Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Register Log in
  • Congratulations KootK on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Interpretation of Heat exchanger nameplates

Status
Not open for further replies.
edwardmp2009

edwardmp2009

Chemical
Dec 15, 2011
16
I recently purchased a plate heat exchanger for our process which should cool down a gas stream from about 850 deg C to 50 deg C using water coolant. The heat exchanger supplier provided the heat exchanger which he insisted could handle gas temperatures close to 850 deg C as long as there is adequate water flow to avoid overheating the plate material and also making sure that the water coolant does not boil. The nameplate on this heat exchanger is as shown in the attached image in which I have hidden certain information for confidentiality purposes.

I got confused after seeing that the allowable temperature (TS) is specified as -160 to 190 deg C since I interpreted this as fluid temperature. Upon seeking clarification from the supplier, they said it was plate temperature. May you please clarify if the temperature (TS) specified on the name plate is plate temperature or fluid temperature? I have done some internet research and saw that many heat exchanger suppliers never specify whether this refers to plate temperature or fluid temperature but use the following terminology:
TS - maximum allowable temperature
PS - maximum allowable pressure
PT - test pressure
VL - chamber volume.

Thank you in advance!!!
 
 https://files.engineering.com/getfile.aspx?folder=3ddec46f-539c-4376-9dce-9ecc627c8be7&file=Nameplate_.JPEG
Replies continue below

Recommended for you

Sort by date Sort by votes
"and also making sure that the water coolant does not boil."

That is the responsibility of the the thermal design / applications engineer, not yours.

Is this a gasketed unit ?
 
Upvote 0 Downvote
It is not a gasketed unit. It is a Cu brazed plate heat exchanger.
 
Upvote 0 Downvote
If it refers to plate temp, then the HE supplier assumes water coolant is always flowing at adequate flowrate to keep the plate temp at <190degC. So if cooling water flow stops for some reason (power failure, CW pump failure etc) or flow is low, hot gas flow should be stopped and preferably depressured on some auto control sequence.
There may be some abnormally high gas exit temp which corresponds to high plate temp >190degC; this may be 200degC or so ?? Ask the HE supplier and install a temp sensor on gas exit that you can use to trigger this shutdown / depressure sequence from your main control panel. High temp trip setting will have to be much lower to prevent boiling of water coolant, and this setting may be say 20degC less than the b.p. of water at the min operating CW pressure at this HE.
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Samingme755
  • Question
Heat exchanger in hydrogen service
Replies
3
Views
1K
pvros
pvros
SirAdam
  • Locked
  • Question
Heat Exchanger Client-supplied nformation 1
Replies
14
Views
551
Caloooomi
Caloooomi
MechEng92
  • Question
How should I work out Wattage for a heat exchanger pad heater?
Replies
9
Views
910
pierreick
pierreick
Mechinspqoal
  • Locked
  • Question
Cooling Water Service Heat Exchanger Hydrotest Tube Leaks
Replies
8
Views
321
georgeverghese
georgeverghese
Papps
  • Locked
  • Question
Operation Of Heat Exchanger Above The Overall Heat Transfer Coefficient 1
Replies
3
Views
261
Desmond_Aubery
Desmond_Aubery

Part and Inventory Search

Sponsor

Back
Top Bottom