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Comparison of GREEN-MAC-LCCP© based Indirect CO2-eq. Emissions from MACs and Vehicle Measured Data
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2010 by SAE International in United States
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The European f-Gas Directive phases out HFC-134a from Mobile Air Conditioning systems (MACs) in new vehicles by 2017. In the US pending California and USEPA regulations have incentives to phase out HFC-134a earlier than 2017. As a result industry is striving to transform all global markets to a single new refrigerant in order to simplify global marketing. One of the global tools to help evaluate alternatives during this transition is the global LCCP (Life Cycle Climate Performance) and the development of the GREENMAC- LCCP© model. This model has become the global standard to measure the Life Cycle Analysis (LCA) greenhouse emissions of any proposed alternative refrigerant for MACs starting from bench test results and supporting the car manufacturer choice of the best suitable alternative refrigerant from an environmental perspective.
The increasing interest for indirect emissions optimization is affecting not only the new refrigerant selection and also the choice of MACs control in the vehicle. To evaluate system controls, a prototype vehicle equipped with a new MACs, featuring an increased efficiency, must be tested and the results evaluated. This can be done more effectively in a vehicle-level test.
Fiat Group Automobiles [FGA] has developed a life cycle model similar to GREEN-MAC-LCCP© over the last five years. This model uses vehicle tests of fuel consumed by the MACs as the major input for indirect impact. The LCCP results are under continuous review and one of the areas of active debate is how the GREEN-MAC-LCCP© estimated Indirect CO₂-eq. emissions compare with vehicle-based test results. In this paper we provide a detailed analysis and comparison of the Indirect LCCP CO₂-eq emissions obtained by running the GREEN-MAC-LCCP© model with bench test input data and those obtained by running the FGA tool implemented with vehicle test results.
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CitationPapasavva, S., Monforte, R., and Hill, W., "Comparison of GREEN-MAC-LCCP© based Indirect CO2-eq. Emissions from MACs and Vehicle Measured Data," SAE Technical Paper 2010-01-1208, 2010, https://doi.org/10.4271/2010-01-1208.
- Ward's Automotive Data, http://wardsauto.com/
- Papasavva, S., Andersen, S. O., submitted for publication in the Environmental Progress and Sustainable Development, October 2009
- Forster, P., Ramaswamy V., Artaxo P., Berntsen T., Betts R., Fahey D.W., Haywood J., Lean J., Lowe D.C., Myhre G., Nganga J., Prinn R., Raga G., Schulz M. and Van Dorland R., 2007, “Changes in Atmospheric Constituents and in Radiative Forcing. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change[Solomon, S., Qin D., Manning M., Chen Z., Marquis M., Averyt K.B., Tignor M. and Miller H.L. (eds.)]”. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA
- The European Parliament and the Council of the European Union (2006) Directive 2006/40/EC of the European Parliament and the Council of 17 May 2006 relating to emissions from air-conditioning systems in motor vehicles and amending Council Directive 70/156/EEC. Official Journal of the European Union, http://www.alliance-CO2-solutions.org/docs/Directive_200640EC.pdf.
- White House Press Release, “President Obama Announces National Fuel Efficiency Policy”, May 19 2009, available at http://www.whitehouse.gov/the_press_office/President-Obama-Announces-National-Fuel-Efficiency-Policy/
- SAE International, “Risk Assessment Report on HFO-1234yf,” by SAE International, cited in http://www.sae.org/mags/aei/inter/news/5487, 2009.
- Risk Analysis for Alternative Refrigerant in Motor Vehicle Air Conditioning, Neal Blackwell, PhD, US ARMY CERDEC, Bendixen, Lisa ICF Consulting, Birgfeld, Erin US Environmental Protection Agency, Feb., 2005, published in the US Federal Registry
- Safety-Study for a Prototypical Mobile R744 AC System, VDA Alternative Refrigerant Wintermeeting, January 30-31,2002, Saalfelden / Austria, Hussels U. Dr.-Ing., Drewes K. Dr.-Ing., RISA Sicherheitsanalysen GmbH, Germany
- Hill, W. and Papasavva, S., “Life Cycle Analysis Framework; A Comparison of HFC-134a, HFC-134a Enhanced, HFC-152a, R744, R744 Enhanced, and R290 Automotive Refrigerant Systems,” SAE Technical Paper 2005-01-1511, 2005.
- Papasavva, S., Hill, W.R., and Brown, R.O., “GREEN-MAC-LCCP©: A Tool for Assessing Life Cycle Greenhouse Emissions of Alternative Refrigerants,” SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):746-756, 2008.
- SAE International Surface Vehicle Standard, “Life Cycle Analysis to Estimate the CO2-Equivalent Emissions from MAC Operation,” SAE Standard J2766, Rev. Feb. 2009.
- Papasavva, S., Hill, W. R., “GREEN-MAC-LCCP-V3b©: A Tool for Assessing the Life Cycle Energy and Greenhouse Gas Emissions of Alternative Refrigerants, submitted for publication in the International Journal of Refrigeration, September 2009
- SAE International, “SAE Alternate Refrigerant Cooperative Research Project Phase I, March, 2004,” http://www.sae.org/standardsdev/tsb/cooperative/altsummary-ph1.pdf.
- SAE International, “SAE Alternate Refrigerant Cooperative Research Project, November, 2002,” http://www.sae.org/standardsdev/tsb/cooperative/nov-2002-overview.pdf.
- SAE International, “SAE Improved Mobile Air Conditioning Cooperative Research Program Improved HFC-134a Refrigerant Systems,” http://www.sae.org/altrefrigerant/techcenter/imac.ppt.
- SAE International, “Alternative Chemical Refrigerants - CRP 150 Proposed SAE Cooperative Research Program to Address New Alternative Refrigerants,” http://www.sae.org/events/aars/presentations/2006-crp150.pdf.
- Johnson, V. H., “Fuel Used for Vehicle Air Conditioning: A State-by-State Thermal Comfort-Based Approach,” SAE Technical Paper 2002-01-1957, 2002.
- Monforte, R., “MAC System Fuel Consumption in Various Climates Conditions,” Presentation at the SAE International Automotive Alternate Refrigerant Systems Symposium, July, 2007.
- Monforte, R., “A Simplified Model to Predict the MACS LFR as a Function of Temperature and MACS Operation,” Presentation at the SAE International Automotive Alternate Refrigerant Systems Symposium, June, 2008.
- Monforte R., “Assessment of the Environmental Impact of MACS and Investigation of its reduction drivers”, VDA 2008 Winter Meeting - February 13-14th, 2008