Type of CHP system: Extraction from landfill

Plant owner:

The LFG plant is owned by:

ESCO International ApS

Sødalsparken 20

DK-8220 Brabrand

Denmark

Phone: +45 8734 3466

Fax: +45 8734 3469

The LFG plant is operated by:

DDH Contractors (Hedeselskabet)

Klostermarken 12

DK-8800 Viborg

Denmark

Phone: +45 8728 1000

Fax: +45 8728 1001

www.hedeselskabet.dk

Commissioned: 1998

Status of plant: Commercial

Main contractor:

DDH Contractors (Hedeselskabet)

Klostermarken 12

DK-8800 Viborg

Denmark

www.hedeselskabet.dk

Power generation: Gas engine

Main fuel: Landfill gas

It is expected that the gas from the site can be utilised during more than 20 years. The annual production is approximately 1,000,000 m3 gas, 1,500 MWh electricity and 2,200 MWh heat (2003).

The gas production from the site is decreasing and currently only about 160 MWh per month (ie. app. 43% of the nominal capacity) can be produced.

Nominal capacities & efficiencies:

Total thermal input, incl. fossil fuels: 1,43 MW

Gross electrical output: 0,55 MWe

Net electrical output: 0,55 MWe

Heat output: 0,68 MJ/s

Electrical efficiency, gross: 38,5 %

Overall efficiency, gross: 86,5 %

How is plant controlled: Currently the plant is run due to the amount of landfill gas available.

Heat usage: Heating only

Energy usage: The generated electricity is delivered to a local distribution company, NRGI A/S, via a transformer. The heat is sold to NRGI for district heating in the village of Balle.

DH inlet temperature: 90 °C

DH return temperature: 45°C

Waste water: No waste water

Plant description:

Glatved Landfill site is located in a old gravelpit. The amount of deposied waste is about 1.3 million tonnes. The site is covering an area of more than 5 ha. The depth of the landfill site is 8 – 10 metres.

In order to recover the landfill gas 40 holes have been drilled vertically into the site. More than 8 km of tubing is used for drawing in the gas and connecting the 40 gas wells with a pumping module, which is able to pump 400 m3 of landfill gas per hour. The pumping module compresses the gas to 2 bar above atmospheric pressure.

The compressed gas is transported over 3 km

to the CHP plant in Balle, where it is fed into an IC gas engine with a capacity of 551 kWe and 680 kWth.

Annual gas production: 1.024.000 Nm3

Gas quality: CH4: 43 %, CO2: 38 %, N2: 18 %, O2:1 %

Engine: Jenbacher: JMS 312 GS-L

Flue gas cleaning: No cleaning system

Annual gas production figure given for year 2003 in Nm3.

Staff: At the CHP plant a control system enables the operational staff to control and monitor the plant operation from a remote position. The plant itself is unmanned.

Electricity sale info: The electricity tarifs is time dependent

Peak load: 8 am -12 am, 5 pm- 7 pm

High load: 6 am-8 am, 12 am-5 pm, 7pm- 9 pm

Low load: 9 pm – 6 am

The engine is only running in peak and high loads periods.

Data collected and quality assured by: FORCE Technology.

Contact person: Anders Evald