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据美国《大众科学》杂志1993年11月号报道,美国佐姆沃克斯公司推出一种用于太阳能热水器的水管,即使冬季气温降至零度以下。暴露在室外的水管也不会因结冰而爆裂。
According to the November 1993 issue of the “Popular Science” magazine, the US company Zum Vaux introduced a water pipe for solar water heaters, even if the temperature drops below zero in winter. Water pipes that are exposed outdoors will not burst due to freezing.