IIAR-Ammonia Refrigeration Education And Training Program

IIAR(International Institute of Ammonia Refrigeration)|1995|5 Modules|PDF|Each Module (~15 pages)(~5 MB)

Module1: This module examines applications of ammonia in the refrigeration industry. It reviews the molecular structure and basic chemical properties of ammonia, including an explanation of the change of state and the heat transfer process. In addition, this module explores the relationship between temperature and pressure.( Download >>   Up-4ever OR 4shared OR file-upload OR Suprafiles )

Module2: This module examines the major components that makeup ammonia refrigeration systems including direct expansion, recirculating, and indirect systems. This module also explores the role of pressure reduction devices in the system.( Download >>  Up-4ever OR 4shared OR file-upload  OR Suprafiles )

Module3: This module focuses on evaporators. It explores the inner working of air units and liquid chillers, including shell & tube and plate & frame evaporators. This module examines evaporator capacity and factors that impact evaporator operation. It also explores the pressure of the ammonia as it flows through the evaporator and the temperature difference between the liquid ammonia and the air, or secondary coolant, being cool.( Download >>  Up-4ever OR 4shared OR file-upload OR Suprafiles )

Module4: This module examines the operation of compressors commonly used in the ammonia refrigeration industry. the reciprocating compressor, the rotary vane compressor, and the screw compressor. This module also discusses volumetric efficiency, swept volume and compression ratio.( Download >>    Up-4ever OR 4shared OR file-upload OR Suprafiles )

Module5: This module explores air-cooled condensers, water cooled condensers, and evaporative condensers. It also outlines the factors that may impact a condenser's efficiency, and heat transfer capability including the surface area of the heat transfer material, the conductive capability of the heat transfer surface, the difference in temperature between the cooling agent and the ammonia vapor and the rate and direction of flow of both the ammonia and cooling agent.( Download >>   Up-4ever OR 4shared OR file-upload OR Suprafiles )