UVIC cloud chamberDEC,10 2008

Mechanical questions

Reply to:Mark Lenckowski

kram@uvic.ca

General drawing notes:* Red tubing – discharge* Purple tube – suction and/or evaporator* Yellow tube – oil line to compressor* Orange tube – discharge (separator to heat exchanger)

* Hi temp stage – R134A (approx 10oz)* Low temp stage – R508 (approx 100-120PSIG)

* All access ports will have caps (not drawn)

Cloud chamber mechanical (iso)

Cold stage evaporator

Cloud chamber mechanical (front)

Heat exchanger

Cold stagerefrigeration

Approx 32”

Warm stagerefrigeration

Cloud chamber mechanical (left)

Access portsCold stage

Access portsWarm stage

Warm stage circuit (iso)

Warm stage circuit (front)

DISCHARGE: (red) ¼” tube X 52” long

Q3: is two loops sufficient for vibration control?

SUCTION: (purple) 3/8” tube X 92” long

Q1: is two loops OK for vibration control?Q2: is 5/16” tube an option?

Warm stage circuit (left)

Schrader access valveSAE ¼” flare (discharge side)

Q4: Is this style of valve OK on the discharge circuit?

Shut-off/access valve (packed) withSAE 3/8” flare port. Henry 7763-B valve or equivalent.

Q7: Is this an acceptable style of valve?Q8: Is this location acceptable?

.042” capillary tube90” long

This feature is copied from picturesof Scientemp equipment.

Q5: Is it an expansion chamber orFilter dryer?Q6: If a filter dryer, is 100 mesh sizeto be used?

Filter dryer to keep capillary tube clear (drawn as 1” X 6” size)

Q9: Is 100 mesh size good to use?Q10: Is the size (volume) acceptableQ11: does filter dryer need to be verticalor is about 30deg OK?

Warm stage circuit (right)

Cold stage circuit (iso)Evaporator cold stage* 5/16” tube X 230”long * 22” OD X 2” pitch spiral coil

Q12: Is 3/8” tube too big?

Cold stage circuit (front)

Evaporator cold stage5/16” tube

Suction: 3/8” tube X 69” long

Discharge: ¼” tube X 35” long

Q14: is two full loops OKfor vibration control?

Suction:

Q13: is two loops OKfor vibration control?

Oil return: ¼” tube X 23” long

Discharge: ¼” X 16” long

Cold stage circuit (left)

Schrader access valveSAE ¼” flare (discharge side)

Q18: Is this style of valve OK on the discharge circuit?

Capillary tube: .036” X 90” long

Shut-off/access valve (packed) withSAE 3/8” flare port. Henry 7763-B valve or equivalent.

Q19: Is this an acceptable style of valve?Q20: Is this location acceptable?

Filter dryer (drawn as 1” X 6” size)

Q15: Is 100 mesh size good to use here?Q16: Is the size (volume) acceptable?Q17: does filter dryer need to be verticalor is about 30deg OK?

Cold stage circuit (right)