1 / 6

Direct vs. Indirect Emissions

Direct vs. Indirect Emissions. Estimated CO 2 equivalent emissions from an average supermarket Direct = refrigerant emissions Indirect = energy consumption. Direct Emissions. Direct GHG impacts will be assessed offline based on estimated annual refrigerant losses & GWP-weighting

orpah
Download Presentation

Direct vs. Indirect Emissions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Direct vs. Indirect Emissions • Estimated CO2 equivalent emissions from an average supermarket • Direct = refrigerant emissions • Indirect = energy consumption

  2. Direct Emissions • Direct GHG impacts will be assessed offline based on estimated annual refrigerant losses & GWP-weighting • Charge Size x Emissions Rate = Total Ref Loss • Results will be integrated to provide a “common denominator” (in MTCO2E) to compare different systems equitably • Direct emission results will be layered over results from DOE 2.2R and EnergyPlus (i.e., indirect)

  3. Preliminary Assumptions for Estimating Direct Emissions • Charge size assumptions based on available literature; may be revised upon review of data from Savings by Design. • Additional stakeholder data on charge size is encouraged. 3

  4. Leak Reduction Measures • Mandatory leak reduction measures will be proposed to minimize direct GHG impacts, not to enhance energy efficiency per se • No direct correlation between leakage & efficiency in large refrigeration systems, but minimizing leakage of high-GWP refrigerants is necessary for environmental health • Measures will reflect basic good practices/standard industry practices

  5. Leak Reduction Measures • Focused on design & installation • Developed based on: • ANSI/ASHRAE standard 147-2002 • ANSI/ASHRAE 15-2007 • ANSI/IIAR 2-2008 • GreenChill Best Practices • 2009 International Mechanical Code (IMC) • Institute of Refrigeration. January 2009. Designing out leaks: design standards and practices • Institute of Refrigeration. December 2007. Code of Practice for Refrigerant Leak Tightness in Compliance with F-Gas Regulation • Industry input 5

  6. Leak Reduction Measures • Requesting stakeholder input on: • Appropriateness/feasibility of draft measures • Cost effectiveness • Other measures to consider?

More Related