SHELL AND TUBE HEAT EXCHANGERS

SHELL AND TUBE HEAT EXCHANGERS

Design data PED (CE) approval

Version Tubes side Shell side
DP (bar) DT (°C) Tmin (°C) PT (bar) DP (bar) DT (°C) Tmin (°C) PT (bar)
STD 10 90 -10 14.3 30 120 -10 42.9
HP 16 90 -10 22.9 48 120 -10 68.6
DP Design Pressure DT Design Temperature Tmin Minimum temperature PT Test Pressure

The XS-S-M in item’s description is set according to shell diameter and the chart below.

Dshell Min – Max range
mm Inches
XS 51 168 2 6.63
S 194 324 7.63 12.75
M 356 457 14 18
L 508 610 20 24
XL 660 1007 26 42

 

Capacity Table

CRF serie has been optimized on three different shell sizes, according to the approach requested
 

CRF (Tower version – 2P)
Ti = 30°C To = 35°C, SC = 3 [K], FF = 4.3E-05 [m²K/W]
CRF Model 5 ft 162-5
XS
163-5
XS
164-5
XS
211-5
S
212-5
S
213-5
S
214-5
S
271-5
S
272-5
S
273-5
S
274-5
S
322-5
S
323-5
S
324-5
S
401-5
M
402-5
M
403-5
M
404-5
M
452-5
M
453-5
M
454-5
M
R407C
Tc = 44.5°C (dew)
Tg = 85°C
Qn
(kW)
109 123 142 166 197 225 249 287 320 353 410 481 530 598 681 746 829 930 1003 1081 1151
R134a
Tc = 40.0
Tg = 55°C
Qn
(kW)
111 125 145 169 201 230 255 293 327 361 420 493 544 614 698 765 851 956 1030 1111 1184
CRF Model 6 ft 162-6
XS
163-6
XS
164-6
XS
211-6
S
212-6
S
213-6
S
214-6
S
271-6
S
272-6
S
273-6
S
274-6
S
322-6
S
323-6
S
324-6
S
401-6
M
402-6
M
403-6
M
404-6
M
452-6
M
453-6
M
454-6
M
R407C
Tc = 43.0°C (dew)
Tg = 85°C
Qn
(kW)
111 125 145 168 200 229 253 292 325 359 417 489 540 608 692 758 843 946 1020 1100 1172
R134a
Tc = 38.5
Tg = 55°C
Qn
(kW)
106 119 139 161 192 220 244 280 312 345 401 471 520 586 667 731 814 914 985 1062 1132
CRF Model 7 ft 162-7
XS
163-7
XS
164-7
XS
211-7
S
212-7
S
213-7
S
214-7
S
271-7
S
272-7
S
273-7
S
274-7
S
322-7
S
323-7
S
324-7
S
401-7
M
402-7
M
403-7
M
404-7
M
452-7
M
453-7
M
454-7
M
R407C
Tc = 42.0°C (dew)
Tg = 85°C
Qn
(kW)
113 126 147 170 203 233 257 296 330 365 424 497 548 618 704 770 858 962 1037 1117 1190
R134a
Tc = 37.5
Tg = 55°C
Qn
(kW)
101 114 132 153 183 210 232 266 298 329 382 448 495 558 636 697 775 870 938 1011 1079
Wm (m³/h) 22.4 26.5 30.6 34.7 42.9 48.9 54.0 61.3 69.3 76.5 88.7 103.9 116.1 132.7 150.8 165.3 183.6 207.6 224.4 241.8 262.6

 

Ti Inlet water temperature To Outlet water temperature SC Subcooling FF Fouling factor Tc Condensing temperature Tg Inlet gas temperature Qn Condensing capacity Wm Water maximum flow
Evaporators
Application Technology Benefits
The new CRF condenser has been developed for HFC cooling applications at medium pressure (PS 30 bar) and high pressure (PS 48 bar) within refrigeration, process cooling and air conditioning.
The secondary fluid is usually fresh water that can be in a closed loop with a cooling tower (tower application) or in an open loop with a well (city application). Some applications can use also glycol.
These applications usually require a condensation temperature in a range of +30°C/+50°C depending on the system working condition and its efficiency rating.
The CRF design has been optimized for R407C/F and R134a refrigerants but it can be also utilized with HFO1234ze, R410A, R404A and R507.
Thank's to its new high performance tubes, new headers, new shell and the new baffles, the Alfa Laval CRF models provide maximum efficiency with a low cost/kW.
This is an important step ahead compared with the current CDEW and CDEW-E models; the new CRF is ready to fight with competition.
  • High efficient condenser tube which allows an overall performance increase vc. CDEW models keeping the water pressure drop at the same level.
  • Refrigerant connections optimized for R134a to reduce the pressure drops.
  • Three tube lenghts to match operating conditions with different temperature approaches.
  • Compact design with about 15%-20% shorter lenght and weight comparing with existing solution.
  • Water flow optimized to reduce the fouling and erosion risks.

Condensors
Centromac Logo
Centromac Logo
 

Telephone Number:011 397 1024

Cell Number:082 802 0785

Email Address:johan@centromac.co.za

 
Centromac Logo