VSD Incentives and Applications

Amaan Laheri, KEMA

Agenda

• Energy efficiency and Variable Speed Drives (VSD)• New prescriptive VSD incentive application for :

– Chillers– Fans– Pumps– Air Compressors

• Ineligible measures• Q & A

Energy Efficiency and VSD

• How can a VSD improve energy efficiency?

• How is the VSD controlled?

Total

% of Load kW Hours kW Hours kWh

100%

90%

80%

60%

50%

40%

30%

Base annual kWh =

Total

% of Load kW Hours kW Hours kWh

100%

90%

80%

60%

50%

40%

30%

Propose annual kWh =

Annual kWh Saving =

VSD WORKSHEET

Unit 1 Unit 2

Without Variable Frequency Drive

With Variable Frequency Drive

Unit 1 Unit 2

Now Prescriptive – VSDs on:

• Fan or pump motors, 200 HP or less: $60 per HP

• Chillers, $25 per HP

• Air compressors <100 HP, $100 per HP

A Look at the New Application

Up to 100 HP 101 HP to 200 HP Over 200 HP

Custom Application

VSDs on Fan, Pump or Air Compressor Motors

ONF 8760 960 1 $25 $24,000

Supply fan 1&2 RFA DD DP 5814

40 2 $60 $4,800

SFA DD BI 5814 60 2 $60 $7,200

$

Return fan 1&2Chiller #7Air Compressor #3 ACP N/A TWS 5814 50 1 $100 $5,000AHU SF#10 SFA IGV BI 8,760 125 1 $60 $7,500

Motors Over 100 HP

AHU SF-10Labs, offices, classrooms

Conditioned air in labs, offices, & classroomsB1 – air foil

1259

2%

Acme Fan Co.75,000

cfm

AFC-124b4 in H2OInlet guide

vanes3 in H2O

24/7 24/7

N/A N/A

277

128

0.89 54.6

Varies

3 in H2O

55.0 87650.6 394247.3 3942

3760Estimated

57.8 87635.2 394223.1 3942

8760

Incentive Capping

Specifications

• Existing throttling devices such as inlet vanes, bypass dampers, and throttling valves must be permanently removed or disabled.

• VSD must be installed with automatic control technology.

Not Eligible for Incentives

• VSDs installed on equipment that operates less than 1,200 hours per year

• Replacements of existing VSDs • VSDs installed on redundant/backup motors• VSDs installed in place of multi-speed flow control equipment (such as

two-speed cooling tower fans)• VSDs installed in place of variable pitch blade flow control equipment• VSDs installed for the purpose of “soft-starting” motors• VSDs installed on pumps where affinity laws are not in effect, such as

positive displacement pumps

Where to find the New Application

www.ComEd.com/bizincentives

• ComEdSmartIdeas@KEMA.com • Program questions (888) 806-2273• Fax: 1-630-480-3436• Outreach Team

630-480-3434• www.ComEd.com/bizincentives

• Program information

• Application forms

• Policy and Procedures Manual

For More Information

?

Thank you!