Turhan, Cihan

Profile Picture
Profile URL
https://hdl.handle.net/20.500.14411/6960
Name Variants
Cihan, Turhan
T.,Cihan
Turhan, Cihan
C., Turhan
T., Cihan
Turhan, C.
C.,Turhan
Turhan,C.
Turhan C.
Job Title
Doçent Doktor
Email Address
cihan.turhan@atilim.edu.tr
Main Affiliation
Energy Systems Engineering
Status
Website
ORCID ID
Scopus Author ID
56011415300
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
ABD-1880-2021

Sustainable Development Goals

NO POVERTY1
NO POVERTY
0
Research Products
ZERO HUNGER2
ZERO HUNGER
0
Research Products
GOOD HEALTH AND WELL-BEING3
GOOD HEALTH AND WELL-BEING
1
Research Products
QUALITY EDUCATION4
QUALITY EDUCATION
5
Research Products
GENDER EQUALITY5
GENDER EQUALITY
3
Research Products
CLEAN WATER AND SANITATION6
CLEAN WATER AND SANITATION
0
Research Products
AFFORDABLE AND CLEAN ENERGY7
AFFORDABLE AND CLEAN ENERGY
11
Research Products
DECENT WORK AND ECONOMIC GROWTH8
DECENT WORK AND ECONOMIC GROWTH
1
Research Products
INDUSTRY, INNOVATION AND INFRASTRUCTURE9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
1
Research Products
REDUCED INEQUALITIES10
REDUCED INEQUALITIES
1
Research Products
SUSTAINABLE CITIES AND COMMUNITIES11
SUSTAINABLE CITIES AND COMMUNITIES
15
Research Products
RESPONSIBLE CONSUMPTION AND PRODUCTION12
RESPONSIBLE CONSUMPTION AND PRODUCTION
4
Research Products
CLIMATE ACTION13
CLIMATE ACTION
1
Research Products
LIFE BELOW WATER14
LIFE BELOW WATER
0
Research Products
LIFE ON LAND15
LIFE ON LAND
0
Research Products
PEACE, JUSTICE AND STRONG INSTITUTIONS16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
PARTNERSHIPS FOR THE GOALS17
PARTNERSHIPS FOR THE GOALS
0
Research Products
Documents

47

Citations

758

h-index

15

Go to Scopus profile
Documents

42

Citations

661

Go to WoS profile
Scholarly Output

49

Articles

33

Views / Downloads

104/154

Supervised MSc Theses

7

Supervised PhD Theses

0

WoS Citation Count

503

Scopus Citation Count

583

Patents

0

Projects

0

WoS Citations per Publication

10.27

Scopus Citations per Publication

11.90

Open Access Source

20

Supervised Theses

7

JournalCount
Buildings4
Energy and Buildings4
Sustainability2
Journal of Building Engineering2
Mugla Journal of Science and Technology2
Current Page: 1 / 7

Scopus Quartile Distribution

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Scholarly Output Search Results

