Tunnel Freezers and Programmable Thermostats


A tunnel freezer is a cryogenic freezer that cools products on a conveyor belt. It uses a variety of cooling methods, including gas,ventilated air, and molds, for freezing products such as food, pharmaceuticals, and cosmetics. A tunnel freezer can also be equipped to process IQF (Individually Quick Frozen) products.

A common type of tunnel freezer is a straight-belt LN2 tunnel. It takes advantage of the refrigeration that comes from converting liquid nitrogen into cold vapor. It blows this cold vapor across the product and then exhausts it at the exit end of the tunnel. This process is known as vapor stripping, and it makes efficient use of the LN2 supply.

Another type of tunnel freezer is a flat-belt CO2 tunnel. It works in the same way as a conventional straight-belt LN2 tunnel, except that it uses CO2 instead of LN2. When piped to the tunnel, liquid CO2 instantly expands into a mixture of gas and tiny dry ice solid particles, which are commonly called dry ice snow. The snow sublimates into a gaseous form and produces the same refrigeration effect as the vaporized liquid nitrogen.

Both types of tunnel freezers are ideal for IQF freezing and can be custom-engineered to meet specific production needs. They can be connected to a range of cryogenic infrastructure, including storage dewars for the freezer’s required gas supply. Demaco has extensive experience connecting and installing all types of tunnel freezers.

If you’re considering a new freezer, you may be wondering about the advantages of choosing a programmable thermostat. These thermostats can help you save money and energy, while still achieving your desired temperature. Unlike a traditional thermostat, which is set to the same temperature all the time, a programmable thermostat allows you to change the settings according to your schedule. This can be a great choice for a commercial or industrial application, where you want to keep the environment cool while maintaining a consistent temperature throughout your facility.

There are many different kinds of programmable thermostats, and each has its own benefits and drawbacks. Some are designed for a single room, while others can be used throughout your entire house or office building. It’s important to choose the right thermostat for your unique situation.

When using a programmable thermostat, it’s important to remember that changing the settings will only take effect once you actually press the button to make the change. Once you release the buttons, your program will resume its original setting, so it’s important to set the system properly.

A programmable thermostat can save you money by lowering the heating or cooling temperature when no one is at home. This can be especially beneficial during peak cooling seasons, when it’s possible that no one will even be in the home for an extended period of time. However, it’s important to discuss your options with a qualified HVAC professional to ensure that you get the best system for your home or business.

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