HOW IS THE MICROBIOLOGICAL GROWTH REDUCED IN AIR-CONDITIONING SYSTEMS?
Growth of legionella in cooling towers and humidifying sections has been a well known problem for many years. But there are more organisms present in several parts of the airconditioning system. These organisms might not be as lethal as legionella but are well capable of creating nasty smell, food contamination, allergies and other unhealthy effects. In this study the microbiological growth and the prevention of growth on the air-cooling heat exchanger are discussed. Microbiological contamination Cooling of air is realized by transporting airflow through a cooled heat exchanger. Due to humidity in the air and the temperature differences, water will condense on the heat exchanging surface. At the wet surface, pollution and micro-organisms will adhere easily. Depending on the temperature present, several organisms will be able to reproduce rapidly under these circumstances. Air-conditioning systems normally re-circulate air from the air-conditioned room to prevent extreme energy consumpt
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