کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
270825 1429279 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Choosing heat sinks for cooling in tropical climates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Choosing heat sinks for cooling in tropical climates
چکیده انگلیسی

Efforts to limit CO2 emissions from buildings in the tropics either focus on reducing energy demand, i.e., air-conditioning, or on replacing fossil with renewable sources. The link between energy demand and supply is often overlooked, especially the effect of the temperature lift of air-conditioning systems on energy consumption. But while heat and humidity gains define energy demand, operating temperatures of the system define the necessary energy input. We aim to transfer our experience of using the LowEx paradigm for heat pump systems in moderate climates to the tropical climate of Singapore. In this paper, we took a systematic overview of a range of heat sinks, to which we refer to as anergy sinks. We analysed their thermal properties and their effect on the performance of air-conditioning systems, expressed as COP. The predominantly used dry air-cooled condenser units performed worst, especially when subject to a stack effect in (semi-)confined spaces. The performance is highest for cooling towers using the wet bulb temperature followed by water body based anergy sinks and the soil. The wide spread of results confirms that the heat rejection temperature is a decisive factor for the performance of the overall cooling system and the input of primary energy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Frontiers of Architectural Research - Volume 2, Issue 3, September 2013, Pages 292–300
نویسندگان
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