My master thesis deals with systems with several operating states that generate heat and store it in a heat storage. Thereby I analyze combined heat and power plants with combustion engines, but also heat pumps.
Now I am looking for a comprehensive term for such systems in my thesis and in the title. The term "heat generators" seems a bit too simplified to me.
Are there any more specific alternatives for a comprehensive term that might also point to the heat storage tank and the limited number of operating states?