TY  - JOUR
EP  - 3560
SN  - 20500505
PB  - John Wiley and Sons Ltd
N1  - cited By 12
SP  - 3544
TI  - Sensitivity analysis of a parabolic trough concentrator with linear V-shape cavity
AV  - none
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092555468&doi=10.1002%2fese3.763&partnerID=40&md5=742be9fe6f7f7068c51ed332d4795757
JF  - Energy Science and Engineering
A1  - Rafiei, A.
A1  - Loni, R.
A1  - Ahmadi, M.H.
A1  - Najafi, G.
A1  - Bellos, E.
A1  - Rajaee, F.
A1  - Askari Asli-Ardeh, E.
VL  - 8
Y1  - 2020///
N2  - In the present investigation, a solar parabolic trough concentrator (PTC) with a linear cavity was examined by using a developed numerical model. More specifically, a V-shape cavity receiver was studied in this work as a new and alternative design. The use of a cavity in a PTC is a very promising idea because it leads to high efficiency and to low investment cost. Up today, the emphasis in the use of cavities is given in dish concentrators and so there is a need for investigation of cavities also in linear concentrators. Different dimensional and operational parameters of the PTC with a V-shape cavity were considered. More specifically, the position, aperture area, and the tube diameter of the V-shape cavity, solar irradiance, inlet temperature level, and mass flow rate were evaluated based on sensitivity analysis. The results revealed that the highest optical performance was attained when the cavity was placed at the PTC focal line. Moreover, it is found that there is an optimum cavity aperture area to determine the greatest thermal efficiency. For the optical errors of 5, 10, 15, 20, and 35 mrad, the optimum cavity aperture wide was calculated at 5, 5, 6, 7, and 8 cm, respectively, with the tracking error to be 0°. The highest thermal performance has found when the collector operates with low inlet temperature, high flow rate, high solar irradiation level, and small cavity tube diameter. © 2020 The Authors. Energy Science & Engineering published by the Society of Chemical Industry and John Wiley & Sons Ltd.
IS  - 10
KW  - Concentration (process); Cooling systems; Efficiency; Solar concentrators; Solar radiation
KW  -  Alternative designs; Dish concentrator; Linear concentrator; Operational parameters; Optical performance; Parabolic trough concentrators; Thermal efficiency; Thermal Performance
KW  -  Sensitivity analysis
ID  - scholars12679
ER  -