Air Conditioning Systems

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■ The general uses of power equipment and transportation sys­tems have led to...

■ Alarm systems cover...

■ All fire protective signal systems are...

■ Circuits to spread information or control other circuits are classified...

■ Modern constructions provide...

■ Environmental-control systems such as...

■ Since 1970s...

ü...a great number of wiring is to be...

ü...telephone, television as well as closed-circuit television...

ü...are classified as communication systems...

ü...security, fire automatic detection and fire alarm systems...

ü...empty conduits with a wire inside are to...

ü...are possible all year round...

ü...all the processes are programmed in order to...

• My neighbour has installed the alarm system recently.

• My neighbour has the alarm system installed recently.

• My neighbour installed the alarm system yesterday.

• It was yesterday when the alarm system was installed.

• It was the alarm system that was installed yesterday.

• It was my neighbour who installed the alarm system yesterday.

air conditioning — кондиционирование воздуха; to accomplish — совершать, достигать;

heat-activated equipment — оборудование, активизирующееся в результате нагрева;

dehumidification — осушение (воздуха), удаление избытка влаги;

corner convenience store — магазин шаговой доступности;

air contribution — забор воздуха;

low-rise apartment — малоэтажное жильё;

condominium — квартира в доме-совладении;

vapour compression — сжатие пара;

viable— жизнеспособный;

condenser — холодильник, конденсатор;

expansion device — расширительное (дросселирующее) устройство; evaporator— испаритель, выпариватель; absorption — всасывание, впитывание, абсорбция; refrigerant — хладагент.

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[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.]⁰ In most applications, the air conditioner is to provide either cooling or dehumidification to maintain comfort in the building.

Commercial buildings range from large high-rise buildings to the corner convenience stores with a great variety of equipment. [For larg­er buildings the air conditioning equipment is apart from a total system design including piping, air contribution, and cooling systems.]⁰

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'.

[Most systems utilize the vapour compression cycle to produce de­sired cooling and dehumidification.]⁰ The first patent on mechanically driven refrigeration system was granted in London in 1834. It was Jacob Perkins who is the invention patentee. The first viable commer­cial system was produced in 1857 by James Harrison and D. Siebe.

[The four basic components in every compression refrigeration system are; the compressor, condenser. expansion device, and evaporator.]⁰

There are less common methods to cool buildings: by absorption cycle and evaporative cooling. With the vapour compression cycle, a working fluid (called refrigerant) evaporates and condenses at suita­ble pressures.

(1250 п.зн.)

4. Закончите предложения в соответствии с содержанием.

• Air conditioning has grown to a standard facility and is usually...

• The air conditioner is to make...

• The air conditioning equipment includes...

• The majority systems use the vapour compression cycle to...

• It was Jacob Perkins who obtained.

• In 1857 the first acceptable...

• The absorption cycle and evaporative cooling...

• The refrigerant is...

• In every compression refrigeration system there are...

Дата добавления: 2014-12-29