# Presentation: 203845

## DOE Data Center Tools SuiteAssessment Tool Development Electrical Example

- Lawrence Berkeley National Laboratory
- ANCIS
- EYP Mission Critical
- Rumsey Engineers
- Taylor Engineering

## Objective

- General Overview of Worksheet with Electrical Example
- Structure of Worksheet in development of Assessment tools
- Elements of Worksheet
- Data Collection
- Metrics and features
- List of actions

## Where Does Worksheet Fit In?

**Energy Profiling**

**Subsystem Assessment**

**Detailed Engineering Audit**

**Engineering Design**

**Savings Validation (M&V)**

**Retrofit/RCx Implementation **

**Documentation**

## Table of Contents

| Data Center Assessment Protocol Worksheets |  |
| --- | --- |
|  |  |
| Worksheet | Description |
| Inputs | Lists the features and metrics that are needed for each assessment area |
| Data Collection | Use this sheet to plan the data collection procedure for each data item |
| Actions | Lists the potential efficiency actions in each assessment area and the method to determine their applicability based on the inputs |
|  |  |
| Notes: |  |
| 1. This is a draft in development. Some fields are incomplete |  |
| 2. All sheets set to print in landscape format |  |

**Notes:**
Now that I’ve discussed how the PEP tool fits into our tool strategy,  I want to take you through a brief overview of the PEP Tool.

The PEP tool is a tool that takes a plant-wide approach to energy savings and looks at both equipment efficiency and operation practices to identify savings opportunities.  

Users input plant data that includes :
equipment information that describes the plant’s operation and production, 
energy costs and usage from monthly fuel and electric bills as well as energy generation and exportation information.
operation practices information

The PEP Tool uses this data to:
provide plant-wide energy maps for electricity, fuel, & steam to describe the plant’s energy flow and usage.  
identify where energy efficiency opportunities exist 
give the user an idea of the magnitude of the savings associated with these opportunities
compare the plant’s practices to industry recognized best practices

## Inputs - Categories

| Data Center Assessment Inputs: |  |  |
| --- | --- | --- |
| 1. Overall Energy Management |  |  |
| 2. Environmental Conditions |  |  |
| 3. Air Management and Air Handling |  |  |
| 4. Economizer |  |  |
| 5. Central Cooling Plant |  |  |
| 6. IT Equipment Power Chain |  |  |
| 7. Lighting |  |  |
| 8. Other Electrical |  |  |

## Inputs – Electrical Example

| Data Center Assessment Inputs: Features and Metrics |  |  |
| --- | --- | --- |
| 6. IT Equipment Power Chain |  |  |
| What is the Utility input voltage? |   |  |
| What is the UPS redundancy configuration? |   |  |
| What is the power distribution configuration? |   |  |
| What is the UPS load capacity? |   |  |
| What type of the UPS is being used? |   |  |
| What is the UPS input current total harmonic distortion? |   |  |
| What is the UPS input power factor? |   |  |
| Number of transformers downstream the UPS system?  |   |  |
| Number of transformers / PDUs upstream the UPS system? |   |  |
| Number of STSs downstream the UPS system? |   |  |
| What is the anticipated future IT loads? |   |  |
| What is the standby-by power configuration? |   |  |
| Is there co-generation? |   |  |
| Do the servers have an efficiency rating? |   |  |
| Is virtualization used? |   |  |

## Inputs - Metrics – Electrical Example

| Data Center Assessment Inputs: Features and Metrics |  |  |  |  |
| --- | --- | --- | --- | --- |
| 6. IT Equipment Power Chain |  |  |  |  |
| Metrics | Unit | Data Required | Priority | Value |
| 6A: UPS load capacity | kVA/kW | UPS rating | 1 |   |
| 6B: UPS System Efficiency | % | UPS Output kW/UPS Input kW | 1 |   |
| 6C: UPS input current THD | % | UPS THD measure at Input | 1 |   |
| 6D: UPS input power factor | PF | UPS Power Factor measure at Input | 1 |   |
| 6E: Transformer (upstream UPS system)Efficiency | % | XFMR Output kW/XFMR Transformer Input | 1 |   |
| 6F: PDU (with built-in transformer) System Efficiency | % | PDU Output kW/ PDU Input kW | 1 |   |
| 6G: STS efficiency | % | STS Output kW /STS Input kW | 2 |   |
| 6H: IT Peak Power Density (actual) | W/sf | IT Peak Power (actual) /DC Floor Area | 1 |   |
| 6I: IT Peak Power Density (design) | W/sf | IT Peak Power (design) /DC Floor Area | 2 |   |
| 6J: IT Rack Power Density (actual) | kW/rack | IT Peak Power (actual) / rack quantity | 1 |   |
| 6K: IT Rack Power Density (design) | kW/rack | IT Peak Power (design) / rack quantity | 1 |   |

