Bina Enerji Kullanımının Bir Boyutlu Dinamik Isıl Modellenmesi ve Örneklere Uygulanması

Bu çalışmada, ısı kaybı ve kazancının sadece pencere ve dış duvardan olduğu varsayılan bir odanın ısıl modeli çıkartılmıştır. Paralel bağlı levhalar için bir boyutlu zamana bağlı ısı iletimi dinamik modeli sunulmuş ve denklemler sonlu farklar yöntemi kullanılarak ayrıklaştırılmıştır. Yapılan çözümlerin doğruluğunun ispatı analitik yöntemle elde edilen sürekli rejim sonuçlarıyla tamamlanmıştır. Seçilen çeşitli uygulama problemleri sürekli rejim problemlerinin analitik çözümleri ile karşılaştırılarak ve gittikçe daha karmaşık problemler seçilerek çözülmüştür. Detaylı formülasyon çıkarılmış örneklerle anlatılmıştır. Çalışmanın amacı binaların ısıl enerji TS EN ISO 13790 Standardı'na göre yapılan uygulama çözümlerini kontrol etmek amacıyla kullanılacak basit bir dinamik ısı kaybı modeli geliştirmek ve standardın daha karmaşık uygulamaları için daha esnek bir referans ısıl model geliştirmektir. Bu nedenle kullanıcının daha karmaşık sayısal/ticari kodları doğru kullanıp kullanmadığını sınayabilmesine imkan sağlamak hedeflendiği için sayısal sonuçlar verilmiştir. Bu çalışmada önerilen yöntemlere göre bulunan çözümler bina enerji tüketimi hesapları yapılırken referans olarak alınabilir. Ayrıca, bu çözümleme yöntemi daha esnek bir ısıl model için temel oluşturabilir. Bu çalışmada raporlanan yöntemler kullanıcının daha karmaşık sayısal/ticari kodları doğru kullanıp kullanmadığını sınayabilmesine imkân sağlar.

One-Dimensional Dynamic Thermal Modeling of Building Energy Demand and Application to Examples

In this study, a thermal model of a room is formulated where the heat loss and the gain are assumed to be only from the window and the outer wall. A one-dimensional time-dependent dynamical model of heat transfer for parallel bonded layers is presented and the equations are discretized using the finite difference method. Proof of accuracy of the steady state solution is completed with results obtained by the analytical method. Various practical problems selected by comparison to analytical solutions of steady state and solved the problem by making the increasingly complex. The detailed formulation is described with examples. The aim of this study is to develop a simple dynamic building thermal energy balance and heat loss model that will be used to confirm application solutions made according to the TS EN ISO 13790 Standard. And the aim is also to develop a more flexible reference thermal model for more complex applications of the standard. For this reason numerical results are given as it is aimed to enable the user to check whether he has used more complex numerical / commercial codes correctly. The solutions found according to the methods proposed in this study can be taken as reference when building energy consumption calculations are made. In addition, this analysis method can be the basis for a more flexible thermal model. The methods reported here allow the user to test whether they are using the more complex digital / commercial codes correctly.

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