Heat exchangers. Refrigerant cooled liquid coolers. Test methods for establishing the performance|Heat exchangers, Liquid-cooled systems, Cooling systems, Refrigerating systems, Refrigeration, Performance testing, Volume measurement, Identification methods, Flow measurement, Liquid flow, Flow rates, Accuracy, Measurement characteristics, Test equipment, Testing conditions, Test specimens, Formulae (mathematics), Conversion (units of measurement), Differential pressure, Pressure testing, Errors, Error correction, Graphical methods, Flow charts, Oils, Determination of content, Chemical analysis and testing