An approach to identify the optimal solutions in the context of energy and cost criteria for buildings in different climates

�enel Solmaz, Asl�han

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An approach to identify the optimal solutions in the context of energy and cost criteria for buildings in different climates [Megaron]

Megaron. 2016; 11(4): 592-606 | DOI: 10.5505/megaron.2016.09609

An approach to identify the optimal solutions in the context of energy and cost criteria for buildings in different climates

Asl�han �enel Solmaz
Department of Architecture, Dokuz Eylul University, Izmir, Turkey

Buildings are the major energy consumers with a significant effect on energy efficiency improvements around the world. Ensuring energy efficiency in new and existing buildings is gaining momentum with recent initiatives that aim to increase social awareness. Today, there is a wide range of energy efficiency options from design solutions to energy efficient building materials, advanced HVAC systems, and renewable energy technologies. However the identification of optimal and/or most effective set of energy saving solutions within a large decision space for a specific building requires decision-support approaches.

In this study, a simulation based multi-objective optimization approach based on the combination of EnergyPlus building performance simulation and GenOpt optimization program is employed to optimize building heating and cooling energy savings, and the cost criterion, Net Present Value (NPV) simultaneously while identifying the optimal set of energy saving solutions. The approach was applied to a hypothetical office building in different climate zones of Turkey (Izmir and Ankara) to demonstrate its applicability. Building envelope components on each fa�ade were selected as decision variables, and an extensive solution space including alternative materials for the external walls, roof, ground floor insulation, different window types and shading system were generated for each decision variable. The results showed that the interaction between the conflicting objectives and the trade-offs should be explored while determining the most suitable building solutions with energy and cost effective manner.

Keywords: simulation based optimization, building performance simulations, building performance optimization, building energy modeling, building energy performance

Farkl� iklim b�lgelerindeki binalarda enerji ve maliyet kriterleri ba�lam�nda optimal ��z�mlerin belirlenmesine y�nelik bir yakla��m

Asl�han �enel Solmaz
Dokuz Eyl�l �niversitesi Mimarl�k Fak�ltesi, Mimarlik B�l�m�, Yap� Bilgisi Ana Bilim Dal�, �zmir

Birincil enerji t�keticilerinden olan binalar d�nya genelinde enerji etkin iyile�tirmeler konusunda olduk�a �nemli bir etkiye sahiptir. Yeni ve mevcut binalar�n enerji etkinli�inin sa�lanmas�, sosyal fark�ndal�� art�rmay� ama�layan son giri�imlerle birlikte gittik�e ivme kazanmaktad�r. Bug�n binalar i�in, tasar�m ��z�mlerinden enerji etkin yap� malzemelerine, ileri �s�tma-so�utma ve havaland�rma sistemlerinden, yenilenebilir enerji teknolojilerine kadar �ok say�da ve �e�itlilikte enerji etkin uygulama se�ene�i bulunmaktad�r. Buna kar��n, bu geni�likteki bir ��z�m k�mesi i�erisinde, tan�ml� bir bina i�in, optimal ve/veya en etkin enerji tasarruf ��z�mlerinin tan�mlanabilmesi karar deste�i sa�layacak yakla��mlar� gerektirmektedir.

Bu �al��mada, EnergyPlus bina performans sim�lasyonu ve GenOpt optimizasyon program�n�n entegrasyonuna dayanan sim�lasyon tabanl� �ok ama�l� optimizasyon yakla��m�, binan�n �s�tma ve so�utma enerjisi tasarruflar�n� ve maliyet kriteri olan Net Bug�nk� De�er (NBD)�i e� zamanl� optimize etmek ve optimal enerji tasarruf ��z�mlerini tan�mlamak i�in kullan�lmaktad�r. Bu yakla��m, T�rkiye�nin farkl� iklim b�lgelerinde (�zmir ve Ankara) bulunan hipotetik bir ofis binas�na uygulanarak pratikte uygulanabilirli�inin g�sterilmesi ama�lanm��t�r. Binan�n her bir cephesindeki kabuk bile�enleri karar de�i�kenleri olarak se�ilmi� ve her bir karar de�i�keni i�in d�� duvar, �at�, zemin d��emesi i�in alternatif yal�t�m malzemelerini, farkl� pencere t�rlerini ve g�lgeleme sistemini i�eren geni� �apl� bir ��z�m k�mesi geli�tirilmi�tir. Elde edilen sonu�lar, enerji ve maliyet etkin bir bak�� a��s�yla en uygun bina ��z�mlerinin belirlenmesi s�recinde �at��an ama� kriterler aras�nda meydana gelen etkile�imlerin ve �d�nle�imlerin bilinmesi gerekti�ini ortaya koymaktad�r.

Anahtar Kelimeler: sim�lasyon tabanl� optimizasyon, bina performans sim�lasyonlar�, bina performans optimizasyonu, bina enerji modellemesi, bina enerji performans�

Asl�han �enel Solmaz. An approach to identify the optimal solutions in the context of energy and cost criteria for buildings in different climates. Megaron. 2016; 11(4): 592-606

Corresponding Author: Asl�han �enel Solmaz, T�rkiye

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