The Intake Air Refrigeration Unit (IAR) is a mechanical cooling system replacing the ice tower previously used with ASTM research and motor method octane testing engines. It provides chilled and dehumidified air to either laboratory or on-line octane analysis engines eliminating the need for an ice machine and the physical handling of ice. It also handles the fuel chilling requirements for laboratory engines through circulating available coolant through the carburetor cooling devices.
The Intake Air Refrigeration Unit comes with the following components:
Enclosure- A compact, steel, modular unit for housing the equipment.
Coolant Chiller- An air-cooled refrigeration unit with sealed compressor and thermostatic control.
Circulating Pump - A centrifugal pump with continuous-duty motor in an integral coolant reservoir.
Dehumidification Chamber - A tube-and-fin heat exchanger unit assembled in a styrofoam insulated plenum. A water/ethylene glycol coolant is circulated through the exchanger and the engine air passes over the fins for dehumidification at approximately 32ºF to 35ºF. The plenum includes a condensate pan and drain line.
Air Filter - An automotive type paper filter cartridge cleans the engine air before it enters the plenum.
Fuel Cooling Accessories - Two hoses equipped with quick-disconnect couplings for fast on/off connection to the carburetor cooling chambers are provided along with mating connectors for installation on the carburetor.
Features
Dehumidifies air for the ASTM engine for research and motor methods
Filters ambient air
Dual-function air humidity control ad carburetor fuel cooling
Low maintenance
Eliminates the need for and handling of ice