ENERGY AND ENVIRONMENTAL ASSESSMENT OF CO2 BOOSTER REFRIGERATION CYCLES WITH FLOODED EVAPORATORS AND PARALLEL COMPRESSOR FOR SUPERMARKETS IN TÜRKİYE

Year 2024, Volume: 44 Issue: 1, 17 - 31, 03.06.2024

Nagihan Bilir Sağ Metehan Işık

https://doi.org/10.47480/isibted.1493766

Abstract

CO2 booster refrigeration systems have higher energy efficiency and are more environmentally friendly. Therefore, the CO2 booster refrigeration cycle with flooded evaporators and parallel compressors (BFP), BFP with mechanical subcooling (BFP-MSC), and BFP with evaporative cooling (BFP-EVC) are investigated for supermarkets in this study. For the first time in the literature, these systems are analyzed to present which system performs better in terms of energy and environmental performance for Türkiye. According to the results of the investigation, BFP-MSC has a better coefficient of performance (COP) values than BFP, with up to a 16.67% increase at equivalent dry bulb temperatures. Meanwhile, BFP-EVC has the lowest annual energy consumption (AEC) in each city, followed by BFP-MSC and then BFP. Annual savings obtained by BFP-EVC over BFP vary between 10.81% to 25.47%. Additionally, BFP-EVC offers more substantial savings in cities with lower humidity levels, as it was analyzed with respect to wet bulb temperatures.

Keywords

Booster systems, CO2, Energetic analysis, Environmental analysis, Supermarket refrigeration

TÜRKİYE'DEKİ SÜPERMARKETLER İÇİN YAŞ EVAPORATÖRLÜ VE PARALEL KOMPRESÖRLÜ CO2 BOOSTER SOĞUTMA ÇEVRİMLERİNİN ENERJİ VE ÇEVRE ANALİZİ

Abstract

CO2 booster soğutma sistemleri yüksek enerji verimliliğine sahip olup çevre dostudur. Bu nedenle, bu çalışmada süpermarketler için CO2 akışkanlı yaş evaporatörlü ve paralel kompresörlü soğutma çevrimi (BFP), BFP’ye mekanik aşırı soğutma eklenen soğutma çevrimi (BFP-MSC) ve BFP’de buharlaşmalı soğutma kullanılan soğutma çevrimi (BFP-EVC) incelenmiştir. Bu sistemler analiz edilerek enerji ve çevre performansı açısından hangi sistemin daha iyi performans gösterdiği literatürde ilk kez Türkiye'deki süpermarketler için ortaya konulmuştur. Araştırma sonuçlara göre, BFP-MSC’nin aynı kuru termometre sıcaklıklarında BFP'ye göre %16.67'ye kadar daha yüksek soğutma performans katsayısına (COP) sahip olduğu belirlenmiştir. Bunun yanı sıra, her şehirde BFP-EVC, en düşük yıllık enerji tüketimine (AEC) sahiptir, onu BFP-MSC ve ardından BFP takip etmektedir. BFP-EVC'nin BFP'ye göre sağladığı yıllık tasarruf %10.81 ile %25.47 arasında değişmektedir. Ek olarak, BFP-EVC, yaş termometre sıcaklıklarına bağlı olarak analiz edildiği için, nem oranının düşük olduğu şehirlerde daha yüksek tasarruflar sağlamaktadır.

Keywords

Booster sistemleri, CO2, Enerji analizi, Çevre analizi, Süpermarket soğutma

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