It is good to note that there has been a push to make use of the benefits of ammonia while decreasing the risks which has led to the creation of a low-charge packaged refrigeration systems that make use of ammonia and a secondary refrigerant fluid like glycol. This will enable facilities to reap the merits of the excellent thermodynamic characteristics while decreasing the charge and risk. A packaged refrigeration system is a cooling system that is built offsite, mounted on a steel base then delivered to the premises as a self-contained system that can be turned on and off. It is good to highlight that due to the fact that the packaged refrigeration system uses secondary refrigerants that isolate the ammonia to the machine room the machine uses only a pound of ammonia per every ton or refrigeration thus decreases the charge of the facility.
The truth is that synthetic refrigerants are being phased out from food making facilities and pressure from global organizations, and government laws are making it compulsory that all food factories use natural refrigerants like ammonia and carbon dioxide. Thus cold storage facilities are now using low-charge packaged refrigeration systems that use natural refrigerants while reducing the environmental impact while decreasing the energy costs.
It is good to note that there are many benefits of packaged refrigeration systems such as enhanced safety. Secondary refrigerant systems reduce the total amount of primary refrigerant as ammonia is isolated to the machine room thus reducing the risk to the workers in case it leaks. This also means that there will be no ammonia in the process space thus there is no need for ammonia detection in various rooms.
Every low charge packaged unit is made up of refrigeration equipment that is mounted on a structural base that is complete with interconnecting valves, piping, and instruments. It is worth stating that due to the fact that the refrigeration components are put and compacted into a single unit these refrigerators take up smaller space in the facility thus the facility will not need a large machine room. A known fact is that carbon dioxide and ammonia are way cheaper than hydrofluorocarbons and other refrigerants and due to the lower energy cost thus low-charge packaged refrigeration systems at this website are cost competitive.
An amazing fact is that ammonia has been approved as a refrigerant of choice in the beverage and food industry for a century, and carbon dioxide is another natural refrigerant that is found naturally in the environment as a renewable resource. Both refrigerants were utilized even before the introduction of hydrofluorocarbons, and they still remain safe alternatives at this site to this day.
For further reading/watching, please visit https://en.wikipedia.org/wiki/Refrigeration .