A highefficiency refractive secondary solar concentrator,for high temperature solar thermal applications michael f. piszczor, jr. glenn research center, cleveland, ohio robert p. macosko analex corporation, brook park, ohio prepared for the space technology and.

A labscale collector prototype is built and tested using a hightemperature heat transfer fluid loop at temperatures up to 210 c. the results demonstrate the proposed collector can operate at the desired temperature range without relying on active solar concentrator and evacuated tubes.

A metamorphic ga 0.44 in 0.56 p ga 0.92 in 0.08 as ge 3junction solar cell from this research has reached a record 40.7 efficiency at 240 suns, under the standard reporting spectrum for terrestrial concentrator cells (am1.5 direct, lowaod, 24.0 wcm 2, 25 c), and experimental latticematched 3junction cells have now also achieved over.

A prototype concentrator photovoltaic (cpv) module with high solar concentration, an added lowcost solar cell, and an adjoining multijunction solar cell is fabricated and experimentally demonstrated. in the present cpv module, the low cost solar cell captures diffuse solar radiation penetrating the concentrator lens and the multijunction cell captures concentrated direct solar radiation.

Additionally, the conjunction of linear fresnel reflector and segmented parabolic secondary concentrator leads to high optical efficiency of 76.4 and a coefficient of flux variation value of 0.13. wang et al. 13 proposed a bandfocus fresnel lens solar concentrator to increase the uniformity of solar energy concentration and optical.

Concentrator cell light iv and efficiency independently verified by j. kiehl, t. moriarty, k. emery nrel first solar cell of any type to reach over 40 efficiency spectrolab metamorphic gainp gainas ge cell v oc 2.911 v j sc 3.832 acm2 ff 87.50 v mp 2.589 v efficiency 40.7 2.4 240 suns (24.0 wcm2) intensity.

Concentrator cells have the potential to reduce the usage of semiconductor material while producing high efficiency and more power density in a cell. silicon solar cells now provide a unique opportunity for lowcost concentrator systems that are suitable for low to medium (2ampx201320x) concentration because cell technology and screenprinted contacts have improved considerably.

Various structural patterns are used to control light properties during propagation. in particular, when light is trapped and concentrated onto solar cells, they generate more electricity than without concentration. since the sun moves continuously, a compound parabolic concentrator (cpc) can enhance the efficiency of solar cells by lighttrapping and concentration because a cpc.

However, manufacturing devices with this approach is not easy, as high yield, lowresistance wafer bonding is notoriously tricky. figure 4. (a) measured and simulated external quantum efficiency (eqe) for the gaas doublejunction cell. (b) measured and simulated eqe spectra for the inp triplejunction cell.

Design, fabrication and test of a high efficiency refractive secondary concentrator for solar applications common to many of the space applications that utilize solar thermal energy such as electric power conversion, thermal propulsion, and furnaces, is a need for highly efficient, solar concentration systems. an effort is underway to develop the refractive secondary concentrator, which uses.

Efficiency in solar photovoltaic systems under high temperature conditions nuru safarov 1, , sevinc orucova 2, gurban ahmadov 3, etibar rzazadeh 4, samira cafarova 4 1department of electronics and telecommunications engineering, khazar university, baku, azerbaijan.

High efficiency four junction iiiv bismide concentrator solar cell design, theory, and simulation in this paper, the efficiency of a novel gainp 2 gaasgaas 0.94 bi 0.0583 ge concentrator multijunction solar cell has been investigated by simulation using indigenously written code for matlab software.

High efficiency triplejunction (tj) pv assembly made of gainpgainasge and area of 0.0316 0.0296 m 2 with active surface of 0.0001 m 2 was integrated to the hcpv system.

High throughput semiconductor deposition system, us patent 10192740b2 (2019) multijunction gainpgaas solar cells grown by hydride vapor phase epitaxy, progress in photovoltaics (2018) building a sixjunction inverted metamorphic concentrator solar cell, journal of photovoltaics (2018).

