Energy Renovation of Social Housing Finding a Balance
Energy Renovation of Social Housing: Finding a Balance Between Increasing Insulation and Improving Heating System Efficiency Els Van de moortel, Karen Allacker, Frank De Troyer, Luc Stijnen, Erik Schoofs Department of Architecture, KU Leuven, els. vandemoortel@kuleuven. be
INTRODUCTION Social housing Policy goals energy use decrease - energy use - environmental impact RENOVATION Download full paper at www. cesb. cz/19/8888 1265
AIM of the research § Support decision making proces of social housing companies Insight in investment cost, life cycle cost and environmental impact of § renovation strategies § Insight in importance of the assumptions in the method Download full paper at www. cesb. cz/19/8888 1265
METHOD Sum of the Present Value of the heating cost building parameters service life of the building current energy price with economic parameters Life cycle cost heating system Environmental impact Belgian LCA method and monetization [1, 2] [1] Allacker K, Debacker W, Delem L, De Nocker L, De Troyer F, Janssen A, Peeters K, Servaes R, Spirinckx C and Van Dessel J 2012 Environmental profile of building elements OVAM Mechelen [2] De Nocker L and Debacker W 2014 Annex: Monetisation of the MMG method OVAM Mechelen Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Investment cost and Financial Life Cycle Cost Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Investment cost and Financial Life Cycle Cost - zoom Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Investment cost and Environmental Life Cycle Cost Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Impact of the assumed service life of the building: 30 years in stead of 60 years financial impact environmental impact 27 000 1 500 Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Impact of the current energy price Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Impact of the discount rate and growth rate for energy prices Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Impact of insulation level of the original building: EPB 2006 financial impact environmental impact Download full paper at www. cesb. cz/19/8888 1265
RESULTS of the case study building Impact of building type: semi-detached and free standing Download full paper at www. cesb. cz/19/8888 1265
CONCLUSION 1 renovation option is preferred from both financial as environmental perspective: cavity insulation combined with roof insulation for this case study building Sensitivity analyses clarified the influence of various parameters: Decreasing the estimated remaining building service life Impact on F-LCC and E-LCC of the renovation scenarios No change in the ranking of renovation scenarios Higher energy price Significantly higher F-LCC for all scenarios Little change in the ranking of renovation scenarios Higher nominal discount rate Lower F-LCC No change in the ranking of renovation scenarios Insulation level of the existing building Higher F-LCC for all renovation scenarios except replacing boiler Higher E-LCC for all renovation scenarios Building type Semi-detached buildings similar to terraced houses Free standing houses show other ranking of building types Download full paper at www. cesb. cz/19/8888 1265
Acknowledgement Download full paper at www. cesb. cz/19/8888 1265
Thank you for your attention! Els Van de moortel els. vandemoortel@kuleuven. be Scan QR or download full paper at www. cesb. cz/19/ 1265
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