Abstract
The present study deals with the performance investigation of a solar pond integrated with an evacuated tube solar collector system. The experimental cylindrical solar pond system (with a radius of 0.80 m and a depth of 1.65 m) with an evacuated tube solar collector was built in Cukurova University in Adana, Turkey. The solar pond was filled with salty water of various densities to form three salty water zones (e.g. upper convective zone, non-convective zone and heat storage zone). Heat energy was collected by solar pond and evacuated tube solar collectors. The heat collected by collector was transferred to the heat storage zone of the solar pond with a heat exchanger system. Several temperature sensors connected to data acquisition system were placed vertically inside of the solar pond and inlet and outlet of the heat exchanger in the storage zone of the pond. The studies were performed using an evacuated tube solar collector integrated with the solar pond.
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Abbreviations
- A :
-
Surface area (m2)
- C :
-
Specific heat capacity (J/kg °C)
- D :
-
Declination angle
- Ι :
-
Total solar energy reaching to the pond (J)
- F :
-
Absorbed energy fraction at a region of δ-thickness
- G :
-
Solar constant
- h :
-
Solar radiation ratio
- HSZ:
-
Heat storage zone
- k :
-
Thermal conductivity (J/m °C h)
- k t :
-
Clearness index
- ṁ :
-
Mass flow (kg/s)
- n :
-
Number of the day
- NCZ:
-
Non-convective zone
- Q :
-
Heat (J)
- R :
-
Reflectivity
- S :
-
Salinity (g/kg)
- T :
-
Temperature (°C)
- UCZ:
-
Upper convective zone
- δ :
-
Thickness where long-wave solar energy is absorbed (m)
- β :
-
Incident beam entering rate into water
- γ :
-
Latitude angle
- α :
-
Tilt angle
- w :
-
Hour angle
- θ :
-
Incident angle
- χ :
-
Beam radiation tilt factor
- ρ :
-
Density (kg/m3)
- Δx :
-
Thickness of horizontal layers (m)
- bm:
-
Beam
- bt:
-
Bottom
- coll:
-
Collector
- d:
-
Declination
- dif:
-
Diffuse
- exc:
-
Exchanger
- g:
-
Ground
- i:
-
Incident
- in:
-
Inner
- out:
-
Outer
- r:
-
Reflection
- s:
-
Salinity
- sc:
-
Solar constant
- sw:
-
Salty water
- swall:
-
Side wall
- st:
-
Heat stored
- u:
-
Useful
- up:
-
Just above the zone
- z:
-
Zenith
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Acknowledgements
The authors are thankful to Cukurova University for the financial support provided for the present work (Grant No. FEF2012D20).
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Atiz, A., Bozkurt, I., Karakilcik, M., Dincer, I. (2015). Investigation of Effect of Using Evacuated Tube Solar Collector on Solar Pond Performance. In: Dincer, I., Colpan, C., Kizilkan, O., Ezan, M. (eds) Progress in Clean Energy, Volume 2. Springer, Cham. https://doi.org/10.1007/978-3-319-17031-2_20
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DOI: https://doi.org/10.1007/978-3-319-17031-2_20
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