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Selected Works

Joshua M. Pearce

Selected Works

Combined heat and power

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Improved Performance Of Hydbrid Photovoltaic-Trigeneration Systems Over Photovoltaic-Cogen Systems Including Effects Of Battery Storage, Amir H. Nosrat, Lukas G. Swan, Joshua M. Pearce Oct 2015

Improved Performance Of Hydbrid Photovoltaic-Trigeneration Systems Over Photovoltaic-Cogen Systems Including Effects Of Battery Storage, Amir H. Nosrat, Lukas G. Swan, Joshua M. Pearce

Joshua M. Pearce

Recent work has proposed that hybridization of residential-scale cogeneration with roof-mounted solar PV (photovoltaic) arrays can increase the PV penetration level in ideal situations by a factor of five. In regions where there is a significant cooling load PV-cogen hybrid systems could be coupled to an absorption chiller to utilize waste heat from the cogen unit. In order to investigate realistic (non-ideal) loads that such a hybrid system would need to service, a new numerical simulation called PVTOM (PV-trigeneration optimization model) was created and coupled to the results of the established CHREM (Canadian Hybrid Residential End-Use Energy and Emissions Model). …

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Simulations Of Greenhouse Gas Emission Reductions From Low-Cost Hybrid Solar Photovoltaic And Cogeneration Systems For New Communities, Amir H. Nosrat, Lukas G. Swan, Joshua M. Pearce Oct 2015

Simulations Of Greenhouse Gas Emission Reductions From Low-Cost Hybrid Solar Photovoltaic And Cogeneration Systems For New Communities, Amir H. Nosrat, Lukas G. Swan, Joshua M. Pearce

Joshua M. Pearce

Recent work has shown that small-scale combined heat and power (CHP) and solar photovoltaic (PV) technologies have symbiotic relationships, which enable coverage of technical weaknesses while providing the potential of significant greenhouse gas emission reductions at the residential level. With the reductions in the cost of PV systems and the increasing maturity of CHP systems an opportunity exists for widespread commercialization of the technology, particularly for new construction. In order to determine the potential for this opportunity and to optimize the design of PV–CHP systems for greatest emission and cost reductions in the residential context a simulation, an optimization model …

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Institutional-Scale Operational Symbiosis Of Photovoltaic And Cogeneration Energy Systems, M. Mostofi, A. H. Nosrat, Joshua M. Pearce Dec 2010

Institutional-Scale Operational Symbiosis Of Photovoltaic And Cogeneration Energy Systems, M. Mostofi, A. H. Nosrat, Joshua M. Pearce

Joshua M. Pearce

Due to the negative environmental effects of fossil fuel combustion, there is a growing interest in both improved efficiency in energy management and a large-scale transition to renewable energy systems. Using both of these strategies, a large institutional-scale hybrid energy system is proposed here, which incorporates both solar photovoltaic energy conversion to supply renewable energy and cogeneration to improve efficiency. In this case, the photovoltaic reduces the run time for the cogeneration to meet load, particularly in peaking air conditioning times. In turn, however, the cogeneration system is used to provide power back up for the photovoltaic during the night …

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Expanding Photovoltaic Penetration With Residential Distributed Generation From Hybrid Solar Photovoltaic Combined Heat And Power Systems, Joshua M. Pearce Jul 2009

Expanding Photovoltaic Penetration With Residential Distributed Generation From Hybrid Solar Photovoltaic Combined Heat And Power Systems, Joshua M. Pearce

Joshua M. Pearce

The recent development of small scale combined heat and power (CHP) systems has provided the opportunity for in-house power backup of residential-scale photovoltaic (PV) arrays. This paper investigates the potential of deploying a distributed network of PV + CHP hybrid systems in order to increase the PV penetration level in the U.S. The temporal distribution of solar flux, electrical and heating requirements for representative U.S. single family residences were analyzed and the results clearly show that hybridizing CHP with PV can enable additional PV deployment above what is possible with a conventional centralized electric generation system. The technical evolution of …

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