An API plant in Baddi buys a glycol chiller for reactor jackets at −10°C. On paper, the capacity is right. On the floor, the load swings from 80 kW to 20 kW within minutes, the compressor short-cycles, and the setpoint hunts all shift. Nobody had asked about the load profile.

Most plants find out their cooling is inefficient from the electricity bill, not from the equipment. By then the damage is a decade old. HVAC systems often take a third or more of an industrial site's power, yet they get specified once, installed and forgotten.

“Require 100 TR.” That‘s all suppliers get in most cases. Which is why there are so many water chillers that are technically right and functionally wrong.