Performance of A New Model of Air Heating System: Experimental
Investigation
الباحث الأول:
Hassanain Ghani Hameed
الباحثين الآخرين:
Hayder Diabil
Muntadher Mohammed Ali Saeed
المجلة:
Journal of Mechanical Engineering Research and Developments
تاريخ النشر:
None
مختصر البحث:
In the current paper, a new design for an air solar heater is tested and its results are compared with the
corresponding results of a conventional air solar heater (two-pass black flat plate). Experimental measurements have
been performed under …
In the current paper, a new design for an air solar heater is tested and its results are compared with the
corresponding results of a conventional air solar heater (two-pass black flat plate). Experimental measurements have
been performed under Najaf city/Iraq (latitude and longitude are 32º 03 N and 44º 19 E) prevailing weather conditions.
The new design is a longitudinal aluminum radiator placed inside a fully isolated bed. The radiator is covered with
black paint to increase the heat absorption of the solar radiation and then distribute it regularly to the passing air. In
addition to test the activity of the new system, the current experiments shed a light on influence of the air mass flow
rate on the air outlet temperature, thermal efficiency and pressure drop. Three air mass flow rates are selected: 0.0046,
0.0092 and 0.0138 kg/s. The results show that increasing in the air mass flow rate leads to decrease in the air outlet
temperature and increase of the pressure drop and thermal efficiency for both current solar collectors. Moreover, the
radiator air solar heater is 18.62% more efficient at the maximum point compared to the conventional one with 0.0138
kg/s leading to obtain 32.66% as the maximum enhancement in the thermal efficienc
