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A cylindrical dioptrics, nonfocalising solar collector

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Lettere al Nuovo Cimento (1971-1985)

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Abbreviations

A1:

aperture of the dioptrics

A2:

total aperture

b :

\(2\bar hd/\dot mc_p \)

c :

\(2\bar hd/\dot mc_p \)

c p :

specific heat

C :

distance between the dioptrics

d :

maximum diameter of the conduit

D :

day of the month

h :

liminar heat exchange coefficient

h′ :

heat exchange losses coefficient

H(12):

height of the Sun at noon

J :

number of parallel dioptrics in the collector

L :

altitude

\(\dot m\) :

mass flow rate

M :

month

N :

refractive index

p :

perimeter

PH1:

latitude

R1:

radius of the dioptric

R2:

radius of the boiler

S :

day of the year

t a :

ambient temperature

t f :

temperature of the fluid

t fi :

inlet temperature of the fluid

t fo :

outlet temperature of the fluid

T1:

sunrise time

T2:

sunset time

T w :

temperature of the receiver

x :

axial length

Φ:

solar energy flux on the receiver

References

  1. G. Russo:Progettazione di impianti per la climatizzazione solare. Programmi di calcolo. Simulazione delle condizioni di esercizio; determinazione dei parametri inerenti la solarità; calcolo dell'irraggiamento, IFPT/75.

  2. A. Russo:Conversione statica dell'energia solare. Collettore piano a liquido monofasico a diottri cilindrici. Programmi di calcolo per il progetto ottico del collettore, IFPT/77.

  3. A. Russo andG. Russo:Heat and mass transfer analysis for flat-plate solar collectors, in preparation.

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Authors and Affiliations

  1. Faculty of Engineering, Institute of Experimental Physics, Turin Polytechnic, Turin

    F. Demichelis, A. Russo & G. Russo

Authors
  1. F. Demichelis
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  2. A. Russo
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  3. G. Russo
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Demichelis, F., Russo, A. & Russo, G. A cylindrical dioptrics, nonfocalising solar collector. Lett. Nuovo Cimento 20, 503–506 (1977). https://doi.org/10.1007/BF02789670

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  • DOI: https://doi.org/10.1007/BF02789670

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