4. Decide whether these statements are true or false according to the text.

1. Vacuum drying is ideal for materials that would be damaged or changed if exposed to high temperatures.

2. Vacuum drying saves timer.

3. Drying at higher temperatures reduces energy consumption.

4. Vacuum drying protects engineers.

5. New companies face the problem of fast and high quality drying of food & wood.

6. Convective chambers have a number of disadvantages.

7. Vacuum drying chambers are more beneficial.

8. Convective chambers have available price.

5. Complete the sentences.

1. The vacuum removes moisture while…

2. This results in faster drying and…

3. Drying at lower temperatures reduces…

4. Since drying occurs in a closed system, hazardous materials and…

5. At present there appear new companies dealing with food and…

6. Convective chambers have…

7. Vacuum drying chambers have…

8. Moreover, their mounting and dismantling…

6. Answer the questions to the text.

1. What is the aim of vacuum drying?

2. What does vacuum drying provide?

3. What does vacuum drying prevent?

4. Whom and from what does vacuum drying protect?

5. What do new companies deal with?

7. Do new companies face any problems?

8. How do they solve their problems?

9. What types of chambers can you name?

10. Do you see the difference among the chambers?

Vocabulary Practice

7. Translate, single out the suffixes of Nouns – Adjectives- Verbs, see if you can transform them for creating your own statements on vacuum drying.

A chamber, type, material, damage, change, explosion, oxidation, situation, discolouration, consumption, pollution, pressure, moisture, temperature difference, drying, contaminant, potential, dusting, recovery, solvent, dryer; expenses, fume, design, exhaust, heat, loss, solving, quality, equipment, mounting, dismantling.

B independent, ideal, great, efficient, fast, low, atmospheric, additional, chemical, hazardous, dangerous, convective, air-dynamic, dielectric, available, quickly.

C allow, boil, cause, change, combine, damage, dry, eliminate, expose, lower, minimize, occur, recover, reduce, release, remove, result in, save.

Lexical & Grammar Aspect

8. Choose the right word.

1.Vacuum drying is ideal … materials that would be damaged or changed if exposed to high temperatures

a) from b) of c) for

2. Drying under reduced pressure provides a greater temperature … between the heating medium and product

a) different b) difference c) differential

3. Drying at lower temperatures reduces energy… .

a) consumption b) crisis c) sources

4. The potential for explosions is reduced because of the lower… .

a) prices b) temperatures c) requirements

5. Different … and chamber types are used.

a) specialists b) engineers c) methods

9. Insert the right words.

a) moisture b) solvents c) reduces d) appear e) ideal

f) high quality g) provide h) chambers

1. Vacuum drying is … for materials that would be damaged or changed.

2. The vacuum removes … while preventing the oxidation or explosions.

3. Drying at lower temperatures … energy consumption.

4. The dryers' closed-system design allows costly … to be recovered.

5. At present there … new companies dealing with food and wood processing.

6. These companies face the problem of fast and … drying.

7. Convective … have a number of drawbacks.

8. They … high-quality drying within a short period of time.