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Bridging the gap of actual and calculated heating energy consumption in bottom-up residential building stock modeling.

Premošcavanje jaza (razlike) izmedu stvarnog i proracunatog korišcenja toplotne energije u modelovanju stambenih zgrada odozdo naviše.

Author(s) : BALARAS C. A., DASCALAKI E. G., DROUSTA K. G., et al.

Summary

Residential buildings have been at the center stage of European and national efforts to meet the energy and emissions targets by imposing more stringent codes for new buildings and encouraging the transformation of existing buildings to higher energy performance standards. Building stock models are commonly used to assess different energy efficiency measures, quantify their impact on reducing the energy use towards meeting the national targets and to prioritize policies. However, various studies have demonstrated the gap of calculated and actual energy use in buildings. The work elaborates a method to adapt model predictions in order to obtain more realistic estimates of energy use. The approach exploits data from energy performance certificates to derive simple empirical adaptation factors (defined as a ratio of actual to calculated energy use), complemented by evidence from short field surveys to quantify the impact of behavioral changes of occupants and the role of the human factor on the use of space heating that deviate from normative calculation assumptions. The results from the certificates indicate an average bound difference of 48% lower energy use than calculated for single-family houses and 44% for multi-family houses. The results from the field surveys that were carried out in order to quantify the deviations from standard operating conditions used in the normative calculations (e.g. lower hours of operation and indoor temperature settings, heating smaller floor areas of dwellings) provided a lower bound of 68% as a conservative estimate of actual energy use.

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Pages: 19 p.

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Details

  • Original title: Premošcavanje jaza (razlike) izmedu stvarnog i proracunatog korišcenja toplotne energije u modelovanju stambenih zgrada odozdo naviše.
  • Record ID : 30020200
  • Languages: English
  • Subject: Environment
  • Source: 47th International HVAC&R Congress and Exhibition.
  • Publication date: 2016/12

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