Copyright ©1998-99:
AMKO Systems Inc.
All rights reserved.
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SPIRAL TUBE
HEAT EXCHANGE DIAGRAM
Spiral tube heat exchanger and typhoon separator - the ultimate in sample gas conditioners.
MAK Spiral Tube Heat Exchanger vs. the Competition: |
| Product Features | MAK |
COMPETITION |
| Heat exchanger | Spiral tube |
|
| · sample gas flow… | turbulent |
laminar |
| · heat transfer rate… | maximized by centrifugal |
reduced by central flow |
| · heat surface area… | self cleaning effect |
tendency of fouling |
| · condensate flow… | vertical downward |
vertical upwards |
| · temperature of… | coolant R 134a + 1.5°C |
aluminum block + 5°C |
| · system forms… | big condensate droplets |
small condensate droplets |
| · conditions… | excellent for all materials |
restricted at PVDF |
| Separator | cyclone / typhoon design |
practically not existing |
| · separation… | withing the coldest area |
against the flow stream |
| · droplets are… | large and separable |
like fog < 10m |
| · efficiency… | ~ 99% |
~ 70% |
| · contact surface… | of condensate reduced |
of condensate larger |
| · rate of solubility… | low and within limits |
high and out of limits |
| · dew point… | 3°C ± 0.5°C |
6 - 12°C |
| · stated conditions… | guaranteed by one system |
needs 2 systems in series |
| Cooling system | controlled by HGBV |
switched ON and OFF |
| · service life… | unrestricted |
restricted |
| · dew point… | constant |
unstable |
| · cooling storage… | adsorbs peak loads |
not existing |
| · cooling transfer… | everywhere around |
only from one side |
| · cooling availability… | sufficient for all systems |
limited > 3 paths |
| · load changes… | fast / sensitive response |
time consuming reactions |
| · coolant… | environ. friendly R 134a |
combustible R 290 |
| · design… | compact and robust |
less compact and robust |
| · tubing, soldering… | corrosion resistant |
tendency to leak |
| · fan and motor… | standard |
optional |
| · temp. indicator… | standard |
optional |
| Dimensions/Weight | MAK 6-2 / MAK 6-3 |
|
| · housing volume | 35 / 46 dm3 |
54 dm3 |
| · installation surface | 12 / 16 dm2 |
16 dm2 |
| · weight | 21 / 25 kg |
32 kg |
