Basic H.V.A.C Flashcards

1
Q

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

A

Heating, Ventilation, & Air Conditioning

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

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

A

Passive Solar Heating Systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

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

A

Active Solar-Heating Systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does IECC stand for?

A

the International Energy Conservation Code

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does IRC stand for?

A

the International Residential Code

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does ASHRAE stand for?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does NFPA stand for?

A

the National Fire Protection Association

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

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

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

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

A

On-Site Combustion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

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

A

Central Heating Systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

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

A

Hot-Water (Hydronic) Systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

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

A

Steam Heating systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

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

A

Radiant Heating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

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

A

Radiantly Heated Floors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

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

A

Radiantly Heated Ceilings or Walls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

_____ _____ 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.

A

Electric Resistance Heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

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

A

Forced-Air Heating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

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

A

Supply Registers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

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

A

Return Air Grilles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

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

A

Dampers

21
Q

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

A

Solar Air Conditioning

22
Q

How many homes have A/C?

A

2/3

23
Q

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

A

100 Million Tons

24
Q

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

A

Cooling Load

25
Q

___ the ability of equipment to remove heat

A

Capacity

26
Q

_______ _______
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

A

Compressive Refridgeration

27
Q

These are all examples of ______ ______
Freon
CFCs
HCFCs

A

Refrigerant Types

28
Q

this escapes/leaks and becomes chlorofluorocarbons

A

Freon/CFCs

29
Q

An Alternate Refridgerant would include?

A

HCFCs (Hydrochlorofluorocarbons)

30
Q

_____ _____ (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

A

Evaporative Cooling

31
Q

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

A

Evaporative Coolers

32
Q

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

A

Mechanical Cooling Systems

33
Q

What does PTACs stand for?

A

Packaged Terminal Air Conditioners

34
Q

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

A

Packaged Systems

35
Q

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

A

Split Systems

36
Q

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

A

Ductless Split System

37
Q

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

A

Chilled Water Systems

38
Q

Smaller buildings have ______ equipment

A

Localized

39
Q

Larger buildings typically have ______ _____

A

Centralized Systems

40
Q

How are buildings typically divided?

A

HVAC zones

41
Q

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

A

False

42
Q

Most large buildings have what form of HVAC distribution?

A

Distribution Tree

43
Q

What does CFM stand for?

A

Cubic Feet per Minute

44
Q

What does CFM measure?

A

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

45
Q

Each ton of cooling requires ____ cfm of air flow

A

400

46
Q

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

A

Return Grilles

47
Q

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

A

Supply Grilles

48
Q

____ use louvers and dampers to control airflow and direction

A

Registers

49
Q

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

A

Diffuser