Date of Award
Master of Science (MS)
Dr. Maatouk Khoukhi
Dr. Ahmed Hassan
Dr. Young Ki Kim
The building sector is moving towards energy-efficient design "low energy consumption". The development of bio-based thermal insulation materials contributes strongly to this approach. The implantation of these materials in the new designed buildings will have an excellent impact in reducing the energy consumption and subsequently saving the non-renewable resources depletion and in decreasing the waste generation.
In this research, the energy performance of a new bio-insulation material prepared from rice will be evaluated. Focusing on its physical and thermal properties such as thermal conductivity and fire reaction evaluation. The developed insulation sample has been made by heating a fixed quantity of rice grains in a sealed chamber at high applied temperature and pressure to have the maximum expansion of the grains.
Initially, a set of screening experiments were carried out to reveal the best rice type and the direction of the optimal domain of the other parameters. In terms of puffing ability, the short grains showed a superior performance at different levels. Thus, the material optimization has been continued using the short rice grain.
The three major factors which affect the puffing ability and thermal conductivity of the insulation sample material production were sample weight, temperature, and moisture ratio. These factors were operated in the range of 15-18 g, 260-270ºC and 12- 15% respectively. Using Response surface Methodology (RSM) in Minitab 17.0 application, a total of 15 runs for optimizing the three individual parameters in the central composite design (CCD) were undertaken to estimate the minimum ratio of the required response. The best-characterized sample was 12 mm in thickness with an 8×8 cm cycle shape, 0.04971 W/(m.K) thermal conductivity value, and V1 fire reaction classification.
A comparison between the developed bio-based insulation material and the common insulation material used in the UAE building sector mainly polystyrene was introduced. The new bio-based insulation material component gives a big distinction as it is cheap with huge commercialization potential, environmentally friendly, magnificent stability under fire, no toxic gas emission, and similar thermal performance of the common insulation materials. These advantages make our developed bio-based insulation material a strong competitor in the thermal insulation market.
Dar Saleh, Abeer Fuad Othman, "THERMAL ENERGY ASSESSMENT OF NEW CONSTRUCTED BIO-BASED INSULATION MATERIAL APPLIED IN BUILDINGS" (2020). Architectural Engineering Theses. 7.