Special applications of refrigeration

Uses of refrigeration span sizes and capacities from small appliances to the large industrial scale. Drinking fountains are small refrigeration units which chill drinking water for storage and use as needed.

Dehumidifiers are appliances to dehumidify air in homes and buildings using a refrigeration unit by first passing the air to be dehumidified through the cold evaporator coil of the system, where the air is both cooled and dehumidified. Then this cool air flows over the condenser and is discharged to the room.

The production of ice may take place in domestic refrigerators, ice makers serving restaurants and motels, and large industrial ice makers serving food-processing and chemical plants.

Refrigeration is sometimes used to freeze soil to facilitate excavations. A further use of refrigeration is in cooling huge masses of concrete (the chemical reaction which occurs during hardening gives off heat, which must be removed so that it cannot cause expansion and stress the concrete). Concrete may be cooled by chilling the sand, gravel, water, and cement before mixing, and by embedding chilled-water pipes in the concrete.

One of the methods available for desalination of seawater is to freeze relatively salt-free ice from the seawater, separate the ice, and remelt it to redeem fresh water.

The refrigeration industry is characterized by steady growth.

The high cost of energy since the 1970s has been a significant factor in stimulating technical challenges for the individual engineer. Innovative approaches to improving efficiency which once were considered impractical now receive serious consideration and often prove to be economically justified.

Refrigeration	охолоджування, заморожування
To span	вимірюватися
Drinking fountain	питний фонтан
Dehumidifier	осушувач, вологопоглинач
Industrial scale	промисловий масштаб
Unit	агрегат, установка
To dehumidify	висушувати
Evaporator	випаровувач
Coil	спіраль
Ice maker	льодогенератор
To facilitate	полегшувати
Redeem	відновлений

2. Comprehension check.

1. What is the function of the drinking fountains?

2. How does the dehumidifier work?

3. Where does the production of ice take place?

4. What are other uses of the refrigeration?

5. What was a significant factor in stimulating technical challenges for the individual engineer?

3. Complete the following sentences with the appropriate word. Translate the sentences.

Concrete, appliance, chills, facilitate, frozen.

1. An ___________ is a piese of electrical equipment used in your home such as washing machine of fridge.

2. The longer this salad________, the better the flavour.

3. Hey! The milk has _________ solid!

4. __________ is a substance used for building that is made by mixing sand, small stones, cement, and water.

5. Both centres are electronically linked to __________ communication.

Дата добавления: 2015-11-16