Patent ID: 8813513

Claim:
A cooling system for use on aircraft, comprising: an onboard food cart; a galley plenum configured to receive said onboard food cart, said galley plenum including a galley plenum heat exchanger for transferring heat from the galley plenum to a first working fluid, a proportional flow valve configured to control the flow of said first working fluid from said galley plenum heat exchanger within said galley plenum to an expelling heat exchanger, said first working fluid remaining in a liquid phase at all times, 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, 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; a chiller unit circulating a second working fluid through a condenser and through an evaporator associated with said expelling heat exchanger, said chiller unit including a second working fluid pump connected between said evaporator and said condenser, 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; and a display configured to indicate a status of said first working fluid pump, said proportional flow valve and said blower, said display including an interface for controlling said first working fluid pump, said proportional flow valve, and said blower in order to control the temperature within said galley plenum.