Here are the classes, structs, unions and interfaces with brief descriptions:

CAirFilter	Air filter
CBasicCooler	Basic cooler
CBasicDiscreteInstrument	Basic discrete instrument
CBasicHeater	Basic heater
CBladeDamper	Blade damper
CCentrifugalFan	Centrifugal fan
CCooler	Cooler
CHeater	Heater
CHeatExchanger	Heat exchanger
CHeatRecoveryWheel	Heat recovery wheel
CMotorActuator	Motor actuator
CPump	Pump
CSymbolCanvas	Symbol canvas
CTank	Tank
CValve	Valve