cool heat grids energy/eve… · zomer heating demands cooling ... microsoft powerpoint -...

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20190115_Lunch Lecture Urban Energy Platform & Thermo‐X Platform_Cool Heat Grids_Sabine Jansen 1

By Sabine Jansen, TU Delft Faculteit BouwkundeDelft, January 15th 2019

Cool Heat GridsLunch Lecture Urban Energy Platform & Thermo‐X platform TU Delft

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January 15th 2019 | “Cool Heat Grids” | Lunch Lecture Urban Energy Platform & Thermo-X platform | Sabine Jansen 2

• Background: alternatives for natural gas

• Why ‘Cool heat grids’?

• Properties and possibilities

– Sources

– Temperature levels

– Scales

• Example projects

Content

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Background: Alternatives needed for heating with natural gas


Electrical heating (including infrared)

Heat pumps

Heat gridsGreen gas or hydorgen Electricity Biomass

Alternative heating solutions for the built environment

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Alternative heating solutions for the built environment

Infrared & electrical heaters

Heat pumps

Hot waterGreen gas ElectricityBiomass

Resources:

Individual

Collective

Energycarriers:

Hydrogen

Sabine Jansen TUDelft 2018


For heat grid of 150 households..(in Samso, Denmark)

Biomass

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> 70ºHigh Temperature(direct supply of hot

water)

Temperature levels (our definitions)

45‐70ºMedium

Temperature(additional solution

for hot water)

25‐45ºLow Temperature

(direct space heatingBooster HP for DHW)

10‐25ºUltra low

Temperature(heat pump for space heating and DHW)

> 90ºTraditional district heating


> 70ºHigh Temperature(direct supply of hot

water)

Temperature levels (our definitions)

45‐70ºMedium

Temperature(additional solution

for hot water)

25‐45ºLow Temperature

(direct space heatingBooster HP for DHW)

10‐25ºUltra low

Temperature(heat pump for space heating and DHW)

> 90ºTraditional district heating

[Lund et al, 2014, 4th Generation District Heating (4GDH)Integrating smart thermal grids into future sustainable energy systems]

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Existing high temperature heat grid


AIM:Locally balanced neighbourhood

energy systems

Ramplaankwartier Bestaande bouw

StrandeilandIn ontwikkeling

Example from Smart Urban Isle Project

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Case study Strandeiland

heat

• 8000 new dwellings• 150.000 m² non residential buildings


Energy demand

Space heating

Hot water

cooling

Building related

electricity

User related

electricity

Heat Cold Electricity

Energy demand

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Energy potentials

1. PV (Photo Voltaic cells)

2. PVT (PV + thermal energy)• PVT with low temperature (ATES)• PVT with high temperature

3. PT (Solar Collectors; only heat)

4. STW = small wind turbine5. WT = wind turbine (3 MW, not local)

6. Thermal energy from waste water 7. Thermal energy from surface water

8. Energy from waste & biomass


Energy demand and energy potentials Strandeiland

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1. High temperature

2. Ultra low temperature

3. Low/ Medium temperature

4. Individual heat pumps

Potential energy concepts


Energy Performance Indicators

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• Aim: To develop (ultra) low temperature smart thermal heat grids that connect sources and demands.

KoWaNet project ‐ Koele Open Warmtenetten

Project partners


• Temperature levels

• Monthy / daily, hourly profiles

• Spatial levels (building / urban block/ district)

Important parameters of Cool Heat grids

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Temperature levels

Heat demand Cold sources Storage

Cooling demand Heat sources

1. WKO net (regenerated)Principle: Heat delivered with a heat pump; passive heating not possible

13‐24ºC

8 ‐12 C

TU Delft 2018

Open WKO

12º 5º

Restwarmte

Regeneratie warmte in zomer

HEATING dem

ands

COOLING dem

ands

PVT

Bijvoorbeeld:Regeneratie

koude in winterPassief

verwarmen nietmogelijk

Warmte

pomp

Warmte

pomp

Open WKO

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Heat demand Cold sources Storage

Cooling demand Heat sources TU Delft 2018

Open WKO

12º 5º

Restwarmte

Regeneratie warmte in zomer

HEATING dem

ands

COOLING dem

ands

PVT

Heat

pump

Heat

pump

ATES

3. LT warmtenet net (op basis van enkele warmtebronnen op ca 35 graden)Principe: Ruimteverwarming kan direct; tapwater met BWP; koeling via HT koeling kan passief. 2 leidingen.

30‐40ºC

20‐25 C

No passive cooling

Temperature too low

Heat

pump

Bijvoorbeeld:Regeneratie

koude in winter


• Space heating and cooling:– Cooling demand = heat supply & Heat demand = cold supply– Profiles and temperatures depend on building functions

• Cooling processes & waste heat– Data centers, Supermarkets, ..– Waste heat from cogeneration / power production

• Solar thermal– Solar Collectors– PVT– Road collectors

• Greenhouses• Water: Surface water, Waste water, Drinking water (TEO TEA TED)• Unconventional sources (see Plan Heat Project www.planheat.eu)

– Small industry, metro station, ..

Temperatures and supply/demand profiles

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Temperature & profile of thermal sources

Grey water and surface water Strandeiland case


Temperature of thermal sources

Thermal output of PVT collectors (in MJ/m² per year), depending on ingoing collector temperature (source: Triple Solar gelijkwaardigheids‐verklaring)

Thermal output from solar PVT collectors

Ingoing collector temperature

Total yield in GJ/year per m²

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Spatial levels

Spatial levels based on MIJNWATER concept

Cluster E‐centrale

Backbone for exchange between clusters and seisonalbalance though the Minewater

Gebouw E‐centrale

WoningE‐centrale

gebouw

Woon‐eenheid

City UnitCluster Urban Block Building / street

HP Booster

Waste heat

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Stad Wooneenheidcluster wijk gebouw

HP Booster

storage

City UnitCluster Urban block Building/street

Heat pump

ATES

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Heat pump

ATES

Heat pump


ATES

Heat pump

Design system based on: Location of the available sources Energy (efficiencies, distribution and storage losses) Costs Governance / ownership

Work in progress:


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Haarlem Case Study

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January 15th 2019 | “Cool Heat Grids” | Lunch Lecture Urban Energy Platform & Thermo-X platform | Sabine Jansen

Total demand & potential supply (Haarlem case)

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Stad Wooneenheidcluster wijk Building/street

Heat pump

ATES


Decentralised supply of low temperature heat

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Low temperature demand?

Jan Feb March April May June July Aug Sept Oct Nov Dec

• Original heat demand• Heat demand after insulation

measures


Cool heat grids enable exchange of energy and use of sustainable sources

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Questions?

Thank you for your attention!

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