Energy Efficient Pumps and Pump Solutions for District Energy

PROVEN TECHNOLOGY

Energy Efficient Pumps and Pump solutions for District Energy District Energy: DE is the terminology used by the industry for the integration of District Heating and District Cooling. Heating and cooling systems in total account for 46% of global energy use. Therefore, these two systems (DH & DC) represent a huge potential for further reducing CO2 emissions. In response, we at DESMI are proud to be heavily involved in this business sector for which we design, manufacture, supply and support energy efficient pumps and solutions.

Frontpage source: IDEA 2

About DESMI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 District Heating District Heating & CHP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . District Heating “Made in Denmark”. . . . . . . . . . . . . . . . . DESMI Competences – District Heating . . . . . . . . . . . . . . DESMI Case Stories – District Heating. . . . . . . . . . . . . . .

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District Cooling District Cooling – Introduction. . . . . . . . . . . . . . . . . . . . DESMI Competences – District Cooling. . . . . . . . . . . . . . DESMI Case Stories – District Cooling. . . . . . . . . . . . . . . DESMI Selection Programme. . . . . . . . . . . . . . . . . . . . . . . . .

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DESMI is a leading, international manufacturer of pumps and pump solutions. DESMI has produced pumps for District Heating for almost 90 years and we are specialists in providing energy efficient pump solutions with minimum maintenance requirements as well as a long life cycle.

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About DESMI

About DESMI DESMI is a leading, international manufacturer of pumps and pump solutions. We are one of the most experienced industrial companies in Denmark, established back in 1834 – as a foundry in Aalborg, in Northern Denmark. Today we are a modern international group with global presence. We take pride in being in full control of our product quality – with own R&D, foundry, own factories as well as own service workshop facilities.

DESMI has produced pumps since the 1890s. Today we are focusing on pump solutions for Marine & Offshore, Industry, Oil Spill Response, Defence & Fuel, District Energy and other utility applications. We are specialists in providing energy efficient pump solutions with minimum maintenance requirements as well as a long life cycle. All our manufacturing processes are in accordance with the ISO 9001:2008 quality certification requirements as well as the specifications of our customers. In 2011 we were awarded “Entrepreneur Of The Year” by Ernst & Young.

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District Heating & CHP’s in Brief

District Heating District Heating is an energy distribution network that transports heated water generated in a centralized utility through piping to residential homes and commercial buildings primarily in urban areas. District Heating is clean, efficient and cost-effective due to its flexibility, scale of production and optimal heat generation conditions. The heat is often obtained from a CHP (Combined Heat & Power) plant burning fossil fuels or increasingly also biomass a.o. District Heating plants can provide higher efficiencies and better pollution control than localised boilers. Between the CHP plant and the distribution network there is a transmission pipeline through which heated water is pumped further onto the distribution network and into the individual buildings. The cooled water is then pumped back to the plant for re-heating.

on heat recycled from mainly CHP Plants, which includes a variety of fuels such as renewables, natural gas and oil. Alternatively it could be surplus energy from Waste-to-Energy plants, other power plants or industries. The positive economic and environmental benefits are shown in below illustration. DESMI provides pumping solutions both for applications in CHP Plants (or other types of power/energy producing plants) as well as for the entire pipe network, including substations.

60% “Waste” heat rejected to environment

100% Fuel Input

20% “Waste” heat rejected to environment

The fundamental idea of District Heating is to use energy that is already available and that otherwise would be wasted and cause pollution. In order to reduce primary energy demand and CO2 emissions, District Heat generation is often based

40% Useful energy produced for electricity

100% Fuel Input

40% Useful energy produced for electricity and/or cooling via district energy system 40% Useful energy produced for electricity

Source: IDEA

Source: Kjell Thorsson/Fortum

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District Heating

District Heating History of Danish District Heating Denmark has unique experience with district heating, which is the reason why many foreign delegations visit Denmark, in order to learn from our competences as one of the most energy efficient countries world-wide.

When the power stations in the large cities changed from diesel to steam heating in the 1930´s, many of them were combined heat and power plants, since the earlier development had obliged the stations to deliver heat as well.

In 1903, the first waste incineration plant was inaugurated in Copenhagen. The same year, the district heating production was put into regular operation. The waste was loaded into silos and from there, in portions, loaded further into the ovens. In the shape of steam the heat was led through tunnels to the newly built municipal hospital to a children´s home and to a poorhouse.

