The functions of the ideal solar energy collector in the aim to generate a heat and mechanical power
can be classified by order of importance :

 

2.      To have an elevated thermodynamic output

3.  To integrate a storage device of the direct solar radiance

4.      To convert the diffuse radiance in case of cloudy cover

5.      Not to present an excessive hold to the wind

6.      To be able to juxtapose several collectors without generating shades 

7.      To use the materials and industrial solutions already tried and mastered

8.  To be easy to maintain and to recycle

PHRSD concept's answer

 

Function n°	Criterias	Levels	Flexibility	Respect	Commentary
1. To have a good thermal trapping output	The ratio PR between Trapped thermal power in confinement room ____________________________________________________ Incidental solar power on the collector	PR = 80% at 1000°C	At least	YES	90% at 1000°C scientific annex (in English)
2. To have an elevated thermodynamic output	The ratio RT between Mechanical power of the thermal machine ____________________________________________________ Thermal power provided to the machine	RT = 60%	At least	YES	While supposing 15% of irreversibility with a Stirling cycle (between 20° and 1000°C) and 8% of mechanical losses. The output increases with the temperature.
3. To integrate a storage device of the direct solar radiance	The storage must permit to stock the energy collected on one diurna durationl T	T = 12h	At least	YES	52 kg of water passing from 900°C to 1100°C can stock a diurnal production of 12h for 1000 W / m² solar flux. For a collector of 4m², 208 L are necessary. either a cube of 60 cm of side
	The global storage output  Pr = storage output x unstorage output	Pr = 80%	At least	YES	The efficiency of the machine doesn't vary meaningfully during the unstorage of 1100°C to 900°C. Careful thermal insulations of the hoses and tanks grant losses lower than 20% on 12 h.
5. Not to present an excessive hold to the wind	Diameter of the collector of the direct solar rays	D = 4 M	At more	YES	The PHRSD have a span as weak that one wants. It is sufficient to arrange a big number of it to cover a big surface.
6. To be able to juxtapose several collectors without generating shades	No mutual shade when the the sun is in shaving impact (to raise and to lie down)	/	/	YES	Thanks to the re-raising device or to rotary building in staircase.
7. To use the materials and industrial solutions already tried and mastered	Mirror thinks used already in solar to concentration, steel, alu, material usual of solar pointing. Rotating building.	/	/	YES	Solar tracking systems are extensively mastered in radio-telecommunication and radioastronomy, with classical mechanics and usual materials (steel, aluminum, heat resisting materials...). The rotating concept benefits from successful experiences on rotating buildings, notably many panoramic restaurants and a building of 11 floors in Curitiba in Brazil
8. To be easy to maintain and to recycle	Exchanges stantards of the components of the solar sensor, usual retrainings in the paths of recuperation of metals	/	/	YES	The components of the PHRSD are interchangeable, recycling them isn't new or difficult (metals or plastics at 99%)