fong3 jit6放熱放热

Jyutpingfong3 jit6

Yalefong yiht

Definition

To release or give out heat; exothermic.

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How it's used

Primarily used in technical or engineering contexts regarding electronics, engines, or mechanical devices. It describes the physical process of heat escaping or being vented away from a system. While it can be used for biological contexts, it is far more common to hear it when discussing why a device is overheating or how a cooling system functions.

Examples

bou6部din6電nou5腦hou2好jit6熱，jiu3要fong3放jit6熱sin1先dak1得。

The computer is very hot, it needs to release heat.

ni1呢go3個cit3設gai3計hai6係mai6咪fong1方bin6便fong3放jit6熱㗎？

Is this design meant to help with heat dissipation?

Common phrases

fong3放jit6熱gung1功nang4能

heat dissipation function

fong3放jit6熱haau6效leot2率

heat dissipation efficiency

Common mistake

Do not confuse this with 散熱, which is the more common term for the general concept of heat dissipation or cooling. While 放熱 focuses on the act of releasing heat, 散熱 is the standard term used for cooling fans, heat sinks, and general temperature reduction strategies.