Steam Consumption Calculation Verification

Your calculation is correct, as far as it goes; but, remember you will also have to determine and add the amount of heat transfer loss from the vessel during the heating cycle to get the total energy required.

There will be less heat transmission due to fouling of the steam/water inside the tube as well as water/vessel side. Hence, there will be less amount of heat transferred. Consideration of the heat loss through the tube/vessel open surface to atmosphere should be taken into account.

Dear Mr. combined,

Your calculation is almost right.

For water Sp.Heat is 1.0 and heat required by you is ok. But for polyester fabric, to calculate the Heat required, the Sp. Heat is involved since

Heat required = Weight x Sp.Heat x Temp.Rise

Asper your calculation the Sp. Heat for polyester is 1, which may not be the case. It may vary from 1.1/Deg.K to 2.11/Deg.K. Hence the heat required will be more than what you have estimated.

DHAYANANDHAN.S

Dear MR.Dhayanandhan, Thank you for the valid point. Also in my calculation the most of amount of energy required is @ 100C for the latent heat. IF the vessel was pressurised with 3 bar compressed air and sealed the boiling point would go above 130 C and I would just have to apply 560000+ 280000 = 840000 Kcal instead of 560000 +4312000+280000=5152000. So I should be saving = 4592000 Kcal. Assuming latent heat avaiable at 539 Kcal per Kg of steam this is equivalent to 8520 KG. Please verify.
Thank you.

Is this yarn or fabric on a perforated spool that requires frequent reversal of flow direction?

This is fabric