Energy conservation techniques for hospital buildings

The aim of the present paper is to review the state of the art technologies for the energy efficiency in the hospitals' sector. Hospitals are responsible for a top-heavy amount of energy demand and joint emissions, due to their 24/7 operation and extra requirements they use larger energy amount than a commercial building. In addition, they need high quality and guaranteed supplies of electricity. Moreover, the high proportion of ageing building stocks makes hospitals among the least energy-efficient buildings. Different energy-saving measures are proposed by various researchers. This study presents the most globally known technologies and techniques on energy-saving methods for hospital and healthcare facilities in order to improve their energy efficiency performance. The methodology followed includes reviewing of the most typical energy characteristics of the sector followed by the description of the main difficulties in applying energy efficiency techniques in hospitals. Finally, case studies based on the global experience are included. The energy system of a hospital organization is usually exceptionally complex and must respect strict regulations, since any changes to the performance have impact on other aspects. In general, a large differentiation of the consumption of hospitals exist from the average, due to various reasons, such as the use (general, psychiatric, health centre, etc.), the constitution year and the status of the building envelope, the insulation level, the climatic zone, the age and level of maintenance of the mechanical equipment, and the level of energy management. As a result different energy-saving measures are proposed. Implementing simple energy conservation techniques can save up to 10 per cent of primary energy consumption. To identify areas of potential savings, high-cost energy categories should be targeted and monitored taking into account an integrated energy management programme.

[1]  Jorge Islas,et al.  Pinch technology application in a hospital , 2003 .

[2]  J. Bujak,et al.  Experimental study of the energy efficiency of an incinerator for medical waste , 2009 .

[3]  Luisa F. Cabeza,et al.  Study of Energy Saving in a Greek Building Using Phase Change Materials , 2010 .

[4]  Gian Luca Morini,et al.  New technologies for an effective energy retrofit of hospitals , 2006 .

[5]  Janusz Bujak,et al.  Heat consumption for preparing domestic hot water in hospitals , 2010 .

[6]  Agis M. Papadopoulos,et al.  Energy efficiency in the Hellenic building sector: An assessment of the restrictions and perspectives of the market , 2010 .

[7]  Weijun Gao,et al.  Optimal option of distributed generation technologies for various commercial buildings , 2009 .

[8]  D. Kolokotsa,et al.  Predictive control techniques for energy and indoor environmental quality management in buildings , 2009 .

[9]  Gian Luca Morini,et al.  Greenhouse gas reduction and primary energy savings via adoption of a fuel cell hybrid plant in a hospital , 2004 .

[10]  Constantinos A. Balaras,et al.  Energy performance and energy conservation in health care buildings in hellas , 1994 .

[11]  Maria Loizidou,et al.  On the energy consumption and indoor air quality in office and hospital buildings in Athens, Hellas , 1994 .

[12]  Theocharis Tsoutsos,et al.  Design of a solar absorption cooling system in a Greek hospital , 2010 .

[13]  Evangelos Grigoroudis,et al.  Towards a multi-objective optimization approach for improving energy efficiency in buildings , 2008 .

[14]  Constantinos A. Balaras,et al.  Indoor environmental quality in Hellenic hospital operating rooms , 2009 .

[15]  Constantinos A. Balaras,et al.  HVAC and indoor thermal conditions in hospital operating rooms , 2007 .

[16]  Luis M. Serra,et al.  Optimal synthesis of trigeneration systems subject to environmental constraints , 2011 .

[17]  Hans Hoes,et al.  An aquifer thermal storage system in a Belgian hospital: Long-term experimental evaluation of energy , 2011 .

[18]  Alojz Poredoš,et al.  Economics of a trigeneration system in a hospital , 2006 .

[19]  Essam E. Khalil.  Tips on Design of Energy Efficient Hospitals Air Conditioning Systems , 2010 .

[20]  W. H. Ching,et al.  Natural ventilation for reducing airborne infection in hospitals , 2009, Building and Environment.

[21]  Sadiq J. Zarrouk,et al.  Assessment of the geothermal space heating system at Rotorua Hospital, New Zealand , 2012 .

[22]  Alexandre Szklo,et al.  Energy consumption indicators and CHP technical potential in the Brazilian hospital sector , 2004 .

[23]  M. Hasanuzzaman,et al.  An end-use energy analysis in a Malaysian public hospital , 2010 .

[24]  Carlos J. Renedo,et al.  Study of different cogeneration alternatives for a Spanish hospital center , 2006 .

[25]  Sura Al-Maiyah,et al.  Design strategy for low-energy ventilation and cooling of hospitals , 2009 .

[26]  Koji Matsushima,et al.  Indoor Lighting Facilities , 2007 .

[27]  van Awm Jos Schijndel,et al.  Optimal operation of a hospital power plant , 2002 .

[28]  M. Santamouris,et al.  A matrix tool for assessing the performance of intelligent buildings , 2007 .