TITLE

Performance Evaluation of Indoor Environment Parameters for an Unoccupied Operating Room

AUTHOR(S)
Fu-Jen Wang; Chi-Ming Lai; Tsung-Jung Cheng; Zhuan-Yu Liu
PUB. DATE
May 2011
SOURCE
ASHRAE Transactions;2011, Vol. 117 Issue 1, p557
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The HVAC systems for operating rooms are energy-intensive and sophisticated in that they operate 24 hours per day year-round and use large amount of fresh air to deal with infectious problems and to dilute microorganisms. However, little quantitative information has been investigated about trade-off between energy-efficient HVAC system and indoor environment quality especially when the operating room is not occupied. The objective of this study is to present the field measurement approach on performance evaluation of the HVAC system for an unoccupied operating room. Variable air volume terminal boxes were conducted to verify the compromise of energy-saving potential and indoor environment parameters including particle counts, microbial counts, pressurization, temperature and humidity. Field measurements of a full-scale operating room have been carried out at a district hospital in Taiwan. Numerical simulation has been applied to evaluate the air flow distribution and concentration contours while conducting the velocity reduction approach in the unoccupied operating room. The results reveal that it is feasible to achieve satisfactory indoor environment by reducing the supply air volume (or velocity) in the unoccupied operating room. Optimal face velocity of HEPA filter and percentage of damper opening for the variable air volume terminal boxes could be obtained through compromising of indoor environment quality control and energy consumption as well. It will stimulate a more robust investigation of infection-controlled, energy-efficient and environment-comfortable HVAC system specific for unoccupied operating rooms.
ACCESSION #
67359356

 

Related Articles

  • Demand Control Ventilation: Lessons from the Field- How to Avoid Common Problems. Acker, Brad; Van Den Wymelenberg, Kevin // ASHRAE Transactions;2011, Vol. 117 Issue 1, p502 

    Demand control ventilation (DCV) has the potential to save energy by reducing ventilation rates in accordance with occupancy levels provided by the surrogate indication of CO2 levels. However, improperly installed, designed, or operated systems may save energy at the expense of Indoor Air...

  • Effects of HVAC Operations on Sorptive Interactions. Guerrero, Priscilla A.; Corsi, Richard L. // ASHRAE Transactions;2011, Vol. 117 Issue 1, p419 

    Decreasing building energy demands will necessitate changes in HVAC design and operation. Such changes may have a wide spectrum of effects on indoor air quality. Human exposure to a wide range of air pollutants, particularly toxic contaminants, is dominated by what is breathed indoors. Two...

  • Application Issues for Chilled Beam Technologies. Setty, Boggarm S. // ASHRAE Transactions;2011, Vol. 117 Issue 1, p494 

    Recently, many discussions and papers relating to chilled beams have been published. Chilled beams usage has become rampant along with Dedicated Outside Air Systems (DOAS). The paper discusses the design issues relating to filtration, induction effect, certification and energy consumption. In...

  • Indoor Environmental Quality Analysis for Optimizing Energy Consumptions Varying Air Ventilation Rates. Mancini, Francesco; Nardecchia, Fabio; Groppi, Daniele; Ruperto, Francesco; Romeo, Carlo // Sustainability (2071-1050);Jan2020, Vol. 12 Issue 2, p482 

    The energy refurbishment of the existing building heritage is one of the pillars of Italian energy policy. Aiming for energy efficiency and energy saving in end uses, there are wide and diversified improvement strategies, which include interventions on the building envelope and Heating,...

  • Industry Battles Indoor Air Pollution. Woerpel, Herb // Air Conditioning, Heating & Refrigeration News;7/16/2012, Vol. 246 Issue 11, p1 

    The article reports on the solutions made by the heating, ventilation, air-conditioning and refrigeration (HVACR) manufacturers in managing indoor air quality (IAQ) issues.

  • humidity helps contractors.  // Air Conditioning, Heating & Refrigeration News;8/9/2010, Vol. 240 Issue 15, p12 

    The article presents an overview of how indoor air-quality (IAQ) products help heating and ventilation industry (HVAC) contractors expand their businesses.

  • iaq boosts the bottom line.  // Air Conditioning Heating & Refrigeration News;2/27/2012, Vol. 245 Issue 9, p1 

    An introduction is presented in which the editor discusses the importance of indoor air quality (IAQ) for heating, ventilation, and air conditioning (HVAC) contractors to improve comfort and health of homeowners.

  • outlook hvacr perspective.  // Air Conditioning Heating & Refrigeration News;2/27/2012, Vol. 245 Issue 9, p3 

    The author discusses the significance of offering indoor air quality (IAQ) from heating, ventilation, and air conditioning (HVAC) contractors to improve comfort and health of homeowners.

  • Texas Contractors Promote Health in Home. Conrad, John // Air Conditioning Heating & Refrigeration News;2/27/2012, Vol. 245 Issue 9, p16 

    The article reports on the initiative of heating, ventilation, and air conditioning (HVAC) contractors in Texas to promote health in home with indoor air quality.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics