Heat Transfer, Environmental Benefits, and Social Cost Analysis of Different Insulation Methods by Considering Insulation Disadvantages

Document Type: Research Article


1 Department of Mechanical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran.

2 Research Institute of Applied Power System Studies, Azarbaijan Shahid Madani University, Tabriz, Iran.


In this paper, the thermal performance of four common insulators in two internal and external insulation systems is investigated for the ASHRAE setpoint range by applying detailed numerical simulation and Anti-Insulation phenomenon. Anti-Insulation phenomenon and consequent extra load on the HVAC system can occur following the thermal insulation of a building if proper temperature setpoint is not selected. In the next step, the proper setpoint is analyzed under simulated building conditions, and all related criteria are studied for this temperature. Also, continuous and intermittent operations of the air conditioning system are investigated. Moreover, the assessment of the environmental benefit of wall insulation is performed by evaluating greenhouse gasses emission payback period and social cost saving. A residential building is simulated in the EnergyPlus software for the case study. Results show that Anti-Insulation occurs approximately at 22 ºC. Both external and internal insulations lead to a significant reduction in energy consumption. Nevertheless, the external insulation shows a bit more reduction. Intermittent operation outperforms the continuous operation by 8 % on average. The insulator’s production phase is considered in the analysis of the insulation environmental benefits. Results show that, in this case, the prioritization of insulators would be different from that case in which this process is not considered. According to results, in terms of social costs, applying thermal insulation to residential buildings is necessary.


Main Subjects

1.     Ameri, M. and Gerami, A., "A multi-scenario zero-energy building techno-economic case study analysis for a renovation of a residential building", Journal of Renewable Energy and Environment (JREE), Vol. 5, No. 3, (2018), 10-26. (https://doi.org/10.30501/jree.2018.88708).

2.     Maftouni, N. and Askari, M., "Building energy optimization: Implementing green roof and rainwater harvester system for a residential building", Journal of Renewable Energy and Environment (JREE), Vol. 6, No. 2, (2019), 38-45. (https://doi.org/10.30501/jree.2019.96023).

3.     Idris, Y.M. and Mae, M., "Anti-insulation mitigation by altering the envelope layers’ configuration", Energy and Buildings, Vol. 141, (2017), 186-204. (https://doi.org/10.1016/j.enbuild.2017.02.025).

4.     I.M.o.E. Review of 29 Yearly Iran Energy Statistical Data, (2018-2019).

5.     Barrios, G., Huelsz, G. and Rojas, J., "Thermal performance of envelope wall/roofs of intermittent air-conditioned rooms", Applied Thermal Engineering, Vol. 40, (2012), 1-7. (https://doi.org/10.1016/j.applthermaleng.2012.01.051).

6.     Huang, Y., Niu, J.-L. and Chung, T.-M., "Study on performance of energy-efficient retrofitting measures on commercial building external walls in cooling-dominant cities", Applied Energy, Vol. 103, (2013), 97-108. (https://doi.org/10.1016/j.apenergy.2012.09.003).

7.     Meng, X., Luo, T., Gao, Y., Zhang, L., Huang, X., Hou, C., Shen, Q. and Long, E., "Comparative analysis on thermal performance of different wall insulation forms under the air-conditioning intermittent operation in summer", Applied Thermal Engineering, Vol. 130, (2018), 429-438. (https://doi.org/10.1016/j.applthermaleng.2017.11.042).

8.     Zhang, L., Luo, T., Meng, X., Wang, Y., Hou, C. and Long, E., "Effect of the thermal insulation layer location on wall dynamic thermal response rate under the air-conditioning intermittent operation", Case Studies in Thermal Engineering, Vol. 10, (2017), 79-85. (https://doi.org/10.1016/j.csite.2017.04.001).

9.     Zhou, J., Li, Y., Xiao, X. and Long, E., "Experimental research on thermal performance differences of building envelopes in multiple heating operation conditions", Procedia Engineering, Vol. 205, (2017), 628-635. (https://doi.org/10.1016/j.proeng.2017.10.409).

10.   Cheng, F., Zhang, X. and Su, X., "Comparative assessment of external and internal insulation for intermittent air-conditioned bedrooms in Shanghai", Procedia Engineering, Vol. 205, (2017), 50-55. (https://doi.org/10.1016/j.proeng.2017.09.933).

11.   Hou, C., Meng, X., Gao, Y., Mao, W. and Long, E., "Effect of the insulation materials filling on the thermal performance of sintered hollow bricks under the air-conditioning intermittent operation", Case Studies in Construction Materials, Vol. 8, (2018), 217-225. (https://doi.org/10.1016/j.cscm.2018.02.007).

12.   Kolaitis, D.I., Malliotakis, E., Kontogeorgos, D.A., Mandilaras, I., Katsourinis, D.I. and Founti, M.A., "Comparative assessment of internal and external thermal insulation systems for energy efficient retrofitting of residential buildings", Energy and Buildings, Vol. 64, (2013), 123-131. (https://doi.org/10.1016/j.enbuild.2013.04.004).

13.   Kossecka, E. and Kosny, J., "Influence of insulation configuration on heating and cooling loads in a continuously used building", Energy and Buildings, Vol. 34, No. 4, (2002), 321-331. (https://doi.org/10.1016/S0378-7788(01)00121-9).

14.   Yuan, L., Kang, Y., Wang, S. and Zhong, K., "Effects of thermal insulation characteristics on energy consumption of buildings with intermittently operated air-conditioning systems under real time varying climate conditions", Energy and Buildings, Vol. 155, (2017), 559-570. (https://doi.org/10.1016/j.enbuild.2017.09.012).

