Presentatie 4TH GENERATION THERMAL NETWORKS AND THERMAL CASCADING

4TH GENERATION THERMAL

NETWORKS AND THERMAL

CASCADING

Paul Booij

OUTLINE

Part 1

The (technological) future of district heating networks

How to design a future district heating network

Part 2

Low temperature district heating

Cascading

2 | 4th Generation thermal networks and thermal cascading 12 February 2016

12 February 2016

Source: H. Lund, S. Werner, R. Wiltshire, S. Svendsen, J. E. Thorsen, F. Hvelplund and B. Vad Mathiesen, in Energy, vol. 68, 2014.

“4th Generation District Heating (4GDH), Integrating smart thermal grids into future sustainable energy systems”

4th Generation DHCN

Efficient distribution at low

temperatures

Coordination of multiple,

decentralized, (uncontrollable)

sources

Larger role for thermal (seasonal)

storage

Integration with other energy

infrastructures (electricity, cooling)

Smart!

Operate Forecast/

feasibility

Conventional DHCN development (static)

From big picture to operational details based on peak load

Plan Design

Control

algorithms

Forecasting/

feasibility

tools

Planning

tools Design tools

Conventional DHCN is expensive

CAPEX/OPEX

Dimensioning for worst case peak

loads (with additional margins)

Design for single source networks

with static, high temperatures

Topologies based on traditional

experience, rules of thumb and tools

The key of 4th generation DHCN:

Smart controllers

Smart control with cascading benefits: game changer

System-wide optimization (smart control): coordination of sources, storage and consumers

Example: peak shaving by demand management in a new district with modern houses

33% peak shaving

Plan Design Operate

Control

algorithms

Forecast/

feasibility

Forecasting/

feasibility

tools



Planning

tools Design tools

4th Generation DHCN development (dynamic)

Smart thermal operation influences forecasting, planning and design


CAPEX/OPEX







Smart control enables system-wide

optimization, which is leveraged into

efficient design

Holistic approach over all network

time scales, from minutes

(operation) to decades (investment)

Lean, dynamic networks with lower

CAPEX and OPEX

Peak

shaving

Plan Design Operate

Control

algorithms

Forecast/

feasibility

Forecasting/

feasibility

tools



Planning

tools Design tools

4th Generation DHCN development (dynamic)

Smart thermal operation influences forecasting, planning and design


CAPEX/OPEX







Smart control enables system-wide

optimization, which is leveraged into

efficient design

Holistic approach over all network

time scales, from minutes

(operation) to decades (investment)

Lean, dynamic networks with lower

CAPEX and OPEX

Local

balancing

Controlled Hybrid Energy Systems Simulator

A simulator for hybrid energy systems including their operational control algorithms.

Develop, test and assess new system concepts with quantified costs, sustainability and reliability

Tooling: (1) planning & design - (2) operational control of heating/cooling networks

CHESS

LOW TEMPERATURE DISTRICT HEATING

Renovated/new buildings:

- Lower heating demand at lower temperatures

- Higher cooling demand at higher temperatures

From a network point of view

Advantages

Lower transport losses

Use of return water as supply (cascading)

Low return temperature back to source (greatly increases efficiency of geothermal sources)

Disadvantages Trends

Higher pumping costs Decreasing electricity prices?

Larger pipe diameters Flexible piping low temperatures at high flow rates

12 February 2016 11 | 4th Generation thermal networks and thermal cascading

LOW TEMPERATURE DISTRICT HEATING


From a system point of view

Advantages Trends

Waste heat sources Green companies/industries/data centers

Future scarcity of high temperature waste heat

Efficient heat pumps Innovation and competition

Power2Heat Increase of wind/solar power

Efficient storage

Shallow geothermal storage/heating Synergy with increase in cooling demand/networks

Building as a buffer

Heat prosumers Independent civilians

Solar collectors, thermo-chemical storage

Disadvantage Challenge

High temperature consumers in a low temperature system

CONCLUSION

New technology will usher in a new (4th) generation of district heating/cooling systems, which is

More sustainable

More competitive

A crucial part of the overall energy system

Development of such systems requires a new paradigm, with more emphasis on

Design for operation, instead of operation based on design

Small scale clusters of producers/consumers/prosumers (local initiatives)

Transition to 4th generation district heating starts with(in) low temperature clusters!


WORKSHOP – 2 CASES

Glastuinbouw Aalsmeer

Aansluiten van 600 ha

glastuinbouw op het

warmtenet

Lage temperatuur ca. 60 °C


Nieuwbouw IJburg

Aansluiten van 9400 nieuwbouw

woningen op het warmtenet

Ook lage temperatuur

TE BEANTWOORDEN VRAGEN

Technisch:

Welke temperatuur?

Wat is de totale warmtevraag?

Hoe aan te sluiten op het net?

Mogelijkheid tot buffering?


Overig:

Belangrijke stakeholders?

Belangrijkste kostenposten?

Mogelijke bezwaren?

Open vragen?

CONTACT

12 February 2016

Willem van den Bosch [email protected] +31 6537 823 02

Paul Booij [email protected] +31 6150 08276

Presentatie 4TH GENERATION THERMAL NETWORKS AND THERMAL CASCADING

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