Doğal Havalandırmanın Kümeslerdeki Psikro­metrik Sonuçlara Etkisi ve Etkinliğini Artırma Olanakları

Year 1988, Volume: 1 Issue: 1, 26 - 41, 01.06.1988

Salim Mutaf

Abstract

Araştırma, tropik günlerde (yüksek sıcaklık ≥ 30°C) kapalı ve açık doğal havalandırmalı kümeslerdeki hava değişiminin psikrometrik sonuçlara olan etkisinin belirlenmesi ve doğal havalandırmanın etkinliğini artırma olanaklarının ortaya konulması amacı ile yapılmıştır.
Doğal hava değişiminin, kümeslerdeki psikrometrik sonuçlarda büyük farklılıklara neden olmadığı gözlenmiştir. Kümeslerde havalandırma ile olan ısı kaybı, gizli ısı şeklinde olmuştur. Bunun sonucu olarakta, kümeslerdeki iç havanın kuru termometre sıcaklıkları, dış havanın kuru termometre sıcaklığından 0.00-1.50 °C daha düşük bulunmuştur.
Kümeslerdeki gerekli yaz havai debisi, iç-dış hava sıcaklıkları arasındaki Fark 1-2 °C olduğunda 4-8 m³.saat^-1.kg^-1. canlı ağırlık olarak hesaplanmıştır. Doğal havalandırmanın etkinliğini artırmak için; mahyada sürekli ve fenerli havalandırma boşluğu sağlanmalı, yan duvarlardaki havalandırma boşlukları, uzun yan duvar alanlarının % 40-50'nin altına düşürülmemeli, etkin hava çıkış boşluğu ile hava giriş boşluğu arasındaki oran en az 1/2 ya da 1/3 olmalıdır.

Keywords

Doğal Havalandırma, Kümes, latent heat

The Effect of Natural Ventilation on Psych­rometrlc In Poultry Houses and Possibility of Increasing Its Efficiency

Abstract

The aim of this study was to investigate the effect of summer-ventilation air exchange on psychrometric results in closed and open type of poultry houses with natural ventilation and possibility of increasing its efficiency.
The results obtained in this study showed that there is no considerable changes in psychrometric peculiarities of poultry houses coused by high tempera¬ture (tâ30°) during the summer mounths. The ventilation heat loses in all houses were related with the latent heat. The latent heat of vaporization was acquired from the air and in relation to this the dry-bulb temperature of inside air was 0.00-1.50°C lower than autside air.
When the temperature difference between inside and outside air was 1- 2°C, the ventilation rate was calculated as 4-8 m.³hr^-1.per kg live weight. The natural ventilation design characteristics and structural dimensions necessary to increase th efficiency of the natural ventilation system in poultry houses are; the ridge should be provided continuous capped ventilation opening, side walls ventilation openings should comprise at least 40-50 % of the lateral walls area, the raito of effective ridge outlet opening to effective inlet opening should be at least 1/2 or 1/3; the ridge height of building should not be less than 5 m.

Keywords

Natural Ventilation, Poultry Houses, latent heat

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