Even though the air mass flow rate of 0.035 kg m2 s1
reached in the drying chamber is similar to that recommended
by Karim and Hawlader (2004) for drying agricultural
products, it was not sufficient to reach an acceptable
efficiency. As such, the system should be modified to
include a fan at the solar collector air inlet in order to
increase airflow speed. Mechanically promoting heat
removal from the absorbing plate will decrease energy loss
resulting from convection and conduction, and reduce the
need for use of the auxiliary LPG air heating system.