Already in the beginning of the 1960s, Denmark had more than 50 years of experience using district heating. This development was now strengthened by the fact that some Danish suppliers launched the idea of urban development with district heating based on a low supply temperature (up to some 90°C). Hereby the district heating stations and the distribution network would become cheaper. Also on the operational side this led to savings since the demands on personnel etc. did not have to live up to the regulations for hot-water plants or power stations.

Skagerrak jævnstrømsforbindelse

Frederikshavn havmøller

Konti-Skan jævnstrømsforbindelse

Nordjyllandsværket

Rønland havmøller

Djursland - Anholt

Randersværket

Øresund vekselstrømsforbindelse

Studstrupværket

Herningværket Tunø Knob havmøller

Svanemølleværket

The significant development of the Danish district heating sector began when the energy crisis hit the Western countries in 1973/74. At that time, energy consumption per inhabitant was extremely high. The outcome of the crisis was, however, that it became necessary to save energy in Denmark, including energy for space heating. One reason for this was that Denmark at the time imported almost 100% of all fossil fuels required to generate heat.

Kyndbyværket Middelgrunden havmøller

Amagerværket

Samsø havmøller

H.C.Ørstedværket

Asnæsværket Avedøreværket

Fynsværket Skærbækværket

Horns Rev 1 Esbjergværket

Stigsnæsværket

Enstedværket Vindeby havmøller

Tyskland vekselstrømsforbindelse

Kontek jævnstrømsforbindelse

Nysted havmøllepark (Rødsand 1)



MAP OF DENMARK’S HEAT SUPPLY Source: DBDH & Danish Energy Authority

The centralised form of heat supply grew steadily in the 1920s and 1930s, and gradually regular district heating substations appeared in connection with the development of large adjoining housing areas.

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Therefore, the Danish government was forced to devise methods for saving fuels in order to safeguard the interests of society and to reduce the consumers´ heating bills.

District Heating - “Made in Denmark” A number of initiatives were launched, including: •

Systematic planning of heat supply for all areas

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Biggest possible CHP generation on the basis of such planning

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Improved insulation of buildings

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Development of highly effective district heating pipe systems, pre-insulated pipes with high insulation properties and low installation costs

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Reduction of operating temperatures in district heating systems and a variable flow in the pipelines to secure the most economical operation in the overall production and distribution system.

Another reason for using this concept is the reduction of heat loss from the network due to reduced temperatures outside peak hours. Furthermore, wear and tear of the pump system is reduced, resulting in extended service life.

“Vestforbrænding”, surplus energy used for District Heating

The world´s largest Today, the Copenhagen district heating system is one of the world´s largest, supplying heat for a floor area of around 50 million square metres. The transmission system connects four CHP plants, four waste incinerators (e.g. “Vestforbrænding”) and more than 50 peak load boiler plants to more than 20 distribution companies in a one pool-

operated system with a total heat production of around 30,000 TJ. DESMI has supplied the majority of pumps used at “Vestforbrænding” as well as to the pumping station for Avedøre Power Station (picture above). To deliver heat in abundant quantities 24 hours a day is a simple task, but to deliver the exact amount of heat needed at any given time to all consumers requires modern equipment and operational skills. It is, nevertheless, the way Danish district heating systems are operated today.

So in conclusion – Denmark has unique experience within District Heating dating back more than 100 years - and DESMI has been around during this time assisting the power stations/CHP and District Heating networks with pumping solutions. Today approx. 65% of total energy used for heating in Denmark origins from District Heating.

DESMI is constantly developing and strengthening its competences and technologies within pump efficiencies and solutions. Currently DESMI is e.g. closely involved in the innovative “4th Generation District Heating Technologies and Systems (4DH)”. (More information - page 9)

The primary reason for using this concept is the large potential for saving power for pumping. Often pump energy can be reduced to one third over the year, and the pay-back time on the installation is often less than two years. 7

DESMI Competences - District Heating DESMI has unique pump manufacturing experience – more than 125 years in fact. Production of pump solutions for District Heating goes back approx. 90 years and we are still in the lead developing new technologies and solutions as e.g. related to 4th Generation District Heating among others. In brief DESMI’s pump competences include pump solutions for CHP Plants, Transmission & Distribution Networks, Substations etc. Pressure ratings up to 25 bar – temperatures up to max. 1500 C. • • • •

We provide pump solutions, not just pumps. We adapt our pump solutions to specific customer requirements. We supply competitive solutions, technically as well as commercially. The pump designs are based on DESMI Proven Technology from many years of experience within District Heating.

