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 38 of 45

Established by E. Morin

To the attention of Ms. Beatriz Herrero-Gonzalo

3. Radiation losses Boiler capacity

3,1 ton/h (=2MW)

Load

32 %

0,2 %

Radiation losses at full load

Radiation losses

4,1 kW

-0,6%

4. Blow down TDS Make-up water

50,0 ppm

1520,0 ppm

TDS Feed water boiler

Boiler water lost by blow down + carry over

3,4 % of steam output (30,4cycles)

1,319 ton/h

Boiler feed water flow

Boiler water lost by blow down + carry over

0,043 ton/h

1,000

X-value of the steam from the boiler

Blow down flow remaining

0,043 ton/h

Enthalpy blow down water

721 kJ/kg

12,0 °C

Temperature make up water

Enthalpy make up water

50,2 kJ/kg

Total Blow Down losses (Boiler + Deaerator)

8,1 kW

-1,3%

Blow down losses compensated by boiler only

4,0 kW

-0,6%

5. Energy losses due to excess of water Feed water tank pressure

0,0 bar(g)

% of revaporisation (7 to 0 barg)

13,5%

Water excess

40,0 %

1,319 ton/h

Feed water flow

Condensate flow out of separator

0,484 ton/h

Condensate enthalpy

721 kJ/kg

12,0 °C

Temperature make up water

Enthalpy make up water

50,2 kJ/kg

Flash steam flow

0,066 ton/h

Energy loss from condensate

44,7 kW

-6,9%

6. Boiler Efficiency and Fuel Costs Net power output in steam from the boiler

556,4 kW ( 3472 MWh)

86,0%

Net steam production boiler

0,791 ton/h = 4938 t/year

Boiler efficiency on LHV

86,05 %

BOILERHOUSE SIMULATION

Boiler house operating hours

6.240 hours/year

6. Steam consumption feed water tank

% LHV

0,29 m3/h

Measured make up water flow

Enthalpy make-up water

50,16 kJ/kg

Feed water flow to boilers

1,32 m3/hr

Enthalpy feed water

388,74 kJ/kg

Enthalpy condensate from separator (liquid phasis)

712,30 kJ/kg

Enthalpy flash steam from condensate (separator)

2259,04 kJ/kg