Mechanical Engineering / Makina Mühendisliği

Permanent URI for this collectionhttps://hdl.handle.net/11147/4129

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  • Conference Object
    Citation - WoS: 1
    Citation - Scopus: 2
    Analysis and Application of Advanced Control Strategies To a Heating Element Nonlinear Model
    (IOP Publishing Ltd., 2017) Turhan, Cihan; Simani, Silvio; Zajic, Ivan; Gökçen Akkurt, Gülden
    This paper presents the design of different control strategies applied to a heating element nonlinear model. The description of this heating element was obtained exploiting a data-driven and physically meaningful nonlinear continuous-time model, which represents a test-bed used in passive air conditioning for sustainable housing applications. This model has low complexity while achieving high simulation performance. The physical meaningfulness of the model provides an enhanced insight into the performance and functionality of the system. In return, this information can be used during the system simulation and improved model- based and data-driven control designs for tight temperature regulation. The main purpose of this study is thus to give several examples of viable and practical designs of control schemes with application to this heating element model. Moreover, extensive simulations and Monte- Carlo analysis are the tools for assessing experimentally the main features of the proposed control schemes, in the presence of modelling and measurement errors. These developed control methods are also compared in order to evaluate advantages and drawbacks of the considered solutions. Finally, the exploited simulation tools can serve to highlight the potential application of the proposed control strategies to real air conditioning systems.
  • Article
    Citation - WoS: 25
    Citation - Scopus: 25
    Economical Assessment of Different Hvac Systems for an Operating Room: Case Study for Different Turkish Climate Regions
    (Elsevier Ltd., 2011) Özyoğurtçu, Gamze; Mobedi, Moghtada; Özerdem, Barış
    In this study, the annual energy consumptions of four different heating, ventilation and air conditioning (HVAC) systems serving to operation rooms (ORs) located at five different cities (Izmir, Antalya, Istanbul, Ankara and, Erzurum) in Turkey are analyzed. The study is performed for four different HVAC systems: (a) 100% fresh air system (System I), (b) 100% fresh air with half air volume rate at night period (System II), (c) 100% fresh air with half air volume rate at night period and heat recovery unit (System III), (d) 50% fresh air with half air volume rate at night period and with heat recovery and mixing units (System IV). Life cycle cost (LCC) for 20 years life span is calculated for the considered systems. It is found that System IV considerably reduces energy consumption and it is economically proper for the considered cities. The rate of energy consumption and LCC reductions are greater for the cities with extreme climate condition having relatively low specific humidity ratio. Using System IV instead of System I reduces OR energy consumption by 74% for the city of Erzurum which has a cold and dry climate.
  • Report
    İklimlendirme Sanayii İhratçılar Birliği Proje Raporu Proje 19: İklimlendirme Mühendisliğinde Uzman Mühendislik Uygulaması
    (İklimlendirme Sanayii İhratçılar Birliği, 2014) Toksoy, Macit; Aktürk, Cafer; Atmaca, İbrahim; Bulgun, Hakan; Dörtdemir, Ahmet Turhan; Erbay, Berrin; Gacaner, Güniz; Gerçek, Ersin; Kayacan, Akın; Küçüka, Serhan; Şahin, Numan; Taner, Kemal; Tanrıöver, Cevat; Tunç, Tufan; Uğural, Ufuk; Yalçın, Melih
    Bu rapor, İklimlendirme Sanayii İhracatçılar Birliği (İSİB) tarafından düzenlenen 27 Kasım-2 Aralık 2012 tarihlerinde Antalya'da, 15-16 Nisan 2013 tarihlerinde İzmir'de (Çeşme) düzenlenen çalıştaylar sonucunda oluşan 19 Nolu "İklimlendirme mühendisliğinde uzman mühendislik uygulaması" konulu proje kapsamında, proje ekibi tarafından yapılan çalışmaları ve sonuçlarını içermektedir. Projenin amacı, "İklimlendirme sektörü alanları için uzmanlık eğitiminin ve uzmanlık şartlarının belirlenmesi, uzman mühendislik uygulamasının çağdaş uygulamalar (ABD; EU vs.) ışığında gözden geçirilmesi ve MMO için uygulamanın geliştirilmesine yönelik bir yol haritasının belirlenmesi"dir.