• Study of the thermosiphon operation.
  • Study of the luminosity profile of the lamps.
  • Study of the efficiency of the solar panel.
  • Study of the influence of the tilt angle of the lamps panel on the unit efficiency.
  • Study of relation between the flow and the temperature.
  • Study of energy balance of the solar collector.
  • Study of energy balance of the accumulator tank.
  • Determination of the experimental efficiency.
  • Study of the influence of the angle of incidence on the temperature.



  • This unit is mounted on a metallic structure, with wheels for its mobility.
  • HDF panel construction with LED digital display instrumentation.

Solar panel (Thermal Solar Collector):

  • Anodized aluminum structure.
  •  Copper pipes, wrapped with insulating material, to connect the panel and the accumulator tank.
  • Area of the panel: more than 1.6m2
  • Material: tempered glass.

Hot Water Storage Tank:

  • Vacuum vitrified boiler
  • high efficiency heating circuit and anti-corrosion protections
  • Control: Thermostat with adjustable temperature
  • Tank Volume: 25L
  • Max. pressure: 9 bar.
  • Max. temperature: 120C.

Artificial Light Solar simulator:

  • Structure with adjustable height.
  • Solar spectrum lamps of 3000 W. 500W of total 6 lamps each, distributed into independent circuits.
  • Lamp control: Selector Switch and over temperature by magnetic Contactor
  • Tilt adjustment: 0~45o

Pumping system:

  • Pump: 0 to 3 lpm.
  • Pump Switch


  • Flow range: 1~15 L/min. in the primary circuit (forced circulation with pump).
  • Flow range: 2~45LPH. in the primary circuit (free circulation, without pump)
  • Flow range: 1~15 L/min. in the secondary circuit


  • Temperature sensors Range: -100 to 800oC
  • Digital Display for the temperature sensors
  • Manometer, range: 0 ~ 4 bar.
  • Safety valves for over-pressure protection.
  • The unit includes two “Horizontal slats ” type blinds to reduce a direct visual contact with the lamps and to reduce the direct contact with the solar panel when the unit is working.

The sun provides us a wide spectrum of solar energy. Except for the light that we see around us everyday, all of the other types of solar energy are invisible. The other parts of the spectrum consist of cosmic rays, gamma rays, x-rays, infrared, heat and ultraviolet energy. Solar radiation is a form of energy that can be transformed into other types of usable energies: electric, thermal, etc. The different systems that perform this transformation are part of the new clean technologies, which do not harm the environment. The Solar Thermal Energy Trainer allows to demonstrate solar thermal heating of domestic water in an illustrative manner and uses the thermosiphon solar system to heat water, or the traditional pumping system. The apparatus is a system that transforms solar energy into usable thermal energy. It uses the thermosiphon solar system to heat water or the traditional pumping system. In both cases, the absorbed thermal energy is given by the simulated solar radiation.In this trainer it is done using a panel with powerful luminous sources.

The trainer consists of the following elements:

  • Thermal solar collector
  • Storage Tank.
  • Artificial Light Source (Solar simulator)
  • Pumping system

The solar collector is mounted on an aluminum frame and the fluid (water) flows through cooper tubes. It has been developed in such a way that the geometrical shape of the surface allows the most efficient absorption. The accumulator tank is protected with an anti-corrosive material. It has a heating element with a safety device to prevent over temperatures. Lamps of the solar simulator emit radiation similar to the sun radiation, which is measured by a radiation sensor. The light is converted into heat in the solar collector and transferred to the heat transfer fluid. Three different configurations can be simulated with the solar simulator: all the lamps are turned on, half of the lamps are turned on in zig zag, or only one lamp is turned on. Besides, the apparatus includes a pump to perform a forced convection of the heat transfer fluid through the accumulator tank. The unit is fitted with sensors and meters to record the relevant parameters (temperature, flow and radiation) and are included safety valves for overpressure protection.