System designs

Overview: System designs A and B for ejector operation
System design	A Standard ejector system	B System with ejector, parallel compression and with mechanical high-pressure control valve for emergency operation
Ejector static	Applicable	Non-applicable
Ejector adjustable ①	Applicable	Applicable
Ejector motive mass flow	High pressure refrigerant mass flow	High pressure refrigerant mass flow
Ejector suction mass flow	Liquid	Liquid/gas
Ejector suction pressure	p_{o MT}	p_{o MT}
Pressure level outlet mass flow	Intermediate pressure (IP)	Intermediate pressure (IP)
Ejector pressure lift	Low	High
System with intermediate pressure vessel	Yes	Yes
Evaporator operation	Flooded or dry	Flooded or dry
System with separator	No	Yes
System with parallel compression stage	No	Yes

① Adjustable either by modulating static ejectors connected in parallel or by changing the opening degree of the ejector nozzle or by connecting ejectors in parallel with adjustable opening degree of the ejector nozzles.

Content

System design A − standard ejector system
System design B − with ejector, parallel compression and mechanical high-pressure control valve for emergency operation