A liquid-to-liquid heat exchanger uses a heat-transfer fluid that circulates through the solar collector, absorbs heat, and then flows through a heat exchanger to transfer its heat to water in a storage tank. Heat-transfer fluids, such as antifreeze, protect the solar collector from freezing in cold weather.
The command to add a Venn Diagram or a process chart on PowerPoint Online is to select the Insert tab, then select the SmartArt button, and there is the process charts listed under Process. But the Venn Diagram is listed under List.
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yes u are trus
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