Case Study—The Design, Testing, and Commissioning of a Close Temperature Environment
Stefan Sadokierski, Arup
In 2003 the UK National Physical Laboratory (NPL) commissioned Arup to design a new facility to house a clinical linear accelerator on their campus in Teddington, south London. The primary use of the facility is to calibrate secondary radiation sources that are used to treat cancer.
The design of the facility included a number of technical challenges, including a requirement to maintain environmental conditions in the main exposure room at +/- 0.1°C (0.18°F) and +/- 10 percent relative humidity per hour, and to control the concentration of ozone build generated by the accelerator.
The construction of the facility was completed in 2008. With its various systems successfully tested and commissioned, it is now operational.
This presentation focuses on the design of the HVAC system needed to maintain the onerous temperature and humidity stability criteria and ozone levels within the space. The configuration and control of the ventilation system will be discussed in detail, as will the use of computational fluid dynamics as a design tool and the impact that this had on the project. Detailed measurements made during the testing and commissioning of the facility will be presented.
Biography:
Stefan Sadokierski is a mechanical engineer with over nine years of professional experience. He has degrees in mechanical engineering and applied mathematics, and is a chartered engineer and an Accredited Tier Designer with the Uptime Institute.
Currently based in London, he has designed and delivered building services and industrial engineering projects in the United Kingdom, Europe, the Middle East, America, and Australia. He currently leads a team of mechanical engineers focused on data center, mission-critical, and financial-services-based projects.
In addition to design consultancy work, Mr. Sadokierski provides focused consultancy services relating to sustainability and mission-critical systems design for clients around the world.