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 17 of 45

Established by E. Morin

To the attention of Ms. Beatriz Herrero-Gonzalo

CO2 produced

t/yr

55

Water savings

Existing

Flash steam flow estimated

kg/h

0,066

safety factor

10%

Yearly water lost

m³/year

371

Water unit costs

€/m3

5,0

Water costs

€/yr

1853

In conclusion, we estimate the total potential savings at 9360 €/year .

1. Solution 1 : reduce excess feed water rate on the pump

Considering your installation, the Clayton specialist technician will decide how much it is possible to

reduce the amount of excess water pumped.

The following table shows savings calculation if the rate is decreased by 10% :

Fuel savings

Existing

Proposed

Savings

Feewater flow

m³/hr

1,1

1,1

Excess feedwater rate

%

40%

30%

10%

Excess water flow / condensate

m³/hr

0,44

0,33

0,11

% of revaporisation (7 to 0 barg)

13,5%

13,5%

Flash steam flow estimated

ton/h

0,059

0,045

0,015

Energy loss

kW

37

28

9

operating hours

hr

6240

6240

yearly Energy used

MWh/year

232

174

58

boiler efficiency

%

86

86

Fuel used

MWh/year hhv

300

225

75

Fuel unit costs

€/MWh hhv

25

25

Fuel costs

€/year

7506

5629

1876

CO2 savings

Existing

Proposed

Savings

Energy used

Gj/yr

1081

811

270

CO2 emissions

kg CO2/GJ

50,6

50,6

CO2 produced

t/yr

55

41

14