I am interested in how energy is covered in university engineering courses as the common fallacious view seems to be that energy flow can be regarded as an independent phenomenon. The reality is that energy operation is opposed by friction in many cases. Many know their cars must have oil to overcome the friction in the engine. But political discussions of energy treat it as commodity that does (positive) work such as supplying electricity without acknowledging that friction does negative work.
Thermodynamics is the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.
All the reactions going on in a refrigerator are isothermal as a constant temperature is maintained in it by a system using electrical energy. So isothermal is a selective term The melting of ice at zero degree is an example of a isothermal process using heat energy from the air. The reaction in a heat pump is an example of isothermal process using heat energy input from another system.
In thermodynamics theory, an adiabatic process is one that occurs without transfer of heat or matter between a thermodynamic system and its surroundings. An adiabatic process is one in which no heat is gained or lost by the system. The first law of thermodynamics with Q=0 shows that all the change in internal energy is in the form of work done. In the idealized adiabatic process, energy is transferred to its surroundings only as work. There are no practical examples of the adiabatic process.