The best replacement for phase change is water cooling.

The best alternatives to phase change are rated as following:
★★★★★  water cooling
★★★★★  chemical change

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Speaking about phase change, one probably shouldn't forget about convection.

Other search terms related to phase change and their ratings are:
★★★★★ convection
★★ no heat transfer
You have in mind a companion for phase change and it is not yet here? Propose!



Google Trends

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phase change
water cooling
chemical change