Refrigeration is an important part of every day life. Whether it be keeping your groceries cool or yourself cool from the summer heat, most of us in the Western world are exposed to refrigeration every day. This shouldn’t be a surprise as our ancestors discovered the importance in refrigeration to keep meat, dairy and many other items from spoiling. Keeping food fresh longer kept them from spending more [money] on fresh food and more importantly kept them from becoming ill from to eating spoiled food. Most of us take these luxuries for granted, but the innovation in refrigeration has made our lives a lot more efficient.
The early years of refrigeration stem from the ice box. This was the one of the first forms of refrigeration and was nothing more than the name implies; a box to store ice and goods. Insulation in the box (originally made from wood) would prevent a rise in temperature in an enclosed environment. Refrigeration has evolved greatly over the years but the principle remains; to keep items cool. Depending on what that item is has given way to different types of refrigeration devices such as the refrigerator, the air conditioning unit and the portable cooler.
It’s funny to even discuss the evolution of the refrigerator because most of us think nothing of running to the fridge to grab an ice cold coke or bottle of water. However, just about half a decade ago, the refrigerator of today didn’t exist. The modern day refrigerator works by using coils on the outside of the refrigerator too cool the air inside the fridge. Insulation plays a huge role in enabling the efficiency of the modern day refrigeration.
The air conditioning unit works slightly different from the refrigerator. The AC unit, as most of us now call it, is normally located outside the home and works through evaporative coils, similar to that of a refrigerator, but on a much larger scale. Because our homes have grown larger and larger over the years, these AC units have to pump cool air to all areas of the house. This is accomplished with the use of duct work. In some Asian countries they have mini-split systems which mean that a separate smaller AC unit is in every room which AC is needed. Again, insulation in a house will greatly impact the efficiency of an AC unit.
Its no surprise that the importance of insulation has led to vast improvements in the portable cooler. Most coolers are now roto-molded to provide maximum insulation, often times up to 3 inches thick. This is quite the change from your old steel belted Coleman cooler that many were first introduced to. The portable cooler works much like the original ice box, but with a heck of a lot more insulation. In the last 5 years or so there has been a surge in high end roto molded coolers. These coolers provide multiple days worth of ice retention. The only drawback of these fancy coolers is the price and deciding which brand is the best. Many struggle determining which cooler brand is the best between grizzly coolers vs yeti. Considering these coolers sell for hundreds of dollars it is understandable the hesitation of most when making the purchase. A lot of people are turning to the internet to look for yeti coolers for sale at a discount. These discounts are few and far between but they do come around every once in awhile.
The simple practice of keeping items cool has come a long way. The efficiency of refrigeration continues to improve as insulation technology gets better and better. Walk in freezers are now sprayed with insulating foam which works many times better than any fiberglass based foam ever could. There is no telling what the future hold for refrigeration innovation, but with the steps made thus far there are sure to be some dazzling new inventions just around the corner.