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