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OF WATER SLOURCE HEAT PUMPS Thesis Approved: Thesis Adviser Dean of the Graduate College ii. ACKNOWLEDGEMENTS I wish to express my sincere appreciation to all of the people who helped me to accomplish this dissertation. First and foremost, I wish to thank my advisor, Dr. Jeffrey D. Spitler. His expertise and respected reputation in the HVAC field allowed for the funding of many projects and.
Annex A Description of the heat pump model’s implementation in Simulink 55 Annex B Calculation of radiator heat transfer coefficient 72 Annex C Calculation of solar gain 76 References 79. 7 List of figures 2.1 Idealised (reverse Carnot) heat pump cycle 2.2 Heat pump systems with different supplementary heating configurations 4.1 IDEAS model response to a step change in set point temperature.GROUND-SOURCE HEAT PUMP SYSTEMS Thesis Approved: Thesis Adviser Dean of the Graduate College. iii ACKNOWLEDGEMENTS This thesis would not have been possible without the contributions of several people. To all of these people, I wish to express my gratitude. First and foremost, I wish to thank my thesis adviser, Dr. Jeffrey Spitler. His expertise and respected reputation in the thermal sciences.Figure 2. 8: Four main components of the Refrigerant Loop of a Heat Pump 32 Figure2. 9: Thermodynamic model of heat pump vapour compression cycle. 39 Figure 2.10: Thermodynamic model of heat pump vapour compression cycle. 40 Figure 2.11: The annual variation of the ground temperature at a site in Newcastle, UK, throughout years.
Kevin James Kircher, Ph.D. Cornell University 2019 One tenth of anthropogenic greenhouse gas emissions are caused by heating and cooling buildings. E cient electric heat pumps could signi cantly reduce these emissions, but face barriers to adoption related to costs, equipment selection and installation, and other factors. The goal of this thesis is to reduce emissions by lowering barriers to.Read More
Dane Christensen, PhD, is a senior research engineer. Jeff. 2001 used a TRNSYS model based on test results from three HPWHs to show that the annual coefficient of performance (COP) for an integrated HPWH was 2.3, which translated to an annual energy savings of 56%, and the COP of a HPWH with an external condenser n was 1.8 or desig44% annual energy savings (Morrison 2003). The technology.Read More
HEAT PUMP SYSTEMS Thesis Approved:. Furthermore, a short time-step ground loop heat exchanger model is crucial for analysis of hybrid ground source heat pump systems. Ground source heat pumps for cooling-dominated commercial buildings utilize supplemental heat rejecters such as cooling towers, fluid coolers or surface heat rejecters to reduce system first cost and to improve system.Read More
Mempouo, B. (2011) Investigations of novel heat pump systems for low carbon homes. PhD thesis, University of Nottingham. Access from the University of Nottingham repository.Read More
Therefore the work described in this thesis has focused on the development of a generic empirical transient system model of a GSHP system. This model has been developed using TRNSYS 17 software. This has permitted investigation of the effects of different control strategies using a dry air cooler (DAC) for heat rejection, energy consumption of the HP, the overall performance of the system and.Read More
The use of Combined Heat and Power (CHP) units, heat pumps and electric boilers increases the linkages between electricity and heat networks. In this thesis, a combined analysis was developed to investigate the performance of electricity and heat networks as an integrated whole. This was based on a model of electrical power flow and hydraulic and thermal circuits together with their coupling.Read More
Heat is rejected by the bed across a range of temperatures and, at a later time accepted across a higher but overlapping range. Some of the energy rejected could be recycled by a regenerative system. The ideal machine The idealised model of thermally driven heat pumps is the three or four.Read More
Improved modeling of unit commitment decisions under uncertainty, PhD thesis, KU Leuven, May 2016. (5) D. Patteeuw and L. Helsen (supervisor), Demand response for residential heat pumps in interaction with the electricity generation system, PhD thesis, KU Leuven, September 2016.Read More
Potter, Jonathan; Stringer, Peter and Wetherell, Margaret (1984). Social Texts and Context: Literature and Social Psychology. London: Routledge and Kegan Paul.Read More
The thesis demonstrates systematic methods of modelling and analysing certain, integrated, domestic, HVAC applications. The reference system boundaries enclose the building as a construction and as a dynamic function, a comfort-providing system based on a heat pump, a low-temperature hydronic heat distribution system and controls in a residential application. Obviously, these are not the only.Read More