The Influence of Energy Renovation on the Change of Indoor Temperature and Energy Use
Abstract
:1. Introduction
- Whether and how much does energy renovation influence indoor climate and human related energy use?
- How well do real indoor climate parameters correspond to the standard use of a building before and after the renovation?
- Is it appropriate to use a different standard use for the energy certification process for apartment buildings?
2. Methods
2.1. Studied Buildings
2.2. Evaluating Energy Consumption before and after Renovation
2.3. Indoor Climate Measurements
2.4. Standard Use of Buildings and Performance Gap
- Indoor temperature during heating period: 21 °C;
- Ventilation airflow: 0.42 L/(s∙m2) for apartments with a local air handling unit and 0.5 L/(s∙m2) for apartments with central air handling unit. The minimum requirement for renovation is 0.35 L/(s∙ m2);
- The use of DHW:520 L/(m2∙a), i.e., 30 kWh/(m2∙a);
- The use of electricity for appliances, lighting, and circulation pumps is 30 kWh/(m2∙a).
3. Results
3.1. Indoor Climate
3.2. Domestic Hot Water Use
3.3. Household Electricity
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
- Kurnitski, J.; Kuusk, K.; Tark, T.; Uutar, A.; Kalamees, T.; Pikas, E. Energy and investment intensity of integrated renovation and 2030 cost optimal savings. Energy Build. 2014, 75, 51–59. [Google Scholar] [CrossRef]
- Directive (EU) 2018/844 of the European Parliament and of the Council of 30 May 2018 Amending Directive 2010/31/EU on the Energy Performance of Buildings and Directive 2012/27/EU on Energy Efficiency. Off. J. Eur. Union 2018. Available online: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ:L:2018:156:TOC (accessed on 15 November 2018).
- EED. Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on Energy Efficiency, Amending Directives 2009/125/EC and 2010/30/EU and Repealing Directives 2004/8/EC and 2006/32/EC. Off. J. Eur. Union 2012. Available online: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ:L:2012:315:TOC (accessed on 15 November 2018).
- RED, Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009 on the Promotion of the Use of Energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC. Off. J. Eur. Union 2009. Available online: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ:L:2009:140:TOC (accessed on 15 November 2018).
- D’Agostino, D.; Zangheri, P.; Castellazzi, L. Towards Nearly Zero Energy Buildings in Europe: A Focus on Retrofit in Non-Residential Buildings. Energies 2017, 10, 117. [Google Scholar] [CrossRef]
- Pombo, O.; Allacker, K.; Rivela, B.; Neila, J. Sustainability assessment of energy saving measures: A multi-criteria approach for residential buildings retrofitting—A case study of the Spanish housing stock. Energy Build. 2016, 116, 384–394. [Google Scholar] [CrossRef] [Green Version]
- Paiho, S.; Pinto, I.S.; Jimenez, C. An energetic analysis of a multifunctional façade system for energy efficient retrofitting of residential buildings in cold climates of Finland and Russia. Sustain. Cities Soc. 2015, 15, 75–85. [Google Scholar] [CrossRef]
- Thomsen, K.E.; Rose, J.; Mørck, O.; Jensen, S.Ø.; Østergaard, I.; Knudsen, H.N.; Bergsøe, N.C. Energy consumption and indoor climate in a residential building before and after comprehensive energy retrofitting. Energy Build. 2016, 123, 8–16. [Google Scholar] [CrossRef]
- Kuusk, K.; Kalamees, T. nZEB Retrofit of a Concrete Large Panel Apartment Building. Energy Procedia 2015, 78, 985–990. [Google Scholar] [CrossRef]
- Kurnitski, J.; Ahmed, K.; Hasu, T.; Kalamees, T.; Lolli, N.; Lien, A.; Jan, J. Nzeb Energy Performance Requirements in Four Countries vs. European Commission Recommendations. In Proceedings of the REHVA Annual Meeting Conference, Brussels, Belgium, 23 April 2018; pp. 1–8. [Google Scholar]
