Download or read book Design Analysis and Optimization of a Dual Tank Solar assisted Heat Pump System written by Carsen Jeffrey Banister and published by . This book was released on 2015 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work investigates the performance of a dual tank solar-assisted heat pump (SAHP) system. These systems combine solar thermal collectors (STCs) and a heat pump (HP) into a hybrid system to meet building thermal loads. The main goals of a system of this type are to reduce energy consumption and provide a method to deliver thermal energy with sustainable sources. This research project undertook the design, testing, model creation and tuning, performance evaluation, and optimization of a dual tank SAHP system for domestic hot water (DHW). The novel SAHP configuration developed uses a second thermal storage tank to create more modes of operation with the intent of decreasing the amount of purchased energy. A key aspect of the work was a test apparatus built at the University of Waterloo (UW) to facilitate equipment testing and mapping, identify operational problems such as HP short-cycling, and tune mode components. Alternatives were modelled in TRNSYS to develop design recommendations and assess economic justification for the dual tank SAHP system. Despite noticeable electricity savings by these systems, an analysis of tolerable capital cost versus electricity cost shows that SAHP systems are not justifiable for single family dwellings at the current time. The impact of electricity time-of-use charges was investigated, which revealed that the DHW, SDHW, and single tank SAHP systems consume a similar amount of electricity during off-peak hours. The performance of the dual tank SAHP system in many global climate types was assessed to identify locations best suited for such a system. Many recommendations are provided to improve economic justification of the system. Overall, the performance benefits of a dual tank SAHP system over the alternatives was demonstrated. Due to the high capital costs of the additional equipment required, economic justification is difficult for a single-family residential application. There are promising applications and system augmentations that should be investigated which can lead to a successful demonstration project of a dual tank solar-assisted heat pump system.
Download or read book Optimization of Solar Assisted Heat Pump Systems Via a Simple Analytic Approach written by and published by . This book was released on 1980 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of a Dual Tank Indirect Solar Assisted Heat Pump System for a High Performance House written by Jenny Chu and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1983 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2024 the 8th International Conference on Energy and Environmental Science ICEES 2024 written by Yanan Liu and published by Springer Nature. This book was released on with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Numerical Code for Simulation Analysis and Optimization of Solar Assisted Heat Pump System Using Libr water Absorption Type Chiller for Heating and Cooling of Buildings written by Vijay K. Samaymantri and published by . This book was released on 1986 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of 3rd Annual Solar Heating and Cooling Research and Development Branch Contractors Meeting September 24 27 1978 Washington D C written by and published by . This book was released on 1979 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of a Series configuration Solar assisted Heat Pump with Performance predictive Controls written by Christopher Thomas Chassé and published by . This book was released on 2017 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis evaluates a configuration of a 3-mode solar-assisted heat pump (SAHP), which features a heat exchanger and heat pump which may operate independently or in series to provide heat for a domestic hot water system. The system is designed to deliver heat through the heat exchanger, heat pump, or both simultaneously, with the operating mode dictated by a system controller. The configuration is evaluated in comparison to established system designs, such as electric-only, solar domestic hot water (SDHW) and 2-mode SAHP (heat exchanger or heat pump) systems. TRNSYS 17 simulation software is used to perform year-long simulations of the systems for performance comparison purposes. Subjecting each system to the same parameters, weather conditions and draw patterns ensures that differences in performance are due to the available modes of heat delivery. The systems simulated in TRNSYS use mathematical models of physical components to model the behaviour of a real system. Most of the models used were previously validated by former student William Wagar, supporting their use here. The system includes a heat exchanger and heat pump that are connected to operate independently or in series, depending on the settings of several flow diverter valves. The inclusion of the series configuration is intended to maximize heat gains in high-demand scenarios and to extend heat pump operating hours in low-availability scenarios. A highly-detailed decision-making scheme is developed to control the system. The scheme uses measurements of available sunlight and system temperatures to predict the performance of individual components, using validated equations and specified system settings. The predicted performance values are used, in conjunction with an evaluation of the current system demands for heat, to determine the optimal mode of operation at that time. The “optimal” mode may be the mode which delivers the most heat, consumes the least electricity, or has the best heat delivery to electricity consumption ratio (COP), depending on the demand; the highly effective control strategy balances these priorities to achieve high solar gains and energy savings, while maintaining high temperatures in the storage tank. The behaviour of multi-mode SAHP systems, when contrasted with single-mode designs, shows that having the option to use a heat exchanger and a heat pump substantially improves solar gains and electricity savings. Such systems have the flexibility to adapt to changing weather conditions to ensure strong performance at all times. The behaviour study shows that under the current control settings, the series configuration is rarely utilized by the system. Additionally, system behaviour is dominated by the maximum heat delivery mode, with rare consideration of power consumption. A parametric study indicates that SAHP systems operate most effectively with a constant thermostat setting of 60 C. A location/climate study indicates that SAHP systems are best-suited to settings in which SDHW systems fare poorly, such as the sub-arctic climate of Whitehorse, Yukon, Canada. A highly detailed control scheme with the ability to apply several definitions of “optimal performance” is shown to allow excellent system performance in comparison to single-definition designs. The results of this study indicate that the series mode is a beneficial but rarely-used option, though use of this mode may be increased if a smaller heat pump is installed. It is recommended to focus on further development of the control scheme by optimizing system settings. It is also recommended to perform tests of the system, using an appropriately-sized variable-speed heat pump, to validate the controller's feasibility and further advance the field of SAHP study.
