The CCUTM is a revolutionary integrated pressurization and air conditioning system. The system is the result of a 15 year development and certification process, exceeding its design goals in performance, fuel savings and reliability. Conventional ECU pressurization systems pressurize the aircraft cabin utilizing bleed air that exceeds 100 psi and 600 degrees Fahrenheit. This wastes over 90% of the
energy of the huge volume of bleed air that used to pressurize the cabin. By comparison, the CCU pressurization drives a special turbocharger directly from the hot high pressure bleed air. The compressor section of the turbocharger then pressurizes the cabin with fresh outside air. Very little energy is wasted. The result is that the bleed air volume from the engines is reduced by two thirds. The engines run more than 15°C cooler, produce more horsepower at the same fuel flow, and contaminated bleed air does not enter the cabin. The special turbocharger is a Peter Schiff Aero, Inc. development featuring massive ceramic bearings, a pressurized oil supply, and an oil pressure readout at the pilot panel for maximum reliability. The original OEM ECU does not even have a pressurized oil supply. The turbocharger is dynamically balanced so that it runs virtually vibrationless. The compressor section of the turbo- charger draws in outside air to pressurize the cabin through the floor outlets. The CCU provides substantially larger pressurization air flow than the OEM ECU, so that full pressurization can usually be achieved in "problem" cabins. The pressurization air passes through a heat exchanger on its way to the cabin. The heat exchanger is cooled by RAM air from the belly scoop in the service access door at the rear bottom of the aircraft.
