| Prior to the invention of refrigerators or freezers, | | | | that they are very economical to operate and very |
| people used to preserve their food with the help of | | | | affordable to buy.Most of the latest models are all |
| ice or snow.Freezing or refrigerating is the process of | | | | packed with the facilities such as fast-freezing, |
| taking out heat from an enclosed system or from | | | | temperature warning system and are available with |
| the body in order to lower its temperature. | | | | the highest grade of A++. |
| The very first man made refrigerator known was | | | | Upright Freezers are the best ways of going for |
| first demonstrated by William Cullen in the year 1748 | | | | deep freezing if it is required to keep the food for |
| at Glasgow.But in the year 1805, Oliver Evans | | | | long time.They are available in form of frost-free and |
| designed a cooling machine. | | | | manual defrosts models.They are single unit freezers |
| Basically there are two types of freezers viz.chest | | | | with the capacity that ranges from 2 cubic feet to |
| type and upright.Different freezers have different | | | | 20 cubic feet.These consume very less floor space |
| systems hence they exhibit different features. | | | | as compare to chest freezer. |
| Chest freezers are generally used for large | | | | The advantages associated with these machines are |
| households which require to stock food in large | | | | that the contents of the freezer are very easy to |
| quantity.They are generally installed in garage or at | | | | pack and organize.The drawback of the machine is |
| store rooms due to their size.Chest freezers are also | | | | that they are quite expensive as compare to chest |
| very useful for the people who store the food once | | | | freezer also the cold air can be easily lost due to |
| in couple of months.These are considered as energy | | | | leakage allowing warm air to enter. |
| efficient and cheap freezers as compare to upright | | | | These types of freezers are excellent for limited |
| type. | | | | family.They comprise of several divisions such as |
| These are available in several sizes that range from 4 | | | | slide-out baskets, shelves and compartments.This can |
| cubic feet to more than 20 cubic feet.This equipment | | | | be used for several processes such as storing milk |
| is quite easy and cheap to run.This is due to the fact | | | | products, freezing fishes etc. |
| that the freezer opens from the top and hence the | | | | Frost free freezer is free from freezer burn |
| cold air is retained well as it has the tendency to | | | | process.As it does not support ice crystal formation, |
| move downward than upwards. | | | | one should be sure about the taste and nutritional |
| These exhibit removable baskets for storing smaller | | | | content of the food.It also exhibits an advantage |
| products and for separating different types of | | | | that it does not smell due to regular air circulation. |
| foods.These baskets can be customized for | | | | The main drawback of these machines is that they |
| organizing the complete freezer.These are meant to | | | | are very costly to operate.It also consumes much |
| retain the quality of food for longer hours. | | | | more power than upright and chest freezers. |
| The advantages associated with these freezers are | | | | |