کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
763542 1462860 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance evaluation of an indirect pre-cooling evaporative heat exchanger operating in hot and humid climate
ترجمه فارسی عنوان
ارزیابی عملکرد یک مبدل حرارتی تبخیری قبل از خنک کننده که در هوای گرم و مرطوب اجرا می شود
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


• An IEHX is introduced as a pre-cooling unit for humid tropical climate.
• A computational model is developed to investigate the performance of IEHX.
• The air treatment process with condensation from the product air is studied.
• The hybrid system shows an appreciable energy saving potential.

A hybrid system, that combines an indirect evaporative heat exchanger (IEHX) and a vapor compression system, is introduced for humid tropical climate application. The chief purpose of the IEHX is to pre-cool the incoming air for vapor compression system. In the IEHX unit, the outdoor humid air in the product channel may potentially condense when heat is exchanged with the room exhaust air. A computational model has been developed to theoretically investigate the performance of an IEHX with condensation from the product air by employing the room exhaust air as the working air. We validated the model by comparing its temperature distribution and predicted heat flux against experimental data acquired from literature sources. The numerical model showed good agreement with the experimental findings with maximum average discrepancy of 9.7%. The validated model was employed to investigate the performance of two types of IEHX in terms of the air treatment process, temperature and humidity distribution, cooling effectiveness, cooling capacity, and energy consumption. Simulation results have indicated that the IEHX unit is able to fulfill 47% of the cooling load for the outdoor humid air while incurring a small amount of fan power. Consequently, the hybrid system is able to realize significant energy savings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 102, 15 September 2015, Pages 140–150
نویسندگان
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