VI. Discussion:

Answer the following questions:

What is BTU?

What temperature must one pound of water inside the conditioner be?

What BTU is necessary for a typical window conditioner?

How can EER be understood?

How can we calculate EER?

Is it reasonable to use higher EER?

What do you need to know for understanding the payback period?

2. Add more details to the statement:

1) Most air conditioners have their capacity rated in British thermal units (BTU).

2) The energy efficiency rating (EER) of an air condition is its BTU rating over its wattage.

3) Every five hours the less expensive unit will consume 1 additional KWh than the more expensive unit.

3. Retell the text.

Stop and check I.

Exercise 1. Choose one of the suggested answers:

1. He didn’t expect the machine … out of work:

   1. to be

   2. to have been

   3. be

2. The devices …should be of high quality:

   1. for test

   2. to be tested

   3. to test

3. I can’t allow them … with my work:

   1. to interfere

   2. interfere

   3. to have interfered

4. He seems … at the moment. Don’t disturb him:

   1. to work

   2. is working

   3. to be working

5. I want the work … immediately:

   1. to do

   2. to be done

   3. done

6. She expected … to assist her while conducting the experiment:

   1. him

   2. he

   3. his

7. Conditioners are said … more electricity than any other appliances:

   1. consume

   2. to be consumed

   3. to consume

8. It was an adventure for me … the experiment:

   1. to watch

   2. watch

   3. to be watched

9. We are waiting for … to be published in English:

   1. him

   2. the article

   3. he

10. I heard him … about the innovations on the conference:

    1. to report

    2. report

    3. reported

Exercise 2. Correct the mistakes where necessary:

Help Helen. The box is too heavy for to carry.

We watched the engineer to test the new apparatus.

He is seemed to know nothing about the problem.

I’d like he to mend my computer.

He claims to work here before.

He looks tires. He seems to have working all the day.

The machines are unlikely to deliver in time.

Their equipment may prove are the best at the exhibition.

We expect that the instructions to be fulfilled immediately.

The scientist knows to be one of the greatest in this sphere.

Exercise 3. Choose one of the suggested answers:

1. … by the engineer the equipment was put into operation:

   1. Having been checked;

   2. Checking;

   3. Having checked.

2. The conference …the perspectives of non-toxic materials use took place in our university:

   1. concerned;

   2. concerning;

   3. being concerned.

3. The classes …, we went home:

   1. have finished;

   2. finished;

   3. finished.

4. He spent an hour … the report:

   1. prepared;

   2. preparing;

   3. have prepared.

5. The news were …, we couldn’t believe it:

   1. shocking;

   2. shocked;

   3. being shocked.

6. D. Mendeleev noticed the periodicity in the chemical properties of elements, the Periodic Law … :

   1. creating;

   2. have created;

   3. being created.

7. He spent hours … calculations:

   1. making;

   2. being made;

   3. having made.

8. … away the water turned into steam:

   1. boiling;

   2. having boiled;

   3. being boiled.

9. The temperature … , it became colder:

   1. decreases;

   2. decreasing;

   3. having decreased.

10. The defects …by the producers are to be replaced at their expense:

    1. caused;

    2. causing;

    3. being caused.

Exercise 4. Find Ukrainian equivalents to English proverbs, containing different forms of participles:

1. Seeing is believing. 2. Doing is better than saying. 3. Well begun is half done. 4. To cook the hair before catching him. 5. Things passed can’t be recalled. 6. The rotten apple injures its neighbours. 7. Accidents happen in the best regulated families. 8. Stolen waters are sweet. 9. No sooner said that done.

1. Нема роду без вироду. 2. Ділити шкуру невбитого ведмедя. 3. Поки не побачу – не повірю. 4. Не так швидко робиться, як мовиться. 5. Одна паршива овечка всю отару поганить. 6. Минулого не повернеш. 7. Добрий початок – половина справи. 8. Заборонений плід солодкий. 9. Добре діло краще за гарні слова.

Unit 9.

Split-System Units

and Chilled

water systems.

1. Warm-up:

1. What types of air conditioners do you know?

2. What do you know from the history of air conditioners?

3. Is it difficult to operate an air conditioner?

2. Read and translate the text: