Basic H.V.A.C

Question 1

What does H.V.A.C stand for?

Answer 1

Heating, Ventilation, & Air Conditioning

Question 2

These are all examples of what solar heating system?
Direct gain
Indirect gain
isolated gain (sunrooms)
thermal mass wall/ trombe wall

Answer 2

Passive Solar Heating Systems

Question 3

These are a;; examples of what solar heating system?
liquid systems
air systems

Answer 3

Active Solar-Heating Systems

Question 4

What does IECC stand for?

Answer 4

the International Energy Conservation Code

Question 5

What does IRC stand for?

Answer 5

the International Residential Code

Question 6

What does ASHRAE stand for?

Answer 6

American Society of Heating, Refrigerating and Air-Conditioning Engineers.

Question 7

What does NFPA stand for?

Answer 7

the National Fire Protection Association

Question 8

What are the 4 means of introduction heat into a building?

Answer 8

1) On-site Combustion
2) Electric Resistance
3) Heat transfer from an on-site source
4) Energy Capture

Question 9

These are all examples of which way to introduce heat into a building?
Oil, Natural Gas, Liquified Gas, Coal, Wood, electricity

Answer 9

On-Site Combustion

Question 10

These are all types of ____ _____ _____?
Hot water and steam heating
Radiant heating
electric-resistance heating
forced air heating
active solar heating system

Answer 10

Central Heating Systems

Question 11

This describes what system?
“ heat a building by means of water heated in a boilet and circulated by a pump through pipes toa fin-tube radiator,convector, or unit heater for heating

Answer 11

Hot-Water (Hydronic) Systems

Question 12

This describes what system?
“use boilets to generate steam that is circulated through piping to radiators

Answer 12

Steam Heating systems

Question 13

This describes what system?
“can be more energy efficent than hot air systems, by transferring heat directly to objects and occupants without heating large volumes of air first.
1) Radiantly Heated Floors
2)Radiantly Heated ceilings or walls

Answer 13

Radiant Heating

Question 14

These are all components of?
require no wall space
have no vents
do not interfere with cabinet or furntiure placement
they may raise the heigh of the floor. Necessitating door clearance and possibly cabinet adjustments

Answer 14

Radiantly Heated Floors

Question 15

These are all compoents of?
Have a lower heat output
do not respond quickly to changing temperature
separate ventialtion, humidity control, and cooling system are required for completely conditioned air
Do not install radiant panels in walls above 48” to avoid hammering nails into electrical coils

Answer 15

Radiantly Heated Ceilings or Walls

Question 16

_____ _____ Heat
is low-cost
easy to install
offer individual thermostatic control
do not waste heat in unoccupied rooms
do not have to be vented
. However they use high grade electricity for low-grade space heating, so their use should be limited spot-heating a small area for a limited time.

Answer 16

Electric Resistance Heat

Question 17

This works by heating air in a gas,oil or electric furnace and distributing it by a fan through ductwork to registers or diffusers in inhabitated spaces

Answer 17

Forced-Air Heating

Question 18

____ ___ are often located in the floor, typically below glass areas

Answer 18

Supply Registers

Question 19

A seperate system of exhaust ducts draws cool air back through ____ ___ ____ to be reheated and recirculated

Answer 19

Return Air Grilles

Question 20

Air ducts through a fire barrier are required by codes to have fire ______ made of fire-resistive materials

Answer 20

Dampers

Question 21

____ ____ ____ refers to any aur conditioning system that uses solar power. This can be done through passive solar, solar thermal energy conversion and photovoltaic conversion

Answer 21

Solar Air Conditioning

Question 22

How many homes have A/C?

Answer 22

2/3

Question 23

Electricity to power all A/C units emits how much carbon dioxide?

Answer 23

100 Million Tons

Question 24

___ ___ is the rate at which heat needs to removed from the air

Answer 24

Cooling Load

Question 25

___ the ability of equipment to remove heat

Answer 25

Capacity

Question 26

_______ _______ 1. Prcoess starts with evaporaing of refridgeration in the evaporator 2. Compression raises the pressure of the refridgerant 3.The vapor is now hot and is cooled before condensation starts 4. the pressure is reduced in an expansion device, and the refridgerant is returned to its original condition

Answer 26

Compressive Refridgeration

Question 27

These are all examples of ______ ______ Freon CFCs HCFCs

Answer 27

Refrigerant Types

Question 28

this escapes/leaks and becomes chlorofluorocarbons

Answer 28

Freon/CFCs

Question 29

An Alternate Refridgerant would include?

Answer 29

HCFCs (Hydrochlorofluorocarbons)

Question 30

_____ _____ (swamp cooler) utilizes water-soaked pads to cool the air. This process works because a fan pulls hot air into the unit, sending it through a series of pads that helps evaporate the liquid into a gas which then blows out cooler than it was when it entered the unit

Answer 30

Evaporative Cooling

Question 31

____ ____ works through a fan an water pump thus using much less power than most cooling systems

Answer 31

Evaporative Coolers

Question 32

These are all examples of what cooling system? 1. Packaged systems 2.Split Systems 3. Ductless Split Systems 4. Chilled Water Systems

Answer 32

Mechanical Cooling Systems

Question 33

What does PTACs stand for?

Answer 33

Packaged Terminal Air Conditioners

Question 34

This is an example of what system? Window air conditioners, through-wall room units, and heat pumps

Answer 34

Packaged Systems

Question 35

This is an example of what system? include an indoor unit, outdoor unit and a thermostat

Answer 35

Split Systems

Question 36

This is an example of what system? Consist of an outdoor compressor or condesner paired with an indoor air handling unit

Answer 36

Ductless Split System

Question 37

This is an example of what system? the entire air conditioner is installed on the roof or behind the building. It cools water between 40 to 45 degress Farenheit. The chilled water is then piped throughout the building and connected to air handlers

Answer 37

Chilled Water Systems

Question 38

Smaller buildings have ______ equipment

Answer 38

Localized

Question 39

Larger buildings typically have ______ _____

Answer 39

Centralized Systems

Question 40

How are buildings typically divided?

Answer 40

HVAC zones

Question 41

True or False? The Ceiling Plenum will not impact the layout of the RCP

Answer 41

False

Question 42

Most large buildings have what form of HVAC distribution?

Answer 42

Distribution Tree

Question 43

What does CFM stand for?

Answer 43

Cubic Feet per Minute

Question 44

What does CFM measure?

Answer 44

the measurement of the veolcity at which air flows into or out of a space

Question 45

Each ton of cooling requires ____ cfm of air flow

Answer 45

400

Question 46

____ _____ are rectangular openings with fixed vertical or horizontal vanes or louvers through which air passes

Answer 46

Return Grilles

Question 47

____ ___ have adjustable vanes that control the direction of air entering room and do not have dampers

Answer 47

Supply Grilles

Question 48

____ use louvers and dampers to control airflow and direction

Answer 48

Registers

Question 49

A ____ and its dampers are designed facing all-round, rather than a registers single air direction

Answer 49

Diffuser