the bottom portion 520B of the second evaporative cooler 520 due to the temperature of the waterflow 10 therethrough. As such, it can be appreciated that there is a temperature gradient along the longitudinal direction, i.e. vertical direction, of the second evaporative cooler 520 such that the temperature of the airflow 20 and waterflow 10 therethrough gradually reduces from the top portion 520T of the second evaporative cooler 520 to its bottom portion 520B. It can also be appreciated that the temperature of the waterflow 10 exiting the first evaporative cooler 510 may be the same or nearly the same as the temperature of the waterflow 10 entering the second evaporative cooler 520. As the waterflow 10 flows downwardly from the first evaporative cooler 510 to the second evaporative cooler 520, the waterflow 10 may be evaporatively cooled by the airflow 20 flowing in the opposite direction. Hence, the temperature of the waterflow 10 entering the second evaporative cooler 520 may be lower than the temperature of the waterflow 10 exiting first evaporative cooler 510. It can be appreciated that due to the temperature gradient of the airflow 20 exiting from the second evaporative cooler 520, the average temperature of the airflow 20 entering the first evaporative cooler 510 is always lower than the temperature of waterflow 10 exiting the first evaporative cooler 510, regardless the external conditions of the water and air, i.e. temperature of water entering the cooling apparatus 500 from the condensers, and the temperature and humidity of the ambient air. [0046] First evaporative cooler 510 may also be sectioned into a plurality of portions, e.g. a left side portion 510L, a right side portion 5 1OR and a centre portion 510C between the left side portion 510L and the right side portion 5 1OR. Plurality of guides 560 may be adapted to guide airflow 20 from one portion of the second evaporative cooler 520 to one portion of the first evaporative cooler 510. For example, the plurality of guides 560 may be adapted to guide the airflow 20 from the top portion 520T of the second evaporative cooler 520 to one of the left side portion 510L and right side portion 510R, the airflow 20 from the bottom portion 520B to the centre portion 510C. In this way, the airflow 20 from the plurality of portions of the second evaporative cooler 520, which have varying temperatures, e.g. warmest at the top portion 520T and coolest at the bottom portion 520B, may not be mixed as it flows from the second evaporative cooler 520 to the first evaporative cooler 510. Plurality of guides 560 may include a plurality of bottom guides 560B disposed between the second evaporative cooler 520 and the deflector 530 to guide the airflow 20 from the second evaporative cooler 520 to the deflector 530. Plurality of guides 560 may include a plurality of top guides 560T disposed between the