DESMI NSL

• • •

Examples of DESMI pump capabilities inside CHP (and Waste-to-Energy) Plants etc.: Shunt pumps – for water circulation to/from the boiler, condensation pumps etc. DESMI pump capabilities in the District Heating Network: Pumps within the Transmission Pipeline System. Pumps within the Distribution Network System. Pumps for the Substations etc.

DESMI DSL

The NSL, DSL and ESL pump concept: • High efficiency • Low NPSH values • Easy installation/service • Specific materials • Compact design • Standardized to modular design • Outstanding hydraulic design performance • Spacer-coupling options for easy maintenance • Robust shaft design • High efficiency impeller with low NPSH values • Self-priming ability with a separate built-on priming pump • NSL pumps also available in end suction design

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We provide energy efficient pumps, customized to customer needs. We supply flexible solutions also related to motor specifications as well as other accessories, such as frequency converters etc. Robust construction assists providing solutions for many different types of applications.

DESMI ESL

DESMI Competences - District Heating DESMI’s extraordinary experience as manufacturer and supplier of high quality pump solutions for district heating is an important resource for the innovative research programme “4th Generation District Heating Technologies and Systems”, known as 4DH: 4DH is an international research centre supported by The Danish Council for Strategic Research. Such development is fundamental to the implementation of the Danish objective of being fossil fuel-free by 2050 as well as the European 2020 goals. Research period currently funded 2012-2018. Stakeholders for this research include Aalborg University, Danish District Heating Association, leading Danish consulting engineers, leading district

heating utility companies in Denmark, and a handful of leading component/system manufacturers/ suppliers, including DESMI a.o. The research is about supply of heat through piping network as known from conventional District Heating - but utilizing lower temperatures than ever seen before (< 50-600 C). Key parameters include: Low energy demands, reduced heat loss & optimum interaction energy source, distribution and consumption. See also www.4dh.dk

Source: Danfoss/4DH

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DESMI Competences - District Heating DESMI has supplied for these District Heating projects, among others: •

Denmark – Vestforbrænding, Waste-to-Energy Plant Copenhagen. Many pumps supplied over the years (e.g. NSL 250-415).

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Netherlands – Nuon Energy Company (Vattenfall). Several pump supplies e.g. for WKC Almere Power plant. NSL250-330 centrifugal pumps for District Heating networks.

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China – Zunhua Power and Heating plant (160 km east of Beijing). NSL300-525 pumps, each with a capacity of 1,250 m³/h at 110 mWC and 1742 rpm.

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China – Harbin District Heating Project. NSL & DPV pumps

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Norway - Lillestrøm. D.H. e.g. NSL 300-525 pumps.

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Sweden – Process Pumpar, e.g. NSL 100-215, 100-265, 125-215, 125-265, 125-415, 150-330, 200265, 250-330, 250-415 and 300-415 centrifugal pumps

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Kazakhstan – Silumin Vostok Ltd. e.g. NSL100215 centrifugal pumps

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Poland – Envirotech, e.g. NSL125-265 centrifugal pumps

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Czech Republic – Unitherm S.R.O. e.g. NSL300525 centrifugal pumps

DESMI has also supplied pump solutions for District Heating projects in many other countries, e.g. Iceland, the Baltic Republics, Hungary, Mongolia etc. More than 500 District Heating project supplies recorded in our archives. DESMI is a member of the following energy related associations a.o.: • Danish Board of District Heating (DBDH) • Confederation of Danish Industry (DI) Danish Energy Industries Federation • Danish Energy Solutions • Lean Energy Cluster • FIF Marketing (D.H. Organisation) • CHPA UK (Combined Heat & Power Association) • State of Green

• China District Heating Association • German CHP/District Energy Association – AGFW

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Aalborg Municipality - District Heating, Denmark – Case Story

DESMI has over several years supplied its energy efficient pump solutions to Aalborg Municipality’s District Heating section. Aalborg Municipality is Denmark’s 3rd biggest municipal area with a population of 203,500 (2013). As the district heating infrastructure in Aalborg is optimized, new pumps were needed to supply the north-eastern part of Aalborg City.

