PURPOSE: To furnish equipment which cools down combustion air for a gas turbine by utilizing cold heat of LNG for fuel of the gas turbine.

CONSTITUTION: Cooling equipment 10 of air for a gas turbine has a heat transfer means 14 of one stage at least. The heat transfer means is made up of a heat exchanger tube 22 and a heat transfer medium 24 which is provided below the tube and through which air can be passed freely, and the means is so designed that it can be stacked in a plurality of stages vertically. Moreover, a sprinkling nozzle 16 disposed above the uppermost stage of the heat transfer means and sprinkling an antifreeze over the heat exchanger tube located below, an air flow passage 12 accommodating the heat transfer means and the sprinkling nozzle and making air flow so that it passes through the heat transfer medium, and a circulating pump 34 for circulating the sprinkled antifreeze to the sprinkling nozzle again from the bottom part of the air flow passage, are provided.