Meet the Grundfos GIANTS 180 MW of District Heating from Danish Verdo

Overview_TEXT

Overview

When Verdo needed to replace its main pumps, the plant chose a solution that involved bigger pumps, lower supply-pipe temperature and guaranteed energy savings.

The right main pumps
Main pumps are at the very heart of any district heating system and efficiency, strength and reliability is everything. When Verdo – a completely bio-fuelled CHP plant in Denmark – needed to replace its main pumps, the plant seized the opportunity to renew its fleet altogether.

Project Manager Jesper Thillemann Petersen was in charge of choosing the new solution, and he explains: “We supply district heating 365 days a year to more than 33.000 households, and our district is growing. We have a big responsibility towards existing customers, future customers and the environment. That means we have a very clear idea of what we want from our main pumps: extreme reliability, a strong track record, and a high hydraulic efficiency”.

The Grundfos solution
Grundfos was able to offer Verdo the perfect combination of size, reliability and efficiency. The plant was supplied with some of Grundfos’ largest HS pumps, complete with IE3 motors for high efficiency, top pull design for easy maintenance and double volute design for completely balanced hydraulics. The plant is now ready to supply the growing city of Randers with reliable, green district energy for decades to come.

The Grundfos delivery
PRODUCTS:
»» 10 HS and 2 NKG pumps
»» Combined capacity: up to 9700 m3/h in PN25
»» Motors: up to 630 kW

LOWER SUPPLY-PIPE TEMPERATURE:
»» Winter: from 95 °C before replacement to 78 °C after replacement
»» Summer: from 84 °C before replacement to 74 °C after replacement

INCREASED CAPACITY:
Verdo’s thermal supply capacity has been increased from 40 MW to 60 MW to handle the expected growth of one of the many districts that Verdo serves
with district heating.

Verdo facts
Verdo is a green energy provider based in Randers, Denmark. It is determined to be the greenest, most efficient energy provider in the country, which is
why it is fuelled exclusively by biofuels in its CHP plant at Randers. Verdo is also one of the biggest traders in Europe within different types of biomass
such as wood, cocoa pellets and olive stones.

Capacity: Net 48 MW power and 140 MW thermal energy, plus 133 MW capacity in form of peak load / back up boilers
Customers: 54.000 power customers, 33.000 heating customers
Pumps: With more than 80 pumps ranging from 0,12kW up to 630kW, pumps play a central role in the stability, reliability and efficiency of Verdo.

Grundfos pumps at Verdo
MAIN PUMPS
»» 10 HS up to HS350-250-630/623 (2400m3/h-160m/630kW)
»» 2 NKG200-150-400/414 (740 m3/h /60m/110kW)

WATER SOOT BLOWER
»» 1 CR10-18 (10m3/h-180m-kW)

COOLING PUMP FOR SPREADER SYSTEM
»» 2 CR1S-3 (0,9 m3/h-18,2m-0.37kW)

MAKE UP WATER PUMPS FOR NETWORK AND BOILERS
»» 4 CR45-4 (45 m3/h-102,4m-15kW)
»» 4 CRE15-05 (17 m3/h-70,6m-4kW)

FIRE PUMP
»» 1 NB32-250 (25,3 m3/h-62,6m-11kW)

AIR-VENT PUMP
»» 2 TP170-100/4 (93 m3/h-15,4-5m,5kW)

LULL HEAT PUMPS
»» 2 MAGNA65-120F (39 m3/h-12m-0,9kW)

BIO-OIL PUMPS
»» 2 CRNE10-06 (10 m3/h-61,2m-2,2kW)

WATER TREATMENT SYSTEM
»» 4 UP20-45 (3,8 m3/h-4,2m-0,12kW)
»» 3 CRN5-5 (5,8 m3/h-33,5m-0,75KW)
»» 3 CRNE3-7 (3 m3/h-44,8m-0,55kW)
»» 4 KP
»» 1 CR 15-12 (17 m3/h-169m-11 kW)

DE-MISTER PUMPS

»» 4 CR32-5 (40 m3/h-102m-11kW)





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Topic:

Meet the Grundfos GIANTS - DANISH VERDO

Location:

DENMARK

Company:

VERDO

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If you need a similar solution, please contact us for further information.