directly from the transmission ring will reduce the distance to the consumers by more than 3 km, hereby reducing the power consumption by pumps and heat losses in the pipes. The installation of DESMI NSL200-415 pumps (90 kW at 50 mLC) took place at two different areas: At the District Heating Central (Gasværksvej) and at the Rærup Pumping Station

A big junction of the transmission pipeline in the center of the city was a part of the legacy from the early days in the district heating grid. Bypassing this old junction and supplying the hot water

Rærup Pumping Station

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Harbin Daoli - District Heating, China – Case Story Daoli is one of the seven districts of Harbin, the largest city in North East China with approx. 11 million inhabitants. It is known for its bitterly cold winters and is often called the “Ice City” – so therefore the city welcomed this district heating project, where ABB provided the turnkey supply, which included energy efficient pump solutions from DESMI. The hot water produced by Harbin Hua Neng District Heating Co. Ltd. was used as primary heating resource. Water from the pre-insulated underground pipes was transferred to 156 selfoperating heating exchanger units instead of the traditional boiler room and then directly fed into residential radiator installation, covering an area of 17.58 million square meters. When the installations were completed in 2007 the project was the largest district heating project to date in China. Under the contract, ABB provided 96.1 km of preinsulated pipes, 378 frequency converters, 252 secondary network circulation pumps, 252 heat exchangers, 2000 instruments that are used to supervise and control the network and substations, as well as a SCADA system with more than 10,000 signals. ABB also helped the customer rebuild 42 turnkey substations and include them in the SCADA system.

DESMI & ABB solution

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• • • • • •

In total, 252 pumps supplied by DESMI. Coal saving 300,000 tonnes per year. CO2 emissions decreased 500,000-550,000 tonnes per year. Heat supply 17.58 million m2 for 1 million residents through 156 sets of automatic controlled heat exchanging stations. In cold winter with -25o C external temperature, residences enjoy 18o C spring room temperature; High efficiency, low noise, frequency control and individual pump solution from DESMI

Upon completion of the project Harbin’s Vice Mayor added the following comments about the project: “Although northeast China’s Heilongjiang Province experienced its strongest snowstorm in 56 years last winter, citizens in Harbin, the nation’s northernmost provincial capital city, enjoyed a comfortable winter, sitting in warm homes and viewing the snow through their windows. Thanks to a district heating project by the Harbin government, the Danish government and ABB, our people enjoyed a warm and comfortable winter,” said Wang Shihua, vice-mayor of Harbin. “As a key project in Harbin in the 11th Five-Year Plan, the district heating project not only improves the heating system in a cold city, but also makes a huge contribution to an environmentally friendly society.”

Harbin - The “Ice city”

KyivEnergo - District Heating, Ukraine – Case Story KYIVENERGO provides the capital of Ukraine with electricity and heat combining the processes of production, transmission and distribution.

Characteristics of new supply:

Heat is generated by KYIVENERGO at TEC-5, TEC-6 as well as in heat supply stations and boiler plants. The total heat source capacity is 8,500 Gcal/hr. Heat is transferred through the heat pipe network of total length around 2,300 km.

• • •

DESMI got involved with upgrading of existing Pumping Station for District Heating, in cooperation with the turnkey supplier ABB.

• •

Nominal flow for each DESMI NSL pump = 1,250 m3/h Nominal head = 36 m and max. head = 50 m New equipment installed (DESMI pumps with ABB motors and ABB frequency converters) New equipment increased efficiency to 95% Nominal flow 1388 m3/h for minimum annual running time 3960 hours (conservative estimation of heating season by 5.5 months)

Calculations are made as follows: - kWh = kW X hours in operation

Flow rate 1388 m3/h New DESMI & ABB solution Old pump installation Savings in kWh

Consumption kW

Total kWh per year

86

340,560

482

1,908,720 1,568,160

Total kWh savings per year 1,568,160

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District Cooling

District Cooling District Cooling is an efficient and environmentally friendly utility service, which provides chilled water from a centralized cooling plant through a network of pipes to multiple residential, industrial and commercial buildings for air conditioning purposes. District Cooling is simple and clean. It creates a cool, efficient indoor climate, without the need for bulky refrigeration equipment and noise in or near residences. The supply is assured year-round with minimal maintenance needed, which is reflected in reduced operating costs and lower investment requirements. Cooling water origins from either: • • •

Free cooling and pre-cooling (seawater) Absorption cooling (e.g. steam) Compressor-based cooling

