Person:
HARTOMACIOĞLU, SELİM

Profile Picture

Email Address

Birth Date

Research Projects

Organizational Units

OrgUnit Logo
Organizational Unit

Job Title

Last Name

HARTOMACIOĞLU

First Name

SELİM

Name

Filters

2019 - 201912020 - 20211
Reset filters

Settings

Subject: CFD analysis ×

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    PublicationOpen Access
    CFD analysis for predicting cooling time of a domestic refrigerator with thermoelectric cooling system
    (ELSEVIER SCI LTD, 2021-03) ONAT, AYHAN; Soylemez, Engin; Alpman, Emre; Onat, Ayhan; Hartomacioglu, Selim
    In this work, Computational Fluid Dynamics (CFD) analysis was conducted considering three different turbulence (viscous) models for a fresh food compartment of a domestic refrigerator (DR), in order to not only gain idea on cooling down time rate of fresh food compartment but also present air and temperature distribution inside the compartment when it is loaded. The refrigerator composes of three compartments: Fresh food (FFC), chill (CC) and freezer (FC). The FFC compartment is cooled by a thermoelectric/Peltier cooler (TEC) while the other compartments are handled by a vapour compression (VC) system. To measure cooling times, tests were conducted according to new IEC62552:2015 standard in climatic chambers and the cooling time was measured as 146.5 min. The predictions of developed CFD model clearly visualize the airflow and temperature fields inside the FFC. Concerning numerical predictions for the packages in the upper regions were in better agreement (below 10%) with measurements than the predictions for the packages in the lower regions mainly due to convective heat transfer behaviour. (C) 2020 The Author(s). Published by Elsevier Ltd.
  • No Thumbnail Available
    PublicationMetadata only
    Numerical (CFD) and experimental analysis of hybrid household refrigerator including thermoelectric and vapour compression cooling systems
    (ELSEVIER SCI LTD, 2019) ONAT, AYHAN; Soylemez, Engin; Alpman, Emre; Onat, Ayhan; Yukselenturk, Yalcin; Hartomacioglu, Selim
    Numerical and experimental analysis of a previously investigated hybrid household refrigerator (HHR), HHR I, were conducted in this study. To determine the optimum location for the thermoelectric cooler installed in HHR I, CFD analysis was performed. As a result of the CFD predictions, two new HHRs, namely HHR II and III, were created and experimentally investigated. CFD predictions showed a more uniform air velocity and temperature distributions inside the fresh food compartments of HHR II and III compared to HHR I. Additionally, experimental measurements indicated a considerable increase in the energy efficiency of HHR II and III. Their energy consumption was nearly identical and improvements of up to 10% and 27% at the ambient temperatures of 16 degrees C and 32 degrees C, respectively, were observed when compared to HHR I. Regarding the cooling time, no effect of the relocation of the TEC was observed at the TEC's nominal voltage of 24 V. (C) 2019 Elsevier Ltd and IIR. All rights reserved.