The invention concerns an avionics bay (1) for the installation of at least one electrical module (M), comprising a fluid cooling system and a housing (2) that is complementary to the electrical module (M) and that comprises an open front face (21) through which the module (M) can be removably installed inside said housing (2), and a rear face (20) on which there are arranged electrical connectors suitable for being connected to the electrical module (M), characterised in that the fluid cooling system comprises a cold plate (3) that is disposed on the rear face (20) of the housing (2) that is suitable for cooling the electrical module (M) when said electrical module (M) is installed inside the housing (2).

A cooling system for a vehicle can include a coolant loop having a coolant therein and configured to be in thermal communication with a heat load to receive heat from the heat load, a refrigeration system comprising an evaporator in thermal communication with the coolant loop to receive heat from the coolant loop, and a condenser configured to be in thermal communication with ram air to remove heat from the refrigeration system, an inline ram air heat exchanger disposed in a ram air stream of the condenser, and a ram air cooling branch in fluid communication with the coolant loop and configured to direct coolant to the ram air heat exchanger to cool the coolant.

A cooling system for a vehicle can include a coolant loop having a coolant therein and configured to be in thermal communication with a heat load to receive heat from the heat load, a refrigeration system comprising an evaporator in thermal communication with the coolant loop to receive heat from the coolant loop, and a condenser configured to be in thermal communication with ram air to remove heat from the refrigeration system, an inline ram air heat exchanger disposed in a ram air stream of the condenser, and a ram air cooling branch in fluid communication with the coolant loop and configured to direct coolant to the ram air heat exchanger to cool the coolant.