Performance of a low cost solar paraboloidal dish steam generating system

Kaushika, N.D.; Reddy, K. S.

doi:10.1016/s0196-8904(99)00133-8

Cited by 144 publications

(51 citation statements)

References 10 publications

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“…The heat loss rate from the lower part of the receiver tube which is not insulated, due to the external forced convection of wind [5] …”

Section: Solar Receiver Modelmentioning

confidence: 99%

“…Sendhil Kumar and Reddy [4] compared different types of cavity receivers numerically and suggested that the modified cavity receiver may be preferred in a solar dish collector system. The total heat loss rate from the modified cavity receiver due to convection, radiation and conduction, is a function of the receiver geometry [5]. A numerical investigation of natural convection heat loss [6], an inclusion of the contribution of radiation losses [7] and an improved model for natural convection heat loss [8] was presented for the modified cavity receiver.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimum performance of the small-scale open and direct solar thermal Brayton cycle at various environmental conditions and constraints

Roux

Bello‐Ochende

Meyer

2012

Energy

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The Brayton cycle's heat source can be obtained from solar energy instead of the combustion of fuel. The irreversibilities of the open and direct solar thermal Brayton cycle with recuperator are mainly due to heat transfer across a finite temperature difference and fluid friction, which limit the net power output of such a system. In this work, the method of total entropy generation minimisation is applied to optimise the geometries of the receiver and recuperator at various steady-state weather conditions. For each steady-state weather condition, the optimum turbine operating point is also found. The authors specifically investigate the effect of wind and solar irradiance on the maximum net power output of the system. The effects of other conditions and constraints, on the maximum net power output, are also investigated. These include concentrator error, concentrator reflectivity and maximum allowable surface temperature of the receiver. Results show how changed solar beam irradiance and wind speed affect the system net power output and optimum operating point of the micro-turbine. A dish concentrator with fixed focal length, an off-the-shelf micro-turbine and a modified cavity receiver is considered.

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“…The heat loss rate from the lower part of the receiver tube which is not insulated, due to the external forced convection of wind [5] …”

Section: Solar Receiver Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimum performance of the small-scale open and direct solar thermal Brayton cycle at various environmental conditions and constraints

Roux

Bello‐Ochende

Meyer

2012

Energy

View full text Add to dashboard Cite

show abstract

“…The test results from this model shows temperature above 200 •C on average sunny and cloud free day. N.D Kaushika and K.S Reddy [8] present the design and performance characteristics of a low cost solar steam generating system which incorporates recent design of parabolic dish technology. Preliminary field measurements and cost, as well as performance analyses of the system, indicate a solar to steam conversion efficiency of 70±80% at 4508C and a collector system cost of Rs 8000±9000/m2 (US$1=Rs, 40.0).…”

Section: Introductionmentioning

confidence: 99%

Thermal Study of Solar Parabolic Concentrator

Ghazouani¹,

Skouri²,

Bouadila³

et al. 2016

IOSR

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“…Harris & Lenz (1985) found the thermal and optical losses from a cavity solar receiver were less than other types of receiver. Kaushika and Reddy (2000) designed the modified cavity receiver to perform minimum heat loss from the receiver with www.intechopen.com Heat Transfer Performances and Exergetic Optimization for Solar Heat Receiver 305 fuzzy focal dish concentrators. Steinfeld & Schubnell (1993) investigated the solar cavity receiver, and educed the optimum aperture size and operating temperature by a semi empirical method.…”

Section: Introductionmentioning

confidence: 99%