Thermal Analysis Of An Evacuated Tubular Collector Using Fourth Order Runge-Kutta Methods And Validation With Experimental Data
| dc.contributor.author | Thominathan, Gyanaprakash | |
| dc.date.accessioned | 2016-10-21T08:39:55Z | |
| dc.date.available | 2016-10-21T08:39:55Z | |
| dc.date.issued | 2010-04 | |
| dc.description.abstract | This thesis presents the thermal performance of the evacuated tubular collectors. Ener$y balance inside the tubular collector has been investigated theoretically and expehmentally. A transient one-dimensional mathematical model was developed allowing the prediction of conductive heat transfer within the envelope tube, conv~ctive and radiation heat transfer from the envelope tube towards the receiver and ~e working fluid. The governing differential equations were solved numerically via the fourth order Runge-Kutta method using MA TLAB 7.0 to compute the tran$ient one-dimensional model of the evacuated tubular collectors. A transparent single tube collectors (STC) and transparent evacuated tube coll~ctors (ETC) were fabricated using glass in concentric cylinder form and performance of this tubular collector was measured under sunlight. The effectiveness of liquid absorptivity was investigated by adding black ink in the water at various concentrations between 0.0025% to 0.025%. The computed mathematical models were verified both analytically and experimentally. The temperature profiles of water for different concentrations of black ink, flow rate and the solar flux were determined in the present studies. A iparametric variation study was used to illustrate the effect of varying collector p~rameters. Non dimensional equations were developed and major parameters that affect the collector performance were obtained. This study provides insight into the sifnificant design parameters for an evacuated tubular collector. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/2786 | |
| dc.subject | The thermal performance of the | en_US |
| dc.subject | evacuated tubular collectors | en_US |
| dc.title | Thermal Analysis Of An Evacuated Tubular Collector Using Fourth Order Runge-Kutta Methods And Validation With Experimental Data | en_US |
| dc.type | Thesis | en_US |
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