Chiller Systems
Waste Heat Fired Absorption Chillers - Steam
General
Waste steam from a cogeneration system obviously produces the same level of cooling as boiler generated steam, Low pressure waste steam sources (say 14 psig) typically require 18-20 pounds of steam per hour to produce one ton of cooling in a single-stage absorption chiller. That performance improves to 10-12 pounds per ton-hour of steam when steam pressures are in the 50 to 130 psig range and used in a 2-stage (double effect) absorption chiller.
Steam absorption chillers are nominally rated as follows:
- Single stage: 9 psig at generator flange
- Two stage: 114 psig steam input pressure.
