DESMI Proven Technology 1

DESMI Proven Technology 3

DESMI Proven Technology 2

DESMI Proven Technology 4

DESMI Proven Technology 5


Energy Efficient Pump Solutions in Waste-to-Energy Facility

Energy Efficient Pump Solutions in Waste-to-Energy Facility

Energy Efficient Pump Solutions in Waste-to-Energy Facility for District Heating

1 ton of waste can be converted to 2 MWh heat and 2/3 MWh electricity. Using waste as fuel for district heating is both a good idea for the environment and for financial aspects: Waste is always an available “fuel”, where prices are not fluctuating.

Denmark holds strong experience and competences for use of surplus heat from the Waste-to-Energy Plants. 29% of all waste in Denmark is incinerated (61% is being recycled). The Incineration/Waste-to-Energy plants supply approx. 20% of the district heating as well as 5% of the electricity in Denmark.

“AffaldVarme Aarhus” is the management company responsible for handling waste and district heating in Aarhus (the 2nd largest city in Denmark). It is part of Aarhus Municipality. The facilities of this company, play an important role in relation to the overall environmental targets in Aarhus.

Developing the district heating supply system and optimizing the waste systems will ensure that targets can be achieved within the energy, environment, and climate arena. Since 1980, “AffaldVarme Aarhus” and consumer-owned CHP plants, have co-operated in targeting 90% of the heat demand. The target has been reached, and today 285,000 of the 300,000 citizens in the area are provided with district heating.

They are also responsible for the running and maintenance of the transmission system including the boiler plant, heat exchanger, pumping station etc.
The district heating network in the Aarhus area consists of 2,000 km of pre-insulated pipework.

DESMI Pumping Technology A/S is a leading, international pump manufacturer for district energy. 
In May 2013 DESMI supplied “AffaldVarme Aarhus” a large end-suction NSLH centrifugal pump for the transmission pipeline system: Pump model NSLH300-525, 1100 m3/h at 115 mWC, 500 kW, 4-pole motor, pressure-tested up to 37.5 bar.

The DESMI retrofit solution was chosen on the basis of: High efficiency and improved operating economy due to DESMI’s innovative hydraulic design compounded by the application of an internal coating reducing friction losses. Ease of maintenance, as the unit is close coupled and makes the replacement of bearings and the mechanical seal more manageable.

The direct energy saving consequences of this solution:  A minimum saving of 224,000 kWh per year compared to that of the replaced pump. This results in a dramatically short pay-back period giving a quick return on initial investment.

It goes to show that selection of key equipment with particular focus on its energy efficiency (and long life cycle) is very important both on new built facilities and for retro-fit on existing plants where much improved energy efficiencies can be obtained.

DESMI has also supplied energy efficient pump solutions to two of the other main Waste-to-Energy plants in Denmark: “Vestforbrænding” and “Nordforbrænding” in Copenhagen.
”Vestforbrænding” is the biggest producer and distributor of waste-to-energy based district heating:
In 2012 520,000 tons of waste was incinerated (from a population of approx. 900.000 as well as 60.000 companies). At the incineration in 2012 1,114.000 MWh of district heating was produced – along with 249,000 MWh of electricity. Enough for heating up approx. 80,000 households – as well as the power supply for approx. 75.000 homes.

Related cases

To the top

Join DESMI at AquaNor, 20-23 August 2019

The world’s largest aquaculture technology exhibition is taking place August 20-23 2019 in Trondheim, Norway

I’m interested. Tell me more

Join DESMI at Donsö Shipping Meet, 3-4 September 2019

Swedens biggest shipping event, Donsö Shipping Meet, is taking place September 3-4 in Gothenburg, Sweden

I’m interested. Tell me more

Join DESMI at MAST, 4-6 September 2019

The MAST conference and trade-show is taking place September 4-6 in Chiba, Tokyo

I’m interested. Tell me more

Join DESMI at BaltExpo, 9-11 September 2019

The 20th International Exhibition and Conferences BaltExpo is taking place September 9-11 2019 in Gdansk, Poland

I’m interested. Tell me more

Join DESMI at NEVA, 17-20 September 2019

The 15th International Maritime Exhibition and Conferences of Russia is taking place September 17-20 in St. Petersburg, Russia

I’m interested. Tell me more

Join DESMI at BWMTech North America, 24-26 September 2019

BWMTech is taking place 24-26 September, Florida, USA

I’m interested. Tell me more

Join DESMI at Inmex SMM 3 - 5 October 2019

South Asia's largest Maritime exhibtion & conference is taking place October 3-5 in Mumbai, India

I’m interested. Tell me more

Join DESMI at DanFish, 9-11 October 2019

The exhibition for equipment to the fishing industry, DanFish, is taking place October 9-11 in Aalborg, Denmark

I’m interested. Tell me more

Join DESMI at Kormarine, 22-25 October 2019

The International Marine, Shipbuilding, Offshore, Oil & Gas exhibition, Kormarine, is taking place October 22-25 in Busan, Korea

I’m interested. Tell me more

Join DESMI at Submarine Technology, 29-31 October 2019

The inaugural Submarine Technology 2019 event will be held in Amsterdam, Netherlands on 29th-31st October, welcoming an international audience of submariners, procurement teams, R&D organisations, academia and industry to discuss submarine programmes and innovations.

I’m interested. Tell me more

Join DESMI at Europort 5-8 November 2019

The leading exhibition for special purpose vessels Europort is taking place November 5-8 in Rotterdam, Netherlands

I’m interested. Tell me more

Join DESMI at Marintec China, 3-6 December 2019

The Maritime exhibition, Marintec China, is taking place December 3-6 in Shanghai, China

I’m interested. Tell me more

Join DESMI at The BWMTech Conterence, 9-11 December 2019

2 day conference with ship owner case studies on ballast water and brand new workshop on crew training taking place in London 9-11 December 2019

I’m interested. Tell me more

Join DESMI at OCT, 29-31 October 2019

Marine & Oil Spill Response show, OTC Brazil is taking place October 29-31 in Rio de Janeiro, Brazil

I’m interested. Tell me more

We use cookies to enhance our website and improve your experience of it. If you say no to cookies, our website will still function, but it may result in diminished functionality.