- Ahmed, K.; Pylsy, P.; Kurnitski, J. Monthly domestic hot water profiles for energy calculation in Finnish apartment buildings. Energy Build. 2015, 97, 77–85. [Google Scholar] [CrossRef]
- Sorrell, S. Energy Substitution, Technical Change and Rebound Effects. Energies 2014, 7, 2850–2873. [Google Scholar] [CrossRef] [Green Version]
- Sorrell, S. The Rebound Effect: An Assessment of the Evidence for Economy-Wide Energy Savings from Improved Energy Efficiency; UKERC: London, UK, 2007; ISBN 1-903144-0-35. [Google Scholar]
- Calì, D.; Osterhage, T.; Streblow, R.; Müller, D. Energy performance gap in refurbished German dwellings: Lesson learned from a field test. Energy Build. 2016, 127, 1146–1158. [Google Scholar] [CrossRef]
- Mohareb, E.; Hashemi, A.; Shahrestani, M.; Sunikka-Blank, M. Retrofit Planning for the Performance Gap: Results of a Workshop on Addressing Energy, Health and Comfort Needs in a Protected Building. Energies 2017, 10, 1177. [Google Scholar] [CrossRef]
- Zhang, Y.; Bai, X.; Mills, F.P.; Pezzey, J.C.V. Rethinking the role of occupant behavior in building energy performance: A review. Energy Build. 2018, 172, 279–294. [Google Scholar] [CrossRef]
- Desideri, U.; Yan, J.; Menezes, A.C.; Cripps, A.; Bouchlaghem, D.; Buswell, R. Predicted vs. actual energy performance of non-domestic buildings: Using post-occupancy evaluation data to reduce the performance gap. Appl. Energy 2012, 97, 355–364. [Google Scholar] [Green Version]
- Ilomets, S.; Kuusk, K.; Paap, L.; Arumägi, E.; Kalamees, T. Impact of linear thermal bridges on thermal transmittance of renovated apartment buildings. J. Civ. Eng. Manag. 2017, 23, 96–104. [Google Scholar] [CrossRef]
- Ilomets, S.; Kalamees, T.; Vinha, J. Indoor hygrothermal loads for the deterministic and stochastic design of the building envelope for dwellings in cold climates. J. Build. Phys. 2017. [Google Scholar] [CrossRef]
- Mikola, A.; Kalamees, T.; Kõiv, T.-A. Performance of ventilation in Estonian apartment buildings. Energy Procedia 2017, 132, 963–968. [Google Scholar] [CrossRef]
- Kuusk, K.; Kalamees, T. Estonian Grant Scheme for Renovating Apartment Buildings. Energy Procedia 2016, 96, 628–637. [Google Scholar] [CrossRef]
- Hamburg, A.; Kalamees, T. Improving the indoor climate and energy saving in renovated apartment buildings in Estonia. In Proceedings of the 9th International Cold Climate HVAC 2018, Kiruna, Sweden, 12–15 March 2018. [Google Scholar]
- Jõesaar, T.; Hamburg, A. Korterelamute Energiaauditite Koostamise Juhend (Guideline for Energy Audits of Apartment Buildings); SA KredEx: Tallinn, Estonia, 2015. [Google Scholar]
- Toode, A.; Kõiv, T.-A. Investigation of the Domestic Hot Water Consumption in the Apartment Building. Proc. Est. Acad. Sci. Eng. 2005, 11, 207–214. [Google Scholar]
- ISO 7730. Moderate Thermal Environments—Determination of the PMV and PPD Indices and Specification of the Conditions for Thermal Comfort; ISO: Geneva, Switzerland, 1994. [Google Scholar]
- Da Silva, M.C.G. Spreadsheets for Calculation of Thermal Comfort Indices PMV and PPD; University of Coimbra: Coimbra, Portugal, 2014. [Google Scholar] [CrossRef]
- EN 15251. Indoor Environmental Input Parameters for Design and Assessment of Energy Performance of Buildings Addressing Indoor Air Quality, Thermal Environment, Lighting and Acoustics; CEN: Brussels, Belgium, 2007. [Google Scholar]
- 7 RT I, 19.01.2018, MKM määrus nr. 58, Hoonete Energiatõhususe Arvutamise Metoodika (Minister of Economic Affairs and Communications Regulation nr. 58, Methodology for Calculating the Energy Performance of Buildings). 2018. Available online: https://www.riigiteataja.ee/akt/119012018007 (accessed on 15 November 2018).
