There are two streams of liquid flowing through the heat exchanger. As these streams pass opposite sides of the tube thermal energy flows transfers liquid A or liquid B

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

The answers is a nuclear changes