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DOE-2 Reference Manual Version 2.1 - DOE2.com

DOE-2 Reference Manual Version 2.1 - DOE2.com

DOE-2 Reference Manual Version 2.1 - DOE2.com

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RESISTANCEExamp les:As an alternative to the preceding four keywords, this keywordmay be entered. It is used to specify the thermal resistancefor a material in hr-ft2-OF/Btu. A RESISTANCE entry shouldbe used for a material with no significant thermal capacitance,like an air gap.1. The following instruction enters the thermal properties of afour-inch-thick layer of brick:BRICK-4IN = MATERIALTHICKNESS = 0.333CONDUCTIVITY = 0.4167DENSITY = 120.0SPECIFIC-HEAT = 0.2 •.2. Because brick has fairly high heat capacitance, a RESISTANCE entry wouldnot be appropriate for use in <strong>DOE</strong>-2. However, a one-inch-thick air gapwould result in the following instruction:AIR-LAYER = MATERIALRESISTANCE = 0.90 ..III .74 (Revised 5/81)

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