No Frost


Big benefits for food processors, large or small Niagara

  • Faster freezing for fresher products
  • No unscheduled downtime
  • Process air is conditioned and cleaned
  • Lowest cost per ton of refrigeration

The cost of frost - freezers with a traditional refrigeration system

No Frost BeforeTraditional Refrigeration Niagara No-Frost systems eliminate the need for costly defrost systems, typically using hot gas from the refrigerant compressor. Frost begins to form on conventional evaporators immediately in atmospheres containing even the smallest amount of moisture.

Frost formations reduce the capacity of an evaporator surface, increase fan horsepower, reduce circulated air volume and provide a harboring place for micro-organisms and other unwanted debris.

Defrosting of these coils results in downtime and necessitates redundancy of equipment because when units are "down for defrosting," other units must pick up the load.

No Frost BeforeDuring the defrosting process, moisture from melting ice is re-introduced into the conditioned space.

Also, refrigerant compressors used in hot-gas systems must be sufficiently oversized, depending upon the application to always have available hot gas for defrost.

A typical application in a freezer will require from 35 to 50% more energy to operate intermittent hot gas systems compared to Niagara No-Frost.

Niagara units operate continuous at the correct refrigeration load with no need for defrost provisions because the evaporator surfaces are kept clear of frost with a continuous spray of No-Frost liquid.

The advantages of Niagara's No-Frost - typical No-Frost freezers

No Frost AfterNo-Frost inhibits durable bacteria such as Listeria, Salmonella and Yersina. No-Frost liquids are also USDA and CFIA approved for use in food plants. As illustrated in the system configuration, Niagara No-Frost equipment serves to capture airborne bacteria and then, in combination with the Niagara concentrator permanently inhibit 99.999% of the above mentioned bacteria which are a cause of considerable concern in today's food processing and storage facilities. For a copy of this important report ask for RB-11-14-88.

Avoid structural damage due to thermal shock. Extreme and rapid temperature differences experienced in conventional defrost systems can cause structural failures of piping, vessels and evaporator coils causing potentially dangerous refrigerant leaks.