Industrial Process Cooling: What Engineers Need To Know August 4, 2026 Industrial process cooling is fundamentally different from commercial HVAC. The loads are often larger and more sustained, the tolerance for process temperature excursions is narrow, and the consequences of cooling failure go beyond discomfort — they stop production, damage equipment, and create safety concerns. Designing industrial cooling correctly requires starting with the process, not the equipment catalog. Defining Industrial Process Cooling Process cooling removes heat generated by industrial operations — chemical reactions, metalworking, plastics processing, electronics manufacturing, pharmaceutical production, and dozens of other applications — to maintain stable operating conditions. Unlike comfort cooling, process cooling must often hold precise temperatures over extended periods, sometimes continuously. Process Category Typical Cooling Requirement Chemical reactions (exothermic) Remove reaction heat at a rate that controls temperature; often precise setpoint with narrow tolerance Metalworking / machining Coolant temperature stability affects tool life, surface finish, and dimensional accuracy Plastics injection molding Mold temperature control within 1-2 degrees F affects cycle time, surface quality, and dimensional consistency Electronics manufacturing Component temperature during soldering and testing; often 65-75 degrees F with tight control Pharmaceutical and biotech Process and equipment cooling to cGMP standards; documentation required; cleanroom conditions Food and beverage processing Product temperature control; sanitary design; HACCP compliance Laser cutting and welding Laser head and optics cooling; typically chilled water or glycol circuits Key Engineering Parameters Every process cooling specification should define these parameters before equipment is selected: Coolant supply temperature required: what temperature must the process see? Note that chilled water or glycol temperature at the chiller outlet is warmer than temperature at the process — account for line losses. Coolant flow rate required: calculated from heat load and allowable temperature rise (delta-T) across the process: flow = heat load / (specific heat x delta-T x density) Heat load: total BTU/hr or kW to be removed; must reflect peak load, not average, for sizing Temperature precision required: +/- 5 degrees F is manageable with basic controls; +/- 1 degree F requires process chillers with precise temperature control capability Coolant type: water, glycol/water mixture, or specialty process fluid? Food and pharmaceutical applications may require food-grade glycol or deionized water. "Industrial process cooling failures are always the most expensive. You don't just lose cooling — you lose production, you may scrap product, and in some cases you lose equipment. The investment in proper system design pays for itself very quickly."— Paul Johnson, G&D Chillers Sizing Process Chillers Process chillers are sized differently than HVAC chillers because the load characteristics are different: Process loads are often steady-state (continuous) rather than varying with outdoor temperature Peak loads may be significantly higher than average (batch operations, startup transients) Process cooling often operates year-round regardless of outdoor temperature Redundancy is typically required for production-critical applications Air-Cooled vs. Water-Cooled in Industrial Settings Air-cooled process chillers are the most common choice for industrial applications where: No cooling tower or process water is available or desirable Installation flexibility is important — air-cooled units can be placed outdoors without water connections Maintenance simplicity is valued — no tower water treatment, no basin cleaning, no Legionella management Water-cooled options (cooling towers) are preferred when heat loads are very large, outdoor space is constrained, or extremely high efficiency is required. Frequently Asked Questions What is the typical temperature precision available from industrial process chillers? Standard industrial chillers hold supply temperature within +/- 2-5 degrees F. High-precision process chillers (laser cooling, semiconductor, pharmaceutical applications) can achieve +/- 0.1-0.5 degrees F with appropriate controls and system design. Can I use my HVAC chiller for process cooling? In some cases, a shared chilled water plant serves both comfort cooling and process loads — but the systems have very different operating characteristics. Process loads often run year-round at stable load; HVAC is seasonal and variable. Sharing infrastructure requires careful design to ensure process temperature is maintained when HVAC loads vary. > Engineer a process cooling system for your industrial application -> Contact us