英语词汇“drain-water heat-recovery system”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	drain-water heat-recovery system
释义	Drain-water heat-recovery system Drain-water heat-recovery system A system that extracts heat from hot-water waste lines to preheat cold water before it reaches the water heater or tap; especially useful when paired with on-demand or solar hot-water systems. Also known as graywater heat-recovery system.
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Drain-water heat-recovery system