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A.R.E. - Building Systems > BS: Lesson 4 - Comfort, Climate and Solar Design > Flashcards

BS: Lesson 4 - Comfort, Climate and Solar Design Flashcards

1
Q

What are the 5 factors that affect human comfort?

A

culture

recent exposure

health

age

metabolism

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2
Q

In what direction does heat flow.

A

From hot to cold

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3
Q

In regards to human comfort, what happens when the environment’s temperature reaches 98.6 degrees?

A

All heat loss from conduction, convection and radiation stops

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4
Q

What happens when the environment’s temperature rises higher than 98.6 degrees?

A

The body direction of heat flow reverses and the body tries to remain at 98.6 degrees.

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5
Q

What is Enthalpy?

A

The sum of sensible and latent heat.

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6
Q

What is a Psychrometric Chart?

A

A chart used to show the relationship between the environment’s temperature and humidity and its EFFECT on human comfort.

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7
Q

A constant amount of water in the air DOES or DOES NOT represents a constant relative humidity (RH)

A

Does not.

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8
Q

On a Psychrometric Chart, the curved lines represent what?

A

Relative humidity.

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9
Q

On a Psychrometric Chart, the vertical lines represent what?

A

Dry-bulb temperature (air temperature)

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10
Q

On a Psychrometric Chart, the horizontal lines represent what?

A

The amount of water contained by the air (i.e. grains of moisture per pound of dry air)

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11
Q

On a Psychrometric Chart, the diagonal lines running right to left represent what?

A

Wet-bulb temperature.

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12
Q

What is relative humidity?

A

The percentage of how much water is in the air at a give temperature compared to how much the air could hold at that temperature.

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13
Q

When relative humidity increases, temperature will________ ?

A

decrease

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13
Q

Which can hold more water? Cold or Warm air?

A

Warm air

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14
Q

True or False.

Temperature and relative humidity are interrelated?

A

True

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15
Q

In general, the comfort zone for most people doing calm or sedentary work, lightly clothed, would be_____?

A

65 - 78 degress

16
Q

Mean Radiant Temperature (MRT)

A

The weighted average of all of the temperatures of all of the surfaces visible from a given position.

17
Q

Regarding the Psychrometric Chart, the comfort zone is effected by what 4 climate charatcteristics?

A

temperature

relative humidity

mean radiant temperature

air velocity

18
Q

In regards to Solar Design for climate and comfort, building design must respond to what two environmental factor?

A

sun

climate

19
Q

In the winter there is a great amount of sun on which facade of a building?

A

south facing facade

20
Q

In the summer there is a great deal of sun on which building facade?

A

east

west

roof

horizontal skylights

21
Q

The southern sun exposures for building facades should be minimized or maximized?

A

maximized

22
Q

What facades and/or portions of a building should be minimized to reduce the summer sun exposure?

A

eastern

western

horizontal skylights

23
Q

In cold climates, a sawtooth clerestory should face which direction, north or south?

A

south

24
Q

In warm climates, a sawtooth clerestory should face with direction, north or south?

A

north

25
Q

In the summer, what direction does the sun rise and set?

A

rises north of east

sets north of west

26
Q

In the winter, what direction does the sun rise and set?

A

rises south of east

sets south of west

27
Q

What type of building form works best for cold climates?

A

simple - compact

minimal surface exposure area and maximum southern exposure

sloping roof facing north

28
Q

What is a temperate climate?

A

cold winters and hot summers

29
Q

What type of building form works best for temperate climates?

A

buildings with east/west orientation

long south and north facade

porches on south facade

awnings on windows

30
Q

Deciduous tress are used for what?

A

provide shade in summer

noise reduction

31
Q

What are evergeeen tress used for?

A

blocks winter winds from north

32
Q

Which climate type tends to have a huge diurnal (day to night) temperature swing?

A

hot arid

33
Q

Which climate type do you want to orientate you building east to west, elongating the southern elevation?

A

temperate

34
Q

Which climate type promotes the use of balconies, porches and/o breezeways?

A

temperate and hot humid

35
Q

Which climate type would you use a thermal mass for heating and cooling?

A

hot arid

A.R.E. - Building Systems (8 decks)

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