Optimum fin designs for downflow reboilers
Orbital type freezing apparatus and method
Orbiting rotary compressor with adjustable eccentric
Organ preservation apparatus
Organic hydride/metal hydride heat pump
Organizer for bagged foodstuffs and the like
Outdoor coil unit for heat pump
Outdoor unit construction for an electric heat pump
Outdoor unit for air conditioner and operation method thereof
Overhead refrigeration system
Oxygen boiler
Oxygen reduction system and condenser apparatus with...