns over environmental damage associated with conventional generating stations and the very age of most electric baseboards in apartment buildings will necessitate the development of alternative space heating strategies. This is a report of research to investigate the technical potential and economic benefits of retrofitting electrically heated apartment buildings with ground-source heat pumps. The report presents results of a literature and web search and review of available components and equipment suitable for the application, and analyses the most promising combination using an example building complex in the Greater Toronto area. Both the cases of no benefit and full benefit for central air conditioning are considered. Comparisons are drawn with retrofitting natural gas heating systems under the same circumstances. Conclusions and recommendations for new component development are identified and the economic results are as attractive under some circumstances as natural gas heating system retrofits.
Download or read book Advances in Ground Source Heat Pump Systems written by Simon Rees and published by Woodhead Publishing. This book was released on 2016-05-13 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances 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
Download or read book Investigation of Gas Engine Driven Heat Pump Systems written by C. Hickman and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Pumps for Sustainable Heating and Cooling written by Y. H. Venus Lun and published by . This book was released on 2020 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the significance of using sustainable energy to prevent the deterioration of our planet using heat pumps. Energy sustainability can be achieved through improved energy efficiency. In this regard, heat pumps offer an energy-efficient alternative for heating and cooling. To drive the adoption of heat pumps as a key component of sustainable buildings, the authors focus on examining sustainable practices in heat pump operations and innovative system design. In view of the growing desire to use sustainable energy to meet heating and cooling demands and improve indoor air quality, this book offers a valuable reference guide to the available options in HVAC (heating, ventilation, and air-conditioning) system design. To begin with, the authors define sustainable energy and discuss the trend of "thinking green" in building design. They then discuss sustainable practices and heat pump applications in mapping out HVAC systems. In turn, they examine the use of green operations to promote sustainable practices and, in order to highlight the importance of innovative design, discuss the configuration options and precision control aspects. In closing, the authors illustrate innovative sustainable design on the basis of several energy-efficient cases. The books main goal is to drive the adoption of sustainable energy solutions. Heat pumps, it argues, represent the most efficient system for meeting commercial/recreational/residential heating and cooling demands. The book not only examines industrial practices in heat pump application, but also discusses advanced heat pump technologies and innovative heat pump designs.
Download or read book Investigation of Mechanical Heat Pump Systems for Heat Upgrading Applications written by Vishavdeep Singh and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three high temperature heat pump systems based on vapor compression cycles are introduced and examined. Four fluids (water, cyclohexane, biphenyl and mercury) are selected and analysed thermodynamically as prospective working fluids for the high temperature heat pumps. These working fluids are used in cascaded cycles to upgrade the heat to a temperature of 600 °C. The equations of state used in performance analysis are Peng-Robinson, NRTL and IAPWS-95. A parametric analysis is carried out to study the effects of isentropic efficiency, sink temperature, source temperature, and ambient temperature on the system performance. Energetic and exergetic COPs of the overall and individual cycles are determined. The COP values obtained are found to range from 2.08 to 4.86, depending upon the cycle and temperature levels. The System 2 (energetic and exergetic COPs are 3.8 and 1.9 respectively) outperforms System 1 (energetic and exergetic COPs are 2.2 and 1.0 respectively) both energetically and exergetically, while operating under same conditions of source temperature 81°C and sink temperature 600 °C. The System 3 achieves maximum cycle temperature of 792 °C while operating under moderate pressure ratios. The high COP values in some instances make these systems promising alternatives to fossil fuel and electrical heating. As a possible sustainable scenario, these pumps can utilise low grade heat from geothermal, nuclear or thermal power plants and derive work from clean energy sources (solar, wind, nuclear) to deliver high grade heat. The high delivery temperatures make these heat pumps suitable for processes with corresponding needs, like high temperature endothermic reactions, metallurgical processes, distillation, and thermochemical water splitting.
Download or read book Low Carbon Mobility Transitions written by Debbie Hopkins and published by Goodfellow Publishers Ltd. This book was released on 2016-11-30 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough examination of how methods of low-carbon transport can be implemented using international case studies, with contributions from recognised industry experts, academics and policy makers.
Download or read book An Investigation of the Heat Pump written by Olavi Viita and published by . This book was released on 1933 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of a Novel Air Source Heat Pump Test Platform written by Yuan Shi and published by . This book was released on 2013 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of a Ground source Heat Pump Retrofit to an Electrically Heated Multi family Building written by and published by . This book was released on 2003 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
