Energy Efficiency Analysis of Waste Heat Recovery Applied to a Hot Water Boiler in a Public Building

Year 2024, Volume: 25 Issue: 1, 53 - 64

Hacer Akhan , Özgür Özaydın , Samet Özdemir

https://doi.org/10.59314/tujes.1422282

Abstract

As a result of many applications in industrial plants and mechanical systems in public buildings, waste heat is generated, and significant amounts of energy and money can be saved by using this waste heat for different useful purposes in the enterprise before it is discharged into the atmosphere. In this project, the energy efficiency of the hot water boiler used in the heating system of the public building has been investigated. Within the scope of efficiency-enhancing applications, it has been determined at which rates savings will be achieved by utilising waste heat. The exhaust gases leaving the boiler at high temperature can be used in a heat exchanger and the waste heat can be utilised to heat the combustion air or feed water used in the boiler. The chimney of the hot water boiler system examined is proposed as economiser for heat recovery. Savings are achieved by not using fuel equivalent to the recovered energy. The cost analysis was calculated using the payback period method. Annual monetary savings of 29,049.0 USD/year were calculated in the economiser system. If economiser boiler is used in the public building, the payback period of the improvements will be 0.13 years.

Keywords

Energy efficiency in boilers, Energy savings, Waste heat recovery

Ethical Statement

This study was funded by Trakya University Scientific Research Projects Unit (TÜBAP) with Student Scientific Research Support.

Supporting Institution

Trakya University Scientific Research Projects Unit (TÜBAP)

Project Number

TÜBAP-2023/175

Thanks

This study was funded by Trakya University Scientific Research Projects Unit (TÜBAP) with Student Scientific Research Support.

Bir Kamu Binasındaki Sıcak Su Kazanına Uygulanan Atık Isı Geri Kazanımının Enerji Verimliliği Analizi

Abstract

Endüstriyel tesislerde birçok uygulama sonucunda ve kamu binalarında mekanik sistemlerde atık ısı meydana gelir ve bu atık ısının atmosfere atılmadan önce işletmede farklı faydalı amaçlar için kullanılması ile önemli miktarlarda enerji ve para tasarrufu sağlanabilir. Bu projede kamu binasının ısıtma sisteminde kullanılan sıcak su kazanının enerji verimliliği incelemesi yapılmıştır. Verim arttırıcı uygulamalar kapsamında atık ısıdan faydalanarak hangi oranlarda tasarruf sağlanacağı belirlenmiştir. Yüksek sıcaklıkta baca gazlarını bir ısı eşanjöründe kullanılıp atık ısı değerlendirilerek, kazanda kullanılan yakma havasının veya besleme suyunun ısıtılması sağlanabilir. İncelenen sıcak su kazanı sisteminin bacası ısı geri kazanımı yapılacak şekilde, ekonomizerli olarak önerilmektedir. Geri kazanılan enerjinin karşılığı kadar yakıt kullanılmayarak tasarruf sağlanmaktadır. Maliyet analizi geri ödeme süresi yöntemi kullanılarak hesaplanmıştır. Ekonomizerli sistemde yıllık 29.049,0 USD/yıl parasal tasarruf hesaplanmıştır. Eğer incelenen kamu binasında ekonomizerli kazan kullanılırsa, iyileştirmelerin geri ödeme süresi 0,13 yıl olacaktır.

Keywords

Kazanlarda enerji verimliliği, Enerji tasarrufu, Atık ısı geri kazanımı

Ethical Statement

Bu çalışma, Trakya Üniversitesi Bilimsel Araştırma Projeleri Birimi (TÜBAP) tarafından Öğrenci Bilimsel Araştırma Desteği ile finanse edilmiştir.

Supporting Institution

Trakya Üniversitesi Bilimsel Araştırma Projeleri Birimi (TÜBAP)

Project Number

TÜBAP-2023/175

Thanks

Bu çalışma, Trakya Üniversitesi Bilimsel Araştırma Projeleri Birimi (TÜBAP) tarafından Öğrenci Bilimsel Araştırma Desteği ile finanse edilmiştir.

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