Section EXERCISE 16 PROBLEMS-PART III (English Units) Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain (as shown). The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F/1000 feet and the SAR is 3.3°F/1000 feet. Assume that condensation begins at 100% relative humidity and that no evaporation takes place as the parcel descends. Indicate calculated temperatures to decimal place.eTemp ea leveT 7Co. F Dny adia bahe roate, DAR SF00 al clecrase in p1000 AT 10005-5 'F aj temp e1000 s T-AT-TGS windward O0 3.5 5000 ft 55 FI,000 4000 ft LCL O.0 3000 ft 70 S-16-SGOO 2000 ft. DAL -SS Leeuwovd O1000 ft. S.SYIO 76.5°F Oft 76 ST-5.S 1. Calculate the temperature of the parcel at the following elevations as it rises up the wind- ward side of the mountain. (a) 1000 feet 71 F (b) 3000 feetoO °F (e) 6000 feet Sor F 2 (a) After the parcel of air has descended down the lee side of the mountain to sea level, what is the temperature of the parcel? 83OF (b) Why is the parcel now warmer than it was at sea level on the windward side (what is the source of the heat energy)? The par-el lost all water vaper leavi9oinly dhne bavnitepeoture inthe Coair On the windward side of the mountain, is the relative humidity of the parcel increasing or decreasing as it rises from sea level to 3000 feet? 3. (a) nses Why? ses ih onesnder lower pressure and expands AS air ex (pands it cools adiabaticaly AS air vises a satoae elattve hum (b) 4. (a) On the lee side of the mountain, is the relative humidity t Some pan hceseS of the parcel increasing or decreasing as it descends from 6000 feet to sea level? r ecyases Why?as airs warmsis Pdpacity increas and Soit Caunnet be Satrated s (b) Wh 97 Copyright 2017 Pearson Education, Inc. SAR ni
Section EXERCISE 16 PROBLEMS-PART III (English Units) Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain (as shown). The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F/1000 feet and the SAR is 3.3°F/1000 feet. Assume that condensation begins at 100% relative humidity and that no evaporation takes place as the parcel descends. Indicate calculated temperatures to decimal place.eTemp ea leveT 7Co. F Dny adia bahe roate, DAR SF00 al clecrase in p1000 AT 10005-5 'F aj temp e1000 s T-AT-TGS windward O0 3.5 5000 ft 55 FI,000 4000 ft LCL O.0 3000 ft 70 S-16-SGOO 2000 ft. DAL -SS Leeuwovd O1000 ft. S.SYIO 76.5°F Oft 76 ST-5.S 1. Calculate the temperature of the parcel at the following elevations as it rises up the wind- ward side of the mountain. (a) 1000 feet 71 F (b) 3000 feetoO °F (e) 6000 feet Sor F 2 (a) After the parcel of air has descended down the lee side of the mountain to sea level, what is the temperature of the parcel? 83OF (b) Why is the parcel now warmer than it was at sea level on the windward side (what is the source of the heat energy)? The par-el lost all water vaper leavi9oinly dhne bavnitepeoture inthe Coair On the windward side of the mountain, is the relative humidity of the parcel increasing or decreasing as it rises from sea level to 3000 feet? 3. (a) nses Why? ses ih onesnder lower pressure and expands AS air ex (pands it cools adiabaticaly AS air vises a satoae elattve hum (b) 4. (a) On the lee side of the mountain, is the relative humidity t Some pan hceseS of the parcel increasing or decreasing as it descends from 6000 feet to sea level? r ecyases Why?as airs warmsis Pdpacity increas and Soit Caunnet be Satrated s (b) Wh 97 Copyright 2017 Pearson Education, Inc. SAR ni
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10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Transcribed Image Text:Section
EXERCISE 16 PROBLEMS-PART III (English Units)
Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain (as shown). The
initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of
the parcel is 3000 feet. The DAR is 5.5°F/1000 feet and the SAR is 3.3°F/1000 feet. Assume that
condensation begins at 100% relative humidity and that no evaporation takes place as the parcel
descends. Indicate calculated temperatures to decimal place.eTemp ea leveT 7Co.
F
Dny adia bahe roate, DAR SF00
al clecrase in p1000 AT 10005-5 'F
aj
temp e1000 s T-AT-TGS
windward
O0
3.5
5000 ft
55 FI,000
4000 ft
LCL
O.0
3000 ft
70 S-16-SGOO
2000 ft.
DAL
-SS
Leeuwovd
O1000 ft.
S.SYIO
76.5°F
Oft
76 ST-5.S
1.
Calculate the temperature of the parcel at the following elevations as it rises up the wind-
ward side of the mountain.
(a) 1000 feet
71
F (b) 3000 feetoO
°F (e) 6000 feet Sor
F
2
(a)
After the parcel of air has descended down the lee side of the
mountain to sea level, what is the temperature of the parcel?
83OF
(b)
Why is the parcel now warmer than it was at sea level on the windward side
(what is the source of the heat energy)? The par-el lost all water
vaper leavi9oinly dhne bavnitepeoture inthe
Coair
On the windward side of the mountain, is the relative humidity
of the parcel increasing or decreasing as it rises from sea level
to 3000 feet?
3.
(a)
nses
Why? ses ih onesnder lower pressure
and expands AS air ex (pands it cools adiabaticaly
AS air vises a satoae elattve hum
(b)
4.
(a) On the lee side of the mountain, is the relative humidity t Some pan hceseS
of the parcel increasing or decreasing as it descends from
6000 feet to sea level?
r
ecyases
Why?as airs warmsis Pdpacity increas and Soit
Caunnet be Satrated s
(b)
Wh
97
Copyright 2017 Pearson Education, Inc.
SAR
ni
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