Clayton Armstrong 2011-02-22 GSK Aranda SP - steam&condensat

STEAM AND CONDENSATE AUDIT

Project N°30275

Date: 04/02/2011

GSK MANUFACTURING Aranda, Spain

Page 31 of 45

Established by E. Morin

To the attention of Ms. Beatriz Herrero-Gonzalo

-Dehumidifier Munters (for air conditioning)

The Munters system uses a desiccant rotor to remove humidity from outside air.

This desiccant rotor needs to be regenerated using hot air.

The air is heated by a steam coil up to 125°C.

Steam pressure needed is 4.25 barg (indicated in Munters datasheet).

Steam feeding lines are well equipped with control valves and automatic ON/OFF valves.

However there is no drainage point before all valves. Consequently, when the valve is closed,

condensate accumulates in steam line.

- Steam pressure levels

Many pressure reducing stations are installed on steam distribution lines.

However the steam pressure level is not always adapted to the need.

Munters dehumidifiers are designed to use 4.25 barg, but we have seen some equipment fed with 4

barg or even 2 barg steam. Therefore the desiccant regeneration may not be efficient and the

humidity control hazardous.

For GLATT dryers, steam pressure levels are also various:

- WSG120-sala 531, GLATT1350-sala 535 = 3 barg

- GLATT-sala 544 = 4.5 barg

- WSG120-sala 602, Climatiz.Recubrid.- sala 607 = 5 barg