IT IS PROFITABLE

TO COOPERATE

WITH THE NATURE

www.malmberg.se

ISA Stockholm 2009-03-20

• Peter Bäckström

• Business Area Manager GeoEnergy

• Malmberg Water AB

ISA Stockholm 2009-03-20

Natural solutions taking care of man and the environment

Why Malmberg?

water treatment

drilling

waste management

biogas

geoenergy

140 years with focus on water

Biogas for green electric power

• heating-/cooling plants with

energy storage

• heat pump systems

• 30 years of experience

• Malmberg standard

Sustainable energy

geoenergy

Vällingby Centrum

• Client - Svenska Bostäder AB

• City modernization project 300 million EUR

• 185 000 m2 total area

•Sustainable, low carbon energy

• Replaces / completes district heating

• Cooling demand design criteria

Vällingby Centrum

Media central heating/cooling

Large scale rock storage

Media central heating/cooling

HEX

PEAKHEAT

PRINCIPLE

NATURAL HEATING/ COOLINGWITH ROCK STORAGE

COOLING DEMAND

< 80%free cooling

HEAT PUMP

HEATING DEMAND

<60%from the rock storage

1 part ofel. power

2 parts ofnatural energy

3 partsof heat

bore holes

HEX

ENERGY BALANCE(example)

AIR COOLER

Vällingby Centrum

Centre of Chemistry in Lund

Benchmarkedmedia central

153 bore holes, depth 230 m

• Turnkey contract

• 1.8 MW cooling / 1.75 MW heat

• Investment 4,5 million EUR incl. the rock

storage

• Installation period 18 months

• 153 bore holes, 230 m deep

• Free cooling 1.2 MW

Centre of Chemistry in Lund

ReferenceCentre of Chemistry in Lund

Media central heating/cooling

Vällingby Centrum

New car parking on top of the rock storage

Vällingby Centrum

Plenty of space ?

Vällingby Centrum

Crane for heavy components