1. SOLAR COLLECTOR LaurenzTack Technological design engineering Docent: dr. ir. R. Versluys

2. Difference between solar collector and solar panels Solar collector Solar panels Solar energy  warm water Solar energy  electrical energy

3. 2 types of solar collectors Flat plate collectors Evacuated tube collectors

4. Solar collector system(at my home)

5. Outside inside

6. Plan of solar collector system

7. Gas burner Solar collector Solar boiler Expansion vessel Circulator pump Reserve boiler

8. The controller (Deltasol BS Plus) controls the system due to 3 sensors. Theymessure the temperature of the fluid in the solar collector, in the solar boiler (300l) and in the reserve boiler (200l). If the temperature in the solar collector is higher than in the boilers the controller ensures that the circulation pump starts to pump the coolant trough the inox pipes. If the coolant passes the solar collector the temperature of the fluid will rise. A Datalogger DL2 is connected to the controller. The collected data of the sensors can be followed on the internet. There has to be an expansion vessel in the circuit. If the boilers reach the maximum temperature that is required and the temperature in the solar collector is still climbing, the water will evaporate and the pressure in the pipe system will rise. In the expansion vessel is a membrane that separates the coolant and compressed air. If the pressure in the pipes rises the membrane in the vessel can expand, so the pressure can be controlled. The gas burner has two functions. It takes care of the heating in the house and thanks to a three-way valve it also can be used to increase the temperature in the boiler if there is not enough solar power to heat the pipes in the solar collector. The solar collector system is only connected to the warm water system in the house and not the heating system. In a house with floor heating it is possible to connect it to the solar boiler because low temperature heating is used.

9. Heat pipes

10. Process in the heat pipes

11. Heat conduction paste -for maximum heat exchange -prevents leaks

12. expansionvessel

13. -A vessel is a small container divided in two by a rubber membrane -one side is connected to the pipe system and contains the coolant -the other side contains compressed air. (with a valve it is possible to check and add air) -the vessel relieves the pressure in the system that could otherwise damage the plumbing -material of body: epoxy coated stainless steel -material of membrane: EPDM

14. Coolant Rubber membrane Compressed air

15. Circulator pump

16. Exploded view 1.Top Screw:Brass2.O-ring:NBR3.Nameplate:Plastic4.Motor housing:Aluminium5.Screw:Stainless steel6.Stator7.Stator jacket:Nylon8.O-ring:NBR9.Rotor Can:SST10.Bearing:Ceramic11.Rotor:Brass12.Rotor shaft:Ceramic13.Back plate:SST 14.Gasket:NBR15.Impeller:PP16.Inlet ring:SST17.Pump body:Cast iron18.Capacitor19.Terminal box:Nylon20.Screw:Stainless steel21.Cable grip:Nylon22.Terminal box:Nylon

17. Body pump cast iron: good pressure resistance

18. Impeller -PP (polypropylene) -using metal tube to connect the impeller with the ceramic rotor shaft

19. Back plate -stainless steel -ceramic bearing in the middle: high hardness, high temperature resistance

20. Rotor -brass

21. Rotor can -Stainless steel -Closes the part of the pump where water can be ( the water can’t reach the electrical part of the pump)

22. Stator

23. Terminal box -nylon -capacitor (smoothing the output of the power supplies)

24. Power range system

25. Properties circulator pump RANGE OF PERFORMANCEManual in 3 stagesPower ranges from 100W ,67W to 46WFlow rate up to 55l/minHead up to 4m LIMITS OF USE Max.water temperature: -10℃ to +110℃Max.ambient temperature: + 40℃Max.working pressure: 6 bar

26. Working of the circulator pump -if current flows trough the stator, a magnetic field is created so the rotor starts to spin -the impeller is directly connected to the rotor of the electromotor. -on the impeller are curved blades -centrifugal force makes sure the water in the impeller is pushed to the outside of the impeller -mechanical force is turned into potential and kinetic force -the kinetic force is the increased speed of the water -the potential force is the increased pressure

27. Solar boiler

28. -the tank stores the hot water until it is used -copper heat exchanger -steel body -PU isolation

29. Why would you place a solar collector? -Save 50% of the costs for warm water -Contribute to a cleaner environment

30. Simulation (Link)