Unit-Based Optimization Approaches for the Thermal Design of Residential Buildings

Year 2024, , 339 - 350, 01.11.2024

Sadık Yıgıt , Semih Caglayan

https://doi.org/10.47480/isibted.1416709

Abstract

Building regulations, scarcity of energy, and climate change have forced designers to find energy-efficient design alternatives for the buildings. Current regulations focus solely on the total energy requirement of the building without considering the fact that the energy performance varies greatly across different units of the building, which, in turn, causes discomfort among the occupants. Conventional optimization approaches created based on these regulations, therefore, miss the capability to cope with this issue. Resolving the problem of varying thermal performance within the units requires the introduction of unit-based optimization approaches. This study elaborates on revealing the inadequacy of the conventional optimization approach and proposes two alternative approaches that take the issue into account. Within this context, the thermal design a typical five-story residential building with six apartment units on each floor was optimized according to the conventional optimization approach. A simulation-based optimization system consisting of a Distributed Evolutionary Algorithms in Python (DEAP) optimization tool and Energy Plus was employed. The differences in the energy performances of different units were observed for three different climate conditions. Afterwards, two different approaches having the objectives of optimizing the overall building performance and balancing the variance within units were proposed: (i) single-phase multi-objective optimization and (ii) multi-phase single-objective optimization. The outcomes of the study demonstrated that the multi-phase single-objective optimization provided better results.

Keywords

Unit-Based Optimization, Thermal Performance, Genetic Algorithm, Energy Efficiency, Climate Change.

Konut Binalarının Termal Tasarımı için Birim Tabanlı Optimizasyon Yaklaşımları

Abstract

Yapı yönetmelikleri, kısıtlı enerji kaynakları ve iklim değişikliği, tasarımcıları binalar için enerji verimli tasarım alternatifleri bulmaya zorlamaktadır. Mevcut yönetmelikler, binanın toplam enerji ihtiyacına odaklanmakta olup, binanın farklı birimlerinde enerji performansının büyük ölçüde değişebileceği gerçeğini dikkate almamaktadır. Bu durum da bina sakinleri arasında rahatsızlık yaratmaktadır. Yönetmeliklere dayalı olarak oluşturulan geleneksel optimizasyon yaklaşımları, bu sorunla başa çıkmakta yetersiz kalmaktadır. Birimler arası değişen termal performans sorununu çözmek, birim tabanlı optimizasyon yaklaşımlarının kullanılmasını gerektirir. Bu çalışma, geleneksel optimizasyon yaklaşımının yetersizliğini ortaya koymakta ve bu sorunu dikkate alan iki alternatif yaklaşım önermektedir. Bu bağlamda, her katında altı daire bulunan tipik bir beş katlı konut binasının termal tasarımı, geleneksel optimizasyon yaklaşımına göre optimize edilmiştir. Bir optimizasyon aracı olan Distributed Evolutionary Algorithms in Python (DEAP) ve Energy Plus'tan oluşan bir simülasyon tabanlı optimizasyon sistemi kullanılmıştır. Farklı birimlerin enerji performansındaki değişimler üç ayrı iklim bölgesi için gözlemlenmiştir. Sonrasında, genel bina performansını optimize etmeyi ve birimler arasındaki varyansı dengelemeyi amaçlayan iki farklı yaklaşım önerilmiştir: (i) tek aşamalı çoklu amaçlı optimizasyon ve (ii) çoklu aşamalı tek amaçlı optimizasyon. Çalışmanın sonuçları, çoklu aşamalı tek amaçlı optimizasyonun daha iyi sonuçlar verdiğini göstermi.

Keywords

Birim Tabanlı Optimizasyon, Termal Performans, Genetik Algoritma, Enerji Verimliliği, İklim Değişikliği

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