共查询到18条相似文献,搜索用时 31 毫秒
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辅助加热式太阳能热水器 总被引:2,自引:0,他引:2
为使太阳能热水器一年四季都能使用,笔者设计并制作了—种电辅助加热的太阳能热水器,现介绍如下。 一、功能特点 1.在天气许可的情况下,可只用太阳能加热。 2.具有电加热功能。在阴雨天或寒冷季节,可开启电加热器加热,待水温达到要求时能自动断电。 相似文献
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正随着消费者的生活水平提高,对家电的功能、设计需求越来越高,而传统家电产品也进入了更新换代的时代,由此催生了家电的高端化。可是何为高端,其产品性能究竟如何,市场上说法不一,消费者也是一头雾水,为了规范市场行为,保障企业和消费者的合法权益,引导消费者合理选购,中国家用电器研究院与北京中轻联认证中心在2012年联合推出了家电产品性能A+认 相似文献
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A control system is described for a heat pump water heater which uses the thermostat on an existing electric water heater to determine the need for water heating. The control system allows an installer to wire in an electric water heater with the heat pump using the same connections for supplying power to the water heater which would normally be used. This control system will also automatically turn off the heat pump when frost forms on the evaporator coil and will allow the electric elements in the tank to heat the water. The system is easy to install, provides reliable operation of a heat pump, does not create any unusual safety problems, and gives uninterrupted hot water service. 相似文献