Now showing 1 - 10 of 49
  • Thumbnail Image
    Article
    Citation - WoS: 6
    Citation - Scopus: 9
    Enhancing Urban Sustainability With Novel Vertical-Axis Wind Turbines: a Study on Residential Buildings in Çeşme
    (Mdpi, 2025) Saleh, Yousif Abed Saleh; Durak, Murat; Turhan, Cihan
    This study investigates the integration of three types of vertical-axis wind turbines (VAWTs)-helical, IceWind, and a combined design-on residential buildings in & Ccedil;e & scedil;me, T & uuml;rkiye, a region with an average wind speed of 7 m/s. The research explores the potential of small-scale wind turbines in urban areas, providing sustainable solutions for renewable energy generation and reducing reliance on conventional energy sources. The turbines were designed and analyzed using SolidWorks and ANSYS Fluent, achieving power outputs of 350 W for the helical turbine, 430 W for the IceWind turbine, and 590 W for the combined turbine. A total of 42 turbines were mounted on a five-storey residential building model, and DesignBuilder software was utilized to simulate and evaluate the energy consumption. The baseline energy consumption of 172 kWh/m2 annually was reduced by 18.45%, 22.93%, and 30.88% for the helical, IceWind, and combined turbines, respectively. Furthermore, the economic analysis showed payback periods of 12.89 years for the helical turbine, 10.60 years for the IceWind turbine, and 10.49 years for the combined turbine. These findings emphasize the viability of integrating VAWTs into urban buildings as an effective strategy for reducing energy consumption, lowering costs, and enhancing energy efficiency.
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    Article
    Citation - WoS: 2
    Citation - Scopus: 2
    Modelling the Positive and Negative Interaction Between Mood and Thermal Sensation in the Built Environment Using a Combined Markov Chain Monte Carlo Algorithm and Morris Method
    (Sage Publications Ltd, 2025) Ozbey, Mehmet Furkan; Turhan, Cihan
    Mood states, categorized into subscales such as Tension (TEN), Anger (ANG), Fatigue (FAT), Vigour (VIG), Confusion (CON), and Depression (DEP), affect occupants' perceptions of thermal environments. This study investigates the influence of these subscales on thermal sensation, exploring both positive and negative effects. Experiments were conducted in a temperate climate zone over an extended period, including both heating and cooling seasons, with 1159 volunteers. The Morris Method was used to assess the impact of psychological parameters (TEN, ANG, FAT, VIG, CON, DEP) on thermal sensation. Markov Chain Monte Carlo (MCMC) simulations, performed via Python code developed by the authors, evaluated the positive and negative impacts of these subscales across 30,000 simulations. Results showed that VIG was the most influential parameter, while CON and FAT had negative effects (feeling cooler) on thermal sensation. These findings emphasize the complex relationship between psychological factors and thermal perception, underlining the importance of mood states in designing environments that enhance thermal comfort. The study offers valuable insights into the interplay of emotional well-being and physiological responses, contributing to environmental psychology and climate-responsive design.
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    Conference Object
    Citation - WoS: 3
    Citation - Scopus: 3
    Design and Validation of a Fault Tolerant Fuzzy Control for a Wind Park High-Fidelity Simulator
    (Ieee, 2021) Simani, Silvio; Turhan, Cihan; Farsoni, Saverio
    To enhance both the safety and the efficiency of offshore wind park systems, faults must be accommodated in their earlier occurrence, in order to avoid costly unplanned maintenance. Therefore, this paper aims at implementing a fault tolerant control strategy by means of a data-driven approach relying on fuzzy logic. In particular, fuzzy modelling is considered here as it enables to approximate unknown nonlinear relations, while managing uncertain measurements and disturbance. On the other hand, the model of the fuzzy controller is directly estimated from the input-output signals acquired from the wind farm system, with fault tolerant capabilities. In general, the use of purely nonlinear relations and analytic methods would require more complex design tools. The design is therefore enhanced by the use of fuzzy model prototypes obtained via a data-driven approach, thus representing the key point if real-time solutions have to implement the proposed fault tolerant control strategy. Finally, a high-fidelity simulator including hardware-in-the-loop modules is exploited to validate the reliability and robustness characteristics of the developed methodologies also for on-line implementations.
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    Article
    Citation - WoS: 15
    Citation - Scopus: 11
    The Relation Between Thermal Comfort and Human-Body Exergy Consumption in a Temperate Climate Zone
    (Elsevier Science Sa, 2019) Turhan, Cihan; Akkurt, Gulden Gokcen; Gokcen Akkurt, Gulden
    Human body exergy balance calculation method gives minimum human body exergy consumption rates at thermal neutrality (TSV = 0) providing more information on human thermal responses than other methods. The literature is lacking the verification of this method in various climatic zones. The aim of this study is to investigate the relationship between thermal comfort and human body exergy consumption in a temperate climate zone. A small office building in Izmir Institute of Technology campus, Izmir/Turkey, was chosen as a case building and equipped with measurement devices. The occupant was subjected to a survey via a mobile application to obtain his Thermal Sensation Votes. Objective data were collected via sensors and used for predicting occupant thermal comfort and for exergy balance calculations. Under given conditions, the results show that Thermal Sensation Votes are generally zero at a T-i range of 21-23 degrees C and, are mostly lower than Predicted Mean Votes in summer while the opposite is observed in winter. Predicted Mean Votes at minimum Human Body Exergy Consumption rates were on slightly warm side while Thermal Sensation Votes are zero. It means that for given case, the HBexC rate calculation gave a better prediction of the environmental parameters for the best thermal comfort. (C) 2019 Elsevier B.V. All rights reserved.
