Best Practices Manual HVAC Chillers : refrigeration and air conditioning system, ozone depletion and global warming, types of compressor and capacity control, evaporators, condensers, expansion valves, sub-cooling, superheating, secondary coolants, specific power consumption of vapor absorption systems, cooling towers, operating at higher evaporator temperature, accurate measurement and control of temperature, reduction in heat loads, reducing ventilation heat load, energy saving in low relative humidity air conditioning, inter-fuel substitution, electricity savings by use of absorption chillers, thermal storage for maximum demand control, energy efficiency issues, refrigeration load estimation, system design, sizing and selecting the right refrigeration machine.