| 摘要 |
An evaporative air cooler evaporates water in multistages by passing air across a series of spaced parallel wetted wicks (11) which repeatedly interrupt air flow. This enhances both evaporation and heat transfer rates. Wetting of the wicks (11) is achieved at their ends (22), and the wicks are either sloping or horizontal, not vertical, so that passage of water along the wicks is not impeded by gravity.
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