The Benefit of Precise and Accurate Temperature Control with Direct Steam Injection Heaters

Direct Steam Injection (DSI) Heaters are systems that inject steam directly into a liquid or slurry to heat it up to a desired temperature. They are widely used in various industries, such as food processing, chemical, pharmaceutical, pulp and paper, or general industrial process heating. DSI heaters offer many advantages over other heating methods of heat exchange such as shell-and-tube units, but one of the most important benefits is their precise and accurate temperature control.

Precise and accurate temperature control means that the DSI heater can deliver the exact temperature required for the process, within a very narrow range of variation. This tight temperature control is possible because steam contacts the process fluid immediately at the point of injection. There is no heat transfer barrier such as plate packs or tube bundles that can foul and limit transfer of BTUs.  


With a Pick Heater, as the steam enters the internal injection tube it acts against a spring-loaded piston to expose some or all the orifice pattern.  As the steam input varies due to load changes the piston modulates to adjust the number of exposed orifices providing rapid response to process changes. 

Steam Injection Heater cutaway

The benefits of precise and accurate temperature control with DSI heaters are many:

•    It improves product quality and safety by avoiding hot spots, burn-on, and overcooking or undercooking of the product. For example, in food processing applications, precise and accurate temperature control can ensure consistent cooking quality, flavor, texture, color, and nutritional value of the product. It can also prevent microbial growth and spoilage by achieving the required pasteurization or sterilization temperature.


•    With Pick DSI heaters, you can boost your productivity and flexibility by rapidly heating your process fluids. Whether you need to heat water, slurries, or any other liquid, Pick Heaters can deliver precise temperature control and instant response. Our heaters can handle fluids with varying viscosity, flow rate, pressure, and temperature without any fouling or scaling problems. 


Precise and accurate temperature control is a key feature of DSI heaters that makes them superior to other heating methods. If you are looking for a reliable, efficient, and cost-effective heating solution for your industrial process, you should consider using DSI heaters from a reputable manufacturer like Pick Heaters. We have decades of experience and expertise in designing and installing DSI heaters for various applications and industries. 


Contact us today to find out how we can help you achieve your heating goals.