An environmental control system (ECS) for an aircraft includes at least one cooling turbine, and a turbine bypass valve disposed fluidly upstream of the at least one cooling turbine. The turbine bypass valve is configured to direct a first portion of an ECS output airflow to a first air load at a first pressure via a first outlet passage, and direct a second portion of the ECS output airflow across a cooling turbine of the at least one cooling turbine and to a second air load at a second pressure lower than the first pressure for cooling thereof.

A battery thermal management system for an air vehicle includes a liquid heat exchange circuit, an air heat exchange circuit in selective fluid communication with ram air, a liquid-air heat exchanger positioned on the liquid heat exchange circuit and the air heat exchange circuit to exchange heat therebetween. The system includes at least one battery in thermal communication with the liquid heat exchange circuit. The at least one battery is configured to charge and/or discharge to heat the at least one battery above a pre-determined minimum battery temperature. A method for controlling a thermal management system for an air vehicle includes determining if at least one battery is within a thermal range of operation for heating. The method includes charging and/or discharging the at least one battery to heat the at least one battery if the at least one battery is within the thermal range of operation for heating.

A galley for an aircraft includes a frame having metal structural members having interior surfaces and panels coupled to and supported by the frame. Each panel has a core and a facesheet having an inner surface. The frame and the panels define a cart compartment configured to receive a galley cart. The interior surfaces of the metal structural members are interior of the inner surface of the corresponding facesheet. The galley includes a cooling system having a supply duct and a return duct along one or more of the panels in flow communication with the cart compartment configured to supply cooled airflow from a heat exchanger. The galley includes insulating panels located in the cart compartment covering the interior surfaces of the corresponding metal structural members.

A galley includes a cart compartment having a chamber defined by a rear wall behind the cart compartment, side walls along sides of the cart compartment, a mid-wall above the cart compartment and a bottom wall below the cart compartment. The galley includes a supply duct having an air supply device at the cart compartment having an air-through supply vent configured to be in flow communication with an air-through galley cart when received in the cart compartment to supply cooled airflow into an interior of the air-through galley cart and an air-over supply vent configured to be in flow communication with the chamber to supply the cooled airflow into the chamber for cooling an exterior of an air-over galley cart when received in the cart compartment. The galley includes a return duct having an air return device receiving the airflow from the cart compartment.

According to an embodiment, a refrigeration system that cools a compartment includes a compressor, a condenser, a condenser fan, a condenser fan motor, an evaporator, an evaporator fan, an evaporator fan motor, and tubing adapted to transport refrigerant through the refrigeration system in a circulation order from the compressor to the condenser to the evaporator and back to the compressor again. The evaporator fan may be positioned in an air inlet path to the evaporator. The evaporator fan motor may be outside a chilled air circuit of the evaporator.

An apparatus for pre-heating potable water in aircraft with waste heat includes an air to water heat exchanger having a heat exchanger housing with an inlet end that receives heat from one or more of a galley insert exhaust air inlet, a galley appliance exhaust air inlet and an air chiller exhaust air inlet. A potable water supply inlet supplies potable water to the air to water heat exchanger, which transfers heat to the potable water, and a potable water supply outlet supplies heated potable water, such as to a galley insert or galley appliance, for example. An exhaust air outlet vents cooled exhaust air from the air to water heat exchanger.

A chiller galley cart includes a plurality of walls defining an interior cavity, a supply valve defined in one wall of the plurality of walls, and a return valve defined in one wall of the plurality of walls. The supply valve and the return valve are configured to couple to a chiller positioned in the interior cavity to provide cooled airflow from the chiller galley cart. A method for cooling a demand galley cart positioned in a cart compartment of a galley includes positioning a chiller galley cart in the cart compartment having a chiller positioned in the interior cavity coupled to the supply valve and the return valve and coupling the supply valve to a supply port of the galley and coupling the return valve to a return port of the galley.

In an illustrative embodiment, an intermediate retaining assembly secures a rearmost equipment item of at least two horizontally-stacked equipment items within an aircraft galley compartment. The intermediate retaining assembly may include a manual control coupled to a first end of a rod where rotation of the manual control causes rotation of the rod. A retaining lever may engage a second end of the rod upon moving the rod to an axially extended position such that rotation of the rod causes the retaining lever to rotate between a position for securing the rearmost equipment item and a position for removing the rearmost equipment item from or inserting into the compartment. A mounting plate may be secured to an interior surface of the compartment and may have a recess for receiving the retaining lever, preventing the retaining lever from interfering with the equipment item during insertion into or release from the compartment.

A method and apparatus for drying objects in low-volume enclosed spaces is disclosed. In one embodiment, the apparatus is a hand dryer that comprises a dryer cavity including an input port, an exhaust port, and an opening for insertion of a hand having moisture thereon, an air channel, pneumatically coupling the exhaust port of the dryer cavity to the input port of the dryer cavity, the air channel substantially isolated from an interior volume of the lavatory, and a blower, communicatively coupled to the air channel, for moving air through the air channel and the dryer cavity.

A refrigeration system includes an air chiller, a liquid coolant line that couples the air chiller with a central liquid coolant cooling system of a vehicle, a storage compartment stowage area having an interior for stowing a plurality of removable storage compartments, and a duct system that circulates chilled air from the air chiller through the storage compartment stowage area. The air chiller includes a compressor, a liquid-cooled condenser, an evaporator, and a tubing to circulate refrigerant. The liquid-cooled condenser transfers heat from the refrigerant to the liquid coolant which is then cooled by the central liquid coolant cooling system of the vehicle. The air chiller is situated parallel to the storage compartment stowage area along a plane perpendicular to a direction in which the removable storage compartments are removed and replaced. The duct system circulates chilled air from the evaporator through the interior of the storage compartment stowage area.