4th generation dh products, pilot projects and …€¦ · products, pilot projects and market...

Jan Eric Thorsen

Director, District Energy Application Centre &

HEX Research

Danfoss District Energy

4th Generation DH –Products, pilot projects and

Market opportunities

DBDH Member meeting June 12, 2014, Nyborg – Danfoss District Energy

The contents:

1. Some few words about the 4th generation DH system

2. Danfoss concepts, some products and pilot projects

3. Considerations on Markets for 4DH

4. Concluding Remarks


The Generations of DH


Examples of products/Solutions

MPHE



- Comfort level is set by consumer (cost/comfort trade-off)

- Potentially 2-10 hours of load can be shifted, depending on heat load

and building type

Electric spot price DH spot price


Pilot Projects

Period: 1:2007-2008 2:2009-2010 3: 2011-2012

Project: Supported by the Danish Energy Authority's Energy Research Programme (EFP2007) “Development and Demonstration of Low-Energy District Heating for Low-Energy Buildings”, (EUDP2009): ”CO2-reductions in low energy buildings and communities by implementation of low temperature district heating systems. Demonstration cases in EnergyFlexHouse and Boligforeningen Ringgården”. And “Full scale demonstration of LTDH in existing buildings”, (EUPD2011)

Partners:

DBDH Member meeting June 12, 2014, Nyborg – Danfoss District Energy9

9

41 flats, area of 87m2 and 110 m2

Designed to Low Energy Class I

Typically elderly people or young families

are living in the flats

Heating power 2.2 to 2.6 kW

+ 0.2kW due to higher room temperature

(radiators and floor heating in

bathrooms)

DHW power 0.5 (3.5 kW) and 32kW

Area 1

ST

Area 2

HE

2. Project 2009 – 2010:The site in Lystrup


The site in Lystrup, DK


The Energy Balance for Lystrup, DK

Delivered energy an DH net: 287 MWh/y

Yearly energy consumption flats: 238 MWh/y

DH net energy loss: 49 MWh/y

Shunt pump energy: 2.5 MWh/y

Extrapolated values outside week 26-47

Main point: 17% distribution energy loss !

In case a ”normal” District Heating net was designed, loss would have been 41%.

(Temp. 80/40, single pipes class 2 DH pipes, leading to 200MWh/y)

In reality the absolute DH net loss is 4 times higher !


3. Project 2011 – 2013: Sønderby, DK

Area with 75 single-family houses from 1997-98:

Average heated floor area: ~ 150 m2

District heating consumption:

6-20 MWh/year per house, Floor heating

Existing substations with hot water tank

Old network:

Sub-net owned by the house owners

Connected to utility through heat exchanger

District heating supply temperature: 70-75C

Single street* and service pipes** (Pex)

Large network heat loss (43%)

* λ=0.038 W/mK, without diffusion barrier (measured by DTI)

** λ ~ 0.030-0.032 W/mK, without diffusion barrier (standard technology of that time


Sønderby, Høje Taastrup, Denmark

New pipe network, twin pipes, series 2 & 3, λ = 0.022-0.023 W/(mK)

75 low temperature house substations installed in single-family houses

New 3-pipe supply connection demonstrated:

80% heat supply to the Sønderby network comes from main return water!

50-55°C in supply to the network is sufficient

Heat loss in the Sønderby network reduced from 43% to 15% (2012) !

Concept and Guideline

Low temperature concept demonstrated – new and existing houses

Draft guideline available.

3. Project 2011 – 2013: Sønderby


District Heating is concentrated in 3 main regions, with huge differences in network conditions, thus different potential for 4G

China

2-3G networks with potential in network renovation

Limited potential for 4G- single source DH - no control on building level - constant flow – no DHW – high design temp.

App. 30% DH penetration

Russia

2-3G networks, with large potential in network renovation (65-75% of district

heating fixed assets require replacements)1)

Limited potential for 4G - Central DHW/HE, - no control on building level -constant flow – high design temp.


1) Source: Ministry of Energy

of the Russian Federation, 2010

Europe

3G networks, potential in certain countries for development of 4G networks (however more project driven than country driven at the time being)


Markets for 4DH


Europe, is the region with the biggest potential for development of 4G networks- however it is more project driven than country driven

FINLAND• Mature DH market ≈

50% DH pen.

• Traditionally high

temp. networks

DENMARK• Mature DH market ≈

62% DH pen.

• Several 4G projects

SWEDEN• Mature DH market ≈

48% DH pen.

• Traditionally high

temp. networks


GERMANY• DH market ≈ 12%

DH pen.


AUSTRIA• Immature DH

market ≈ 21% DH

pen.

Trends in the markets;

• Low temperature

• Electronification and connectivity (incl. monitoring)

• Variable sources for DH (also 2 way DH)

• Understand DH as a part of the entire energy system

• Focus on energy efficiency

Markets for 4DH


Markets for 4DH

Nordic + CER (biomass)

Europe


Concluding Remarks

District Heating has a bright future, next major step is towards

4th Generation DH

This implies that DH has to develop

Main issue is to show that its possible

The way forward is to do more 4DH related (pilot) projects

And to share the vision across the energy sector

4th generation dh products, pilot projects and …€¦ · products, pilot projects and market...

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