It's not true. An isolated system is a system without any energy transfer and material exchange with the outside world; The closed thermal insulation system is based on the fact that there is no material exchange and no heat exchange between the closed system and the outside world, which only shows that there is no material and heat exchange between the system and the outside world, but it does not mean that there is no energy exchange.

The energy of an isolated system is conserved, so is the number of particles. No energy or mass can enter or leave an isolated system, but can only move within the system.

A closed thermal insulation system can only isolate the exchange of materials and heat, but not the exchange of energy.

Therefore, an isolated system must be a closed adiabatic system, and a closed adiabatic system must be an isolated system.

Extended data:

Both isolated system and closed system belong to a kind of thermal system. Thermodynamic systems can be classified in many ways:

1, according to whether there is material exchange with the outside world, the system is divided into open system and closed system.

2. Classify the system according to the chemical properties of the substances that make up the system:

A thermodynamic system composed of chemically pure substances is a unit system, because it contains only one chemical component, that is, only one molecule; A system consisting of two or more chemical components is called a multicomponent system.

3. Classify system definitions according to the nature of each part of the system:

A system in which each part has the same properties is a homogeneous system/single-phase system; When the nature of each part of the system is different, the system is heterogeneous; If the whole system is not uniform, but can be divided into several uniform parts, it is a multiphase system. ?

Baidu Encyclopedia-Isolated System

Baidu Encyclopedia-Closed System