Hotstart Engineering Lab Test Report
Test No.:
100826000
Project No.:
Report Name:
Avista – DDC S60 Deere 6068 Power usage
Report Written By: M. Merritt
Tested By:
R. Delke / D. Fricke
Date Started:
04/21/10
Date Completed: 05/27/10
Part No.:
1500W CTM, 1500W TPS, 2500W CTM, 2500W SB
Customer:
Avista
Reason for the Test:
Hotstart has been working with Avista to determine the savings in power
consumption when going from natural to forced circulation heating systems.
Previous testing has been performed showing power savings. The purpose of
this test is to finalize the analysis by running the systems in a more controlled
atmosphere than the previous tests.
Test Goal(s):
Determine the power savings of the forced circulation systems for the Detroit
Diesel Series 60 engine and John Deer 6068 engines at 0°F, 30°F, 50°F and
80°F.
Test Description:
Set up a DDC S60 and JD 6068 engine in the environmental chamber. Cold
soak the engine and then run the heating systems for 24hrs while monitoring
amperage and voltage.
Additionally, monitor the temperature of the engine to determine if it is heated
effectively. Use both thermocouples and Inferred Images to determine the
temperature.
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Set-Up: 
VOLTAGE
T-STAT SETTING
RUN TIME
120VAC
100-120°F
24HRS FROM COLD SOAK
ENVIROMENT
HOTSTART COLD CHAMBER, SHROUDED FROM AIR FLOW
TEMPERATURE: TC -> FLUKE DATA LOGGER
AMPERAGE: OMEGA OM-PLCV
VOLTAGE: OMEGA OM-PLCV
AVISTA'S IR CAMERA
HEATER INLET (FLUID)
HEATER OUTLET (FLUID)
ENGINE T-STAT (FLUID)
OULET FROM ENGINE (FLUID)
INLET TO ENGINE (FLUID)
HEAD RIGHT REAR (FLUID)
HEAD LEFT FRONT (FLUID)
BLOCK LEFT REAR (FLUID)
BLOCK RIGHT FRONT (FLUID)
AMBIENT (AIR)
VOLTAGE
AMPERAGE
DATA RECORDING
EQUIPMENT
DATA READINGS
The heaters used are:
DDC S60 – 2500W CTM (forced circulation, CTM251A3-N00)
DDC S60 – 2500W SB (natural circulation, SB125210-000)
JD 6068 – 1500W CTM (forced circulation, CTM152A3-N00)
JD 6068 – 1500W TPS (natural circulation, TPS151GT10-000)
Conclusions:
The forced circulation system demonstrated 16-64% savings depending on the
ambient temperature. At the coldest ambient, both systems were on 100% of the
time. Because of this, the forced circulation system consumed more energy
because of extra power draw of the pump. However, the natural circulation
system did not keep the engine at the desired temperature. Therefore, the
results at 0°F should not be factored into the energy savings analysis.
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DEERE 6068
yearly
usage
kW-hrs
kW-Hrs
in 12hrs
%
SAVINGS
kW-hrs
Savings / YR
$ SAVINGS / YR
CTM 80°F
TPS 80°F
1.83
5.16
64%
1339
3769
$
$
93.76
263.86
2,430
$
170.09
CTM 50°F
TPS 50°F
7.44
10.11
26%
5437
7389
$
$
380.59
517.21
1,952
$
136.62
CTM 30°F
TPS 30°F
12.58
14.95
16%
9189
10919
$
$
643.24
764.30
1,729
$
121.06
CTM 0°F
17.62
-17%
12873
$
901.08
(1,901)
$ (133.10)
*TPS 0°F
15.02
10971
$
767.98
kW-hrs
Savings / YR
$ SAVINGS / YR
x $.07 / hr
DDC S60
yearly
usage
kW-hrs
kW-Hrs
in 12hrs
%
SAVINGS
CTM 80°F
SB 80°F
6.79
10.54
36%
4963
7702
$
$
347.41
539.13
2,739
$
191.72
CTM 50°F
SB 50°F
16.47
19.77
17%
12028
14443
$
$
841.95
1,011.03
2,415
$
169.08
CTM 30°F
SB 30°F
22.33
24.21
8%
16309
17686
$
$
1,141.65
1,238.02
1,377
$
96.37
CTM 0°F
27.63
-15%
20181
$
1,412.69
(2,670)
$ (186.92)
*SB 0°F
23.97
17511
$
1,225.77
x $.07 / hr
*TPS & SB heater did not maintain desired engine temperature at 0°F
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It is worth noting that the forced circulation systems did a much better job of
maintaining the engine at a consistent temperature. The natural circulation
systems had outlet temperatures around 170°F with inlet temperatures around
120°F (figure 1). This excessive outlet temperature results in a large amount of
heat being wasted to the ambient leading to increased power consumption.
Figure 2 shows the temperature profile of the CTM (forced circulation) on the
DDC S60 engine. This shows that the CTM keeps the engine within 40°F where
the SB heater has a range of 70°F.
The excessive outlet temperature can also be visualized in an IR image (figure 3)
Findings:
Avista Test #3 60 series DD w/SB125210-200; 240V, 2500W
w/100/120 T-stat, 50 degree ambient
200
Temperature in 0F
150
Heater
Inlet
Heater
Outlet
100
Head left
rear
Head right
front
50
Ambient
0
0
180
360
540
720
900
Time in minutes
1080
1260
1440
Figure 1 – DDC60 w/ 2500W SB
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Avista Test #12 60 series DD w/2500W, 240V CTM,
w/100/120 T-stat @ 50 degrees ambient
200
Temperature in 0F
150
Heater
Inlet
Heater
Outlet
100
Head left
rear
Head right
front
50
Ambient
0
0
180
360
540
720
900
Time in minutes
1080
1260
1440
Figure 1 – DDC60 w/ 2500W CTM
Figure 3 – IR Image TPS vs CTM, 30°c ambient
Equipment Utilized:
Equipment name
Calibration
Date
Equipment name
Calibration
Date
Omege OM-PLCV logger
Fluke Data Logger
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