Stagnation temperature test of solar cooking systems.
|Insulated (IR)||Oil-Filled (OFR)||Air-Filled (AFR)||Conventional (CR)|
|Ambient temperature (°C)||31.32||32.19||32.04||32.23|
|Maximum wind speed (m/s)||0.72||0.91||0.61||0.68|
|Calculated average horizontal insolation during stagnation test (W/m2)||496.19||491.12||480.16||468.94|
|Measured horizontal insolation at stagnation (W/m2)||470.74||431.71||201.88||557.45|
|Average beam radiation (W/m2)||398.60||421.76||417.45||408.13|
|Maximum absorber temperature during stagnation test (°C)||124.22||90.07||119.44||92.69|
|Maximum air temperature during stagnation test (°C)||153.96||98.75||141.24||128.19|
|Standard stagnation temperature (SST) (°C)||159.14||100.18||154.72||109.59|
|First figure of merit (W/m2 K)||0.26||0.15||0.54||0.17|
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