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    Article
    A Case Study on the Assumption of Mean Radiant Temperature Equals To Indoor Air Temperature in a Free-Running Building
    (2021) Özbey, Mehmet Furkan; Turhan, Cihan
    Thermal comfort is basically affected by environmental (mean radiant temperature, indoor air temperature and relative humidity and air velocity) and personal parameters (clothing value and activity level). Mean Radiant Temperature is the most complicated parameter among all thermal comfort parameters due to the difficulty of measurement and calculation processes. Calculation methods are not preferred by the researchers because of the complexity of obtaining angle factors while the measurement methods require very expensive devices such as globe thermometers and radiometers. On the other hand, assumptions are commonly used in thermal comfort studies because of their simplicities. One of the most frequently used assumptions expresses the equality of mean radiant temperature to indoor air temperature. However, the accuracy of this assumption needs further experimental research in order to evaluate thermal comfort, especially in free-running buildings. To this aim, this study proposes to determine the accuracy of the assumption of mean radiant temperature equals to indoor air temperature in a free-running building where Adaptive Thermal Comfort approach is applied in summer condition. Environmental parameters are measured via objective sensors, while adaptive thermal comfort is assessed by a software program. The statistical results show that there are significant deviations between two parameters in summer conditions for a free-running building.
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    Article
    Citation - WoS: 18
    Citation - Scopus: 19
    Effect of Pre-And Post-Exam Stress Levels on Thermal Sensation of Students
    (Elsevier Science Sa, 2021) Turhan, Cihan; Ozbey, Mehmet Furkan
    The Predicted Mean Vote and Predicted Percentage of Dissatisfied (PMV/PPD) method is used worldwide to assess thermal comfort. The PMV/PPD method traditionally depends on four environmental parameters; air temperature, relative humidity, mean radiant temperature and air velocity, and two personal parameters; metabolic rate and clothing insulation. However, accurate modelling of thermal comfort requires consideration of psychological impacts, as well as associated physical responses to the environment. This paper investigates the effect of one of the psychological parameters; stress level on the thermal sensation of students for male and female which can be a sufficient limitation of the accuracy of thermal comfort/sensation models. Actual Thermal Sensation (ATS) and Profile of Mood States (POMS) are used to examine the effect of stress level on the thermal sensation. Pre-test-Post-test Control (PPC) experimental design is conducted on the students in a university, Ankara, Turkey, which has a Csb type climate zone according to Koppen-Geiger climate classification. First, students are split into two random groups; control and experimental groups. The students in experimental group are requested to attend exam while the students in control group read their favourite books. Then, students are subjected to pre-and post-exam surveys in order to understand the relationship between stress level and ATS. As a supportive analysis, Heart Rate (HR) and Skin Temperature (ST) are also included in the study as sympathetic responses of occupants to the thermal discomfort due to stress. Smart wristbands and infrared thermometers are used to measure Heart Rate and Skin Temperature of the students. Results showed that there is a difference between control group and experimental group before the exam (pre-test) except the ST of females. After the exam (post-test), there are no significant differences between two groups. (C) 2020 Elsevier B.V. All rights reserved.
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    Article
    Citation - WoS: 6
    Citation - Scopus: 5
    Reconstructing Energy-Efficient Buildings After a Major Earthquake in Hatay, Türkiye
    (Mdpi, 2024) Saleh, Yousif Abed Saleh; Akkurt, Gulden Gokcen; Turhan, Cihan; Gokcen Akkurt, Gulden
    T & uuml;rkiye's earthquake zone, primarily located along the North Anatolian Fault, is one of the world's most seismically active regions, frequently experiencing devastating earthquakes, such as the one in Hatay in 2023. Therefore, reconstructing energy-efficient buildings after major earthquakes enhances disaster resilience and promotes energy efficiency through retrofitting, renovation, or demolition and reconstruction. To this end, this study proposes implementing energy-efficient design solutions in dwelling units to minimize energy consumption in new buildings in Hatay, Southern Turkiye, an area affected by the 2023 earthquake. This research focused on a five-story residential building in the district of Kurtlusar & imath;maz & imath;, incorporating small-scale Vertical-Axis Wind Turbines (VAWTs) with thin-film photovoltaic (PV) panels, along with the application of a green wall surrounding the building. ANSYS Fluent v.R2 Software was used for a numerical investigation of the small-scale IceWind turbine, and DesignBuilder Software v.6.1.0.006 was employed to simulate the baseline model and three energy-efficient design strategies. The results demonstrated that small-scale VAWTs, PV panels, and the application of a green wall reduced overall energy use by 8.5%, 18%, and 4.1%, respectively. When all strategies were combined, total energy consumption was reduced by up to 28.5%. The results of this study could guide designers in constructing innovative energy-efficient buildings following extensive demolition such as during the 2023 earthquake in Hatay, T & uuml;rkiye.
