2020 ASHRAE TECHNOLOGY AWARD CASE STUDIES Indirect Evaporative Cooling Drives Data Center Efficiency Kao Data maintains the internal environmental conditions to ASHRAE's most stringent Class A1 Recommended Environment, without the use of any mechanical refrigeration. BY PAUL FINCH, C.ENG., MEMBER ASHRAE 40 ASHRAE JOURNAL ashrae.org J U N E 2020https://www.ashrae.org/