[New Paper] Performance Evaluation of a nZEB in Temperate Climate Based on Field Measurements

Without continuous monitoring and multicriteria certification will never be able to close the energy performance gap and avoid discomfort. In this case study, we aimed to assess the performance of a new nearly Zero Energy Clinic with Office Spaces recently built in Ottignies, Belgium. Field evaluation of building performance parameters is required to evaluate the energy performance gap between the designed and real buildings. Based on this context, the following research questions are formulated:

✅ Q1: How do the indoor thermal comfort conditions vary in the reference building?
✅ Q2: How does space cooling and heating energy use vary in the reference building?
✅ Q3: How do greenhouse gas emissions vary in the reference building?

The main novelty presented in this paper is the implementation of a time-integrated, multizonal thermal discomfort evaluation using a year-long field measurement of a real office building.

The building is certified to comply with the Belgian Passive Hause Standard requirements and is fully space conditioned. Our monitoring approach was based on collecting information and validating the:
✅ HVAC System Maps
✅Create a real weather data file inline with ISO-15927
✅Multizonal calibration based on sub-metering time series data.

Unfortunately, we did not have a multizonal monitoring system for operative temperature. Therefore, we focused on calibration energy use and thermal comfort in a couple of representative spaces where a black globe temperature sensor (according to ISO7726) and velocity sensors were installed. We are currently using the new model for sensitivity analysis and uncertainty analysis to generate a learned lessons report.

Citation: Amaripadath, D., Velickovic, M., & Attia, S. (2022). Performance evaluation of a nearly zero-energy office building in a temperate oceanic climate based on field measurements. Energies, 15(18), 6755.

📣 Read and share the 📄 article. The paper is available in Open Access format: https://lnkd.in/e_wzZqWC

Download the model and monitoring dataset: Amaripadath, D.; Attia, S. Field Measurement Dataset of a Nearly Zero-Energy Office Building in Temperate Oceanic Climate; Harvard Dataverse: Cambridge, MA, USA, 2022.

Deepak Amaripadath led this joint research with MK-Engineering. The authors would like to gratefully acknowledge the Walloon Region, EU MSCA, and MK Engineering for Project SurChauffe funding. We would also like to thank the stakeholders of Project OCCuPANt. We acknowledge Clinic Saint-Pierre, for their consent and support for the case study. This study was a part of the IEA EBC Annex 80-Resilient Cooling of Buildings.

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