Question

what is heat balance​

Answer 1

Definition of heat balance

: the distribution of the heat energy supplied to a thermomechanical system (as a steam power plant) among the various drains upon it including both useful output and losses

also : an evaluation or record of such distribution

Answer 2

What is heat balance?

Heat balance happens when the amount of heat coming into the ship equals the amount of heat leaving the spacecraft. NASA engineers try to make a ship have heat balance by calculating heat sources and putting in heat sinks that will rid the ship of any excess heat.

Maintaining heat balance is harder when a ship is traveling towards or away from a large source of heat such as a star like the Sun or planet's atmosphere. The heat sinks need to compensate for a changing amount of heat.