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?

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?

24
In warm climates, a sawtooth clerestory should face with direction, north or south?
north
25
In the summer, what direction does the sun rise and set?
rises north of east sets north of west
26
In the winter, what direction does the sun rise and set?
rises south of east sets south of west
27
What type of building form works best for cold climates?
simple - compact minimal surface exposure area and maximum southern exposure sloping roof facing north
28
What is a temperate climate?
cold winters and hot summers
29
What type of building form works best for temperate climates?
buildings with east/west orientation long south and north facade porches on south facade awnings on windows
30
Deciduous tress are used for what?
provide shade in summer noise reduction
31
What are evergeeen tress used for?
blocks winter winds from north
32
Which climate type tends to have a huge diurnal (day to night) temperature swing?
hot arid
33
Which climate type do you want to orientate you building east to west, elongating the southern elevation?
temperate
34
Which climate type promotes the use of balconies, porches and/o breezeways?
temperate and hot humid
35
Which climate type would you use a thermal mass for heating and cooling?
hot arid