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■...from a luxury to a standard facility...

■...in most residential and commercial buildings...

■... standard package...

...in London in 1834... ■...the first viable commercial system was...

■...methods to produce cooling in buildings...

■...the vapour compression cycle is to...

■...a working fluid called...

■...the four basic components...

> Air conditioning has rapidly grown from a luxury to a standard facility in most residential and commercial buildings and is usually accomplished with the use of mechanical or heat-activated equipment.

> In most applications, the air conditioner is to provide either cooling or dehumidification to maintain comfort in the building.

> The residential building sector is dominated by single family houses and low-rise apartments or condominiums, the cooling equip­ment applied in such building coming in standard 'packages'.

The first viable commercial system was produced in 1857 by James Harrison and D. Siebe.

> There are less popular ways to produce cooling in buildings: the absorption cycle and evaporative cooling.

■ Commercial buildings range from large high-rise office build­ings to the corner storehouses with a great variety of equipment.

■ Most systems utilize the vapour compression cycle to produce the desired cooling and dehumidification.

■ The first patent for mechanically driven refrigeration system was granted to Jacob Perkins in London in 1834.

■ With the vapour compression cycle, a working fluid, which is called the refrigerant, evaporates and condenses at suitable pressures.

■ The four basic components in every compression refrigeration system are the compressor, condenser, expansion device, and evapora­tor.

1. Located at the end of the main the vertical pipe drips condensate into return piping. 2. The main function of windows is to give light and ventilation. 3. A construction project is a complex net of con­
tracts. 4. A new shopping complex with a modern split system is re- i ported to be building here. 5. When we heat water, it turns into steam.

6. Concrete is a poor conductor of heat; besides, it doesn't catch fire.

7. Being fueled by gas, wood, oil, or coal, boilers fire automatically.

8. Air elimination from the piping and radiators is a must for steam systems to work properly. 9. This material is highly popular because of its light weight and relatively low cost.

10 Предельно кратко и информативно расскажите:

— о системах охлаждения;

— хладагентах;

— процессе охлаждения.

Дата добавления: 2014-12-29