The solar panel system consists of:
- Plate heat exchanger (delivered separately)
- Solar panel with fittings
- Steering unit (with sensors)
- Water tank / heat storage (delivered separately)
- Pipe part for connecting the solar panel circuit
1. At the bottom of the pool and in the lower part of the solar panel, two sensors are placed (S1 and S2); these decide when the steering unit sends electricity to the pump (P1) and starts heating the water. The pump starts when S2 and S1 feels the temperature in the pool is colder than the solar panel.
2. The pool water is pumped through its own pipe system from the bottom to the top of the collectors. The solar panel has a green house effect and heats the water as it moves along. The hot water exits at the top of the panel and pours back into the pool. The hottest water will lie on top of the heat storage, because hot water rises, while cold water sinks.
Alternative 1. The water in the pool is heated directly by the solar panel - it is important with a goof flow inside the panel, as boiling chlorine water can damage the collector. For example, if the temperature reaches 25 degrees Celsius, the return-temperature can reach 35 degrees Celsius. Return-pipes from the panel must be assembled above water level in the pool, to allow air into the pipes when the pump stops.
This can happen when:
- S1 and S2 has the same temperature
- The pool reaches too high temperatures (this can be adjusted)
- The solar panel has too low temperatures
Alternative 2. A water tank is mounted to the solar panel circuit. The system is then connected to a plate heat exchanger for the water to be pumped through before it circulates back through the solar panels. The plate heat exchanger can be connected to the current of the pools cleaning filters.
System drawing 1
System drawing 2
- Solar panel module: The main component in a solar panel area.
- Heat storage: A water tank which holds hot water from the solar panel.
- Steering unit: A differentiating thermostat which starts the solar panel pump.
- Plate heat exchanger: A unit which transfers heat energy between two fluids with different temperatures without mixing them.
- Solar panel circuit: The pipe system leading from the heat storage, through the entire solar panel and back into the heat storage again.
- Circulation pump: A unit pumping water from the tank, through the solar panel circuit.