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Insulation – Terms, Definitions & Formula

TRADE OF Industrial Insulation PHASE 2 Module 4 Insulation Materials, Science and Application UNIT: 4 Insulation Terms, Definitions & Formula Produced by In cooperation with subject matter expert: Michael Kelly SOLAS 2014 Module 4 Unit 4 Industrial Insulation Phase 2 Insulation Terms, Definitions & Formula Revision , August 2014 Table of Contents Introduction .. 1 Unit Objective .. 2 Units of Measurement and Terms Used in the Insulation Industry .. 3 1. Basic Units .. 3 Units of Measurement for Thermal Conductivity and Thermal Resistance .. 3 Terms and Definitions Used In the Insulation 3 Standard Insulation Values and Symbols .. 5 Thermal Conductivity or K Factor .. 5 Thermal Resistance or R Factor .. 5 Thermal Transmitting or U Value .. 6 Thermal Conductance or C Factor .. 6 Information Gathering .. 7 Insulation and K Factor .. 7 Vapour Barriers .. 7 Heat Loss Calculations.

Insulation is typically the largest resistance component in a heat loss system. The better the insulation resistance, the longer it takes to reach thermal equilibrium. Factors such as insulation type, thickness and operating temperature conditions affect overall insulation resistance. The K factor determines the efficiency of insulation.

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