• anonymous
in what direction does heat flow on its spontaneously?
  • Stacey Warren - Expert
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  • katieb
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  • anonymous
Heat pumps, by contrast, use work to cause thermal energy to flow from low to high temperature, the opposite direction heat would flow spontaneously. An example is a refrigerator or air conditioner, where electric power is used to cool a low temperature system (the interior of the refrigerator) while heating a higher temperature environment (the exterior). High efficiency is achieved when the temperature difference is small. Found the above ... here : I didn't know about it actually, so just searched net and found this, may this help you?

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