National Physical Laboratory

Measuring the thermal performance of insulation utilising reflective surfaces

Insulating productsThere are two basic ways of measuring the thermal performance of reflective insulation in a hot box apparatus:


1.       Measure the thermal resistance of an air cavity insulated with the product

Thermal resistance of air cavity

Click here to download detailed diagram PDF File


2.       Measure the U-value of a representative structure insulated with the product

Thermal transmitance U-value

Click here to download detailed diagram PDF File


Contact

Customer Service tel: +44 20 8943 6245
E-mail: thermal_enquiries@npl.co.uk

Last Updated: 26 Jan 2012
Created: 28 Aug 2007