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Equation 5 · Part 2 · How AI Datacenter Power and Cooling Actually Work

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ΔT\Delta T
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What this part means

Capital delta attached to a quantity marks a difference between two values of that quantity; the article’s sign convention determines the order.

Its job in the formula

Capital delta attached to a quantity marks a difference between two values of that quantity; the article’s sign convention determines the order.

The passage around this formula

where Q˙\dot{Q} is the heat to be removed (watts), m˙\dot{m} is the coolant mass flow rate, cpc_p is its specific heat, and Δ\Delta T is the temperature rise the coolant is allowed across the cold plate. This is the one relationship every cooling-loop sizing decision in this article reduces to: a facility either raises m˙\dot{m} (bigger pumps, more flow, more pumping power) or accepts a larger Δ\Delta T (which raises the return coolant temperature and can push a heat-reuse exchanger below its useful delivery temperature, discussed below). There is no way around the equation; every design choice downstream is a trade against these three terms.

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Learn the underlying idea

Addition combines quantities; subtraction measures the signed difference between them. Parentheses show what is combined before the rest of the expression is evaluated.

Open the illustrated addition and subtraction in an equation guide →

Sources cited in the article section

These citations provide research context; check each source for the exact claim it supports.