Journal of Healthcare Engineering

Journal of Healthcare Engineering / 2015 / Article

Research Article | Open Access

Volume 6 |Article ID 231507 |

Tarald Rohde, Robert Martinez, "Equipment and Energy Usage in a Large Teaching Hospital in Norway", Journal of Healthcare Engineering, vol. 6, Article ID 231507, 16 pages, 2015.

Equipment and Energy Usage in a Large Teaching Hospital in Norway

Received01 Oct 2014
Accepted01 Apr 2015


This article presents a study of how equipment is used in a Norwegian University hospital and suggests ways to reduce hospital energy consumption. Analysis of energy data from Norway’s newest teaching hospital showed that electricity consumption was up to 50 % of the whole-building energy consumption. Much of this is due to the increasing energy intensity of hospital-specific equipment. Measured power and reported usage patterns for equipment in the studied departments show daytime energy intensity of equipment at about 28.5 kBTU/ft2 per year (90 kWh/m2 per year), compared to building code standard value of only 14.9 kBTU/ft2 (47 kWh/m2 per year) for hospitals. This article intends to fill gaps in our understanding of how users and their equipment affect the energy balance in hospitals and suggests ways in which designers and equipment suppliers can help optimize energy performance while maintaining quality in the delivery of health services.


  1. P. J. H. Conti, J. A. Beamon, S. Napolitano, M. A. Schaal, T. Turnure James, and L. Westfall, “International Energy Outlook 2013. International Energy Outlook. US Energy Information Administration, Washington, 2013, 300,” View at: Google Scholar
  2. T. Rohde, R. Martinez, and M. Mysen, “Activity modeling for energy-efficient design of new hospitals,” International Journal of Facility Management, vol. 5, no. 1, pp. 1–16, 2014, View at: Google Scholar
  3. “ASHRAE. Advanced Energy Design for Small Hospitals and Healthcare Facilities. R. a. A.C. E. American Society of Heating, ASHRAE, 2011, 180,” View at: Google Scholar
  4. R. Saidur, M. Hasanuzzaman, T. M. I. Mahila, N. A. Rahmin, and H. A. Mohammed, “Chillers energy consumption, energy savings and emission analysis in an institutional building,” Energy, 2011. View at: Google Scholar
  5. S. A. J. Kwatra and H. Sachs, “Miscellaneous Energy Loads in Buildings,” American Council for Energy Economy, Report number A113, Washington, 2013, 79. View at: Google Scholar
  6. T. Rohde, “Energieffektive måter å oppnå funksjonskrav for sykehus,” SINTEF. Oslo, 2012, View at: Google Scholar
  7. R. Martinez, T. Rohde, K. Kallmyr et al., “Energibruk i sykehus, status over energikrevende funksjonskrav og faktisk forbruk knyttet til bygg og utstyr og muligheter for effektivisering,” Low Energy Hospitals, NRC, 2011, 138, View at: Google Scholar
  8. J. S. Peters, M. Frank, J. Van Clock, and A. Armstrong, “Electronics and Energy Efficiency: A Plug Load Characterization Study,” Research Into Action, Inc. 2010, 254, View at: Google Scholar
  9. B. Singer, Hospital Energy Benchmarking Guidelines. LBNL paper nr. 2738E, Lawrence Berkely National Laboratory. 2009, 28,
  10. K. McKenny, M. Guernsey, R. Ponoum, and J. Rosenfeldt, Commercial Miscellaneous Loads. Energy Consumption Characterization and Savings Potensial in 2008 by Building Type. U. D. o. E., (DOE). Lexington. TIAX LLC., 2010, 224.
  11. T. Rohde, Brukstid for areal i sykehus. Low Energy Hospitals, NRC. SINTEF, Oslo. 2011,
  12. T. A. Nguyen and M. Aiello, “Energy Intelligent Buildings based on User Activity, A Survey,” Energy and Building, vol. 56, pp. 244–257, 2010. View at: Google Scholar
  13. N. Standard, Norsk Standard 3031. Standard Norge, 2011,
  14. GGHC, Green Guide for Healthcare. Version 2.2. 2007,
  15. R. Martinez, N. H. Melby, J. Vårdal, P. Hegnedal-Andersen, and T. T. Harsem, “Stricter specification of the energy performance of healthcare equipment can reduce hospital energy consumption,” in Medical Equipment and Trends in Energy Consumption. 4th European Conference on Healthcare Engineering, Norconsult as and Siemens Healthcare, Paris, 2011. View at: Google Scholar
  16. P. S. Agency, Protocol Energy Efficiency Assessment for Electrical Medical Devices, NHS Purchasing and Supply Agency, CEP08037, 2009,
  17. Betterbricks, Energy Efficient Equipment Purchasing Guidelines for Hospitals. T. C. I. o. t. N. E. E. Alliance, Betterbricks. Version 1, 2010,
  18. COUNCIL TEPAT, Establishing a framework for the setting of ecodesign requirements for energy-related products. DIRECTIVE, 2009/125/EC. E. EU. Official Journal of the European Union EU, Comission : 24, 2009,
  19. T. T. Harsem, Veiledere FOU-prosjekt lavenergi sykehus. Low Energy Hospital Project, NRC, Sandvika, 2014.
  20. R. Martinez, “Balancing Act - Using Hybrid Heat Sources to Avoid Permafrost and Optimize Heat Pump Systems in Cold Climate Hospitals,” in 7th International Cold Climate HVAC Conference, Calgary, Alberta, Canada, Norconsult as, 2012. View at: Google Scholar
  21. GE Healthcare and Medical Device Industry Commit to Reducing Energy Use of Ultrasound Products, GE, 2010,
  22. LEED, Medical and process Equipment Efficiency. U. D. o. Energy, LEED Pilot Credit Library, 2010,

Copyright © 2015 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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