FARKLI İKLİM ŞARTLARI İÇİN HAVA BOŞLUKLU OPTİMUM BORU YALITIM KALINLIĞININ BELİRLENMESİNDE YAŞAM DÖNGÜSÜ MALİYET ANALİZİ

Bu çalışma mekanik tesisatta 50 mm ile 1000 mm arasındaki borularda hava boşluğu, yalıtım malzemesi ve her ikisinin kullanıldığı durumlardaki optimum yalıtım kalınlığı, enerji tasarrufu ve geri dönüş süresinin belirlenmesi ile ilgilidir. Bu hesaplama için ısıtma derece günler içerikli yaşam döngüsü maliyet analizi kullanılmıştır. Durum çalışması olarak Afyon ili iklim şartları kullanılmasına rağmen çalışma soğuk, ılıman ve sıcak iklim şartları için de genişletilmiştir. Böylece yalıtım kalınlığı, hava boşluğu, boru çapı ve ısıtma derece gün değerlerine göre karşılaştırmalı değerlendirmeler yapılmıştır. Hava boşluğunun kullanıldığı 50 mm ve 1000 mm’lik borularda optimum yalıtım kalınlığı sırasıyla %81 ve %39 düşmüştür. Ilık iklimlerde hava boşluğunun ve soğuk iklimlerde ise yalıtımın kullanılması tavsiye edilir. Hava boşluklu yalıtım uygulandığında optimum yalıtım kalınlığını düşürmekle birlikte büyük çaplı borularda enerji maliyet tasarrufu artarken küçük çaplı borularda geri dönüş süresi düşmektedir.

Anahtar Kelimeler:

Boru yalıtımı, Hava boşluğu, Yaşam döngüsü maliyet analizi, Optimum yalıtım kalınlığı

LIFE CYCLE COST ANALYSIS IN DETERMINING OPTIMUM PIPE INSULATION THICKNESS WITH AIR GAP FOR DIFFERENT CLIMATE CONDITIONS

This study is about determining air gap, insulation material in pipes between 50 mm and 1000 mm in mechanical installation, and determining optimum insulation thickness, energy saving and payback period in cases where both are being used. For this calculation, life cycle cost analysis containing heating degree day has been used. Even though Afyon province climate conditions have been used as the case study, the study has been expanded for cold, temperate and warm climate conditions. This made it possible to make comparative assessments for insulation thickness, air gap, pipe diameter and heating degree day values. In 50 mm and 1000 mm pipes using air gap, the optimum insulation thickness was reduced by 81% and 39% respectively. It is recommended to use air gap in mild climates and to use insulation in cold climates. When insulation with air gap is applied, optimum insulation thickness is reduced, and in pipes with greater diameter energy cost saving is increased while in pipes with smaller diameter the payback period is reduced.

Keywords:

Pipe insulation, Air gap, Life cycle cost analysis, Optimum insulation thickness,

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