Engmec
619 palavras
3 páginas
550.25 0.30 SENSIBLE HEAT RATIO = Qs / Qt 0.35
50
90 200 190 85 85 0.40 1.30 1.25 1.20 1.15 170 1.10
55
14.6 SPE
14.8
180
15.0
re istu
45
CIF
mo
IC V
ocia
BAROMETRIC PRESSURE: 29.914 in. HG ir a
ted
OLU
14.4
0.45 1.05
ME
ass
°F
nd
UR E-
80
160 80 150 HUMIDITY RATIO (or Specific Humidity) GRAINS OF MOISTURE PER POUND OF DRY AIR 0.50
- Cu bic f
ry a
of d
PE
40
RA T
1.00 0.95 0.90 75
50
eet per
EM
lb.
UL BT
per
WE
lb. o
Btu
TB
14.2
TB
ULB
140
f dry
Y-
WE
TH ALP
75
TEM
ENTHALPY - Btu per lb. of dry air and associated moisture
PER ATU
air
RE
0.55 0.85 0.60 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 VAPOR PRESSURE - INCHES OF MERCURY
EN
- °F
130
35
120
70
30
DEW POINT TEMPERATURE - °F
14.0
90
110
%
70
0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 SENSIBLE HEAT RATIO = Qs / Qt
100
45
13.8
65
25
13.6
80
%
65
90
% 70
60
20
80
60
40
60
55
%
70
13.4
% 50
55
60
50
13.2
15
50 45
45
13.0
40%
50
40
12.8
40
30%
30
40 35 30 20
35
35
10
30
32
12.6
20%
HUMIDITY
10 0 110
25
10% RELA
TIVE
25 20 10 0 115
30
0.05
20 30 40 50 60
STANDARD AIR
70
80 DRY BULB TEMPERATURE - °F
90
100
Chart by: HANDS DOWN SOFTWARE, www.handsdownsoftware.com
10
15 ENTHALPY - Btu per lb. of dry air and associated moisture
20
25
0.20
0.25 SENSIBLE HEAT RATIO = Qs / Qt
0.30
110
120
30
100
0.35
34.0 33.0
28 30
0.92 0.94
30 26
WE
0.90
120
32.0 31.0 0.40 30.0 29.0
90
BAROMETRIC PRESSURE: 101.301 kPa
80
TB
ULB
TEM
PER
ATU
24
RE - °C
110
28.0 0.45 27.0 26.0 25.0
22
70
HUMIDITY RATIO (or Specific Humidity) GRAMS OF MOISTURE PER KILOGRAM OF DRY AIR
25