- Branco, G.; Lachal, B.; Gallinelli, P.; Weber, W. Predicted versus observed heat consumption of a low energy multifamily complex in Switzerland based on long-term experimental data. Energy Build. 2004, 36, 543–555. [Google Scholar] [CrossRef]
- La Fleur, L.; Moshfegh, B.; Rohdin, P. Measured and predicted energy use and indoor climate before and after a major renovation of an apartment building in Sweden. Energy Build. 2017, 146, 98–110. [Google Scholar] [CrossRef]
- Földváry, V.; Bukovianska, H.P.; Petráš, D. Analysis of Energy Performance and Indoor Climate Conditions of the Slovak Housing Stock before and after its Renovation. Energy Procedia 2015, 78, 2184–2189. [Google Scholar] [CrossRef]
- Broderick, Á.; Byrne, M.; Armstrong, S.; Sheahan, J.; Coggins, A.M. A pre and post evaluation of indoor air quality, ventilation, and thermal comfort in retrofitted co-operative social housing. Build. Environ. 2017, 122, 126–133. [Google Scholar] [CrossRef]
- Földváry, V.; Bekö, G.; Langer, S.; Arrhenius, K.; Petráš, D. Effect of energy renovation on indoor air quality in multifamily residential buildings in Slovakia. Build. Environ. 2017, 122, 363–372. [Google Scholar] [CrossRef]
- Fabbri, K. Thermal comfort evaluation in kindergarten: PMV and PPD measurement through datalogger and questionnaire. Build. Environ. 2013, 68, 202–214. [Google Scholar] [CrossRef]
- Kalamees, T.; Ilomets, S.; Arumägi, E.; Kuusk, K.; Liias, R.; Kõiv, T.-A.; Õier, K. Research demand of old apartment buildings in Estonia. In Proceedings of the IEA Annex 55 (RAP-RETRO), Working Meeting, Holzkirchen, Germany, 15–16 April 2010. [Google Scholar]
- Hamburg, A.; Kalamees, T. Method to divide heating energy in energy efficient building without direct measuring. Energy Procedia 2017. [CrossRef]
- Hamburg, A.; Thalfeldt, M.; Kõiv, T.; Mikola, A. Investigation of heat transfer between neighbouring apartments. In Proceedings of the 9th International Conference “Environmental Engineering”, Vilnius, Lithuania, 22–23 May 2014. [Google Scholar]
- Kurnitski, J.; Eskola, L.; Palonen, J. Ventilation in 102 Finnish single-family houses. In Proceedings of the 8th REHVA World Congress High Tech, Low Energy: Experience the Future of Building Technologies, Lausanne, Sweden, 9–12 October 2005; p. 6. [Google Scholar]
- Kuusk, K.; Kalamees, T.; Maivel, M. Cost effectiveness of energy performance improvements in Estonian brick apartment buildings. Energy Build. 2014, 77. [Google Scholar] [CrossRef]
- Arumägi, E.; Kalamees, T. Analysis of energy economic renovation for historic wooden apartment buildings in cold climates. Appl. Energy 2014, 115, 540–548. [Google Scholar] [CrossRef]
- Liu, L.; Rohdin, P.; Moshfegh, B. Evaluating indoor environment of a retrofitted multi-family building with improved energy performance in Sweden. Energy Build. 2015, 102, 32–44. [Google Scholar] [CrossRef]
- Alev, Ü.; Allikmaa, A.; Kalamees, T. Potential for financial- and energy saving of detached houses in Estonia. Energy Procedia 2015, 78, 907–912. [Google Scholar] [CrossRef]
Code | No. of Apartments | Heated Net Area, m2 | No. of People | Ventilation | DHW Circulation before/after Renovation | Additional Insulation, cm/Thermal Transmittance (U W/(m²·K)) | ||
---|---|---|---|---|---|---|---|---|
Walls | Roof | Windows | ||||||
1.1 | 25 | 1665 | 47 | Exhaust fan | −/+ | +20/0.16 | +30/0.10 | ≤1.1 |
1.2 | 18 | 1673 | 45 | Exhaust fan | −/+ | +15/0.18 | +45/0.10 | ≤1.6 |
1.3 | 18 | 1592 | 44 | Exhaust fan | +/+ | +15/0.18 | +30/0.12 | ≤1.5 |
Target: EPC “D”, PE ≤ 180 kWh/(m2∙a) (DHW with electrical boilers). 40% grant. | ||||||||
2.1 | 12 | 1029 | 40 | Central AHU | −/− | +15–20/0.21 | +23/0.13 | ≤1.4 |
2.2 | 18 | 1490 | 27 | Central AHU | −/− | +15–20/0.20 | +30/0.11 | ≤1.3 |
