Chilled Water Pipe Insulation Thickness Calculation Formula

The heat loss from steam per meter of pipe length has to be.

Chilled water pipe insulation thickness calculation formula.

Minumum insulation thickness preventing condensation for pipes parameters ambient temperature ta c 30 medium temperature t m c 6 to prevent condensation tube diameter mm 114 insulation material r flex st relative humidity 70 results thermal conductivity w mk 0 0375 dew point temperature t d c 23 9 minimum insulation. Heating cooling pro standard. When piping and equipment. For below ambient service by contrast the new pipe insulation thicknesses are not particularly noteworthy.

This calculation determines the ideal thickness of water piping insulation for efficiently and economically preventing a heat transfer from outside to inside and keeping the water transported within cool it does not determine the thickness of insulation designed to keep condensate or other fluids from losing heat. Indoor chilled water cooling and chilled water insulation ducting renovation expansion new construction insulation. The pipe size is 8 and the maximum allowable temperature of outer wall of insulation is 50 0 c. Thermal conductivity of the insulation material for the temperature range of the pipe can be taken as 0 04 w m k.

Hence insulation thickness ri rp 0 2302 0 1524 0 0777. D o outside diameter m in d i inside diameter m in ρ m density of piping material kg m 3 lb in 3. Cooling and heating load excel sheets free excel sheet for calculating pipe insulation thickness. Weight of pipe calculator.

The calculator is generic and can be used for both si and imperial units as long as the use of units are consistent. Chilled water pipes emit heat all the time so they must be insulated and this excel sheet calculates heat loss and insulation thickness. This calculator can be used to calculate the weight of a pipe with or without liquid. For example 1 in.

Insulating chilled water systems requires special attention. Calculate insulation thickness minimum value required for a pipe carrying steam at 180 0 c. Is sufficient thickness for all sizes on chilled water lines with an assumed operating temperature in the 40 f to 60 f range. Extra margin must be taken on insulation thickness as sometimes conducting heat transfer through insulation may become higher than convective heat transfer due to air on outside wall of insulation.