# Presentation: 438695

## Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation ProjectFall 2007 Composite Data ProductsSeptember 13, 2007

**Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project*****Fall 2007 ******Composite Data Products******September 13, 2007***

- Keith Wipke, Sam Sprik, Jennifer Kurtz, Holly Thomas

## CDP#1: Hours Accumulated and Projected Hours to 10% Stack Voltage Degradation

**CDP#1: Hours Accumulated and ****Projected Hours to 10% Stack Voltage Degradation**

## CDP#2: Vehicle Range

**CDP#2: Vehicle Range**

## CDP#6: Fuel Economy

**CDP#6: Fuel Economy**

## CDP#8: FC System Efficiency

**CDP#8: FC System Efficiency**

## CDP#9: Safety Reports – Vehicles

## CDP#10: Storage Weight % Hydrogen

## CDP#11: Volumetric Capacity of H2Storage

## CDP#12: Vehicle Hydrogen Tank Cycle Life

## CDP#18: Refueling Rates

**CDP#18: Refueling Rates**

## CDP#20: Safety Reports – Infrastructure

**CDP#20: Safety Reports – Infrastructure**

## CDP#21: Range of Ambient TemperatureDuring Vehicle Operation

**CDP#21: Range of Ambient Temperature****During Vehicle Operation**

## CDP#22: Vehicle Operating Hours

## CDP#23: Vehicles vs. Miles Traveled

## CDP#24: Cumulative Vehicle Miles Traveled

**CDP#24: Cumulative Vehicle Miles Traveled**

## CDP#25: Vehicle H2 Storage Technologies

## CDP#26: Cumulative H2 Produced or Dispensed

## CDP#27: Hydrogen Purity Scatter Plot

**CDP#27: Hydrogen Purity Scatter Plot**

## CDP #28: Hydrogen Impurities Scatter Plot

**CDP #28: Hydrogen Impurities Scatter Plot**

## CDP#29: Fueling Rates – Communication and Non-Communication Fills

## CDP#30: Infrastructure Maintenance

**CDP#30: Infrastructure Maintenance**

## CDP#31: Number of Reporting Stations

## CDP#32: Infrastructure Hydrogen Production Methods

**CDP#32: Infrastructure Hydrogen Production Methods**

## CDP#33: Percentage of Theoretical Range Traveled Between Refuelings

**CDP#33: Percentage of Theoretical Range Traveled Between Refuelings**

## CDP#34: Effective Vehicle Range

**CDP#34: ****Effective Vehicle Range**

## CDP#35: Average Refuelings Between Infrastructure Safety Reports

**CDP#35: Average Refuelings Between Infrastructure Safety Reports**

## CDP#36: Type of Infrastructure Safety Report By Quarter

**CDP#36: Type of Infrastructure Safety Report By Quarter**

## CDP#37: Primary Factors of Infrastructure Safety Reports

**CDP#37: Primary Factors of Infrastructure Safety Reports**

## CDP#38: Refueling Times

**CDP#38: ****Refueling Times**

## CDP#39: Refueling Amounts

**CDP#39: Refueling Amounts**

## CDP#40: H2 Tank Level at Refueling

**CDP#40: H2 Tank Level at Refueling**

## CDP#41: Refueling Tank Levels - Medians

**CDP#41: Refueling Tank Levels - Medians**

## CDP#42: Refueling by Time of Day

**CDP#42: Refueling by Time of Day**

## CDP#43: Refueling by Day of Week

**CDP#43: Refueling by Day of Week**

## CDP#44: Driving Start Time – Day

**CDP#44: Driving Start Time – Day**

## CDP#45: Driving by Day of Week

**CDP#45: Driving by Day of Week**

## CDP#46: Fuel Cell System Operating Powers

**CDP#46: Fuel Cell System Operating Powers**

## CDP#47: Trip Length

**CDP#47: Trip Length**

## CDP#48: Primary Factors Affecting Learning Demo Fleet Fuel Cell Degradation

| ~29% Decay rate variance explained by a combination of the data variables below1 | Correlation to 
Decay Rate Data |
| --- | --- |
|    Starts per hour (+) | High decay rate2 |
|    Power levels (high & average) (+) |  |
|    Trip length (-) |  |
|    Time between trips (+) |  |
| ~10% Decay rate variance explained by a combination of the data variables below1 | Correlation to 
Decay Rate Data |
|    Idle time (+) | High decay rate2 |
|    Power levels (low) (+) |  |

- 1. Findings based on a Learning Demonstration Fleet, Partial Least Squares (PLS) regression model.  Approximately 39% decay rate variance explained by the model.
- 2. As part of the variable combination, a (+) indicates a directional relation to high decay rate and a (-) indicates an inverse relation.

- Created: Aug-31-07 9:00 AM

## CDP#49: Primary Factors Affecting Learning Demo Team Fuel Cell Degradation

## CDP#50: Refueling by Time of Night

**CDP#50: Refueling by Time of Night**

## CDP#51: Driving Start Time – Night

**CDP#51: Driving Start Time – Night**