Download or read book Solar Assisted Ground Source Heat Pump Solutions written by Francesco Reda and published by Springer. This book was released on 2016-12-09 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyses solar-assisted ground-source heat pump systems, a technology meant for producing heating and cooling energy for buildings. It focuses on ground source heat pump, reversible central heating and cooling system that transfer heat from or to the ground, applications which use solar thermal collectors. Providing deep insights into energy-saving, solar thermal system operating strategies, it illustrates examples of useful configurations and controlling approach for different climates for different vertical ground heat exchanger depths. Offering an overview of solar assisted ground source heat pump systems, including design principles and energy-performance data for different climates, it is a valuable resource for designers and scientists who focus on building heating and cooling technologies.
Download or read book Proceedings of Annual Solar Heating and Cooling Research and Development Branch Contractors Meeting written by and published by . This book was released on 1979 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Energy Update written by and published by . This book was released on 1980 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adsorption Heat Pumps written by Daniel B. Boman and published by Springer Nature. This book was released on 2021-05-21 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume introduces the fundamentals of adsorption heat pumps, beginning with the simplest cycle and building to the most complex. Selection of adsorbents and refrigerants, design of adsorption beds and auxiliary heat exchangers, and applications for different designs are all discussed. The book educates engineering students, engineers, and researchers about an environmentally friendly alternative to vapor compression refrigeration systems promising for many applications. The authors cover thermodynamic cycles, working materials for the cycles, and aspects of designing and modeling adsorption heat pumps. Elucidates the various applications of adsorption heat pumps; Illustrates modeling techniques for quickly screening new working materials early in their development; Provides comprehensive review of cycle types, with discussion of the applications for which they are best suited; Appropriate for graduate courses on advanced thermodynamics, design of thermal systems, sustainable energy technology, refrigeration technologies, and thermal control of electronics.
Download or read book Solar and Heat Pump Systems for Residential Buildings written by Jean-Christophe Hadorn and published by John Wiley & Sons. This book was released on 2015-09-08 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combination of heat pumps and solar components is a recent development and has great potential for improving the energy efficiency of house and hot water heating systems. As a consequence, it can enhance the energy footprint of a building substantially. This work compares different systems, analyses their performance and illustrates monitoring techniques. It helps the reader to design, simulate and assess solar and heat pump systems. Good examples of built systems are discussed in detail and advice is given on how to design the most efficient system. This book is the first one about this combination of components and presents the state of the art of this technology. It is based on a joint research project of two programmes of the International Energy Agency: the Solar Heating and Cooling Programme (SHC) and the Heat Pump Programme. More than 50 experts from 13 countries have participated in this research.
Download or read book Directory of solar energy research activities in the United States written by and published by . This book was released on 1980 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Analysis of an Indirect Solar Assisted Heat Pump for Domestic Water Heating written by Andrew George Bridgeman and published by . This book was released on 2010 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to rising energy costs and increasing environmental awareness, various methods of energy conservation are being investigated. In the residential sector, both solar and heat pump systems have been extensively tested. Recently, combinations of solar and heat pump systems have been developed for both space heating and water heating. These systems have the capability to provide better performances than either of the systems operating on their own. The solar collector benefits from a lower fluid (glycol) inlet temperature which increases efficiencies, and the heat pump benefits from higher evaporator temperatures due to the additional solar energy collected. For this study, a prototype of an Indirect-Solar Assisted Heat Pump for use in the Canadian environment was constructed, instrumented and tested. Controlled, constant temperature tests, as well as solar profile tests were conducted and the heat transfer rates, natural convection flow rate, and heat pump coefficient of performance (COP) were calculated. These values were then compared to simulation results based on a model developed in a previous feasibility study. The experimental COPs calculated ranged from 2.3 to 3.3 throughout the full range of tests which were conducted with supply temperatures ranging from 0°C - 40°C. The simulated results consistently overestimated the experimental results by between 12% - 15%. New empirical heat exchanger relationships were developed for the model bringing the simulated results within 5% of the experimental results for tests run at glycol flow rates of 77 and 154 kg/hr. These relationships were used to refine the model, and produce updated annual performance values in the TRNSYS simulation software. Updated results showed a 5% drop in the annual free energy ratio in Toronto from 57% to 52%, but further optimization of the system using the TRNSYS software package improved annual results up to 56%. For the purposes of the study, a solar assisted heat pump prototype was constructed and tested successfully within the laboratory environment. Results showed that the system has a strong market potential, especially in regions without a strong solar resource. Based on these results further research is recommended, continuing with a full year outdoor test using unglazed solar collectors.
Download or read book Solar Energy Sciences and Engineering Applications written by Napoleon Enteria and published by CRC Press. This book was released on 2013-12-10 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar energy is available all over the world in different intensities. Theoretically, the solar energy available on the surface of the earth is enough to support the energy requirements of the entire planet. However, in reality, progress and development of solar science and technology depends to a large extent on human desires and needs. This is du
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
