In the colder months, to maintain both indoor and outdoor swimming pools comfortable, a significant amount of heat is required. This drives the development of various heating systems with the goal of lowering energy consumption, as well as operating and capital expenses. Despite the fact that they were created in the 1960s,, There hasn't been a thorough examination of these technologies. As a result, this study provides a crucial complete overview of the evolution of swimming pool heating systems that are being used in our daily life and the world orientation of people who use swimming pools in all its types and for different applications. The first section of this study examines the various heat exchange methods that is used to quantify or forecast heat dissipation and gains in swimming pools. Following that, a summary of several passive and active technologies is provided. Solar collectors, geothermal energy,heat pumps, loss heat recovery, and aggregation techniques are some of the active heating methods utilized in indoor swimming pools. The technologies of solar collectors, geothermal energy, PCM storage, heat pumps, waste heat recovery and biomass heaters, are some of the active heating systems utilized for outdoor swimming pools.

Pool Solar Collector, heating swimming pool, indoor swimming pools system .