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Development of a low-cost movable hot box for a preliminary definition of the thermal conductance of building envelopes
Building and Environment ( IF 7.4 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.buildenv.2020.107034
Alberto Barbaresi , Marco Bovo , Enrica Santolini , Luca Barbaresi , Daniele Torreggiani , Patrizia Tassinari

Abstract In the recent years, very promising envelop solutions are available for energy-efficient buildings. Particular interest is risen by the use of innovative natural or bio-based materials. Even if, in some cases, they are wastes coming from industrial or agricultural processes, they can be effectively applied as by-product for the creation of new more sustainable insulation panels and composite materials. In this context, the thermal characterization of a new building material, actually needs of very expensive equipment, with fixed installation, requiring expensive usage and periodic calibration and maintenance. Development of alternative methodologies to determine thermal properties, even in a preliminary way, seems important in order to reduce the costs and to make the tests accessible to wider number of researchers. This paper describes the development and the validation test of a low-cost movable hot box suitable for a preliminary assessment of the thermal conductance of wall elements and insulation panels with dimensions about 1 m × 1 m. The prototype of the hot box has been realized and then tested in the conductance range 0.5–10 W/(m2 K) by adopting two commercial panels used in the building sector. The availability of a low-cost, low-size and moveable equipment allowing a quickly and preliminary assessment of the thermal characteristics of a by-product is useful to understand if the material has suitable properties for future re-use. All this allows the reduction of laboratory time and costs needed for the thermal characterization tests.

中文翻译:

用于初步定义建筑围护结构热导的低成本可移动热箱的开发

摘要 近年来,非常有前途的围护结构解决方案可用于节能建筑。使用创新的天然或生物基材料引起了人们的特别兴趣。即使在某些情况下,它们是来自工业或农业过程的废物,它们也可以作为副产品有效地用于创造新的更可持续的绝缘板和复合材料。在这种情况下,新建筑材料的热表征实际上需要非常昂贵的设备,固定安装,需要昂贵的使用和定期校准和维护。开发替代方法来确定热性能,即使是以初步方式,对于降低成本并使更多研究人员可以进行测试似乎很重要。本文描述了一种低成本可移动热箱的开发和验证测试,该热箱适用于初步评估尺寸约为 1 m × 1 m 的墙体元件和隔热板的导热性。热箱的原型已经实现,然后通过采用建筑领域使用的两种商用面板在 0.5-10 W/(m2 K) 的电导范围内进行测试。低成本、小尺寸和可移动设备的可用性允许对副产品的热特性进行快速和初步评估,有助于了解材料是否具有适合未来重复使用的特性。所有这些都可以减少热特性测试所需的实验室时间和成本。
更新日期:2020-08-01
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