• • • • • • •

Reduced air pollution/Decreased emissions of ozone-depleting refrigerants Minimum maintenance requirements, more privacy and security Better building aesthetics - no bulky outdoor equipment Freeing up of roof tops/ outdoor space Average industrial equipment lifespan is 30 years versus 15 years for commercial equipment District Cooling systems consume far less energy than chillers Higher energy utilization and reduced energy consumption Enables owners to conserve energy, improve operating efficiency and protect the environment while simultaneously lowering government spending by reducing electricity infrastructure

The following are just a few of the numerous benefits of using District Cooling:

Source: Emicool UAE

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DESMI provides pumping solutions both for water intake (e.g. seawater), centralized cooling plants as well as the piping network.

Increased energy efficiency Better quality of cooling Reliability in the excess of 99.9% Elimination of noise by eliminating chillers in buildings (i.e. on roof tops)

Source: Kjell Thorsson/Fortum

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DESMI Competences - District Cooling

Long experience A lot of DESMI’s competences for District Cooling (DC) relates to our very long experience within District Heating (DH) as well as marine pump applications.

•

We provide pump solutions, not just pumps.

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We adapt our pump solutions to specific customer requirements.

DC has lots of similarities to DH. Our 100 years’ experience within the marine and offshore sector has given us outstanding technical competences, e.g. related to seawater applications as well as cooling applications. This background is fundamental for our DC capabilities.

•

We supply competitive solutions, technically as well as commercially.

•

The pump designs are based on DESMI Proven Technology from many years of experience within District Energy.

In brief DESMI’s pump competences include solutions for Cooling Plants, Transmission & Distribution Networks etc.

•

We provide customized energy efficient pumps.

•

We supply flexible solutions also related to motor specifications as well as other accessories, such as frequency converters etc. according to customer requirements.

•

Robust construction assists providing solutions for many applications.

Pressure ratings up to 25 bar.

DESMI has supplied for these District Cooling Projects among others: •

Denmark – Fynsværket Power Plant (Vattenfall) e.g. PVLN/ESL pumps.

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Korea – POSCO Pohang 1 & 2 – NSL80-265, 250-415 centrifugal pumps.

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Denmark – HOFOR (Copenhagen Energy Authority) e.g. several NSLV 300-415 pumps.

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Korea – Iljin Steel - NSL200-525, NSLD300-415 centrifugal pumps.

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Sweden – Process Pumpar e.g. NSL80-265, 100265, 125-330, 150-265, 150-215, 200-265, 250330, 250-415 centrifugal pumps.

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China – Novozymes Biotechnology Plant, Tianjin DSL300-320, 400-495 & NSL250-265, 250-415 centrifugal pumps.

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Czech Republic - Renetra NSL pumps.

•

•

Korea – Hanyang University – NSL150-330, 200330, 250-330, 250-265, 300-415 centrifugal pumps.

China – Novenco Hi-Pres Air Handling Equipment (WUXI) Co. Ltd, PVLN/ESL centrifugal pumps.

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United Arab Emirates - Dubai Metro (air cooling in the metro stations). E.g. NSL125-330 centrifugal pumps each with a capacity of 162 m3/h at 35 mLC.

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Korea – Doosan Heavy Industry – NSL150-415, 200-300, 200-415, 300-415 and 300-525 & DSL300-220 centrifugal pumps.

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Korea - Seoul SemiConductor, Ansan – NSL125415, 250-330 centrigual pumps.

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Dubai Metro - District Cooling, UAE – Case Story

The Dubai Metro is the world’s first districtcooled mass transit system, according to Stanley Consultants. A distribution network provides centralised cooling via pre-insulated, buried steel piping to all Dubai Metro stations. Five district cooling plants were built specifically for the Dubai Metro, with the following installed capacities: • • • • •

Al Rigga 10,000 TR Al Barsha 7,500 TR Jumeirah Island 7,000 TR Jebel Ali Industrial 4,400 TR Al Rashidiya 7,500 TR

A total of 52 km of piping was needed for the district cooling network. DESMI pumps were installed for air cooling purposes in Dubai’s metro stations.

Dubai Metro

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DESMI model NSL125330 with a capacity of 162 m3/h at 35 mLC were chosen for the installation. The pumps are mounted with a 30 kW motor. DESMI NSL125-330

Stanley consultants, who designed the project, emphasized that district cooling was particularly suited to the Dubai Metro. Not only did it reduce the electromechanical areas inside the stations, but it also reduced the total power connected and consumed by between 30% to 50%. This, in turn, reduced the total carbon footprint of the project. It also reduced the noise and vibration, as opposed to the alternate standalone solution of having roof-top air-cooled chillers and pumps.

