An experimental system was established for non-packed heat source tower system. The heat absorption efficiency of the heat source tower was studied under the different air inlet positions

spray nozzle positions

air dry-bulb temperatures

relative humidity

air flow rates

and solution inlet temperatures. The results show that the position of air inlet and spray nozzle has obvious impact on heat absorption efficiency. The heat absorption efficiency of down-spray heat source tower is better than that of the up-spray tower. There was no significant correlation between heat absorption efficiency and dry-bulb temperature

while with the air dry-bulb temperature increases the total amount of heat absorbed from the air increases. The heat absorption efficiency increases with the air flow rate and relative humidity increase. With the inlet solution temperature increasing

the heat absorption efficiency is obviously improved. Compared with other parameters

the inlet solution temperature has the greatest impact on heat absorption efficiency.