Open Access
Table 1
Findings of previous studies on performance of parabolic dish solar cookers.
| References | Focus | Findings |
|---|---|---|
| [24] | Performance analysis of SK 14 solar cooker under Ethiopian climate | Stagnation temperature inside the pot and first figure of merit were 188 °C, and 0.22 °C/W/m2. Second figure of merit, optical efficiency and heat loss factor were 0.63, 0.39 and 51.59 W/m2 K, respectively. |
| [25] | Performance analysis of glazed and unglazed receiver of Scheffler Dish | Glazing enhanced the performance. The overall heat loss coefficient without glazing was 41.8 W/m2 K and with glazing was 6.04 W/m2 K. |
| [26] | Experimental performance analysis of an improved receiver for Scheffler solar concentrator | The overall heat loss coefficient from the stagnation test was estimated to be 109 W/m2 K |
| [27] | Receiver coating material | Silicon based system preferable |
| [28] | Parabolic dish solar cooker with aluminium black coated receiver | Efficiency of 7% was realized |
| [29] | Insulated wooden box receiver with glass cover and black painted pot placed inside | Efficiency of 39% was registered |
| [30] | Material for cooking vessel (aluminium and galvanized iron) for parabolic solar dish | Aluminium achieved higher temperature and Less cooking time |
| [31] | Comparison of two modes of the system (cooker and water heater) | Cooking/heating power and efficiency for both modes increased |
| [28] | Water and thermal oil as heat transfer fluids for parabolic trough collector | Thermal oil achieved higher temperatures than water |
| [32] | Spiral copper tube cavity receiver | Efficiency of 26.6% was determined |
| [33] | Comparative tests of SK 14 and PRINCE 15 solar concentrators of same aperture area but different geometries | PRINCE 15 performed well than SK 14. SK 14 had first figure of merit of 0.38 and second figure of merit of 0.65 where as PRINCE had first figure of merit of 0.42 and second figure of merit of 0.72 |
| [34] | Shape of receiver | Modified cavity receiver was preferable |
| [20] | Reflectors for parabolic dish concentrator | Glass mirror attained highest temperature of 96 °C in 90 minutes than polished and unpolished aluminium reflectors |
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