Mao - Human Comfort

Front 1

Psychrometric Chart

Back 1

- Dry bulb temp - vertical lines
- Wet bulb temp - diagonal down to the right

- Dry bulb > wet bulb except at RH=100%, then =
- horizontal lines represent amt of water in the air
- Relative Humidity - curved up to the right
- Enthalpy - sensible + latent

- not affected soley by aire movement

Front 2

Bulb Temps

Back 2

Dry bulb - constant stored sensible heat
Wet bulb - rate of evaporation taken into account

Front 3

Relative Humidity

Back 3

- Percentage of complete saturation (how much water is in air at a given temp compared too how much the air could hold at that temp)
- This is why you put the vapor barrier on warm side of insulation in a wall

Front 4

Comfort Range/Zone

Back 4

About 65-78 temp at 25-75 humidity

Front 5

Effective Temp

Back 5

Combination of ambient air temp (dry bulb) and the MRT

Front 6

Declination Angle

Back 6

- Tilt of North Pole in relation to Sun
- Seasons caused by this, not distance to sun
- +23.5° June 21 and -23.5° December 21
- 0° at equinoxes

Front 7

4 Main Climate Types

Back 7

Cold
Temperate
Hot Humid
Hot Arid

Front 8

Passive vs Active

Back 8

Active - collector and storage are separate

Front 9

Direct vs Indirect

Back 9

Direct - mass, trombe, or water wall
- can be combined with convective loop
Indirect - mass not in direct path of sunlight
- takes about 4x as much mass as direct gain