ASHRAE GUIDANCE HOSPITALS AND CLINICS
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ASHRAE’s HVAC Design Manual for Hospitals and Clinics has been revised to give up-to-the-minute advice on the complex heating and ventilation demands of different clinical spaces in the US. Frank Mills reports
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8 Nov 2013 - A1050 Practical Controls for HVAC Systems – London
This course covers the principles of control operation and gives practical insight into how to control heating, ventilation and air-conditioning systems, what equipment to use and how it works. It details control components and reviews system specifi cation using Building and Energy Management Systems (BEMs) More information at
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he second edition of the HVAC Design Manual for Hospitals and Clinics, by CIBSE’s sister society in the US, ASHRAE, explores in
detail issues such as energy effi ciency, sustainability and healthy healing environments for patients, staff and visitors. Building on the fi rst HVAC Design Manual, published in 2003, this edition not only updates technical content, but also includes added focus on topics that are crucial for successful HVAC design in a variety of healthcare settings. The updated manual points out that designers must see the hospital not as one large clean room, but as a complex facility with a range of requirements from ‘sterile’ to ‘clean’, ‘normal’ and ‘dirty’. They need to understand the requirements of each space and their respective engineering solutions so that appropriate, effective and energy- effi cient HVAC designs are applied and over-expensive specifi cations avoided. Here are some of the key issues that the manual addresses.
Infection control The ASHRAE guide sets out the principles for best practice in infection control.
Ventilation has a signifi cant role in reducing the risk of infections, but the fact that the proportion of infections directly attributed to airborne transmissions is relatively low (10-20%, according to the guide) shows that current practice is working well. Some 80-90 per cent of infections are spread by other means, such as touching contaminated surfaces or instruments – a helpful diagram illustrates the various routes. The manual also explains the underlying issues of infection control so that engineers can understand the role of HVAC systems more clearly.
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v2.indd 1 CIBSE Journal August 2013
www.cibsejournal.com
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