Dear All,
I have installed three electrical heaters which gives outlet temperature 400 deg C each. Application of heater is to heat Air, NH3 and nitrogen up to 400 deg.
Further heated vapors are entered in small mixer then further vapors goes in to column but I am getting 400 deg C temperature at outlet of heater but once it reaches to mixer, mixer inlet temperature is showing only 150 deg C.
From heater to mixer pipes length is 5 mtr each. and 125 mm insulation has used (75 mm glass wool+50 mm rock-wool).
I am not able to understand how and why this much heat loss is happening through insulation, even heater consultant is also not able to getting this issue. Kindly help me to solve this issue.
NOTE: This set up is pilot set.
Thanks & Regards,
Amol M