15.   Bojić, M., Miletić, M. and Bojić, L., "Optimization of thermal insulation to achieve energy savings in low energy house (refurbishment)", Energy Conversion and Management, Vol. 84, (2014), 681-690. (https://doi.org/10.1016/j.enconman.2014.04.095).

16.   Charles, A., Maref, W. and Ouellet-Plamondon, C.M., "Case study of the upgrade of an existing office building for low energy consumption and low carbon emissions", Energy and Buildings, Vol. 183, (2019), 151-160. (https://doi.org/10.1016/j.enbuild.2018.10.008).

17.   Derradji, L., Imessad, K., Amara, M. and Errebai, F.B., "A study on residential energy requirement and the effect of the glazing on the optimum insulation thickness", Applied Thermal Engineering, Vol. 112, (2017), 975-985. (https://doi.org/10.1016/j.applthermaleng.2016.10.116).

18.   Dombaycı, Ö.A., "The environmental impact of optimum insulation thickness for external walls of buildings", Building and Environment, Vol. 42, No. 11, (2007), 3855-3859. (https://doi.org/10.1016/j.buildenv.2006.10.054).

19.   Ozel, M., "Thermal, economical and environmental analysis of insulated building walls in a cold climate", Energy Conversion and Management, Vol. 76, (2013), 674-684. (https://doi.org/10.1016/j.enconman.2013.08.013).

20.   Özkan, D.B. and Onan, C., "Optimization of insulation thickness for different glazing areas in buildings for various climatic regions in Turkey", Applied Energy, Vol. 88, No. 4, (2011), 1331-1342. (https://doi.org/10.1016/j.apenergy.2010.10.025).

21.   Vincelas, F.F.C., Ghislain, T. and Robert, T., "Influence of the types of fuel and building material on energy savings into building in tropical region of Cameroon", Applied Thermal Engineering, Vol. 122, (2017), 806-819. (https://doi.org/10.1016/j.applthermaleng.2017.04.028).

22.   Alam, M., Singh, H., Suresh, S. and Redpath, D., "Energy and economic analysis of Vacuum Insulation Panels (VIPs) used in non-domestic buildings", Applied Energy, Vol. 188, (2017), 1-8. (https://doi.org/10.1016/j.apenergy.2016.11.115).

23.   Friess, W.A., Rakhshan, K., Hendawi, T.A. and Tajerzadeh, S., "Wall insulation measures for residential villas in Dubai: A case study in energy efficiency", Energy and Buildings, Vol. 44, (2012), 26-32. (https://doi.org/10.1016/j.enbuild.2011.10.005).

24.   Huo, H., Shao, J. and Huo, H., "Contributions of energy-saving technologies to building energy saving in different climatic regions of China", Applied Thermal Engineering, Vol. 124, (2017), 1159-1168. (https://doi.org/10.1016/j.applthermaleng.2017.06.065).

25.   Liu, Z., Liu, Y., He, B.-J., Xu, W., Jin, G. and Zhang, X., "Application and suitability analysis of the key technologies in nearly zero energy buildings in China", Renewable and Sustainable Energy Reviews, Vol. 101, (2019), 329-345. (https://doi.org/10.1016/j.rser.2018.11.023).

26    Cabeza, L.F., Castell, A., Medrano, M., Martorell, I., Pérez, G. and Fernández, I., "Experimental study on the performance of insulation materials in Mediterranean construction", Energy and Buildings, Vol. 42, No. 5, (2010), 630-636. (https://doi.org/10.1016/j.enbuild.2009.10.033).

27.   Chuah, J.W., Raghunathan, A. and Jha, N.K., "ROBESim: A retrofit-oriented building energy simulator based on EnergyPlus", Energy and Buildings, Vol. 66, (2013), 88-103. (https://doi.org/10.1016/j.enbuild.2013.07.020).

28.   Fang, Z., Li, N., Li, B., Luo, G. and Huang, Y., "The effect of building envelope insulation on cooling energy consumption in summer", Energy and Buildings, Vol. 77, (2014), 197-205. (https://doi.org/10.1016/j.enbuild.2014.03.030).

29.   Farhanieh, B. and Sattari, S., "Simulation of energy saving in Iranian buildings using integrative modelling for insulation", Renewable Energy, Vol. 31, No. 4, (2006), 417-425. (https://doi.org/10.1016/j.renene.2005.04.004).

30.   Mujeebu, M.A., Ashraf, N. and Alsuwayigh, A.H., "Effect of nano vacuum insulation panel and nanogel glazing on the energy performance of office building", Applied Energy, Vol. 173, (2016), 141-151. (https://doi.org/10.1016/j.apenergy.2016.04.014).

31.   Raynham, P., Book review: The lighting handbook 10th edition, Reference and application, Sage Publications, Sage UK, London, England, (2012). (https://doi.org/10.1177/1477153512461896).

32.   DiLaura, D.L., Houser, K., Mistrick, R. and Steffy, G.R., The lighting handbook: Reference and application, (2011).

33.   Sierra-Pérez, J., Boschmonart-Rives, J., Dias, A.C. and Gabarrell, X., "Environmental implications of the use of agglomerated cork as thermal insulation in buildings", Journal of Cleaner Production, Vol. 126, (2016), 97-107. (https://doi.org/10.1016/j.jclepro.2016.02.146).

34.   Ucar, A., "The environmental impact of optimum insulation thickness for external walls and flat roofs of building in Turkey's different degree-day regions", Energy Education Science and Technology Part A-Energy Science and Research, Vol. 24, No. 1, (2009), 49-69.