  • Thumbnail Image
    Article
    Citation - WoS: 16
    Citation - Scopus: 18
    A Comprehensive Comparison and Accuracy of Different Methods To Obtain Mean Radiant Temperature in Indoor Environment
    (Elsevier, 2022) Ozbey, Mehmet Furkan; Turhan, Cihan
    Thermal comfort is defined as "the state of mind which expresses satisfaction with the thermal environment" by the American Society of Heating, Refrigerating and Air Conditioning Engineers in the standard of the ASHRAE55. Thermal comfort is affected by six main parameters which are split into two categories; personal (basic clothing insulation value and metabolic rate) and environmental (air temperature, relative humidity, air velocity, and mean radiant temperature) parameters. The mean radiant temperature is a problematic parameter in thermal comfort studies due to its complexity. The mean radiant temperature approaches are based on different techniques such as calculation methods, measurement methods, and assumptions. Although the assumptions are utilized by researchers to abstain complexity, their accuracies are uncertain. To this aim, this study purposes to find the accuracies of calculation and assumption methods by comparing with reference measurement method. An office building in a temperate climate zone is selected as a case study. Two calculation methods and eight assumptions on obtaining mean radiant temperature are compared via in-situ measurements. The results revealed that using assumptions or calculation methods to obtain the mean radiant temperature caused a significant error compared to the reference method and researchers should consider accuracies of these methods before utilizing them in their applications.
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    Master Thesis
    Bir Eğitim Binasının Termal Konfor İncelenmesi ve Güçlendirilmesi Stratejileri
    (2022) Rashıd, Sanarya Ghazı Rashıd; Turhan, Cihan
    Binaların, küresel sürdürülebilir kalkınma açısından en büyük enerji tüketicilerinden biri olduğu bilinmektedir. Teknolojik gelişmeler çevre dostu binaların inşasına aktif olarak yardımcı olsa da, mevcut binalar da önemli miktarda enerji tüketiyor. En önemli yapı türlerinden biri de inceleyeceğimiz eğitimdir. Gelecek nesillere kaliteli bir eğitim verebilmek için kaliteli okul yapılarına sahip olunması gerekmektedir. Binayı birçok faktör etkilerken, ısıl konfor öğrencileri etkileyen en etkili faktördür. Termal konfor, bir insanın termal çevresi ile olan zevkini ifade eder. Hoş bir termal ortam, fiziksel ve zihinsel sağlığı destekler. Bu çalışma, bu faktörü dikkate almakta ve tasarımı yeniden inşa etmeden farklı iyileştirmeler ekleyerek eğitim binalarında ısıl konforu iyileştirme potansiyelini incelemeye çalışmaktadır. Halihazırda mevcut bir binanın analiz modeli Atılım Üniversitesi, Ankara Design Builder yazılımı kullanılarak yapılmıştır. İlk olarak orijinal kasa binası üzerinde simülasyon yapılmıştır. Daha sonra binanın modifiye edilmiş kasaları üzerinde, toplamda yedi kasa simülasyonu yapılmıştır. pencere ve çerçeve tiplerini değiştirmeyi, bir Trombe duvarı eklemeyi içerir. Yalıtım malzemesinin her seferinde üç farklı malzeme ile değiştirilmesi, güneş kollektörü eklenmesi, ayarlanan sıcaklık ve hava sızdırmazlığının değiştirilmesi ve ışık sistemlerinin led tipine dönüştürülmesi. Model, yıllık enerji tüketimi için simüle edilmiş ve sonuçlar kaydedilmiştir Bu, ilk vi güçlendirme senaryosu seçeneğiydi. Bina yöneliminin revizyonunu dikkate alan teorik bir yeniden tasarım senaryosu da oluşturuldu. Vakalar arasında karşılaştırmalı bir analiz yapılmış ve çalışma, hava sızdırmazlığının hiçbir vakadan etkilenmediğini, öğrenci ısıl konforu için en etkili durumun ise öğrenci rahatsızlık saatlerini %17 azaltan Taşyünü yalıtım malzemesi uygulaması olduğunu göstermiştir. CO2 emisyonlarını azaltmak ve enerji tüketimini azaltmak için en etkili olurken, hava sızdırmazlığı hiçbir durumdan etkilenmedi. ve güneş kollektörü uygulamak en pahalı durumdu.
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    Conference Object
    Citation - WoS: 1
    Citation - Scopus: 2
    Hardware-In Assessment of a Fault Tolerant Fuzzy Control Scheme for an Offshore Wind Farm Simulator
    (Elsevier, 2022) Simani, Silvio; Farsoni, Saverio; Turhan, Cihan
    To enhance both the safety and the efficiency of offshore wind park systems, faults must be accommodated in their earlier occurrence, in order to avoid costly unplanned maintenance. Therefore, this paper aims at implementing a fault tolerant control strategy by means of a data-driven approach relying on fuzzy logic. In particular, fuzzy modelling is considered here as it enables to approximate unknown nonlinear relations, while managing uncertain measurements and disturbance. On the other hand, the model of the fuzzy controller is directly estimated from the input-output signals acquired from the wind farm system, with fault tolerant capabilities. In general, the use of purely nonlinear relations and analytic methods would require more complex design tools. The design is therefore enhanced by the use of fuzzy model prototypes obtained via a data-driven approach, thus representing the key point if real-time solutions have to implement the proposed fault tolerant control strategy. Finally, a high-fidelity simulator relying on a hardware-in-the-loop tool is exploited to verify and validate the reliability and robustness characteristics of the developed methodology also for on-line and more realistic implementations. Copyright (C) 2022 The Authors.