Troubleshooting.

[refsystem]

Dear RE members,

While conducting performance test of watercooled DX screw chiller in factory I have following observations.

Charged less than spec.( R& D)
Capacity is less by 3%
Discharge/suction pr. as per design
subcooling 5 deg C
Suction superheat is @ 3 deg C.
Discharge superheat 27 deg C.

I need to know do I have to charge additional gas or not?
Since suction superheat is low if I open TXV my capacity will be dropped.

Pl. suggest solution.

Thanks in advance.

[señorfrio]

Hi refystem, if you check the discharge pressure you can determinate if your system have the correct referigerant chargecould you send me the suction pressure and the discharge pressure

[agitator]

Dear RE members,

While conducting performance test of watercooled DX screw chiller in factory I have following observations.

Charged less than spec.( R& D)
Capacity is less by 3%
Discharge/suction pr. as per design
subcooling 5 deg C
Suction superheat is @ 3 deg C.
Discharge superheat 27 deg C.

I need to know do I have to charge additional gas or not?
Since suction superheat is low if I open TXV my capacity will be dropped.

Pl. suggest solution.

Thanks in advance.

hello,

if not enough gas yes u need to charge, but make sure that you must have enough load ( for heat transfer ) what kind of refrigerant you used, is the system have level gauge or refrigerant sight glass

for screw compressor mostly the design base is 10~20degc suct superheat at full load

[serviceman]

How to make and model of machine is?