Symbol Δ T

The passage around this formula

Heat reuse imposes a real constraint back onto the cooling-loop design, and it is a direct consequence of the $\dot{Q}$ = $\dot{m}$ $c_p$ $\Delta$ T relation above: a district heating network needs delivery water above some useful temperature (often 60–90°C depending on the network), which is far above what a direct-to-chip loop returns on its own. A heat pump bridges that gap, but every heat pump has a coefficient of performance that…

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