[ILM] 102F

Question 1

AQI(Air Quality Index)

Answer 1

A numerical system for reporting air pollution severity

Question 2

ASHRAE(American Society of Heating, Refrigerating and Air-conditioning Engineers)

Answer 2

sets design standards for the HVAC and refrigeration industry

Question 3

HEPA filter
(High Efficiency Particulate Arresting)

Answer 3

uses brittle glass fibre to remove up to 99.7% of particles above 0.3 microns in diameter from the air

Question 4

MERV (Minimum Efficiency Reporting Value)

Answer 4

is an ASHRAE filter rating scale that indicates the effectiveness of an air filter.
The scale ranges from 1-20

Question 5

3 categories of air filters

Answer 5

dry
wet
electronic

Question 6

ULPA filter

Answer 6

Ultra-Low Particulate Air filters are the MOST effective filter in the market

Question 7

Fibrous media filters

Answer 7

the least expensive and the most widely used type of filter

some fibrous media filters are coated with an oil or adhesive(들러붙는) compound to increase their efficiency

trap 10 microns

Question 8

1 micron ==

Answer 8

0.001 millimeters

Question 9

Pleated Media Filters

Answer 9

capture particles from 3.0 - 10.0

Question 10

Electrostatic filters

Answer 10

are constructed from specially blended self-charging materials

Question 11

wet filters are called

Answer 11

air washers (ex. evaporative coolers)

Question 12

electronic air cleaners

Answer 12

removes particles as small as 0.5 microns

Question 13

One byproduct of electronic air cleaning is a polluting version of ozone gas

T or F

Answer 13

True