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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-472-4

ISBN Online: 978-1-56700-471-7

3rd Thermal and Fluids Engineering Conference (TFEC)
March, 4–7, 2018, Fort Lauderdale, FL, USA

THEORETICAL ANALYSIS OF COMBINED COMPACT EVAPORATIVE COOLER

Get access (open in a dialog) pages 1409-1423
DOI: 10.1615/TFEC2018.hte.021631

摘要

An evaporative cooling system (ECS) has a number of benefits. First and foremost, it will use only a fraction of the energy of typical compressor-based cooling systems. ECS's is divided into three different types: 1) direct evaporative coolers (DECs), 2) indirect evaporative coolers (IECs), and (3) a combined system of direct and indirect evaporative coolers (DIECs). Although the DEC is simple and economical, the efficiency is low, as it cannot achieve a cooling temperature lower than wet bulb temperature. While some IECs or DIECs can achieve a higher performance, the system is complex and the initial cost is high. This paper presents a theoretical model of a combined compact evaporative cooler (CCEC), which utilizes thin film evaporation. To verify the model, the prediction has compared with experimental data, and results show that the model can be used to predict the effects of relative humidity and air flow rate based on the wet bulb effectiveness and dew point effectiveness in this CCEC system. Most importantly, it shows that this CCEC system can achieve an ultra-high cooling efficiency.