Heat Insulation Characteristics of Multi Layer Materials for Greenhouse
2009
Chung, S.W., Pusan National University, Miryang, Republic of Korea | Kim, D.K., Pusan National University, Busan, Republic of Korea | Lee, S.G., Kyungpook National University, Daegu, Republic of Korea | Nam, S.H., Yeungnam College of Science and Technology, Daegu, Republic of Korea | Lee, Y.B., The University of Seoul, Seoul, Republic of Korea
Experiments and computations were conducted to investigate the heat insulation characteristics of multi layer materials for cultivation greenhouse. In case of the experiments, measurements of temperature were carried out with a K-type thermocouples and data logger to research the heat transfer in the experimental module generated by the heat source. A thermal conductivity meter, QTM-500 based on modified transient hot wire method was used to measure the thermal conductivity of multi layer materials. The numerical analyses were performed by commercial code CFX-11 according to the variation of multi layer materials without air layer. The experimental results showed that the heat insulation of multi layer materials was higher than single layer materials by 50~90%. It was found that the effect of heat insulation was raised by the combination of multi layer materials.
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