I have around 7 gallons of water in a vessel with dimensions 0.3m by 0.3 m by 0.4m. Which of the following should be the fastest way to cool the water from around 100 degrees Celsius to room temperature? 1. Using cooling fans mounted on the top. 2. Using Coolworks Microchiller (not really sure is this pulls down temprature by so many degrees.) 3. Using a chiller with separate pre-chiller. A heat exchanger if u might say. I have space restrictions as well of 0.3 m by 0.3 m by 0.2 m in which to fit the cooling part. Any help or further ideas or suggestions welcome!