Controlling or, better still, eliminating bacterial activity is one of the most difficult tasks in the food sector. Chilling and freezing are two of the most efficient weapons in the battle against microorganisms.
When the temperature is reduced below the freezing point, microorganism growth slows dramatically. This is related not only to a drop in product temperature but also to a drop in free liquid water activity, depriving microbes of the water they require to function.
The possibility of bacterial development is reduced when food is chilled. Chilling a product quickly (also known as flash freezing or cryogenic freezing) reduces the danger even further.
Microorganisms thrive in the danger zone of 140–41 degrees Fahrenheit. Temperatures between 125 and 70F allow for the fastest development of microorganisms in this range. As a result, food must move swiftly across this region.
Guidelines for food cooling
A cooling system is something like a refrigerator. Any cooling system’s goal is to transfer thermal energy so that things stay cool. A refrigerator transmits thermal energy from the refrigerator’s chilly air to the kitchen’s warm air. If you’ve ever noticed how warm the back of a running refrigerator gets, you realize how much thermal energy it emits into the room.
Controlling bacterial growth is one of the most difficult tasks in the food sector. When handling perishable food, rapid chilling is a procedure that swiftly lowers temperatures, eliminating these and other dangers.
This industrial chilling system is extensively utilized and offers several advantages for businesses that need to keep perishable commodities on a regular basis.
The sort of cooling you require is determined by the objective. If you have things that need to chill quickly, vented cooling is the ideal option. A static cooling system, on the other hand, is the ideal alternative if you want a more energy-efficient cooling system with a low noise level. Here are some advantages of both cooling systems so you can choose wisely-
Advantages and disadvantages of static cooling
The most significant benefit of static cooling is that it uses less energy than vented cooling. It merely includes the most essential components for cooling a refrigerator or cooler’s enclosed interior, and they are the only ones that need electricity. It’s also the cooling mechanism found in the first refrigerator models. As a result, it is reliable and has been thoroughly tested and refined over time.
Another advantage of static cooling systems is that they are quieter than vented cooling systems. Furthermore, freezers and coolers using this technique are often less expensive than those with a vented cooling system.
Moisture absorption is the most significant drawback of a static cooling system. In a refrigerator or cooler with a static cooling system, there is no air movement. Because there is no air movement, moisture in the air can transform into water, which can then develop into frost. If the pace of static cooling is faster than the rate of heat production, it may take a long time for these commodities to cool down enough to keep them fresh.
Furthermore, food safety necessitates the use of cooling or refrigeration. Refrigeration, according to the FAO (Food and Agriculture Organization of the United Nations), can delay or stop bacterial development altogether. As a result, if food does not cool quickly enough, it might become an issue.
Advantages and disadvantages of ventilated cooling
In a ventilated cooling system, the installation of a fan motor reduces the cooling time. Strawberries, for example, must be quickly chilled after picking to maintain their freshness. They can’t be chilled quickly enough unless they’re kept in a cooler or refrigerator with a vented cooling system. One of the most significant advantages of a vented cooling system is this.
Another notable feature is its capacity to reduce or eliminate frost on the interior walls of a refrigerator or cooler’s enclosed compartment. The need to defrost the refrigerator or cooler is reduced or eliminated when there is little or no frost.
Ventilated cooling refrigeration systems require extra components such as fans and an evaporator. These components necessitate the use of additional energy. Thus, vented cooling systems utilize more energy than static cooling systems. Unfortunately, because a cooler or refrigerator with a vented system has more components, the cost of ownership is greater.
Now one might ask about the benefits of rapid chilling process, so here they are-
- Freshness: Rapid cooling helps you to keep the food’s natural characteristics for longer. The crystals that develop as a result of the freezing procedure have no effect on the fragrance, freshness, or nutrient content of the foods.
- Bacteria killing: Deep freezing reduces the chance of germs developing. This procedure will enable you to meet the safety criteria for your items and avoid any food poisoning or contamination problems.
- Less cost: Rapid freezing is dependable, allowing businesses to provide high-quality items to their clients. You won’t have to worry about breaching safety standards or endangering your clients if you use expert and appropriate equipment. Blast freezers are high-efficiency cold storage equipment that may also help you save money and better prepare for demand.
Therefore, you might be thinking which cooling system included refrigerator to choose from. Here are some more ideas about both the systems in case of confusions-
Picking a static cooling system
A static cooling system is ideal for chilling food that can be kept cool for an extended period of time outside of a cooled environment. It’s perfect for chilling food that’s meant to be served cold rather than cooling food to preserve or keep it fresh. It may also be used for food that has to be slowly chilled.
Picking a ventilated cooling system
For product like strawberries, which require quick chilling to maintain freshness, a vented cooling system is ideal. It’s also ideal for goods that need to be quickly chilled after being harvested at a high temperature.
A vented cooling system is especially perfect for busy manufacturing lines where defrosting is difficult to organize. Consider employing a vented cooling system instead of defrosting on a regular basis if it reduces productivity.