Air conditioner & Humidity

Air conditioner

Alita Daniels

Page Number

1st Edition –211-214

2nd edition – 200-204

3rd Edition – 249- 253

Objective:

* Discuss the features of an air conditioner and how its assists in ventilation and explain how temperature, air movement and humidity affect drying.

Multiple Select

Air conditioning.....(select those that apply)

• the process of treating air

• to control its humidity

• to control its temperature

• to control it cleanliness

Multiple Select

What are the major components in an air conditioner?

• compressor

• expansion valve

• thermostat

• fans

• condenser

Multiple Choice

What happens in the compressor

• First the refrigerant is compressed; turn it into high pressure vapor. Then it is sent into the condenser.

• The axle fan will blow the condenser, where its function to cool the refrigerant in the refrigeration cycle.

• The high-pressure liquid is sent into the expansion valve; turns into low pressure liquid. Then it is sent into the evaporator.

• Finally the low-pressure vapor is back to the compressor for the same process; the overall process is repeated over and over again.

Multiple Choice

What occurs in the expansion valve?

• Gas refrigerant is compressed into a liquid.

• Liquid refrigerant passes through and expands into a gas

• Heat is released

• cold refrigerant passes through the coils

Multiple Select

How does the air conditioner assist with ventilation? (check which apply)

• Removes pollutants

• controls humidity

• exchanges inside air with outside air

• cools air to desired temperature

Multiple Choice

Humidity is the measure of?

• the temperature of the air

• the amount of pollution in the air

• the speed and direction of the wind

• the amount of water vapor in the air

Multiple Choice

Define Saturation

• when air holds as much moisture as it can hold

• temperature at which condenses out of the air

• temperature of dew point

• water in the air

Multiple Choice

in which type of day is the relative humidity greater than or equal to 10 degrees Celsius

• dry hot day

• slightly humid day

• damp rainy day

• damp windy day

Multiple Choice

Mrs. James dries her washing on a line in her garden. Under which conditions will her clothes dry the quickest?

• cool, humid day

• cool, still day

• warm, windy day

• a warm humid day