For one of our project,We wanted to heat a substance in heat exchanger and wanted to know which utility is efficient ? Is it steam or Hot water.
I went through various blogs which says steam heating is efficient since it contains Latent heat.
My concern is to heat 25000kg/h of substance with specific heat of 4.18 kJ/kg K from 15 to 75 C, required energy is 1791kW.
which is efficient source of utility ? If i use hot water at 85 C entering heat exchanger, or LP steam at 4 bar.
If i use Hot water, i need to first heat tap water from 25 C to 85 C in Hx using steam as utility.
How to justify energy requirement form steam over hot water.