Method for the stabilisation and/or open-loop and/or closed-loop control of a working temperature, heat exchanger unit, device for transporting energy, refrigerating machine and heat pump

A method for operating cyclic-process-based systems having a hot-side reservoir (2) and a cold-side reservoir (3) and at least one fluid chamber (4, 5), having an evaporator region and a condenser region for a working fluid and having at least one heat-exchanger unit with at least one calorically active material element (11, 12), the calorically active material element (11, 12) being arranged in the fluid chamber (4, 5) so as to be indirectly or directly operatively connected to the working fluid and a heat transfer between the calorically active material of the calorically active material element (11, 12) and the working fluid takes place by latent heat transfer, the method comprising the following steps:

• A activating a field that is adapted to cause a change in temperature of the calorically active material such that the calorically active material is at least temporarily subjected to interaction with the field;
• B evaporating the working fluid through heating of the calorically active material by a first change in temperature, induced in method step A, of the calorically active material to above a base temperature;
• C discharging the working fluid to the hot-side reservoir (2) and condensing the working fluid at the condenser region, realizing heat transport by latent heat of the evaporated working fluid;
• D return transporting the condensed working fluid from the condenser region to the evaporator region;
• E deactivating the field;
• F causing a second, opposite change in temperature of the calorically active material to below the base temperature;
• G feeding of the working fluid from the cold-side reservoir (3) into the fluid chamber, wherein heat transport from the evaporator region into the fluid chamber is realized by latent heat of the evaporated working fluid;
• and
• H controlling or regulating the base temperature of the calorically active material element using a cooling fluid.