Swamp coolers.
Fans blow over water to lower the pressure, causing evaporation to occur at room temperature.
Evaporating water absorbs heat from its surroundings without raising temperature as it undergoes a phase change. It absorbs nearly 20 times more heat than it would from being heated from 50 degrees F to 100 degrees.
The reward for mining a block is over a quarter of a million dollars these days. $250k / 4k transactions = apx $62.50 per transaction. Around $8 is from the transaction fee from the sender, the other $54 is from the block reward minted out of thin air.