Endüstriyel Soğutucularda Enerji Verimlilik Endeks Değerinin Azaltılmasına Yönelik Deneysel Bir Çalışma

Öz

Endüstriyel soğutucularda enerji verimlilik endeks (EVE) değerine göre enerji etiketlemesi yapılmaktadır. Tüketilen enerji miktarı ve soğutucunun özelliklerine göre hesaplanan EVE değerinin azaltılması amacıyla bu çalışmada iki sistem tasarlanmış ve elde edilen sonuçlara göre soğutucuların enerji etiketi sınıfı belirlenmiştir. Bu çalışmada, iki farklı soğutucu tasarlanmış (Tip 1 ve Tip 2), üretilmiş ve test edilmiştir. Sistemler homojen bir soğutma sağlamak için iki giriş-çıkış evaporatörlü, çift kondenserli ve çift kompresörlü yeni nesil doğal ve çevreci bir soğutucu akışkan olan R290 (propan) kullanılarak tasarlanmıştır. Deneyler sırasında soğutulan ürünlerin ve soğutma sistemi ekipmanlarının dakikada bir belirli noktalardan sıcaklık-basınç ölçümleri alınarak test verileri kaydedilmiştir. Deneylerde Tip 1 soğutucuda rezistans camlı deneyin test odasının ortalama hava sıcaklığı ve bağıl nem değerleri sırasıyla 25 ℃ ve % 59.09, buğu önleyici film kaplı cama sahip Tip 2 sistemi deneyinin test odasının ortalama hava sıcaklığı ve bağıl nem değerleri sırasıyla 25.231 ℃ ve % 57.207 olarak ölçülmüştür. Deneylerde soğutucularda günde ikişer kez defrost işlemi gerçekleştirilmiştir. Deney sırasında soğutulan ürünlerin en yüksek ve en düşük ortalama sıcaklıkları -16.18 ℃ ve -19.40℃ olarak ölçülmüştür. Buz çözme sırasında artan ürün sıcaklıkları ve soğutmanın durması, sistemdeki güç tüketimini artırmıştır. Hesaplamalar sonucunda Tip 1 rezistanslı modelde enerji verimlilik endeks değeri 60,53 hesaplanmış ve enerji etiketinin “E” sınıfı olduğu görülmüştür. Buğu önleyici kaplama film kullanılan Tip 2 modelinde ise enerji verimlilik endeks değeri 49,25 çıkmış ve enerji etiketinin “D” sınıfı olduğu görülmüştür.

Anahtar Kelimeler

• Rezistanlı Cam
• Buğu Önleyici Film
• Enerji Verimlilik Endeksi

An Experimental Study Towards Decreasing the Energy Efficiency Index Value in Industrial Refrigerators

Abstract

Energy labeling is performed according to the energy efficiency index (EEI) value in industrial coolers. In order to reduce the EEI value calculated according to the amount of energy consumed and the characteristics of the cooler. Two systems were designed in this study and the energy label class of the coolers was determined according to the obtained results. In this study, two different coolers (Type 1 and Type 2) were designed, manufactured and tested. The systems are designed using R290 (propane), a new generation natural and environmentally friendly refrigerant with two inlet-outlet evaporators, double condensers and double compressors to provide a homogeneous cooling. During the experiments, temperature-pressure measurements of the cooled products and cooling system equipment were taken from certain points every minute and test data were recorded. In the experiments, the average air temperature and relative humidity values of the test chamber of the experiment with resistance glass in the Type 1 cooler were measured as 25 ℃ and 59.09%, respectively, the average air temperature and relative humidity values of the test room of the Type 2 system experiment with antifogging film were measured as 25.231 ℃ and 57.207%, respectively. In the experiments, defrosting process was carried out twice a day in the coolers. During the experiment, the highest and lowest average temperatures of the cooled products were measured as -16.18 ℃ and -19.40 ℃. Increasing product temperatures during defrosting and stopping cooling increased the power consumption in the system. As a result of the calculations, the energy efficiency index value of the Type 1 resistance model was calculated to be 60.53 and it was seen that the energy label was class “E”. In the Type 2 model in which anti-fog coating film is used, the energy efficiency index value is 49.25 and it has been observed that the energy label is class "D".

Keywords

• Resistant Glass
• Anti-Fog Film
• Energy Efficiency Index

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