Calculation and Experimental Evaluation of the Thermal Resistance of a Structure with Reflective Insulation

conference paper

English

As a reason of increasing requirements on thermal insulation properties of the exposed building envelope, reflective insulations are among kind of modern thermal insulation materials ones, which can significantly increased thermal insulation performance if their application is correct. This thermal insulation reduces the heat transfer by radiation. Conjunction of lowemissivity surface of the reflective insulation and air layer is important to account. This article is focused on the determination of thermal properties of reflective insulation and values of thermal resistance measured by Hot Box method using heat flow meter are presented here. As part of determination of thermal properties of reflective insulation by experimental methods, the test element used to measure the thermal resistance of an insulated air cavity had to be created in accordance with the normative requirements. Part of this article is determination of the thermal resistance by the calculation of derived physical relations and comparison with values of the laboratory measurement.

Reflective insulation; Hot box; Radiation heat flow rate; Emissivity; Thermal resistance

KALÁNEK, J.; OSTRÝ, M.; ŠTEFFEK, L.

2014

14. 2. 2014

1022-6680

Advanced Materials Research

899

2

Swiss Confederation

374

380

7