Developing a Didactic Thermal Chamber for Building Envelope Material Testing
In this paper, we present a didactic thermal chamber. This chamber has been developed for educating architecture students about building envelopes and their effects on resident comfort. The chamber is equipped with an instrumentation system capable of recording temperature data for different geometric points on the chamber. The chamber was successfully used to compare the thermal transmittance behavior of building blocks using different compositions. Results showed that adding polystyrene aggregate in the traditional cavity concrete block increases its thermal resistivity by 50%. With the developed apparatus, students are able to understand and visualize the thermal behavior of buildings.
KeywordsThermal chamber Building envelope Instrumentation system Thermal resistivity U-value
The Authors would like to thank the HCR (Higher Center of Research) of the Holy Spirit University of Kaslik (USEK) and the CNRS-L (The National Council for Scientific Research–Lebanon) for their financial support to the project.
- 1.Rajasekar, E., Ashok, K., Ramachandraiah, A.: Thermal performance of building envelops. In: Encyclopedia of Sustainable Technologies, Anonymous. Elsevier, pp. 169–188 (2017)Google Scholar
- 2.Nehme, B., Akiki, T.: Implementing a didactic photovoltaic energy laboratory for developing countries. In: 2016 3rd International Conference on Renewable Energies for Developing Countries (REDEC), pp. 1–4 29 Sept 2016Google Scholar
- 4.Mirrahimi, S., Mohamed, M.F., Haw, L.C., Ibrahim, N.L.N., Yusoff, W.F.M., Aflaki, A.: The effect of building envelope on the thermal comfort and energy saving for high-rise buildings in hot–humid climate. Renew. Sustain. Energy Rev. 53, 1508–1519 (2016). http://www.sciencedirect.com/science/article/pii/S1364032115010254CrossRefGoogle Scholar
- 5.Gaspar, K., Casals, M., Gangolells, M.: A comparison of standardized calculation methods for in situ measurements of façades U-value. Energy Build. 130, 592–599 (2016). http://www.sciencedirect.com/science/article/pii/S0378778816307824CrossRefGoogle Scholar
- 6.Nehme, B., Jelwan, J., Youssef, R., Zeghondy, B.: Infrared thermography for assessing thermal bridges and humidity in lebanese building components. In: 2018 4th International Conference on Renewable Energies for Developing Countries (REDEC), pp. 1–6 (2018)Google Scholar
- 7.Nuwahid, R., Moucharrafie, F.: Results obtained from the conductivity tests at steady state on tiles (dimensions: Height × Length × width = 3 cm × 30 cm × 30 cm consecutively) of the same mix (ingredients) and density of the above given values in Table 1. Executed at the mechanical engineering laboratories at the American University of Beirut, using the Hilton Conductivity MachineGoogle Scholar
- 8.Engineering ToolBox. Air —Thermal Conductivity [Online]. https://www.engineeringtoolbox.com/air-properties-viscosity-conductivity-heat-capacity-d_1509.html
- 9.Li, R.S.: Optimization of thermal via design parameters based on an analytical thermal resistance model. In: ITherm’98. Sixth Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (Cat. No.98CH36208), pp. 475–480 (1998)Google Scholar