Category: Chemical Process Calculation.

Mean Heat Capacity & Pressure Effect

The use of mean heat capacities often facilitates the calculation of sensible-heat changes; mean heat capacity over the temperature range t1 to t2 is defined by…

The Heat Capacities of Solids

The heat capacity of a substance is related to the question of how much energy does it take to raise…

Measurement And Control

Inlet And Outlet Humidity

In Dryers In dryers, inlet humidity is a controlled parameter which affects the process, whereas outlet humidity is a monitoring…

Applying Humidity In Calculations

The needs of the practitioner involved in industrial drying are completely different to those of the standards expert. He is…

Humidity effects in dryers

Humidity affects the dryness of the solids it is in contact with. A dynamic equilibrium is set up between the…

Humidity and its definition

Humidity is a key factor in drying processes. It expresses the amount of vapour in the carrier gas stream (usually…

Absolute Humidity

Absolute humidity is the mass of water vapor divided by the mass of dry air in a certain volume of air…

Unsteady state energy and mass balances

What IS accumulation? Recall that so far in this text it has been assumed that all systems are at steady state,…

Bypass Stream

Bypass stream is a stream that skips one or more stages of the process and goes directly to another downstream…

Recycle and Bypass Processes

One of the more common processing configurations is the material recycle structure. These are particularly useful for reactors, where they…

Reactive Processes

Performing material balances on reactive systems is slightly more complex than for non-reactive systems N2 + 3H2 -> 2NH3 While we can…