Kaset Tipi Klimalarda Termostat Yerleşiminin Ortam İçerisindeki Hız, Sıcaklık ve Partikül Dağılımına Olan Etkisinin Sayısal Araştırılması

Klima ile konfor ortamı oluşturulan mahallerde minimum seviyede sıcaklık farklılıklarıoluşması sağlanmalıdır. Kullanıcının klima kumandası üzerinden set etmişolduğu sıcaklık değerinin hacmin tamamında aynı derecenin oluşması istenmektedir.Bunun yapılabilmesi için klima kumandasının koyulacağı yer büyük bir önemesahiptir. Bu çalışmada, soğutma uygulamalarında yaygın olarak kullanılan kasettipi iç ünitenin kullanılması durumunda termostatın yerleşim yerinin oda içerisindekihız, sıcaklık ve oda içerisindeki solunabilir partikül (10 μm) miktarına olan etkisisayısal olarak incelenmiştir. Termostat konumunun etkisini incelemek amacıylayedi farklı noktaya yerleştirildiği kabul edilen cihaz kontrol kumandası, bulunduğupozisyonun sıcaklık değerine bağlı olarak iç ünitenin üfleme sıcaklığı ve üfleme hızıayarlanmaktadır. 2 boyutlu yapılan bu çalışmada PPD değerleri hesaplanmış vekonforsuzluk bölgeleri belirlenmiştir. Bununla birlikte, oda içerisindeki partiküllerinEulerian-Langrangian modeli kullanılarak takibi yapılmış ve termostat yerleşiminpartikül dağılımına olan etkisi araştırılmıştır. Sonuçlar, termostat yerleşimininyalnızca konfor üzerine veya oda içerisindeki sıcaklık dağılımlarını etkilemediğiaynı zamanda enerji tüketimini de önemli ölçüde etkilediğini göstermiştir.

Numerical Investigation of Effects of the Thermostat Position on Velocity, Temperature and Particle Distribution in Cassette Type Air Conditioners

Minimum temperature differences should be provided by air conditioners where comfort conditions are obtained. It is desired that temperature reached to set temperature that adjusted from control panel, in entire control volume. Thus control panel position is crucial to obtain this homogenous temperature distribution. In this study, the effect of thermostat position, which is often used in case of preferring cassette type cooling devices, on room temperature, velocity distributions and respirable particle concentrations was investigated numerically. Blowing temperature and velocity of the cassette type air conditions were adjusted by temperature of the position in where thermostat was placed. In 2D cases PPD were calculated and discomfort zones were determined. Moreover, particles placed in the room randomly, were tracked by Eulerian-Langrangian model and effect of thermostat position were determined. It is found that, thermostat position not only highly influences temperature distribution in a room but also affects concentrations and depositions of particles.

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