How to Manually Calculate Chiller Capacity for ...
Apr 04, 2019 · Q = 500 BTU per gallon per hour X 40 GPM x 12 ΔT = 240,000 BTU per hour. Convert result into tons of chiller capacity. Divide Q (BTUs per hour) by 12,000 (the number of BTUs in one ton of cooling capacity). This yields the chiller capacity required to handle the process heat load in tons per hour: Example: 240,000/12,000= 20 tons/hr.