Thermal Expansion Valve Application
Thermal Expansion Valve Application
(OP)
I'm looking at a system overhaul and have been informed of alledged discrepancies from the OEM's original design that could look to be corrected at the same time.
Basically I'm interested in experience of TX valves used in tandem (controlled via solenoid valves) to give the ability of using all of the evaporator through both TX valves or just half (in higher ambients) using just one TX valve.
The models currently used are Danfoss with external equalisation, which is where the 'advise' comes from - do the external equalisation lines from the separate TX valves need to be connected together as well as after the evaporator?
Many thanks
Joe
Basically I'm interested in experience of TX valves used in tandem (controlled via solenoid valves) to give the ability of using all of the evaporator through both TX valves or just half (in higher ambients) using just one TX valve.
The models currently used are Danfoss with external equalisation, which is where the 'advise' comes from - do the external equalisation lines from the separate TX valves need to be connected together as well as after the evaporator?
Many thanks
Joe





RE: Thermal Expansion Valve Application
You could connecte them together first, then make one tap to the suction line, or connect them independantly to the suction line. Should make no difference in performance.
RE: Thermal Expansion Valve Application
You can't have one cooling coil with two TXVs and expect the coil to operate with one on and one off when the load drops. If this can be done with new technology then it's something I'm not aware of.
RE: Thermal Expansion Valve Application
Page 11 shows a dwg. with 1 and 2 evaporators.
RE: Thermal Expansion Valve Application
RE: Thermal Expansion Valve Application