Energy from waterOpportunities for public water utilities

Oktober 11 2010

Ir. Stefan Mol - Waternet

Agenda

• Why?• Why me?• What about them?• Who’s next?

• Case green gas• Case ATES on the Dam square• Case ATES and tapwater (Diemen)• Case ATES and industrial water (Schiphol airport)

Why?

Why me?

tap water

sewagerivers, lakes

cookingcoolinglaundryrelaxingdrinkingwateringtransport

livingproductionwashing

constructionFfre fighting

heatingswimming

rain

groundwater

Energy from water

hot and cold water network

ground water

aquifers

surface water

drinking & industrial

water network

waste water

system

Water flows

Energy from water

organic energy

thermal energy

other

hot and cold water network

ground water

aquifers

surface water

drinking & industrial

water network

waste water

system

Types of energy

Energy from water

organic energy

thermal energy

other

cold

heat

biomass & biogas

blue energy

biofuel from algae

flow

hot and cold water network

ground water

aquifers

surface water

drinking & industrial

water network

waste water

system

high pressure

Possibilities

Energy from water

organic energy

thermal energy

other

geothermal power

heat pumps

cold

heat

biomass & biogas

digestion, purification

heat exchangers

blue energy

biofuel from algae

ATES

turbines

flow

hot and cold water network

ground water

aquifers

surface water

drinking & industrial

water network

waste water

system

high pressure

Harvestingtechniques

Water cycle potential

Source capacity (kton CO2-eq/yr)rivers, lakes 50sewage organic energy 10sewage thermal energy 140in home heat recovery 100groundwater 50 tap- and industrial water 50total ~400Amsterdam needs ~3000 (in 2025)

Roof scan Amsterdam

What about them?

energy use in the water cycle

0 500 1000 1500 2000 2500

hot water in households

new sanitization

innovative waste water treatment

conventional waste water treatment

kWh per household / year

net energy use reduction or gain

In home heat recovery

Costs: € 400,-Savings: € 125/yr

Case green gas

Biogas in CHP

11 kton CO2/yr

Cars on Green Gas

Cleaner air

Case ATES on the Dam square

Case ATES on the Dam square

C

A

B

Shared serviceCO2 reduction

Less energy costsLess technical spaceHigh performanceMore comfortBetter energy score

Case ATES and tap water

weespertrekvaart

centrumDiemen

spoorweg

A1

Ready in 2013

• 1200 houses• school• offices• restaurants• utilities

Case ATES and tap water

Regeneration of an ATES system with surplus heat from tap water

Case ATES and industrial water (Schiphol airport)

• 2 MW continuous cooling: + 0,4 °C• Regeneration with winter cold

Temp WRK I

0

5

10

15

20

25

01-01-2009 20-02-2009 11-04-2009 31-05-2009 20-07-2009 08-09-2009 28-10-2009 17-12-2009

datum

tem

p (

oC

)

Case ATES and industrial water (Schiphol airport)

Who’s next?

• Urban network for cold• Industrial network for steam

• Heat recovery from sewer systems?• Sewer mining?