► PAPERS

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Abstract: The commissioning of air conditioning equipment ensures that these variables are adjusted, and set, to create an ideal comfort zone. This is a highly specialised process and must be performed by a suitably qualified technician. Indeed, to ensure uniform and easily recognised levels of expertise, it is the author's opinion that technicians should be assigned to one of four formal categories which clearly define their competency level, based on formal training and applied experience. For larger projects, the use of a commissioning manager is highly recommended. For balancing of hydronic (i.e. water) systems, various methods are available to the technician, including compensated, bypass, pre-setting, temperature difference, and index balancing. This last method is unique in that it may also be used for air applications. Furthermore, it is the most cost-effective, due to a minimum amount of system resistance. Prior to commissioning, pre-commissioning check sheets should be used to confirm that the system is ready.

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Abstract: Air diffusion, induction ratio and coanda effect collectively interact to determine the indoor climate. The commissioning of air conditioning equipment ensures that these variables are adjusted, and set, to create an ideal comfort zone. This is a highly specialised process and must be performed by a suitably qualified technician. Indeed, to ensure uniform and easily recognised levels of expertise, it is the author's opinion that technicians should be assigned to one of four formal categories which clearly define their competency level, based on formal training and applied experience. For larger projects, the use of a commissioning manager is highly recommended. A hood factor is a useful working tool when proceeding with an air balance, particularly for diagnosing system leakage. For balancing of hydronic (i.e. water) systems, various methods are available to the technician, including compensated, bypass, pre-setting, temperature difference, and index balancing. This last method is unique in that it may also be used for air applications. Furthermore, it is the most cost-effective, due to a minimum amount of system resistance. Prior to commissioning, pre-commissioning check sheets should be used to confirm that the system is ready.

This paper was presented at the Clima2000 congress (7th Rehva world congress Naples, Italy - September 2001)

Abstract: Air diffusion, induction ratio and coanda effect collectively interact to determine the indoor climate. The commissioning of air conditioning equipment ensures that these variables are adjusted, and set, to create an ideal comfort zone. This is a highly specialised process and must be performed by a suitably qualified technician. Indeed, to ensure uniform and easily recognised levels of expertise, it is the author's opinion that technicians should be assigned to one of four formal categories which clearly define their competency level, based on formal training and applied experience. For larger projects, the use of a commissioning manager is highly recommended. A hood factor is a useful working tool when proceeding with an air balance, particularly for diagnosing system leakage. For balancing of hydronic (i.e. water) systems, various methods are available to the technician, including compensated, bypass, pre-setting, temperature difference, and index balancing. This last method is unique in that it may also be used for air applications. Furthermore, it is the most cost-effective, due to a minimum amount of system resistance. Prior to commissioning, pre-commissioning check sheets should be used to confirm that the system is ready.