## Data Collection - Categories

| Data Centers: Data Collection Worksheet |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| ID | Data | Unit | Priority | Source
/Method | Measurement
Frequency | Measurement
Equipment | Guidance |
| General |  |  |  |  |  |  |  |
| Annual Energy Use (NOTE: Include central plant energy used by DC, but exclude energy used for any offices, etc. that may be served by central plant) |  |  |  |  |  |  |  |
| CRAC and AHU |  |  |  |  |  |  |  |
| Economizer and Central Cooling |  |  |  |  |  |  |  |
| IT Equipment Power Data |  |  |  |  |  |  |  |
| Lighting Data |  |  |  |  |  |  |  |

## Data Collection – Electrical Example

| Data Centers: Data Collection Worksheet |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| ID | Data | Unit | Prio-
rity | Source
/Method | Measurement
Frequency | Measurement
Equipment | Guidance |
| IT Equipment Power Data |  |  |  |  |  |  |  |
| P1 | IT Equipment Energy Use | kWh |   |   |   |   |   |
| P2 | IT Peak Power: Actual  | kW | 1 |   |   |   | Use P4 or P5 |
| P3 | IT Peak Power: Design | kW | 1 |   |   |   |   |
| P4 | UPS Input | kW | 1 |   |   |   |   |
| P5 | UPS Output | kW | 1 |   |   |   |   |
| P6 | UPS Rating | kVA / 
kW | 1 |   |   |   |   |
| P7 | UPS Input current THD | THD % | 1 |   |   |   |   |
| P8 | UPS Input Power factor | PF | 1 |   |   |   |   |
| P9 | Transformer (upstream UPS) input | kW | 1 |   |   |   |   |
| P10 | Transformer (upstream UPS) output | kW | 1 |   |   |   |   |
| P11 | Transformer rating | kVA | 1 |   |   |   |   |
| P12 | PDU Input | kW | 1 |   |   |   |   |
| P13 | PDU Output | kW | 1 |   |   |   |   |
| P14 | PDU Rating | kVA | 1 |   |   |   |   |

## Actions - Categories

| Data Center Assessment Efficiency Actions: |  |  |
| --- | --- | --- |
| 1. Overall Energy Management |  |  |
| 2. Environmental Conditions |  |  |
| 3. Air Management and Air Handling |  |  |
| 4. Economizer |  |  |
| 5. Central Cooling Plant |  |  |
| 6. IT Equipment Power Chain |  |  |
| 7. Lighting |  |  |
| 8. Maintenance & Testing Management |  |  |

## Actions – Electrical Example

| Data Centers Assessment: Efficiency Actions |  |  |
| --- | --- | --- |
| Actions | Criteria to Determine Applicability of Actions (using metrics and features) | Algorithm to Determine Potential Savings (using metrics and features) |
| 6. IT Equipment Power Chain |  |   |
| Maximize UPS load capacity:- UPS types / topologies (DB Con/DLT Con/Rotary)- Redundant configuration not to exceed (N+1) or 2 N.- Use modular UPS- Shutting down modules when the redundancy level is high enough | Applicability Criteria:             < 30% for N+x configuration            < 40% for N configurationEvaluate / Retrofit UPS topologies for more efficient ones. Y / NShutting down UPS modules. Y / N Modular type UPS system. Y / N |                                                                                                                                                                                                                                                            based on typical UPS types - Rotary, Delta Conversion, Double Conversion, and Flywheel types. (see UPS efficiency Tab)Overall Energy Effectiveness is high. |
| Consider high efficient UPS types / topologies. | Use high efficient UPS types / topologies. Y/N  | Y: Will increase UPS efficiency by 5-15%.N: 0%New UPS topologies offer high efficiency  at load capacity below 40%.Overall Energy Effectiveness is high.  |
| Consider UPS without input filters. | Are input filters installed. Y/N  | Y: Removal will increase UPS efficiency by 1 to 2%.N: 0%New UPS topologies offer high efficiency  at load capacity below 40%.Overall Energy Effectiveness is low / medium  |

## We need your input!

*Purpose of today’s workshop:*
- Assessment tools
- Refine the list of metrics and features
- Refine the list of actions
- Identify data collection challenges and opportunities

## Thank You!

*See you at the Electrical Breakout Workshop Session. *