7/17/2019 TI-450_eng-R2 - Membranwand Design INook

http://slidepdf.com/reader/full/ti-450eng-r2-membranwand-design-inook 1/2

No. : TI 450_eng Rev. : 2

Page : 1 of 2 TECHNICHAL INFORMATION

Date : 16.06.10

Comparison of Wall-Tube Design

for Natural Water Circulation Boiler – Type iNook

Doc.: TI-450_eng-R2 - Membranwand Design i Nook.doc  

SCHNEIDER Engineering GmbH Email / Internet 

Hildburghauser Straße 79 info@schneider-kessel.com

Wall-Tube Design of SCHNEIDER iNook Boiler

  No tube reductions needed since tube

connections of the riser tubes to the ring

collectors are possible without tube reductions

  Unhindered water and steam flow since no

reduction of tube cross section

  No clogging and no overheating occurs

  Total gas tight membrane wall design securesno leakages between the tube cages hence in-

creasing the boiler efficiency

12249 Berlin, Germany www.schneider-kessel.comTel.: +49-30-75449399-0Fax: +49-30-75449399-21

7/17/2019 TI-450_eng-R2 - Membranwand Design INook

http://slidepdf.com/reader/full/ti-450eng-r2-membranwand-design-inook 2/2

No. : TI 450_eng Rev. : 2

Page : 2 of 2 TECHNICHAL INFORMATION

Date : 16.06.10

Comparison of Wall-Tube Design

for Natural Water Circulation Boiler – Type iNook

Doc.: TI-450_eng-R2 - Membranw a  

Wall-Tube Design of Others

Tube reductions to weld the riser tubes into the ring collectors are reducing the free cross sec-

tion to 38% of the original one. This leads during sudden peak loads simultaneously to

  Clogging of this area by steam bubbles as a result of the pressure drop

  Overheating of these parts as a result of insufficient cooling

  Risk of tube damage

  Gas leakages from tube to tube cage with negative impact on boiler efficiency

Not gas tight – unwelded!

nd Design iNook.doc 

SCHNEIDER Engineering GmbH Email / Internet 

Hildburghauser Straße 79 info@schneider-kessel.com12249 Berlin, Germany www.schneider-kessel.comTel.: +49-30-75449399-0Fax: +49-30-75449399-21