Solar Pool Heater

Solar pool heater is a solar collector system which heating the swimming pool by solar collectors.It consists solar collectors,storage tank, heat exchanger, filters,controller box,circulation pumps ,pipelines and so on. It must have heat exchanger between storage tank and swimming pool for heat exchange. Because the swimming pools always has chemical for cleaning water and it is great damage to tank material.So we choose a great anti-rust material for heat exchanger ,usually we adopt stainless steel 316L .

There are two type solar collectors as heating device：Vacuum tube solar collector and flat panel solar collector .  The storage tank is for energy storage purpose.It storage heat from solar collectors at day time and prepare hot water for night time using. And storage tank type in pressurized or non-pressurized depends on solar collectors type. If solar collector is non-pressurized ,the storage tank should be non-pressurized .Open loop should be between storage tank and solar collector.If solar collector is pressurized ,the storage tank can be in both non-pressurized and pressurized.

Heat exchanger  is the must part for swimming pool and solar storage tank or directly exchange heat with solar collector once there is no storage tank for work. In such situation ,people usually have a backup heating for swimming pool for work. We usully suggest the brazed heat exchanger in stainless steel 316L for anti-rust purpose. But for storage tank ,if solar collector is non-pressurized, we do not need heat exchanger for work,If solar collector is pressurized and consider cold area, we will use glycol for anti-freezen ,the heat exchanger must be installed inside of storage tank or heat exchanger split installed between solar collector and storage tank for heat exchanging use.

About heating backup, for solar pool heater, solar collectors are working depends on solar ,if it is rainy or cloudy day,there would be no energy for swimming pool .Storage tank do not have enough hot water for supply heat to swimming pool and heat backup is nessissary. if solar pool heater is design with no storage tank, the heating backup is must for night. When we talk about backup heating,it can be electric boiler, gas boiler, air source heat pump   and other heating device. It is usually installed in pipeline in heat exchanger heat outlet for swimming pool.Once the heat is not enough, sensor of boiler will start work to supply heat.  Or split circulation work for swimming pool ,such as air source heat pump working in such way.

The solar pool heater works by controller automatically, the sensors give signal for controller and controller give command to circulation ative the circulation pump  for solar circulation heat exchange and swiming pool water  circulation with  heat exchanger.Once the swimming pool temperature is reached,the controller will give stop working command.