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Modeling of Photovoltaic-Thermal District Heating with Dual Thermal Modes

Kang, A; Korolija, I; Rovas, D; (2021) Modeling of Photovoltaic-Thermal District Heating with Dual Thermal Modes. In: Scartezzini, JL and Smith, B, (eds.) CISBAT 2021 Carbon-neutral cities - energy efficiency and renewables in the digital era 8-10 September 2021. IOP Publishing: EPFL Lausanne, Switzerland. Green open access

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Abstract

Solar photovoltaic thermal (PVT) collectors could be a competitive addition to district heating systems, particularly in areas with high energy density since they simultaneously produce electricity and heat whilst increasing the PV efficiency through cooling. This study presents a new Modelica PVT model, which is used together with EnergyPlus in a co-simulation setup to assess the technical feasibility of solar PVT district heating in new builds. The model has been applied to a block of 12 2-bedroom terraced houses with a 184m2 PVT array on the south facing side of the roof. It was identified that well-designed seasonal PVT heating configurations and control schemes are required to maximise PVT outputs. PVT dual thermal modes occur when the PV is either connected to a load or producing at close to the maximum power point. Integrating the dual modes into a control system could be more economical if heat tariffs were higher than electrical ones when heat demand is greater than the PVT thermal output.

Type: Proceedings paper
Title: Modeling of Photovoltaic-Thermal District Heating with Dual Thermal Modes
Event: International Hybrid Conference on Carbon Neutral Cities - Energy Efficiency and Renewables in the Digital Era (CISBAT)
Location: Ecole Polytechnique Fed Lausanne, Solar Energy & Bldg Phys Lab, Lausanne, SWITZERLAND
Dates: 08 September 2021 - 10 September 2021
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/1742-6596/2042/1/012090
Publisher version: https://doi.org/10.1088/1742-6596/2042/1/012090
Language: English
Additional information: This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10140900
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