3E Analysis of the Effect of Different Type of Fans on Cooling Performance Applied to an Industrial Deep Freezer

Year 2021, , 1621 - 1637, 31.10.2021

Cemil Ocak , Süleyman Erten , Furkan İşgen , Erhan Arslan , Meltem Koşan , Esra Demirci , Mustafa Aktaş

https://doi.org/10.29130/dubited.840795

Abstract

In this study, two different industrial refrigerators were designed, manufactured and tested to analyze the impact of different types of fans (Type 1 and Type 2) used in industrial cooling systems on the performance of the cooling system. In order to test the fan performance and airflow effects, two axial fan configurations with different structures and different motor technology (EC and shaded-pole induction) were tested in two separate industrial refrigerator test rooms in accordance with TS EN ISO 23953-2 standards. R290 (Propane) was used as a refrigerant in the systems. The average temperature and relative humidity values of the environment where the experiment was conducted were measured as 25 °C and 60 % (Class 3), respectively. During the experiments, the total of 51.71 kWh energy was consumed in system 1, while the total of 54.22 kWh energy was consumed in system 2 and the difference between the energy consumption of the two systems was calculated as 4.85%. The average temperatures of the inlet and outlet of the evaporator of the system 1 and 2 were -21.57 °C, -18.97 °C and -23.43 °C, -20.94 °C, respectively. The average refrigerant temperatures for the system 1 and 2 were calculated as -24.65 °C, -26.44 °C, respectively. While the average coefficient of performance value of the type 1 system was 1.74, it was calculated as 1.54 for the type 2 cooling system. The average second-law efficiencies for the two cooling systems were calculated as 30.85 % and 29.81 %, respectively. In addition, the environmental economy analysis was carried out using the amount of CO2 that was prevented from emitting and the CO2 emission price calculated accordingly.

Keywords

Refrigerator, Cooling, Axial Fan, Energy, Energy Efficiency

Thanks

We would like to thank Nurdil Refrigeration Inc. for its contributions to this work.

Endüstriyel Derin Dondurucuya Uygulanan Farklı Tip Fanların Soğutma Performansına Etkisinin 3E Analizi

Abstract

Bu çalışmada, endüstriyel soğutma sistemlerinde kullanılan farklı tip fanların (Tip 1 ve Tip 2) soğutma sisteminin performansına etkisini analiz etmek için iki farklı endüstriyel buzdolabı tasarlanmış, üretilmiş ve test edilmiştir. Fan performansını ve hava akış etkilerini test etmek için farklı yapılarda ve farklı motor teknolojilerine (EC ve gölge kutuplu indüksiyon) sahip iki adet aksiyal fan konfigürasyonu, TS EN ISO 23953-2 standartlarına göre iki ayrı endüstriyel buzdolabı test odasında test edilmiştir. Sistemlerde soğutucu akışkan olarak R290 (Propan) kullanılmıştır. Deneyin yapıldığı ortamın ortalama sıcaklık ve bağıl nem değerleri sırasıyla 25 ° C ve % 60 (Sınıf 3) olarak ölçülmüştür. Deneyler sırasında 1. sistemde toplam 51.71 kWh enerji tüketilirken 2. sistemde toplam 54.22 kWh enerji tüketilmiş ve iki sistemin enerji tüketimi arasındaki farkı % 4.85 olarak hesaplanmıştır. Sistem 1 ve 2'nin buharlaştırıcısının giriş ve çıkışının ortalama sıcaklıkları sırasıyla -21.57 °C, -18.97 °C ve -23.43 °C, -20.94 °C’dir.

Sistem 1 ve 2 için ortalama soğutucu akışkan sıcaklıkları sırasıyla -24.65 °C ve -26.44 °C olarak hesaplanmıştır. Tip 1 sistemin ortalama performans katsayısı değeri 1.74 iken, tip 2 soğutma sistemi için 1.54 olarak hesaplanmıştır. İki soğutma sistemi için ortalama ikinci kanun verimleri sırasıyla % 30.85 ve % 29.81 olarak hesaplanmıştır. Ayrıca emisyonu önlenen CO2 miktarı ile çevre ekonomisi analizi yapılmış ve buna göre CO2 emisyon fiyatı hesaplanmıştır.

Keywords

Buzdolabı, Soğutma, Aksiyal Fan, Enerji, Enerji Verimliliği

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