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 11 of 45

Established by E. Morin

To the attention of Ms. Beatriz Herrero-Gonzalo

Treated Water unit costs

€/m3

5,0

5,0

Water costs

€/yr

1063

530

533

Fuel savings

Existing

Proposed

Savings

Sensible heat Blowdown

kj/kg

721,0

721,0

Sensible heat make up water

kj/kg

50,0

50,0

Sensible heat differential

kj/kg

671,0

671,0

Energy used

kj/h

22823

11373

11450

Boiler efficiency

%

86,0

86,0

Operating hours

hr

6240

6240

Fuel used

MWh/yr

46,0

22,9

23,08

Fuel unit costs

€/MWh

25,0

25,0

Fuel costs

€/year

1150

573

577

CO2 savings

Existing

Proposed

Savings

Energy used

Gj/yr

166 50,6

83

83

CO2 emissions

kg CO2/GJ

50,6

50,6

CO2 produced

t/yr

9,5

4,7

4,7

Total savings

Existing

Existing

Proposed

€/yr

Total costs

2211

1102

1109

Total energy saved by reducing the blowdown rate is estimated at 1110 €/year .

3.4 Investments

No investment is required to change the blowdown frequency on the BMS System.

However we estimate the budget to install a TDS controlled blowdown valve at 9000 €.

Payback time for this optimization would be more than 7 years.