2.3 | 18 | 1508 | 40 | Central AHU | −/− | +15/0.24 | +21/0.15 | ≤1.1 |
2.4 | 24 | 1370 | 41 | Central AHU | −/− | +15/0.20 | +30/0.12 | ≤1.3 |
2.7 | 18 | 1180 | 40 | Central AHU | −/− | +15/0.21 | +40/0.09 | ≤1.1 |
Target: EPC “C” PE ≤ 150 kWh/(m2∙a) (with central Air Handling Unit (AHU)). 40% grant. | ||||||||
2.5 | 18 | 1306 | 45 | Central AHU | −/+ | +15/0.20 | +28/0.11 | ≤0.9 |
2.6 | 18 | 1306 | 35 | Central AHU | −/+ | +15/0.21 | +28/0.12 | ≤1.1 |
2.8 | 18 | 886 | 25 | Central AHU | −/+ | +15/0.21 | +35/0.09 | ≤1.1 |
2.9 | 12 | 903 | 24 | Central AHU | +/+ | +15/0.20 | +28/0.12 | ≤1.3 |
Target: EPC “C” PE ≤ 150 kWh/(m2∙a) (with exhaust air heat pump). 40% grant. | ||||||||
2.10 | 55 | 3378 | 89 | Exhaust fan | +/+ | +20/0.16 | +25/0.16 | ≤1.1 |
2.11 | 32 | 1505 | 96 | Exhaust fan | +/+ | +15/0.21 | +30/0.12 | ≤0.9 |
2.12 | 50 | 3904 | 130 | Exhaust fan | +/+ | +20/0.19 | +35/0.15 | ≤1.1 |
Target: Heating energy saving 30% (with natural ventilation and extra outdoor air inlets (FAI)). 15% grant. | ||||||||
15.1 | 60 | 3163 | 150 | NAT | −/− | +10/0.38 | +15/0.20 | ≤1.8 |
15.2 | 36 | 1718 | 61 | NAT+FAI | +/+ | +15–20/0.21 | +0/0.4 | ≤2.0 |
15.3 | 60 | 2959 | 150 | NAT | +/+ | +0–10/0.75 | +23/0.15 | ≤2.0 |
15.4 | 24 | 1737 | 60 | NAT+FAI | +/+ | +15/0.21 | +20/0.17 | ≤1.8 |
15.5 | 40 | 3075 | 100 | NAT | +/+ | +0–10/0.75 | +10/0.25 | ≤2.0 |
Target: Heating energy saving 40% (with natural ventilation (NAT) and extra outdoor air inlets (FAI)). 25% grant. | ||||||||
25.1 | 12 | 777 | 27 | NAT+FAI | −/− | +15/0.21 | +25/0.13 | ≤1.6 |
25.2 | 40 | 2623 | 80 | NAT+FAI | +/+ | +10–15/0.30 | +25/0.13 | ≤1.4 |
25.3 | 60 | 3519 | 150 | NAT+FAI | +/+ | +15/0.21 | +20/0.17 | ≤1.6 |
25.4 | 12 | 550 | 24 | NAT | −/− | +15/0.21 | +25/0.13 | ≤1.6 |
25.5 | 16 | 1903 | 38 | NAT+FAI | −/− | +10–15/0.28 | +30/0.11 | ≤1.6 |
Target: Heating energy saving 50% (supply-exhaust room units (SERU)). 35% grant. | ||||||||
35.1 | 18 | 1064 | 40 | SERU | −/+ | +10–15/0.30 | +13/0.20 | ≤1.4 |
35.2 | 18 | 1285 | 44 | SERU | −/+ | +15/0.21 | +13/0.20 | ≤1.6 |
35.7 | 18 | 1026 | 34 | SERU | +/+ | +5–15/0.28 | +23/0.15 | ≤1.6 |
35.9 | 12 | 940 | 30 | SERU | −/− | +15–20/0.20 | +20/0.17 | ≤1.6 |
Target: Heating energy saving 50% (with exhaust air heat pump). 35% grant. | ||||||||
35.3 | 21 | 1527 | 60 | Exhaust fan | −/+ | +15/0.21 | +25/0.15 | ≤1.6 |
35.4 | 18 | 1041 | 40 | Exhaust fan | −/+ | +15/0.21 | +23/0.16 | ≤1.6 |
35.5 | 18 | 1162 | 40 | Exhaust fan | +/+ | +10/0.28 | +23/0.16 | ≤1.6 |
35.6 | 15 | 1151 | 38 | Exhaust fan | +/+ | +15/0.21 | +23/0.16 | ≤1.6 |
35.8 | 72 | 5030 | 200 | Exhaust fan | +/+ | +15/0.21 | +23/0.16 | ≤1.6 |
Target: Heating energy saving 50% (with central Air Handling Unit (AHU)). 35% grant. | ||||||||
35.10 | 15 | 561 | 16 | Central AHU | −/− | +15/0.21 | +10/0.25 | ≤1.6 |
DHW before and after Renovation | DHW Circulation after Renovation | ||
---|---|---|---|
Yes | No | ||
DHW circulation before renovation | Yes | Before renovation: 42 kWh/(m2·a) After renovation: 39 kWh/(m2·a) | - |
No | Before renovation: 24 kWh/(m2·a) After renovation: 37 kWh/(m2·a) | Before renovation: 21 kWh/(m2·a) After renovation: 21 kWh/(m2·a) |
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Hamburg, A.; Kalamees, T. The Influence of Energy Renovation on the Change of Indoor Temperature and Energy Use. Energies 2018, 11, 3179. https://doi.org/10.3390/en11113179
Hamburg A, Kalamees T. The Influence of Energy Renovation on the Change of Indoor Temperature and Energy Use. Energies. 2018; 11(11):3179. https://doi.org/10.3390/en11113179
Chicago/Turabian StyleHamburg, Anti, and Targo Kalamees. 2018. "The Influence of Energy Renovation on the Change of Indoor Temperature and Energy Use" Energies 11, no. 11: 3179. https://doi.org/10.3390/en11113179