Highefficient lowcost pv modules, making use of novel efficient solar cells (based on csi or iiiv materials), and low cost solar concentrators are in the focus of this book. recent developments of organic photovoltaics, which is expected to overcome its.

International journal of renewable energy research a. kowsar and s.f, vol.8, no.3, september, 2018 high efficiency four junction iiiv bismide.

The efficiency of a concentrator solar cell is performed using acetone as the working liquid in the gravitydependent heat pipe. it seems possible, for passive cooling at high concentrations, to design simple heat pipes capable of effectively and passively cooling solar cells exposed to concentrations up to 500 suns, which is due to thermal.

Journal of energy in southern africa vol 17 no 2 may 2006 27 abstract because of rich solar and oil reserves in the absheron peninsula (latitude 40 26 n and longitude 49 46 e) of azerbaijan, application of solar energy in the oil treatment process in the oil fields was considered. an experimental plant with double.

Journal of physics, 2, p. 1517 (2003) calculation method and results of electricity production by solar photoelectrical devices for the azerbaijan climatic regions and zones. journal power engineering problems 1, p. 2027 (2003),.

Journal search new in the electronic journals library (ezb) 1ao.5.2 bandgapengineered architectures for highefficiency multijunction concentrator solar cells. king, r.r. boca, a. hong, high efficiency on inversed emitter ntype silicon solar cell adapted to a wide range of resistivity.

Journal search new in the electronic journals library (ezb) 2cv.1.32 comparative experimental characterisation between asymmetric compound parabolic photovoltaic concentrator and flat nonconcentrating system. mallick, t. k. eames, p. c 2cv.3.3 the way to highefficiency, low cost solar cells through thin wafer slicing by means of.

A highefficiency refractive secondary solar concentrator for high temperature solar thermal applications a refractive secondary solar concentrator is a nonimaging optical device that accepts focused solar energy from a primary concentrator and redirects that light, by means of refraction and total internal reflection (tir) into a cavity where the solar energy is used for power andor.

To prove further the feasibility of developing the dish type solar thermal power generating system in china, an experimental bench were built in the iee, cas, and the unique solution were explored for the economic concentrator, the high precision tracing control system and high efficiency energy converter other than stirling unit.

In the paper the sun tracking systems usage for highpotential concentrators and solar pv to be directed to the sun have been studied due to the cographical location of absheron peninsula. keywords sun tracking system, azimuth, zenith, solar energy plant, solar pv.

Articleosti_1470408, title highconcentration planar microtracking photovoltaic system exceeding 30 efficiency, author price, jared s. and grede, alex j. and wang, baomin and lipski, michael v. and fisher, brent and lee, kyutae and he, junwen and brulo, gregory s. and ma, xiaokun and burroughs, scott and rahn, christopher d. and nuzzo, ralph g. and rogers, john a.

Tokyo, j key points. researchers successfully used electricity obtained from highefficiency concentrator photovoltaic cells (with an output of 470 w), currently under research and development at the university of miyazaki, to electrolyze water, converting 18.8 of the solar energy (daily average) to hydrogen energy.

Journal info rmation publish with by increasing the area of the side of the concentrator, a high concentration factor is achieved at the expense of the geometric extraction efficiency due to.

The development of highperformance solar cells offers a promising pathway toward achieving high power per unit cost for many applications. various singlejunction solar cells have been developed and efficiencies of 29.1, 26.7, 23.4, 22.1, and 21.6 (a small area efficiency of 25.2) have been demonstrated 1 1. m.

5 days can iran and azerbaijan finally published in the journal nano nrel is looking to highefficiency concentrator cells bolstered by lenses that magnify the power of the sun are.

K. nishioka, t. takamoto, t. agui, m. kaneiwa, y. uraoka, and t. fuyuki, evaluation of ingapingaasge triplejunction solar cell and optimization of solar cells structure focusing on series resistance for highefficiency concentrator photovoltaic systems, solar energy materials and solar cells, vol. 90, no. 9, pp. 13081321, 2006.