Investigation of a Novel Approach in Free Cooling Degree Hour Calcula-tions for Muğla Province

Yıl 2024, Cilt: 10 Sayı: 2, 352 - 366, 31.12.2024

Hüseyin Salih Aktay , Mustafa Ertürk

https://doi.org/10.29132/ijpas.1474617

Öz

In order to reduce cooling energy without compromising comfort conditions, insula-tion applications on external walls, columns, and beams, as well as the use of double glazing in windows, play a significant role. Another effective method in reducing cooling energy is the implementation of free cooling systems. In this system, cooling systems achieve energy savings by bypassing the fresh air taken from outside directly into the indoor space without passing through cooling coils. The implementation of this system requires the examination of reliable outdoor air temperature distributions throughout the cooling season during the project planning phase. In this study, various analyses were conducted using five different computer programs. According to the analysis results, the operation times of free cooling systems and the Free Cooling Degree Hour Value (FCDHV) to meet cooling loads were determined for every hour of each month for the province of Muğla. The estimated highest seasonal FCDHV for Muğla was found to be 11810.7, with the highest hourly FCDHV being 177.5 occur-ring between 05:30-06:30, and the highest 24-hour FCDHV being 2209 in September. When these data were converted to percentage values, it was determined that a 70.6% energy savings were achieved from free cooling systems.

Anahtar Kelimeler

Muğla, outside temperature, free cooling degree hour, free cooling times, cooling degree hour

Muğla İli Serbest Soğutma Derece Saati Hesaplamalarında Yeni Bir Yaklaşımın İncelenmesi

Öz

Binalardaki enerji talebi genellikle kış mevsimi boyunca odaların ısıtılması yaz mevsimi boyunca ise odaların soğutulması için kullanılmaktadır. Konfor koşullarını etkilemeden soğutma enerjisinin azaltılması amacıyla, dış duvarlar, kolonlar ve kirişlerde yalıtım uygulamaları ile pencerelerde çift cam kullanımı önemli bir rol oynamaktadır. Soğutma enerjisinin azaltılmasında etkili bir diğer yöntem de serbest soğutma sistemleridir. Bu sistemde, soğutma sistemleri dışarıdan alınan taze havayı soğutma bataryalarına bypass ederek doğrudan iç mekana ileterek enerji tasarrufu sağlamaktadır. Bu sistem, projenin planlama aşamasında soğutma sezonu boyunca güvenilir dış hava sıcaklık dağılımlarının incelenmesini gerektirmektedir. Bu çalışmada, beş farklı bilgisayar programı kullanılarak çeşitli analizler yapılmıştır. Analiz sonuçlarına göre, Muğla ili için her ayın her saatinde ve belirli saat aralıklarında serbest soğutma sistemlerinin çalışma süreleri ve soğutma yüklerini karşılayacak Serbest Soğutma Derece Saat Değeri (SSDSD) literatüre kazan-dırılmıştır. Muğla ili için tahmin edilen en yüksek sezonluk SSDSD'nin 11810.7 olduğu, saatlik en yüksek SSDSD'nin 177.5 olduğu ve saat 05.30-06.30 arasında gerçekleştiği, en yüksek 24 saatlik SSDSD'nin eylül ayında ve 2209 olarak belir-lenmiştir. Elde edilen bu veriler yüzdelik hesaba vurulunca, serbest soğutma sistem-lerinden %70.6 oranında bir enerji tasarrufu sağlandığı tespit edilmiştir.

Anahtar Kelimeler

Muğla, dış hava sıcaklığı, serbest soğutma derece saat, serbest soğutma süreleri, soğutma derece saat

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