Analysis of Chilled Water System Presented by Outline
Introduction to Chilled Water System Motivation Outdoor Temperature
Classification Analysis of Power Consumption for Three Hosts
Analysis of Chilled Water Leaving Temperature Conclusion Future
Work Outline Introduction to Chilled Water System Motivation
Outdoor Temperature Classification Analysis of Power Consumption
for Three Hosts Analysis of Chilled Water Leaving Temperature
Conclusion Future Work Introduction to Chilled Water System NTU
CSIE Chilled Water System Specification of Chilled Water System 187
kW 11.2 kW 22.5 kW *2 30 kW 7.5 kW Total kW ( ) Power Consumption
of Chilled Water System State of Chilled Water System Full load( ,
) 240RT(refrigeration ton) 380V, 320A (181kW) Light load( , ) 80RT
380V, 130A (72.7kW) Stop( , ) 0RT 0V, 0A but it never happened 1RT
1 0 0 (Kcal/hr or Btu/hr) State of Chilled Water System Example :
chilled water leaving temperature 7 chilled water leaving
temperature of next time : 9 Full load Light load Full load about 6
Stop Electric Meter of NTU CSIE Outline Introduction to Chilled
Water System Motivation Outdoor Temperature Classification Analysis
of Power Consumption for Three Hosts Analysis of Chilled Water
Leaving Temperature Conclusion Future Work Motivation The power
consumption of chilled water system takes 40%~50% of all power
consumption, but vs. : 6% vs. : 588 6.78% vs. : 59 14.17%
Motivation In these cases, we observe that chilled water system
makes a big waste and some people feel very cool. We want to adjust
the chilled water leaving temperature to save the energy and let
everyone feeling comfortable. Outline Introduction to Chilled Water
System Motivation Outdoor Temperature Classification Analysis of
Power Consumption for Three Hosts Analysis of Chilled Water Leaving
Temperature Conclusion Future Work Why Classify the Outdoor
Temperature ? Under similar outdoor temperature conditions,
comparing the power consumption between two days. Outdoor
Temperature Classification Source of Weathers Data : Outdoor
Temperature Classification DATA (unit :minute) Max. Min. Avg.
temperature of a day Parse_day.cpp Avg. temperature of an hour
Parse_hour.cpp Classify.cpp Classification Classify.cpp 24hour Cold
: % Mid : % Hot : % threshold : 20, 26 C :1 CM :2 M :3 MH :4 H :5
CH :6 CMH :7 Classification C, M, H : E.g. : (2, 18, 4) where (C,
M, H) M CMH : E.g. : (7, 9, 8) where (C, M, H) CMH CM,MH,CH : E.g.
: (11, 9, 4) where (C, M, H) CM E.g. : (11, 0, 13) where (C, M, H)
CH Classify.cpp Weather Classification Outline Introduction to
Chilled Water System Motivation Outdoor Temperature Classification
Analysis of Power Consumption for Three Hosts Analysis of Chilled
Water Leaving Temperature Conclusion Future Work Analysis of Power
Consumption for Three Hosts Host_3 (7 ) Host_1 (7 ) Host_2 (7 )
3/24-3/303/10-3/164/07-4/13 ()() (2)9353(1)9092(1)8922 ()()
(1)8821(1)9213(1)9347 ()() (1)8702(2)9258(1)9408 ()()
(2)8258(1)8696(2)9061 ()() (1)8110(4)8934(3)9086 ()()
(2)8610(3)9506(4)9713 ()() (2)9013(1)9353(1)9541 Outline
Introduction to Chilled Water System Motivation Outdoor Temperature
Classification Analysis of Power Consumption for Three Hosts
Analysis of Chilled Water Leaving Temperature Conclusion Future
Work Schedule of Chilled Water Leaving Temperature TargetLeaving
Temperature Time Host_3 99 4/14( ) 4/20( ) Host_1 12 4/21( ) 4/27(
) Host_2 99 4/28( ) 5/04( ) Host_3 99 5/05( ) 5/11( ) Analysis of
Chilled Water Leaving Temperature Host_2 (7 ) Host_2 (7 ) Host_2 (9
) 3/17-3/234/07-4/134/28-5/04 ()() (1)9326(1)8922(2)9268 ()()
(2)9365(1)9347(3)8857 ()() (7)9430(1)9408(2)8739 ()()
(3)9040(2)9061(4)8295 ()() (3)8931(3)9086(4)8472 ()()
(3)9541(4)9713(4)9129 ()() (4)9848(1)9541(4)8652 Analysis of
Chilled Water Leaving Temperature Host_3 (7 ) Host_3 (7 ) Host_3 (9
) Host_3 (9 ) 3/03-3/093/24-3/304/14-4/205/05-5/11 ()()
(2)9428(2)9353(2)9050(4)8692 ()() (3)9379(1)8821(1)8764(3)8601 ()()
(3)9452(1)8702(1)8584(3)8404 ()() (3)8783(2)8258(3)8296(3)7555 ()()
(1)8232(1)8110(3)8355(3)7591 ()() (1)8735(2)8610(4)9077(3)8285 ()()
(1)8669(2)9013(3)9358(3)8329 Schedule of Local Pump before 4/28( )
1 : auto 2 : auto 4/28( )16:30 1 : 30%(29gpm) 2 : 60%(150gpm)
(5/03( )1 5F ) 5/03( )15:30 1 : 40%(46gpm) 2 : 50%(96gpm) 5/08(
)21:00 1 : 60%(80gpm) 2 : 50%(80gpm) GPM : Gallon per minute
Outline Introduction to Chilled Water System Motivation Outdoor
Temperature Classification Analysis of Power Consumption for Three
Hosts Analysis of Chilled Water Leaving Temperature Conclusion
Future Work Conclusion Host_3 spends less electricity than host_1,
host_2 Increase its work time! Adjusting the chilled water leaving
temperature can decrease the cost of electricity. The rotation rate
of local pump may have a big influence on chiller systems cost.
Outline Introduction to Chilled Water System Motivation Outdoor
Temperature Classification Analysis of Power Consumption for Three
Hosts Analysis of Chilled Water Leaving Temperature Conclusion
Future Work Current Work From Chiller System - peripherals -
chilled water leaving temperature - monitor Future Work From
Chiller System - peripherals - chilled water leaving temperature -
monitor From User Experiment Seminar Room Teaching Room Professor
Room LAB Open the AC controller of all Seminar Room & Teaching
Room at 6:00am - 8:00am
