Patent ID: 8495887

Claim:
A system for cooling of onboard food carts on aircraft, comprising: a first working fluid loop configured to circulate a first working fluid, said first working fluid loop including a galley plenum including a galley plenum heat exchanger for transferring heat from the galley plenum to said first working fluid, a valve configured to control the flow of said first working fluid through said galley plenum heat exchanger, a first working fluid pump configured to pump said first working fluid to said galley plenum heat exchanger, said first working fluid pump being located remotely from said galley plenum heat exchanger, an expelling heat exchanger, said first working fluid pump being configured to pump said first working fluid through said expelling heat exchanger, and a blower for blowing air through said galley plenum heat exchanger and said galley plenum; and a second working fluid loop circulating a second working fluid through a condenser and through an evaporator associated with said expelling heat exchanger of said first working fluid loop, said second working fluid loop including a second working fluid pump connected between said evaporator and said condenser, and an expansion valve connected between said condenser and said evaporator, said second working fluid pump being configured to pump said second working fluid through said condenser to cool said second working fluid and through said evaporator to cool said first working fluid in said expelling heat exchanger of said first working fluid loop.