Decentralised SDH Systems Swedish Experience Jan-Olof Dalenbck - - PDF document

▶
decentralised sdh systems swedish experience
SMART_READER_LITE
LIVE PREVIEW

Decentralised SDH Systems Swedish Experience Jan-Olof Dalenbck - - PDF document

Mar 25, 2023 499 likes •681 views

Decentralised SDH Systems Swedish Experience Jan-Olof Dalenbck Professor CHALMERS CIT Energy management AB Partner: SDH+ SDH - Malm - April 9, 2013 1 Jan-Olof

slide-1
SLIDE 1

SDH - Malmö - April 9, 2013 1 Jan-Olof Dalenbäck

Decentralised SDH Systems – Swedish Experience

Jan-Olof Dalenbäck

Professor CHALMERS CIT Energy management AB Partner: SDH+

SDH - Malmö - April 9, 2013 2 Jan-Olof Dalenbäck

DH operators make their own SDH plants .. and sell solar boosted heat .. ESCO‘s / Building owners / build solar heating plants connected to DH systems .. “Contract between plant owner and DH provider!“

SDH .. Operators .. Applications ..

2

slide-2
SLIDE 2

SDH - Malmö - April 9, 2013 3 Jan-Olof Dalenbäck

Block and District heating

100-70 °C 40-50 °C

SDH - Malmö - April 9, 2013 4 Jan-Olof Dalenbäck

Central SDH system

slide-3
SLIDE 3

SDH - Malmö - April 9, 2013 5 Jan-Olof Dalenbäck

Marstal District Heating - DK 18 000 sqm – 13 MWth

SDH - Malmö - April 9, 2013 6 Jan-Olof Dalenbäck

Distributed SDH systems

slide-4
SLIDE 4

SDH - Malmö - April 9, 2013 7 Jan-Olof Dalenbäck

Distributed SDH systems ..

Return 40-50 °C

SDH - Malmö - April 9, 2013 8 Jan-Olof Dalenbäck

Distributed SDH Plant in Graz

slide-5
SLIDE 5

SDH - Malmö - April 9, 2013 9 Jan-Olof Dalenbäck

Distributed SDH systems ..

  • Rather simple .. HX ..
  • Designed based on available area

and DH pipe dimensions ..

  • Should meet basic requirements for

pressure and temperature ..

  • Possible with different ownerships ..
  • O&M is a key issue ..

SDH - Malmö - April 9, 2013 10 Jan-Olof Dalenbäck

Grid-connected solar heat .. ?!

  • DH system – an infrastructure used to buy

and sell heat .. Why not solar heat ?

  • Solar and DH system - different voltage !?
  • Requires an agreement between the plant
  • wner and the DH provider ..
  • Nearby invented in EPBD ..!?
  • Possible to develop new business

models for DH operators ..?

slide-6
SLIDE 6

SDH - Malmö - April 9, 2013 11 Jan-Olof Dalenbäck

Background

  • 1st system in Skive, DK – 1994 ?
  • Several systems Bo01 in Malmö, 2001 ..
  • A number of systems in Graz, AT

– Operated by ESCO’s ..

  • Several new small systems in SE, 2002- ..

– Operated by building owners .. – Majority of systems in DH by E.ON ..?

SDH - Malmö - April 9, 2013 12 Jan-Olof Dalenbäck

Bo01 - Malmö

slide-7
SLIDE 7

SDH - Malmö - April 9, 2013 13 Jan-Olof Dalenbäck

Bo01 Malmö

Bo01 - Malmö

SDH - Malmö - April 9, 2013 14 Jan-Olof Dalenbäck

Kockum Fritid – Malmö - 2001

slide-8
SLIDE 8

SDH - Malmö - April 9, 2013 15 Jan-Olof Dalenbäck

Site built HX units

SDH - Malmö - April 9, 2013 16 Jan-Olof Dalenbäck

Malmö - 2006

Prefab HX units !!

slide-9
SLIDE 9

SDH - Malmö - April 9, 2013 17 Jan-Olof Dalenbäck

Malmö - 2008

SDH - Malmö - April 9, 2013 18 Jan-Olof Dalenbäck

Vislanda - 2009

slide-10
SLIDE 10

SDH - Malmö - April 9, 2013 19 Jan-Olof Dalenbäck

Timrå - 2009

SDH - Malmö - April 9, 2013 20 Jan-Olof Dalenbäck

Karlstad – 2009

slide-11
SLIDE 11

SDH - Malmö - April 9, 2013 21 Jan-Olof Dalenbäck

Göteborg – 2010

SDH - Malmö - April 9, 2013 22 Jan-Olof Dalenbäck

Stockholm – 2010

slide-12
SLIDE 12

SDH - Malmö - April 9, 2013 23 Jan-Olof Dalenbäck

Karlstad – 2011

SDH - Malmö - April 9, 2013 24 Jan-Olof Dalenbäck

Supervision via Internet Prefab units

slide-13
SLIDE 13

SDH - Malmö - April 9, 2013 25 Jan-Olof Dalenbäck

Evaluation of 22 plants

  • Misc. background, different contracts,

different O&M ..

  • Different orientations .. shadowing ?
  • Different collectors & tilt ..
  • Different DH return temperatures ..
  • Rather small ..
  • Results in different yields ..!
  • But .. 100-300 kWh/a.m2

SDH - Malmö - April 9, 2013 26 Jan-Olof Dalenbäck

100 200 300 400 500 200 400 600 800 1 000 1 200 Collector (gross) area [m2]

Annual yield [kWh/m2]

E.ON Others Malmö

slide-14
SLIDE 14

SDH - Malmö - April 9, 2013 27 Jan-Olof Dalenbäck

Malmö

10 20 30 40 50 60 70 80 J F M A M J J A S O N D J F M A M J J A S O N D

Monthly yield [kWh/m2] 2011-2012

Augustenborg Stensjön Heleneholm SegePark

SDH - Malmö - April 9, 2013 28 Jan-Olof Dalenbäck

Other plants - Misc. sites

10 20 30 40 50 60 70 80 J F M A M J J A S O N D J F M A M J J A S O N D

Annual yield [kWh/m2] - 2011-2012

Gårdsten Molkom Örnen Vislanda Måsta Glottran Nya Järpen Ödåkra

slide-15
SLIDE 15

SDH - Malmö - April 9, 2013 29 Jan-Olof Dalenbäck

Experiences !

  • Different conditions .. !
  • Some poor contracts .. ! Low cost !
  • Some poor operation .. !
  • Some poor O&M .. !
  • Misc. problems .. !
  • Lack of knowledge .. !
  • Lack of interest .. !

SDH - Malmö - April 9, 2013 30 Jan-Olof Dalenbäck

Recommendations !

  • Better conditions .. !
  • Appropriate contracts .. !
  • Improved controls .. !
  • Appropriate O&M .. ! (DH provider?)
  • > 300 kWh/a.m2 .. !
slide-16
SLIDE 16

SDH - Malmö - April 9, 2013 31 Jan-Olof Dalenbäck

Acknowledgement

  • Financial support by the Swedish

District Heating Association

  • Evaluation team:

Peter Kovacs, SP Techn. Res. Inst. Per-Erik Andersson-Jessen, A&H Gunnar Lennermo, Energianalys Göran Johansson, Armatec (Per Rosén, E.ON)