Discuss the questions

Plate Heat Exchanger.

(The main components).

Key words

Frame plate, carrying bar, bolt protection, support column, tightening bolts, connections,

channel plates, pressure plate, guiding bar, protective sheets, pipe connections, heat exchanger.

1. Which parts permit the media to enter into the heat exchanger?

2. How is heat transferred from one medium to the other?

3. What is used to protect the holes against corrosion?

4. Which part keeps the channel plates in line at their lower end?

Vocabulary.

main component - основные детали

to press – прижимать, стягивать (зд.)

a hole – отверстие

to permit – разрешать

medium – носитель

thread – резьба

stud – шпилька

lining – прокладка

to protect – защищать

corrosion – коррозия

welding – сварка

surface – поверхность

moveable – подвижный

A direct expansion evaporator.

Key words

A direct expansion evaporator, liquid hammering, damage, superheated, thermostatic, pulse modulated motor, a step motor, heat motor, vapour, mixture.

Match the key words with their translations.

Повреждение, пар, термоэлектрический привод, смесь, испаритель непосредственного охлаждения, терморегулирующий, шаговый электродвигатель, перегретый, импульс- ный электродвигатель, гидравлический удар.

Write your ideas of what you would like to know about a direct expansion evaporator.

Read the text and say if you have found the answer.