head office – case study
DESCRIPTION
Head Office – Case Study. Make the most of your energy. Studying Utility Bill. Consumption. Fixed Costs. Consumption Summary. Seasonal Load Analysis. Consumption. kWh. Bill divided to two main Parts. Fixed Costs. Lighting Control. After. Before. Offices. No supervision or control. - PowerPoint PPT PresentationTRANSCRIPT
Make the most of your energy
Head Office – Case Study
Schneider Electric 2- Division - Name – Date
Consumption
Fixed Costs
Studying Utility Bill
Schneider Electric 3- Division - Name – Date
Bill divided to two main Parts
Consum
ption
Fixed Costs
Consumption Summary
kWh
Seasonal Load Analysis
Schneider Electric 4- Division - Name – Date
On 24/7
manually operated
No supervision or control
Installing Control System
Setup operating strategy
Setup an operating schedule
Lighting Control
Before After
Offices
Basement
Outside Lighting
saving will be around 57% from the Lighting consumption which is about 20% from total consumption monthly
Schneider Electric 5- Division - Name – Date
21006
16209
Lighting Effect Graph
Schneider Electric 6- Division - Name – Date
Air CooledChiller
Air Handling Unit
Fan Coil Unit
CHWS
CHWR
Insulation
CHW Pumps
HVAC System
Schneider Electric 7- Division - Name – Date
Opportunities of Saving in HVAC System
Chillers
• 2 Chillers each is 250 ton
Air Handling Units
• 4 AHU’s with different capacities
Fan Coil Units
• 109 FCU’s with different capacities
Building Envelope
• Doors, infiltrations and windows
Chiller Tuning
Kwh
Time
Setpoints
saving will be 14% from the consumption of the chiller and 1% from the total consumption
Schneider Electric 8- Division - Name – Date
Opportunities of Saving in HVAC System
Chillers
• 2 Chillers each is 250 ton
Air Handling Units
• 4 AHU’s with different capacities
Fan Coil Units
• 109 FCU’s with different capacities
Building Envelope
• Doors, infiltrations and windows
Opportunity-we have different sizes of FCU’s each have different Capacity with a specified amount of water for each Capacity
Audit action:-balancing the system by adjusting the amount of water Entering each fan
Saving will be 6% from total consumption
Schneider Electric 9- Division - Name – Date
Opportunities of Saving in HVAC System
Chillers
• 2 Chillers each is 250 ton
Air Handling Units
• 4 AHU’s with different capacities
Fan Coil Units
• 109 FCU’s with different capacities
Building Envelope
• Doors, infiltrations and windows
Opportunities:1- AHU serving Training room2- AHU serving LAB
Recommendations:1- For Training room installing 2 split units and occupancy sensors in which the payback will be with in 12 months.2- For LAB installing occupancy sensor in which the payback Period will be a month.
saving will be around 33% of the Air Handling Units Consumption and 3% from total consumption
Schneider Electric 10- Division - Name – Date
Opportunities of Saving in HVAC System
Chillers
• 2 Chillers each is 250 ton
Air Handling Units
• 4 AHU’s with different capacities
Fan Coil Units
• 109 FCU’s with different capacities
Building Envelope
• Doors, infiltrations and windows
Doors:-the building had 139 doors.
Infiltration:-parts of the suspended ceiling is opened.
Windows:-windows subjected to direct sunlight with no curtains gain a lot of heat.
All the above lead’s to reach the setpoint due to heat loss which make the system run in it’s maximum capacity
Schneider Electric 11- Division - Name – Date
Bill divided to two main Parts
Consum
ption
Fixed Costs
Recommendations-Peak shaving using PLC with BMS and it’s payback will be in a month
5434
6194
Zero
KW
Saving will be 6% from the average monthly bill
Schneider Electric 12- Division - Name – Date
Action Winter savings
Summer savings
Investments(EGP)
Expected Payback years
Date to execute
Web energy expanding - - 20,000 - Nov 09
Lighting 20% 10.5% 1500 Nov 09
Total for lighting 15 % 21,500 8 months
AHU’s - 3% 10,000 Dec 09
Chiller - 6% 2,000
Building Envelope(windows + doors) - - 24,000 Oct 09
Total for HVAC 5 % 36,000 2 years
taxes 3% 2% - -
Fixed Costs 15% 1.5% 2,500 2 month Dec 09
Saving summary in bills & ROI investment calculations