Mathematical Model for Energy and Exergy-Based Simulation of Triangular Solar Energy Extractor for Air Heating Applications

Table 1

Particulars of reported research on artificially roughened triangular duct solar air heater.

Roughness design	Heat transfer and friction factor analysis	First law based energy and effective thermal performance	Second law based exergy analysis
Dimple shape	Goel et al. [9]	✕	✕
Straight semi-circular rib	Kumar et al. [10]	Kumar et al. [22]	Kumar et al. [22]
Straight circular rib	Kumar et al. [11]	✕	✕
Straight rectangular rib	Kumar et al. [12]	✕	Nidhul et al. [21]
Inclined circular rib	Bharadwaj et al. [13]	✕	✕
Inclined broken square rib	Jain et al. [18]	✕	✕
V rib	Nidhul et al. [19]	✕	Nidhul et al. [19]
V rib with multiple gap	Misra et al. [20]	✕	✕