Air Products Home

Ask the Experts Food

How can I optimize liquid nitrogen consumption of my cryogenic tunnel freezing system?

Orest Kochan
Food Technology Specialist

Optimizing freezer operation typically involves three variables—retention time, belt-loading, and production rate. Retention time must be adequate to freeze the product thoroughly, yet not so excessive as to overfreeze it, which leads to unnecessary consumption of refrigeration. Belt-loadings less than the required density will reduce the freezer output rate and increase liquid nitrogen/unit consumption. Similarly, excessive production rates can reduce the efficiency of a freezer. At increased rates, the freezer attempts to meet the additional heat load by increasing nitrogen flow rates. If excessive, this can reduce the freezer's ability to control temperature.

By identifying and correcting potential problems such as improper retention time, belt-loading, and production rates, you can often realize significant savings in liquid nitrogen consumption.
← Back to Food and Beverage
An error has occured, please fix the highlighted fields.
To request a quote or for more information about Air Products, please fill out the form below, and an Air Products representative will contact you shortly.
Please use the form below to contact us.

What can we answer for you?

  1. What kind of inquiry?

If you would prefer to contact us by phone, you can call any of our Air Products locations worldwide by visiting Worldwide Locations & Phone Numbers.


This site uses cookies to store information on your computer. Some are essential to make our site work; others help us to better understand our users. By using the site, you consent to the placement of these cookies. Read our Legal Notice to learn more.