Selection and Cost Analysis of Climate Control Systems (VRF-CHILLER BOILER FCU): A Hotel Example

Abstract

The impact of the energy consumption of mechanical systems, their associated investment costs, and operating costs on the economy is undeniable. In countries with high energy consumption and harsh climate conditions across the country, such as Turkey, the cost allocated to cooling/heating systems—one of the significant cost items—is a major concern. When selecting systems for solutions, investment and operating costs are the primary criteria. With technological advancements, VRF (Variable Refrigerant Flow) systems, which perform cooling cycles and operate reversibly to provide heating, have replaced steel pipes, boilers, chiller units, and valves. This development has also facilitated the protection of equipment. In this study, a comparison was made between a Boiler-Chiller-Fancoil system and a VRF system in terms of investment, summer-winter operating, and maintenance costs for a 300-room hotel located in the Marmara region. The results indicate that while the VRF system is approximately 16% more disadvantageous in terms of initial investment costs, it is approximately 14% more advantageous in terms of summer-winter operating and maintenance costs, thus amortizing the investment cost within a short period of about one year.

Keywords

• Climate Control
• Boiler-Chiller-Fancoil
• Cost Analysis
• VRF

İklimlendirme Sistemlerinin (VRF-CHILLER KAZAN FCU) Seçimi ve Maliyet Analizi: Otel Örneği

Abstract

Mekanik sistemlerin tükettikleri enerjilerin, sistemlere bağlı yatırım maliyetlerinin ve işletme maliyetlerinin ekonomi üzerindeki etkisi tartışılmazdır. Özellikle Türkiye gibi enerji tüketimi yoğun olan ve iklim koşulları ülke genelinde sert olan ülkelerde yüksek maliyet kalemlerinden biri olan soğutma/ısıtma sistemlerine ayrılan maliyet önemli bir sorun olarak görülmektedir. Çözüme yönelik sistem seçimlerinde yatırım ve işletme maliyetleri öncelikli ölçüt olmaktadır. Teknolojinin gelişmesiyle birlikte çelik boruların, kazanların, chiller gruplarının ve vanaların yerini, paket halinde üretilmiş ve içerisinde soğutma çevrimini gerçekleştirerek ısı alan ve tersinir olarak çalışıp ısı veren VRF (değişken soğutucu akışkan akışı) sistemleri almıştır. Bu gelişme ekipmanları koruma altına almayı da kolaylaştırmıştır. Bu çalışmada Marmara bölgesinde yer alan 300 odalı bir otel esas alınarak, Kazan-Chiller-Fancoil sistemi ile VRF sistemi yatırım, yaz-kış işletme ve bakım maliyetleri ele alınarak kıyaslanmıştır. Sonuç olarak VRF sisteminin ilk yatırım maliyeti açısından yaklaşık olarak %16 daha dezavantajlıyken, yaz-kış işletme ve bakım maliyetleri ele alındığında yaklaşık olarak yıllık %14 daha avantajlıdır ve bu sayede bir yıl gibi kısa bir sürede yatırım maliyetini amorti ettiği hesaplanmıştır.

Keywords

• İklimlendirme
• Kazan-Chiller-Fancoil
• Maliyet Analizi
• VRF

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