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Retrofitting existing buildings supports sustainability and cost savings. In this study, done as a part of university’s climate neutrality roadmap planning, we evaluated energy-saving potential in campus heating and ventilation systems using sub-meter data. Space heating systems were analyzed via clustering and linear regression to assess how energy use varied with outdoor air temperature during periods with minimal or no heat gains. For ventilation systems, we focused on supply air temperature increase in Air Handling Units (AHUs) heating coils relative to airflow, capturing operational settings and reflecting heat recovery efficiency. The approach identified key retrofit opportunities and drew actionable insights for building operators.

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Data-Driven Insights for University Campus Sustainability Planning: Evaluating Space Heating and Ventilation Systems’ Efficiency

  • 会议论文

  • 发表日期：

    2026年

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  • Sofia Vasman,
  • Karin Krauvärk,
  • Martin Thalfeldt,
  • Eduard Petlenkov

摘要

Retrofitting existing buildings supports sustainability and cost savings. In this study, done as a part of university’s climate neutrality roadmap planning, we evaluated energy-saving potential in campus heating and ventilation systems using sub-meter data. Space heating systems were analyzed via clustering and linear regression to assess how energy use varied with outdoor air temperature during periods with minimal or no heat gains. For ventilation systems, we focused on supply air temperature increase in Air Handling Units (AHUs) heating coils relative to airflow, capturing operational settings and reflecting heat recovery efficiency. The approach identified key retrofit opportunities and drew actionable insights for building operators.