R11 -- Refrigerant-Control Devices - (SI)

Control of refrigerant flow, temperatures, pressures, and liquid levels is essential in any refrigeration system. This chapter describes a variety of devices and their application to accomplish these important control functions. Most examples, references, and capacity data in this chapter refer to the more common refrigerants. For further information on control fundamentals, see Chapter 7 of the 2009 ASHRAE Handbook--Fundamentals and Chapter 46 of the 2007 ASHRAE Handbook--HVAC Applications.

Chapter Table of Contents

CONTROL SWITCHES
Pressure Switches
Temperature Switches (Thermostats)
Differential Switches
Float Switches
CONTROL SENSORS
Pressure Transducers
Thermistors
Resistance Temperature Detectors
Thermocouples
Liquid Level Sensors
CONTROL VALVES
Thermostatic Expansion Valves
Electric Expansion Valves
REGULATING AND THROTTLING VALVES
Evaporator-Pressure-Regulating Valves
Constant-Pressure Expansion Valves
Suction-Pressure-Regulating Valves
Condenser-Pressure-Regulating Valves
Discharge Bypass Valves
High-Side Float Valves
Low-Side Float Valves
Solenoid Valves
Condensing Water Regulators
Check Valves
Relief Devices
DISCHARGE-LINE LUBRICANT SEPARATORS
CAPILLARY TUBES
Adiabatic Capillary Tube Selection Procedure
Capillary-Tube/Suction-Line Heat Exchanger Selection Procedure
SHORT-TUBE RESTRICTORS

Citation: 2010 ASHRAE Handbook -- Refrigeration: Chapter 11, Refrigerant-Control Devices



Product Code(s): D-R112010SI