Lecture
This lecture covers the classification of heat pumps and refrigeration systems, including heat pumps with different heat sources and sinks, such as ambient temperature and industrial applications. It also discusses the types of heat pumps based on energy input, including electricity-driven and heat-driven systems, as well as different energy drivers like electricity, heat, and others. The lecture further explores specific types of heat pumps, such as geothermal heat pumps, solar-assisted heat pumps, and absorption heat pumps, highlighting their working principles and applications.