Výsledky vyhledávání - "Ümit İşkan"

Akademický článek

Experimentally Performance Evaluation of a Dual Evaporator Ejector Refrigeration System with Diffuser Outlet Split Configuration under Varied Compressor Inlet Pressures

Autor: Gizem Çetin, Ümit İşkan, Mehmet Direk, Mahmut Cüneyt Kahraman, Cüneyt Tunçkal

Publikováno v: Hittite Journal of Science and Engineering, Vol 11, Iss 2, Pp 49-56 (2024)

In this research, an experimental investigation was conducted on a dual-evaporator ejector system (DEES). The experiments were conducted under two distinct configurations, known as condenser outlet split (COS) and diffuser outlet split (DOS), across

Externí odkaz: https://doaj.org/article/a4303a3709934f0eb00a5d6f315649ce

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Akademický článek

Comparison of R134a and R516A’s Performance at Different Air Velocities in Two Evaporator Ejector Cooling System

Autor: Mahmut Cüneyt Kahraman, Ümit İşkan, Mehmet Direk

Publikováno v: Hittite Journal of Science and Engineering, Vol 10, Iss 1, Pp 69-76 (2023)

This study aims experimentally to investigate the performance parameters of R134a and the alternative R516A refrigerant in two evaporator ejector cooling system (DEES) at different air velocities of evaporator#1. Firstly, the tests were carried out w

Externí odkaz: https://doaj.org/article/8e853c81016f4743bb39b71a8020cd81

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Experimental performance analysis of ejector heat pump water heater under transient conditions

Autor: Mehmet Direk, Ümit İşkan, Batuhan Üğüdür, Mahmut Cüneyt Kahraman

Publikováno v: Science and Technology for the Built Environment. :1-10

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7219169e485b69feb7bdf3178335beb6
https://doi.org/10.1080/23744731.2023.2193117

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R515A soğutucu akışkanlı tek kompresör ve iki buharlaştırıcılı deneysel soğutma sisteminde ejektör sürüklenme oranının ve yoğuşma sıcaklığının performans parametrelerine etkisinin incelenmesi

Autor: Ümit İŞKAN, Gizem ÇETİN, Mahmut Cüneyt KAHRAMAN, Mehmet DİREK

Publikováno v: Journal of Innovative Engineering and Natural Science. 1:53-66

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10ed5e51b266b18833454c735af25815
https://doi.org/10.29228/jiens.66276

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Evaluation of the impact of the temperature and mass flow rate of the water, utilized in the R516A refrigeration system with dual evaporator and ejector, on the performance parameters

Autor: Ümit İşkan, Batuhan Üğüdür, Mahmut Cüneyt Kahraman, Mehmet Direk, Cüneyt Tunçkal

Publikováno v: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. 44:7316-7329

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95cfb7cfc348f009202114e5e35da14e
https://doi.org/10.1080/15567036.2022.2108526

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Comparison of R134a and R516A’s performance at Different Air Velocities in Two Evaporator Ejector Cooling System

Autor: Ümit İŞKAN, Mahmut Cüneyt KAHRAMAN, Mehmet DİREK

Publikováno v: Hittite Journal of Science and Engineering.

This study aims experimentally to investigate the performance analysis of R134a and alternative R516A refrigerant in two evaporator ejector cooling system (DEES) at different air velocities of evaporator#1. Firstly, the tests were carried out with R1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a83cc8d9df69a625ef327180fa62ba77
https://doi.org/10.17350/hjse19030000293

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Experimental investigation on the effect of expansion valves in a dual evaporator ejector refrigeration system using R134a and R456a

Autor: Ümit Işkan, Mehmet Direk

Publikováno v: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. :1-15

The purpose of this study was to experimentally investigate a dual evaporator ejector system (DEES) operating with R134a and R456a. In order to see the effect of expansion valves in the system, the...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2e64a431454707595f141ffce7fc9be
https://doi.org/10.1080/15567036.2021.1982076

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Otomobil İklimlendirme Sistemlerinde Farklı Soğutucu Akışkan Kullanılmasında Kompresörün Hacimsel Verim Analizi

Autor: Ümit Işkan, Mehmet Direk, Fikret Yüksel, Eren Soylu

Publikováno v: International Journal of Pure and Applied Sciences. 7:41-50

Bu çalışmada otomobil klima sisteminde farklı soğutucu akışkanlar kullanılarak kompresör volumetrik verim değerlerinin analizi yapılmıştır. Literatürde önerilen ampirik bağıntıdan elde edilen volumetrik verim değerlerinin çalış

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1f932fe41c1ef2a39a9250ba7a3d6bb3
https://doi.org/10.29132/ijpas.881952

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Volumetric Efficiency Evaluation of the Use of Refrigerants R445a, R515a, R456a, ND, and R516a with Low GWP Instead of R134a

Autor: Ümit Işkan, Fikret Yüksel, Cemil Koyunoğlu, Mehmet Direk

Publikováno v: Volume: 11, Issue: 1 500-511
Journal of the Institute of Science and Technology

In this study, the performance of different refrigerants (with low GWP value) depending on thermophysical properties in the cooling system was evaluated. The cooling capacities of R134a, R445a, R515a, R456a, ND, and R516a refrigerants used in the coo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4a26727aaafcb8ee6684c5bb8d6689a
https://doi.org/10.21597/jist.734720

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