This calculator estimates the performance of an insulated vertical flat surface given the operating temperature, the ambient temperature, and other details about the system.<\/p>\n
Instructions<\/h4>\n\n- Line 1. Enter the surface area of interest<\/li>\n
- Line 2. Enter average operating (process) temperature for the period of operation<\/li>\n
- Line 3. Enter average ambient temperature for the period of operation<\/li>\n
- Line 4. Enter average wind speed for the period of operation (if unknown, use 1 mph for indoor, 8 mph for outdoor)<\/li>\n
- Line 5. Select an insulation material. Note: Calculator does not screen for material temperature limitations - use caution<\/strong>.<\/li>\n
- Line 6. Enter a cost multiplier to modify the default installed costs (e.g. enter 1.10 to increase costs 10%)<\/li>\n
- Line 7. Enter the effective emittance of the exterior surface (see MIDG>Design Data>Table 1 for guidance)<\/li>\n
- Line 8. Enter the expected life of the insulation system in years<\/li>\n
- Line 9. Enter the number of hours per year of system operation (e.g. 8760 for full year operation)<\/li>\n
- Line 10. Enter the conversion efficiency of the system in percentTypical conversion efficiencies for various systems are:
\n\n\n\nFossil fuel boilers (Non-condensing)<\/td>\n 65 - 85%<\/td>\n<\/tr>\n \nFossil fuel boilers (Condensing)<\/td>\n 80 - 95%<\/td>\n<\/tr>\n \nElectric resistance boilers<\/td>\n 92 - 96%<\/td>\n<\/tr>\n \nElectrically operated chillers<\/td>\n 300 - 700%<\/td>\n<\/tr>\n \nAbsorption chillers<\/td>\n 60 - 100%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n- Line 11. Select the fuel used<\/li>\n
- Line 12. Enter cost of fuel if known or use default value<\/li>\n<\/ul>\n
Assumptions<\/h4>\n\n- One dimensional, steady state heat transfer<\/li>\n
- Base structure is a vertical flat steel surface<\/li>\n
- Thermal conductivity based on ASTM Specification Values<\/li>\n
- Installed costs of insulation are from industry sources and represent single layer installations<\/li>\n
- Installed costs include aluminum jacketing but do not include vapor retarders or vapor sealing<\/li>\n
- Fuel content, emissions and typical fuel costs are from U.S. Energy Information Administration<\/a><\/li>\n
- Emissions are in Metric Tonne per year (MT\/yr)and are are assumed to be at the facility (except for electricity which are are at the power plant)<\/li>\n<\/ul>\n
Note<\/strong>: NA means Not Available<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\t\t
\n
Fossil fuel boilers (Non-condensing)<\/td>\n | 65 - 85%<\/td>\n<\/tr>\n |
Fossil fuel boilers (Condensing)<\/td>\n | 80 - 95%<\/td>\n<\/tr>\n |
Electric resistance boilers<\/td>\n | 92 - 96%<\/td>\n<\/tr>\n |
Electrically operated chillers<\/td>\n | 300 - 700%<\/td>\n<\/tr>\n |
Absorption chillers<\/td>\n | 60 - 100%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\nAssumptions<\/h4>\nNote<\/strong>: NA means Not Available<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\t\t |