C17 -- Feasibility Analysis and Evaluation Framework of Integrating Novel PVT with Low-Exergy Systems PDF

Air-Based PVT utilizes air as a transfer medium to extract heat from the backside of the PV module, where the waste heat can be further recovered and directed to other building energy systems. This study analyzes and maps various integration strategies for air-PVT with low-exergy systems, by examining their feasibilities critically. Engineering, efficiency constraints and other critical factors are considered. Meanwhile, given the engineering features, climate and cost, a thorough evaluation framework is developed. This aims to further assist engineers to effectively select the optimal integration configurations, benchmarking the as-built installations of a given building. This study primarily focuses on five integration strategies that built upon commonly used existing building installations in Scandinavian climate, namely, 1) Preheating the incoming air for frost prevention applications of mechanical ventilation systems with heat recovery: 2) Coupling with Exhaust Air Heat Pump systems for space heating applications; 3) Coupling with thermal-storage or integrating air-source heat pump systems with heating and domestic water supply applications, 4) Encompassing both night sky radiative cooling and daytime desiccant cooling systems applications, and, 5) Integrations with Energy Recovery Ventilation. Moreover, the study explores other potential operations with, e.g., medium to long-term thermal storage applications by considering borehole heat exchangers, latent heat storage from both stand-alone tanks and building envelopes.