PA - Climate Strategies Flashcards

1
Q

What is the best overall orientation for a building in the northern hemisphere?

A

principal facade facing south

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2
Q

On which facade do you use overhangs?

A

South

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3
Q

On which facade do you use vertical sun baffles?

A

East & West

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4
Q

Where should you place outdoor activities in a hot, humid climate?

A

where they receive shade from the building or trees

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5
Q

Where should you place outdoor activities in a temperate climate?

A

where they receive warmth from the sun in winter, spring, fall

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6
Q

Are louvers more effective inside or outside of a building?

A

exterior, but both work

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7
Q

In cold climates, where should you place the entry?

A

the south side, where direct sun can melt the snow and ice in winter

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8
Q

Where is the cool region?

A

Northern part of middle US, mountainous regions of Wyoming and Colorado

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9
Q

Where is the temperate region?

A

most of the middle latitudes of the US, including northwest and north east

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10
Q

Where is the hot humid region?

A

southeastern part of US

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11
Q

Where is the hot-arid region?

A

from southern California across the desert southwest to portions of southern Texas

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12
Q

What are the design strategies for cold climates?

A

minimize exposed surface area to reduce heat loss (ex. compact forms, buildings with cubical shapes, partially underground)
minimize northern exposure
minimize apertures on northern facade
air locks at entries
landscape to block winter winds
large windows facing south, small windows E & W, minimal or no windows north
use interior materials with high thermal mass
include summer shading for glazed areas
dark or medium colors for building exterior

NOT passive solar heating

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13
Q

What size windows should be on each facade for a cold climate?

A

large windows facing south, small windows E & W, minimal or no windows north

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14
Q

What should you consider for entry areas in cold climates?

A

air locks at entries
avoid putting entry on north side
south side is best so the sun can melt snow

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15
Q

What color should the exterior be in a cold climate?

A

dark or medium dark

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16
Q

When do you maximize thermal mass vs minimize

A

maximize in cold climates
minimize in hot humid climates

17
Q

What is a good form for a building in a cold climate?

A

compact with small exterior surface area
cubical shapes
partially underground

18
Q

What are the design strategies for temperate climates?

A

minimize northern exposure

block winter winds

orient buildings to maximize southern exposure (long facade along E/W axis, angled slightly east)

shade south side of building during the summer with deciduous trees and awnings / overhangs

nighttime ventilation for the summer

active and passive solar heating

use medium colors for the exterior

19
Q

How should you orient a building in a temperate climate?

A

orient buildings to maximize southern exposure (long facade along E/W axis, angled slightly east)

20
Q

What color should the exterior be in a temperate climate?

A

medium values

21
Q

What are the design strategies for a hot-humid climate?

A

maximize amount of natural ventilation by using narrow floor plans with cross ventilation, large open windows, high ceilings, porches & breezeways

shade using vegetation or double roofs

minimize thermal mass

shade all openings

light colors for the building exterior

22
Q

How can you maximize ventilation in a hot humid climate?

A

using narrow floor plans with cross ventilation, large open windows, high ceilings, porches & breezeways

23
Q

What color exterior is best for hot humid climate?

A

light values

24
Q

What design strategies are best for hot-arid climates?

A

shading from direct sunlight

use materials with high thermal mass

nighttime ventilation

evaporative cooling via water features (pools, rooftop ponds)

use compact forms with smallest surface area possible

minimize opening sizes

light colored exterior

25
Q

What climate can you use evaporative cooling for?

A

hot arid

26
Q

What form should buildings in hot arid take?

A

use compact forms with smallest surface area possible

27
Q

Which climate is most difficult to design for without mechanical cooling?

A

hot humid

28
Q

What are some examples of passive solar heating?

A

long axis in the E/W direction, southern facade is within 15 degrees of south

long and narrow building form

thermal mass

deciduous trees on south facade, wither deciduous or evergreen trees on east and west facades

29
Q

What are examples of natural cooling?

A

radiative cooling (thermal mass)

evaporative cooling,

ground coupling - heat pump

shade using landscaping

fixed shading devices

minimize glazing on east and west facades

light colored or reflective materials

limit paving

30
Q

What are the different zones on a hill as far as building placement?

A

bottom - cool air and fog sinks here

middle - moderate

top - windy

31
Q

What is the difference between high and low albedo?

A

If something has a high albedo, it reflects larger amounts of light energy back into the atmosphere. If something has a low albedo, it absorbs most of the light that hits it. As more light is reflected off an object, the less heat energy it holds. When more light is absorbed, the more the object takes in that heat.

high albedo: reflects back more light, holds less heat

low albedo: absorbs more light, holds more heat