کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10156257 1666383 2018 45 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Integrated supermarket refrigeration for very high ambient temperature
ترجمه فارسی عنوان
یک یخچال سوپرمارکت مجتمع برای دمای بسیار بالای محیط
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
This paper analytically investigates and compares the performance of a proposed 'all-natural' NH3/CO2 cascaded booster system to a conventional R404A direct expansion system as well as to an 'all-CO2' system with multi-ejector unit and flooded evaporator. Performance comparison is made based on the annual combined COP and Life Cycle Climate Performance (LCCP) for operation in selected cities of Middle East and India. Our results show that in extreme warm climate, the energy efficiency of the proposed configuration exceeds that of all-CO2 configuration by a maximum of about 12.23% and the total emissions are lower by up to 11.20%. However, the all-CO2 multi ejector system performs better in cold and mild warm climate. In the NH3/CO2 cascade, the high temperature NH3 system can be designed to be isolated from the accessible locations of the supermarket. The work presented is expected to help adoption of natural refrigerants such as CO2 and NH3 for commercial application in extreme warm climate conditions prevailing in many cities of Middle East and India.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 165, Part A, 15 December 2018, Pages 572-590
نویسندگان
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