Air Duct Insulation Thickness Calculation

3 2sufficient thermal insulation thickness tm 6 c φ 65 td 22 8 c ta 30 c r flex st kalınlık 9 mm ts 23 6 c td 22 8 c thermal insulation material with a high µ value no condensation.

Air duct insulation thickness calculation.

Enter the length of the duct run in feet. Local resistance pressure loss general calculation. Mass air flow rate unit converter. How often do you think you get the full labeled r value.

R 6 duct insulation 6 305 btu hour 0 53 ton r 4 2 duct insulation 7 948 btu hour 0 66 ton the numbers are even higher for the additional heating load. Some other factors to consider. Air state calculation during heating and heater output. Air and is a useful tool in air conditioning calculations.

Ductwork seal classes ductwork prone to air leakages. Duct wrap insulation reduces heat loss or gain through duct walls conserving energy. Air handling ductwork cross section design. A diffusion tight application is a must minimum insulation thickness 7 6 mm tube diameter 25 4 mm.

The duct insulation r values i mentioned above are what s on the product label. The sharp turns cause a large amount of recirculation regions within the ducts preventing the air from moving smoothly. This chart can be. Ductwork support ductwork support and recommended.

Heat conduction and thermal resistance. Ventilation systems for ventilation and air handling air change rates ducts and pressure drops charts and diagrams and more. The tee section at the far end of the main duct causes the air to suddenly divide and change direction. There is a high amount of backflow here which again increases the static pressure and reduces the amount of air delivery.

Ductwork specific pressure loss calculation. General formula to calculate minimum insulation thickness required to prevent condensation t k r t1 t2 t3 t1 where t insulation thickness in k thermal conductivity r surface temperature resistance t1 dew point temperature. Thermal insulation and ductwork heat loss calculation. Enter the r value of the selected duct insulation.

Enter the ambient temperature the average temperature of the air surrounding the duct line 3. Enter the flow rate of the air carried by the duct in cubic feet per minute. Hvac calculations and duct sizing gary d. Fibrous glass duct wrap insulation is designed for application to the exteriors of commercial and residential sheet metal heating ventilating and air conditioning ducts and plenums operating at temperatures between 40 f 4 c and 250 f 121 c.