Theme 2. From the history of air-conditioning.

1. Look through the text "From the history of air - conditioning" and pick out all the variants of the use of «air -conditioning» and its derivatives.

2. Try and guess the meanings of the following words. Analyze the context they are taken from.

Standards, today's standards, the public air - conditioning, resi­dences, residential air -conditioners, the number of centrally air -condi­tioned homes, industrial processes, designed hospital structures era, types of industry, accelerating pace.

In what way would you render the word - combination «a non -conditioned age» into Russian?

3. Find the sentence that begins with «At the same time, virtually» in the text "From the History of Air-Conditioning". Render the sentence into Russian without using a dictionary. The context will be of help to you.

FROM THE HISTORY OF AIR-CONDITIONING.

In the 1920s air-conditioning for comfort was first used when motion picture industry was building theatres in the U.S. All of the Movie Palaces of those years hung out huge sings proclaiming that it was 20 cooler inside and, while admittedly some of the installations were far from perfect by today standards they served to introduce the public to air- conditioning.

While a few residences were air- conditioned prior to World War 2, home air - conditioning did not really start growing until some 10 years after the war. The early residential air- conditioners were expensive, were really a luxury then, installed only in the most expensive houses.

Today, the number of centrally air - conditioned homes is growing from year to year at an accelerating pace in addition to homes that are centrally air conditioned; there exist window air - conditioners in one or more rooms. Complete data are not available on the penetration of air -conditioning in industrial plants, but it is known that only a small percentage of them are air - conditioned. Schools and hospitals are now also moving into air -conditioning and most of them are being designed for air -conditioning, ft has already been proved that air - conditioning is a "must" in hospitals and all new hospitals being built today are air -condi­tioned. At the same time, all stores, restaurants and other retail establish­ments arc being air- conditioned. Aside from the creation of comfort con­ditions, numerous studies have determined that air- conditioning adds to human efficiency. Air -conditioning cuts the costs of products, steps up production. Many of the new industries of our present era and many new developments within all the types of industry could not have existed in a non- air - conditioned age.

4. Answer the question: «Where is air - conditioning used? ». Give the examples from the text to illustrate your answer.

5. Look through the text again, choose the ready - made sentences describing the steps in the development or air-conditioning.

6. Read the text and say if we can get the answer to the question: «Why is the number of centrally air-conditioned homes growing from year to year at an accelerating pace? » in the text.

7. Explain and develop the last sentence of the text into a situation.

8. Make the text shorter by singling out information according to the plan:

1. The steps in the development of air-conditioning.

2. The fields of application of air-conditioning.

3. The advantages of air-conditioning.

9. Read the text given below and compare it with the text "From the History of air-conditioning" by stating:

1. if it can be the logical continuation of it,

2. what additional information on air-conditioning it presents,

(с) what information is similar.

AIR-CONDITIONING IN BUILDING.

Air-conditioning is a fundamental necessity of new building such as offices, public assembly, department stores, apartment houses, hospitals, hotels or other continually occupied space. The demand for air -condi­tioning increases. Houses of future are inconceivable without it. Besides introduction of clean, properly conditioned air and the evacuation of it af­ter it is vitiated, many other things are involved in the conditioning of large buildings which are to be solved. Engineers, architects, constructionmen arc lo solve such problems as space for central apparatus, space for cooling towers, loss of usable area to care for networks of conduct carrying (lie conditioned fluid, cost of original installation, cost operation and mainte­nance and others .