Question List for Test 2 on Solar Systems
1. Please define the operational principle of a thermal mass wall.
2. Please define the operational principle of a Trombe wall.
3. Please define the operational principle of a Thermosyphon.
4. Please draw a sketch of a DHW system with solar collectors and a boiler. Explain the
operation in a few sentences.
5. Please draw a sketch of a solar DHW system with two hot water tanks. Explain the
operation in a few sentences.
6. Please draw a sketch of a solar DHW system with external heat-exchanger. Explain
the operation in a few sentences.
7. Please draw a sketch of a solar DHW system with two collector fields. Explain the
operation in a few sentences.
8. Please draw a sketch of a DHW system with solar collectors and an electric water
heater. Explain the operation in a few sentences.
9. Please draw a sketch of a pool heating system with solar collectors and a boiler.
Explain the operation in a few sentences.
10. Please draw a sketch of a solar DHW and building heating system. Explain the
operation in a few sentences.
11. Please explain the frost protection of solar systems. Compare the water-glycol
solution to water as heat transfer medium. Is adding glycol to the heat transfer
medium the only way to prevent frost?
12. Please explain the drain-back solar system.
13. What do you have to consider when dimensioning expansion vessels and safety relief
valves in solar systems? Please explain what the stagnation of a solar system means.
14. What do you know about solar air heaters?