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Thermodynamics-Based Object-Oriented Environmental Design of an Industrial Air Conditioner

[+] Author Affiliations
Amip Shah, Chandrakant Patel

Hewlett Packard Laboratories, Palo Alto, CA

Wilfredo Lugo

Hewlett Packard Technology Center, Aguadilla, Puerto Rico

Paper No. HT2009-88105, pp. 779-787; 9 pages
  • ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
  • Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4358-1 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME


Continued efforts to reduce the environmental impact of products and services are leading to the increased prevalence of life-cycle assessment (LCA) during the design phase. A key challenge in traditional process-based LCA is the validation of vast life-cycle inventory data, which easily numbers in the tens of thousands of data points. In this paper, we utilize an ‘object-based’ approach from software engineering to manage the large amount of data and combine this approach with simple thermodynamic principles, thus significantly reducing the chance of error in LCA inputs. The approach is demonstrated for the test case of a typical industrial air-conditioning unit. We find that implementation of the object-based approach identifies numerous potential errors in the life-cycle inventory data. Thus, the proposed approach enables the designer to perform a more robust environmental analysis of a given system. This facilitates a better identification and prioritization of opportunities for reducing the environmental footprint across the system life-cycle.

Copyright © 2009 by ASME



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