MD Quiz 1

Question 1

Cooling Buildings

Answer 1

-Reducing Heat Gain
- Increasing Heat Loss and Access to Cooling Sources

Question 2

Install insulations and shading windows, walls and roofs

Answer 2

Reducing Heat Gain

Question 3

Encouraging Air Movement

Answer 3

Increasing Heat Loss and Access to Cooling Sources-

Question 4

The physical factors necessary for comfort

Answer 4

Physiological Comfort

Question 5

Through encouraging breezes to evaporate perspiration and increase body cooling

Answer 5

Physiological Comfort

Question 6

Factors that affect our perception of thermal comfort

Answer 6

Psychological Comfort

Question 7

Levels of acclimatization and air movement, radiation and conduction

Answer 7

Psychological Comfort

Question 8

• Does not have any sophisticated mechanical equipment to comfort conditions in building interior
• Induces air movements

Answer 8

Passive Cooling

Question 9

Conduction
Convection
Radiation

Answer 9

Passive Cooling

Question 10

Requires the use of energy specifically dedicated to cooling the component

Answer 10

Active Cooling

Question 11

Air Movement

Answer 11

1. Air flows naturally from a high-pressure to a low-pressure area
2. Inertia
3. Air flows through the path of least resistance

Question 12

Once set in motion air tends to continue to flow in its initial direction until some intervening force is met

Answer 12

Inertia

Question 13

Wind from the sea directed toward the land

Answer 13

Sea Breeze

Question 14

Land warms more ? than water

Answer 14

Faster

Question 15

When is daytime heating the strongest? Why?

Answer 15

Afternoon when heating variance is the greatest

Question 16

Land cools ? than water

Answer 16

Faster

Question 17

Wind from the land directed to the sea

Answer 17

Land Breeze

Question 18

The transfer of heat between a surface and a moving fluid

Answer 18

Convection

Question 19

The transfer of heat by movement of the molecules from point in a liquid to another

Answer 19

Convection

Question 20

The movement of air into and out of buildings, chimneys, flue-gas stacks, or other containers resulting from air buoyancy

Answer 20

Stack Effect or Chimney Effect

Question 21

Occurs due to the difference of indoor-to-outdoor air density resulting from temperature and moisture differences

Answer 21

Buoyancy

Question 22

Positive Pressure Wind

Answer 22

Windward Side (Pressure)

Question 23

Negative Pressure Wind

Answer 23

Leeward Side (Suction)

Question 24

What pressure zone in building openings does air enter?

Answer 24

Positive

Question 25

What pressure zone in building openings does air exit?

Answer 25

Negative

Question 26

Air enter on what level of openings?

Answer 26

Low

Question 27

Air exits on what level of openings?

Answer 27

High

Question 28

Window height for effective indoor air movement

Answer 28

1.10 meters

Question 29

These are used to redirect air flow, increase wind velocity, and cool the wind

Answer 29

Wind Deflectors

Question 30

How do you prevent wind shadows?

Answer 30

Placing openings

Question 31

Ventus

Answer 31

Ventilation - movement of air

Question 32

How do you achieve ventilation?

Answer 32

1. Site and space planning 2. Location and design of windows 3. Roofs and overhang 4, Foliage

Question 33

How does window affect the wind

Answer 33

1. deflect or divert it 2. provide flow paths 3, minimize potential barriers

Question 34

The circulation of fresh air through open windows, doors, and other openings on opposite sides of the room

Answer 34

cross ventilation

Question 35

what do you do when you cannot put windows on the opposite sides of the room

Answer 35

place projecting fins on the windward side

Question 36

Openings in ? of the high pressure zone are more effective because the pressure is highest and diminishes around the edge as air find other ways to move around the building

Answer 36

near the center

Question 37

Design of Windows

Answer 37

1. Tint 2. Insulation 3. Shade 4. Foliage 5. Water Elements

Question 38

Can direct airflow upwards or downwards

Answer 38

Louvres

Question 39

Tends to direct air upward

Answer 39

canopy over a window

Question 40

Ensures downward pressure

Answer 40

Gap between canopy and wall

Question 41

Downward pressure is improved through

Answer 41

louvered sunshades

Question 42

Improve passive cooling by providing buffer zones between internal and external spaces

Answer 42

roof spaces

Question 43

One characteristic of air

Answer 43

Air temperature changes faster than ground temperature

Question 44

Marked difference of air temperature between night and day observed at a height of 1000 meters

Answer 44

Eddy Diffusion

Question 45

What can cause eddy diffusion?

Answer 45

Frictional exchange or by convection exchange

Question 46

Caused by variations in the roughness of natural surfaces and by the change in wind speed with height

Answer 46

Frictional exchange