Abstract
The reliable operation of Heat Recovery Ventilator (HRV) is critical for maintaining a healthy indoor environment to remove contaminants and moisture, however, it remains a challenge in the Northern Canada due to the frequent frosting under the extreme cold conditions. The heat generated by a building-integrated photovoltaic/thermal (BIPV/T) system can be used to pre-heat the incoming fresh air in HRV in order to reduce its defrost cycle, therefore, improving the reliability of HRV to provide adequate ventilation required. In this case, the BIPV/T needs to be designed for higher air temperature rise, which may not be optimum for the thermal energy and PV power generation. Therefore, system integration and optimization for coupling BIVP/T with HRVs is required. Depending on the level of thermal energy available and the outlet air temperature from the BIPV/T system, a control strategy needs to be developed to optimize the operation of HRVs. This paper presents the analysis of four different BIPV/T configurations and their integration with HRVs for a 120 m2 house located in Iqaluit, NU, Canada through modelling. Results show that the outlet air of a BIPV/T façade installation can be 14.8 °C higher than outdoor air on a clear sky winter day and that the defrost cycle can be reduced by 13%, up to 619 h annually.
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Notes
- 1.
An average day is estimated by calculating the mean of the weather parameters of the days of the seasonal typical week indicated in the TMY data. For Iqaluit, the typical summer week is July 13 to July 19, and the typical winter week is January 20 to January 26 [10].
- 2.
January 29 and June 16 of a TMY were chosen as representative clear sky days, due to their low value of daily average sky cover, a value of 1.63 and 0.58, respectively [10].
- 3.
In this paper, electricity generation includes also the fan electricity consumption, thus, it is a net electricity production. However, in general electricity generation does not consider the consumption of the fan.
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Toffanin, R., Ge, H., Athienitis, A. (2019). Integration of Building Integrated Photovoltaic/Thermal (BIPV/T) System with Heat Recovery Ventilators for Improved Performance Under Extreme Cold Climates. In: Johansson, D., Bagge, H., Wahlström, Å. (eds) Cold Climate HVAC 2018. CCC 2018. Springer Proceedings in Energy. Springer, Cham. https://doi.org/10.1007/978-3-030-00662-4_9
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