What are diathermal walls, diabatic walls, and adiabatic walls?
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Solution
Diathermal walls or diabatic walls:
A diabatic wall (also spelled diathermal wall) is a type of wall that allows heat to pass through it.
The diathermal wall is significant because it is common in thermodynamics to assume a closed system a priori.
Even though it is not customary to label this assumption separately as an axiom or numbered law, the physical existence of the transfer of energy across a wall that is impermeable to matter but is not adiabatic is known as the transfer of energy as heat.
Adiabatic walls:
In thermodynamics, an adiabatic wall between two thermodynamic systems does not allow heat or chemical substances to pass through it.
It is implying that neither heat nor mass is transferred.
