Hi there, what's the application difference between TEV and EEV?
Printable View
Hi there, what's the application difference between TEV and EEV?
TEV controlled by the thermostatic charge and EEV controlled by electronics.
EEV is more expensive.
They both do the same job -injecting refrigerant into an evaporator of any kind.
Thanks chemi-cool.Quote:
Originally Posted by chemi-cool
TEV has a bulb to get the SH, then to control valve. Can EEV get SH? how EEV control flow rate?
EEv is controlled by electric servo motor.
The motor gets its commands from electronic control which collects its date from sensors .
You can read about it here:
http://www.carelusa.com/e2v.htm
http://www.parker.com/literature/Spo...-20_092008.pdf
Good Information! Thanks.Quote:
Originally Posted by chemi-cool
For a refrigeration system, if it has a TEV or EEV, does it need Solenoid vale? In what situation, a solenoid valve is needed?
often times with an EEV with stepper motors you do not need a solenoid valve because the EEV can close 100%.
We also have a supermarket "Fresh and Easy" (tesco) who use a danfoss EEV that is powered from 120 or 208 volts. It is not a stepper motor but actually pulses 100% open and 100% closed through an orfice.
Also if your circuit is using a TEV and is on a rack/pack. you will need a solenoid valve either on the liquid line or suction line so you can obtain defrosting by stopping the refrigeration flow.Quote:
Originally Posted by david2008
Thanks Phase_Loss.
i don't want to put money on that. not the first time i have seen a technician covert in oil because of a valve was not fully closed.:DQuote:
Originally Posted by Phase Loss
Ice