Regional Technical Forum

October 9, 2007

2

ECMs for Compressor Head Cooling Fans

Measure– Retrofit of compressor head cooling fans

• on low temperature reciprocating compressor systems• compressor integral part of a refrigeration system with a

remote condenser Base case

– shaded pole motors of 35-55 watt output Proposed case

– electronically commutated motor of no more than 20 watt output

3

ECMs for Compressor Head Cooling Fans

Picture from Kroger

4

ECMs for Compressor Head Cooling Fans

EnergySmart Measuers

Unitized or

Modeled Savings

Unit of measure

Demand Savings

(kW)

Energy Savings (kWh)

Measure life

Shape Total Measure

Cost ($2007)

Measure Cost Source

Lost Opportunity Measure

RTF B/C Ratio

Annual O&M Cost

ECMs for Compressor Head Fans

Unitized motor 0.12 776 15GrocRef

Load62.00$

Kroger contractor estimates

N 6.8 NA

5

Case Lighting - Low Temp, T8/T12 to LED

Measure– Retrofit case lighting in existing low temperature

display cases Base case

– T8 or T12 lamps and electronic ballasts Proposed case

– LED lighting system– Power source should be located outside of the

refrigerated space

6

Case Lighting - Low Temp, T8/T12 to LED

Courtesy of a GE presentation 6/20/06

7

Case Lighting - Low Temp, T8/T12 to LED

Source: Pacific Gas and Electric Company Emerging Technologies Program Application Assessment Report #0608 prepared by EMCOR energy services.

Lighting Quality AttributeFluorescent

SystemLED

system

Luminance (cd/m2) 134 90Illuminance (fc) 186 129Max-min luminance ratio (measured at center of door) 3.3 to 1 1.7 to 1

8

Case Lighting - Low Temp, T8/T12 to LED

EnergySmart Measuers

Unitized or

Modeled Savings

Unit of measure

Demand Savings

(kW)

Energy Savings (kWh)

Measure life

Shape Total Measure

Cost ($2000)

Measure Cost Source

Lost Opportunity Measure

RTF B/C Ratio

Annual O&M Cost ($2000)

Case Lighting - Low Temp - T8 to LED

UnitizedLinear Feet of Case

0.02 148 8 Flat 79.32$

PG&E Study (material cost and labor hrs), NW labor rates

N 0.7 (3.07)$

Case Lighting - Low Temp - T12 to LED

UnitizedLinear Feet of Case

0.04 265 8 Flat 79.32$

PG&E Study (material cost and labor hrs), NW labor rates

N 1.1 (3.07)$