Chapter 131

Question 1

A disadvantage of the atomising humidifier is the salts that were in the water before atomisation and evaporation:

Answer 1

settle as white dust in rooms

Question 2

When using a steam humidifier, what steam pressure should be used?

Answer 2

35-70 kPa

Question 3

When using a steam humidifier, what steam pressure should be used?

Answer 3

35-70 kPa

Question 4

Used in the supply plenum of smaller warm air furnaces and consists of a shallow trap partially filled with water is called a:

Answer 4

pan type humidifier

Question 5

Humidification in residences equipped with ducted warm air heating systems i provided for by playing a single humidifier in the:

Answer 5

furnace plenum or in the warm air duct

Question 6

Relative humidity is decreased when air temperature is raised without

Answer 6

the addition of moisture

Question 7

Where should an air washer be installed in an air handling unit?

Answer 7

upstream of the fan

Question 8

Relative humidity increases when

Answer 8

the air temperature decreases

Question 9

Its not recommended to use an on/off with a steam grid humidifier because

Answer 9

fogging, overheating and wide fluctuations in relative humidity would occur

Question 10

Its not recommended to use an on/off with a steam grid humidifier because

Answer 10

fogging, overheating and wide fluctuations in relative humidity would occur

Question 11

Steam grid humidifiers used in air conditioning systems achieve humidification by injecting steam in:

Answer 11

the supply air stream