Doosan Heavy Industry - District Cooling, Korea – Case Story

Korea – Cooling Application for Doosan Heavy Industry Factory Doosan Heavy Industry Changwon factory in Korea – a survey based on supply of nine DESMI NSL centrifugal pumps was conducted: Name of Scheme: “The improvement of System 6 of Doosan Heavy Ind. Co”. The installation of the NSL pumps from DESMI in place of previously installed pumps of another brand brought Doosan Heavy Industry the following benefits: • •

A significant 35% annual energy saving in electricity costs, due to DESMI pumps being more efficient. A flow increase of 18%, due to the higher flow capacity of DESMI pumps.

Saving Electricity 35% Flow Increase 18%

• •

A 50% space saving, due to DESMI pumps being more compact. A noise reduction of approx. 15% by using the DESMI pumps.

The survey concluded that DESMI pumps had a far better energy efficiency, involved less maintenance costs, saved important floor space and were easier to install. Now a total of 30 DESMI pumps are running in this factory.

Noise Reduction 15% Power Saving 35%

Space Saving 50%

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Novozymes - District Cooling, China – Case Story DESMI pumps used as cooling pumps in Novozymes Biotechnology Plant, Tianjin, China Novozymes has invested in additional enzyme granulation capacity at its Chinese Tianjin plant. DESMI Pumping Technology (Suzhou) Co., Ltd. located in Suzhou, China, is proud to be the preferred supplier for Novozymes Tianjin plant with a supply of 12 pumps for their expansion project in 2009. DESMI A/S in Denmark supplied another 12 pumps to Novozymes back in 1998 through the EPC ABB Engineering Ltd, and these pumps have now been in operation for more than 15 years without need for any maintenance. Three DSL400-495A/a, four DSL300-320A/a, two NSL250-265A/a, two NSL250-415A/a and two NSL200-265/A16 pumps for cooling tower applications were supplied to Novozymes. The capacities range from 250 m³/h to 3000 m³/h, and pressures ranging from 15 to 38 mLC. Seven DSL double-suction vertical in-line centrifugal pump units are used as cooling water circulation pumps, whereas five NSL vertical in-line pump units are used as chilled water primary and secondary pumps. Based on our experience, DESMI had a clear understanding of cooling tower pump operations and the principle of operating two or more pumps in parallel.

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The varying temperature between seasons and between day and night time operations requires the capacity for cooling and chilled water pumps to vary with the fluctuation of temperature based on the following formula: Q x (Tout – Tin) x Factor = P = Q x (Tin – Tout) x Factor. Therefore, we suggested that the customer used a variable frequency drive for the cooling water pump with the motor operating at 55 Hz for peak capacity. “With the optimization of the pump selection, DESMI has offered us the best solution for saving power. The motor power has changed from 1400 kW for four pumps to 1200 kW for three pumps using variable frequency drives that will save 200 kW* 8000hr = 1.6 million kWh per year, equal to 1.6 million RMB in savings per year based on 1kWh=1RMB. Novozymes has used DESMI pumps for many years. We have ONLY had good experiences with DESMI pumps and will, whenever a pump need occurs, be in contact with you.” – Bjarne Ege Hundstrup, Technical Service & Maintenance Manager, Novozymes Biotechnology Ltd.

DESMI Pump Solutions - District Energy

Vertical In-line Centrifugal Pumps - Type NSL also available as End Suction Pump.

DESMI NSL

DESMI DSL

DESMI ESL

Pump selection programme available for download All centrifugal pumps can be selected by our DESMI Pump Selection Programme called WinPSP. The program is available for download from www. desmi.com The program can be used by designers, operators, service providers and anybody who wants pump information. Find curves for existing pumps, obtain GA drawings for initial designs and compare efficiency, motor power, NPSH and other data to find the right pump - Alternatively contact DESMI to obtain the required information.

DESMI centrifugal pumps installed at Novozeymes Tianjin plant. 19

Your DESMI contact for District Energy

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DESMI AS

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Tagholm 1

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You can read more about our utility solutions at www.desmi.com or send your email to [email protected] MARINE & OFFSHORE

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INDUSTRY

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UTILITY