A physical input-output method to track energy flows from extraction to services

Matthew Heun

Calvin College

EducationDr. Heun graduated from Calvin College, Grand Rapids, MI with a BSE in 1989. He completed is M.S. in Mechanical Engineering in 1990 and finished his Ph.D. in 1995, both at the University of Illinois. During that time, he worked as a research assistant in the Air Conditioning and Refrigeration Center (ACRC) at the University of Illinois. His work at the ACRC focused on the optimization of heat exchangers using ozone-friendly refrigerants.BiographyAfter completing his Ph.D., Dr. Heun worked at NASA’s Jet Propulsion Laboratory (JPL), Pasadena, CA, where he led studies and experiments related to planetary exploration with balloon systems. After working at JPL, Dr. Heun joined Global Aerospace Corporation (GAC), a start-up aerospace R&D company, as its first full-time employee. At GAC, Dr. Heun proposed, led, and completed several projects in support of NASA’s Earth Science activities. Dr. Heun spent his 2009 sabbatical in South Africa at the Centre for Renewable and Sustainable Energy Studies and the Cape Peninsula University of Technology where he taught and participated in sustainable energy development.Academic interestsEnergy conversion chain (ECC) analysisImpact of Energy Return on Investment (EROI) on energy pricesSustainable Development in the Developing World ContextRenewable Energy SystemsLithium-ion battery performance modeling for space applicationsBalloon and lighter-than-air vehicle system design and optimizationBiological analogs for robotic group behaviorPassive trajectory control for stratospheric balloon systemsThermal systems optimizationSurvivable systems for planetary exploration


The focus of much energy analysis in recent decades has been climate change and embodied carbon. However, we do not emit carbon for its own sake; we want the services provided by energy consumption, such as passenger... [ view full abstract ]


  1. Matthew Heun (Calvin College)
  2. Anne Owen (University of Leeds)
  3. Paul Brockway (University of Leeds)

Topic Areas

• Environmentally and socially-extended input-output analysis , • Food, energy, water, and nutrient material flows and footprints , • Advances in methods (e.g., life cycle assessment, social impact assessment, resilience a


WS-8 » Input-Output analysis and the Circular economy (11:30 - Wednesday, 28th June, Room E)

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