Czajkowski Łukasz, Kocewicz Robert, Weres Jerzy, Olek Wiesław
Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, ul. Wojska Polskiego 28, 60-637 Poznań, Poland.
VestaEco Composites sp. z o.o., ul. Domaniewska 37/2.43, 02-672 Warszawa, Poland.
Materials (Basel). 2022 Jan 29;15(3):1073. doi: 10.3390/ma15031073.
Cereal straw is an environmentally friendly, rapidly renewable, and sustainable raw material for manufacturing insulating panels for building engineering. Credible data on thermal properties of insulating panels are crucial for appropriate and accurate design of building envelopes. The objective of the study was to determine and validate thermal properties of the panels made of cereal straw. Specific heat was measured with the calorimetric method. Thermal conductivity was determined with the inverse method and Isomet 2114 instrument, respectively. Both approaches accounted for the temperature influence. The specific heat of the panels was as high as 1600 J/(kg·K), while the thermal conductivity varied in the range from 0.025 to 0.075 W/(m·K) depending on the applied experimental method. The studied properties were validated and their credibility was assessed. High accuracy of heat transfer modeling was obtained for the properties measured with the calorimetric method and identified with inverse modeling.
谷物秸秆是用于制造建筑工程隔热板的一种环保、可再生且可持续的原材料。隔热板热性能的可靠数据对于建筑围护结构的合理与精确设计至关重要。本研究的目的是测定并验证由谷物秸秆制成的隔热板的热性能。采用量热法测量比热。分别用逆方法和Isomet 2114仪器测定热导率。两种方法都考虑了温度的影响。隔热板的比热高达1600 J/(kg·K)，而热导率根据所采用的实验方法在0.025至0.075 W/(m·K)范围内变化。对所研究的性能进行了验证并评估了其可信度。对于用量热法测量并用逆模型确定的性能，获得了高精度的传热模型。
