Design upon ‘batch’: thermal duty changes the rules in pharma

Thermoregulation in the pharma and chemical industries presents unique challenges, particularly regarding the standard rules used to size heating and cooling systems. Operations in the pharmaceutical and fine chemical sectors are typically batch-based, involving short periods of intense production followed by cleaning, recipe changes, and line restarts.

Illustrative image related to the engineering of TCUs for the pharma and chemical sectors, where system sizing must be based on the batch production methods characteristic of these industries.
For a TCU (Temperature Control Unit), this entails rapid temperature ramps, continuous thermal shocks, and fluctuations in heat transfer fluid volume. In such cases, sizing based on standard rules is no more effective. A practical example is the design of the expansion vessel: in these chemical and pharmaceutical applications, the fluid undergoes massive expansion as temperatures shift from -15°C to over 140°C.

For instance, a theoretical calculation based on standard parameters suggested a 1.800-liter tank for a particular customer application; however, by analyzing the fluid’s actual transient dynamics, we optimized the size it to just 1.000 liters.

The result was impressive: a 44% space saving on the skid while maintaining maximum safety, even during the most extreme thermal peaks.