Refrigeration
Refrigeration is a process of moving heat from one location to another.
The work of heat transport is traditionally driven by mechanical work, but can also be driven by heat, magnetism, electricity, laser and other means.
Refrigeration has many applications, including, but not limited to, household refrigerators, industrial freezers, cryogenics, and air conditioning.
Fish finger box
Fish fingers are typical frozen food products. Frozen products do not require any added preservatives because microorganisms do not grow when the food temperature is below minus 9.5 degrees Celsius. Mechanical freezers were the first to be used in the food industry.
They function by circulating a refrigerant, normally ammonia, around the system, which withdraws heat from the food product.
The heat is then transferred to a condenser and dissipated into air or water. Frozen food packaging must maintain its integrity throughout the processes of machine filling, sealing, freezing, storing, transporting, thawing and often cooking.
We’re upgrading our systems, and this includes changes to our customer and member account log in, MyIET. It’s part of our big picture plan to deliver a great experience for you and our wider engineering community.
Whilst most of our websites remain available for browsing, it will not be possible to log in to purchase products or access services from Thursday, 17 April to Wednesday, 30 April 2025. Our Member Relations team is here to help and for many of our services, including processing payments or orders, we’ll be able to support you over the phone on +44 (0)1438 765678 or email via membership@theiet.org.
We apologise for any inconvenience this may cause and thank you for your understanding.
For further information related to specific products and services, please visit our FAQs webpage.