Профессиональное развитие будущих инженеров-строителей средствами иностранного языка: Лексический практикум по английскому языку. Трубникова Н.В. - 111 стр.

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an annual air conditioning inspection with a creditable air conditioning com-
pany, and simply paying attention to the heat pump thermostat are all ways to
make your heat pump air conditioner last.
If you are shopping around for a new heat pump thermostat, look for one
that has a variety of features to deliver an overall performance that will give
you the best in temperature control. There are two main types of heat pump
thermostats and the options are simply based on preference. There are electro-
mechanical and electronic heat pump thermostats, used for residential purposes.
The electronic heat pump thermostats can provide any temperature you'd like
and are entirely programmable, where you can set it to 60 degrees at night and
then have it programmed to be at a comfortable 70 degrees when you wake up
in the morning. Electro-mechanical thermostats contain a bi-metal coil
or strip
that are two different types of metals, which expand and contract at different
rates. When this takes place, the coil or strip moves and connects to a device
that will provide the electrical circuit. They are set at standard temperatures and
you adjust them with a little switch to the appropriate temperature.
All-year Air Conditioning, Ventilation, Gas Supply
Air conditioning implies the control of temperature, humidity,
purity and motion of the air in an enclosure. In our modern world of
science and highly developed technology air conditioning is of a great
significance for industrial processes as well as for human comfort. As
an example it must be mentioned that during the manufacture of ex-
tremely delicate equipment such as inertial guidance systems
for rock-
ets, airplanes or submarines both temperature and humidity must be
closely controlled and air purity provided at an extremely high level.
Air conditioning for human comfort is employed in both large and
small installations, such as theatres, office buildings, department stores,
residences, airplanes, railways, cars and submarines. According to
their purpose air conditioning systems may be described as winter,
summer and all-year systems. Considering their basic design they are
called unit or central air conditioners.
All-year air-conditioning systems must provide means for per-
forming all the processes required for winter and summer air condi-

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