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 36 of 45

Established by E. Morin

To the attention of Ms. Beatriz Herrero-Gonzalo

Fuel savings

Existing

Flash steam flow estimated

ton/h

0,020

Energy loss

kW

13

operating hours

hr

6240

yearly Energy used

MWh/year

78

boiler efficiency

%

86

Fuel used

MWh/year hhv

101

Fuel unit costs

€/MWh hhv

25

Fuel costs

€/year

2527

Water savings

Existing

Flash steam flow estimated

kg/h

0,020

Yearly water lost

m³/year

125

Water unit costs

€/m3

5,0

Water costs

€/yr

624

CO2 savings

Existing

Energy used

Gj/yr

364

CO2 emissions

kg CO2/GJ

50,6

CO2 produced

t/yr

18

9.2 Additional operational optimisations

Flooded heat exchangers:

Poor drainage of condensate from low temperature controlled heat exchangers could have an

impact on productivity (decreased heat exchange surface and unstable heating temperature) and on

maintenance (leaking heat exchangers due to corrosion and water hammering). The reasons for this

phenomenon and possible solutions are described in details in appendix 2. Almost all anti-freezing

coils on GLATT equipments are operating under these conditions. In case flooding of heat

exchangers starts creating important productivity and maintenance problems, we recommend

studying in more details the best solution for each concerned heat exchanger.