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District sized heatpumps13.4MW and 90°C from a chilly fjord?
How we did it in Drammen....
What it means for your city
Dave Pearson
Star Renewable Energy
Emerson At-A-Glance 2014
US $24 Billion in Sales
Diversified global
manufacturer
and technology provider
Approximately 133,000
employees worldwide
Headquarters in
St. Louis, Missouri USA
NYSE: EMR
• Manufacturing and/or sales presence in more than 150 countries
• 235 manufacturing locations around the world
Emerson Is a Leader in Its Core Global Businesses
& Markets
#1 Compressors
#1 Controls
#1 Alternators
#1 Fluid Control
#1 Ultrasonic Welding
#1 Food Waste Disposer
#1 Plumbing Tools
#1 Wet/Dry Vacuums
#1 Mobile Point-of-Care Carts
#1 Control Valves
#1 Measurement Devices
#1 Wireless Devices
#1 AC & DC Power Systems
#1 OEM Embedded Power
#1 Precision Cooling Systems
#1 Access & Control (KVM)
#1 Power Switching & Controls
Star Overview
Overview
Energy Use..........
Transport
Electricity
Heating
Transport – 25%
Electricity – 25% (maybe higher due to cooling)
Heating – 50%
Overview
Energy Use..........
WHY TRY TO DO IT DIFFERENTLY?
GLOBAL WARMING
SAVE MONEY
CREATE JOBS
AIR QUALITY
THIS SEGMENTS FOCUSES ON BIG HEATING and cooling
Introduction to Drammen
Heatpump - schematic
District heating - Ammonia schematic
Desuperheater
Seawater
Circuit
73.7oC
Hig
h p
ressu
re d
isch
arg
e
Suction
Condenser
Subcooler
Subcooler
Eco
no
mis
er
60oC
70.8oC
79.4oC
87.2oC
89.5oC
Eco
no
mis
er
Intercooler
Intercooler
Intercooler
Evaporator
8oC
4oC
92oC
60oC
Low stage discharge
Subcooled liquid
Lo
w s
tag
e c
om
pre
sso
r
Hig
h s
tag
e c
om
pre
sso
r
District heating - Water heating schematic
70.6oC
Desuperheater
Seawater
Circuit
73.7oC
Condenser
Subcooler
Subcooler60oC
70.8oC
79.4oC
87.2oC
89.5oC
Intercooler
Intercooler
Intercooler
Evaporator
8oC
4oC
92oC
60oC
Desuperheater
64.9oC
Condenser
Subcooler
Subcooler60oC
60.4oC
87.2oC
89.5oC
Intercooler
Intercooler
Intercooler
Evaporator
8oC
4oC
92oC
60oC
Desuperheater
81.5oC
Condenser
Subcooler
Subcooler60oC
79.6oC
87.2oC
87.2oC
89.5oC
Intercooler
Intercooler
Intercooler
Evaporator
8oC
4oC
92oC
60oC
60oC90
oC
95oC FROM OIL COOLERS
4oC
8oC
System configuration
The Drammenselva and the ultimate heat pump
“The most efficient district heating system in Norway!”
44km SW
of Oslo,
Norway
System Installation
System Performance
Results in Drammen
We achieved a 13.2MW heat pump system which:
Runs almost non-stop from October to April
Delivers water at 90°C; 200,000,000kWh so far
Uses river water as the heat source
Has an efficiency ratio of 3
(we get three times more heat out than the electricity input)
Is much cheaper to run than the other heat sources:
one third the cost of biomass
one seventh the cost of LNG
one eighth the cost of LPG
Delivered 85% of the heat produce @ Drammen Jacob
Borchs Gate last year (67GWh of heat supplied to the
town each year)
Why had it never been done before?
Conclusions
Even in winter we deliver heat for the city
They involve technical challenges, but that’s what we do…
MOST CITIES ON A RIVER. LOTS OF HEAT. 2GW?
What about Belgrade?
What about Belgrade?
2 Rivers!
What about Beograd?
Total rated
installed capacity 2.832Length of DH
network 700 km (1.400 km with return pipelines)
Market structure
(demand)
•79 percent of residential customers
•21 percent of commercial customers
Average annual
consumption and
percentage of
certain fuels
•app. 350 million cubic meters of natural gas (85 percent)
•app. 46.000 tons of heavy fuel oil (13,5 percent)
•app. 3.200 tons of coal (0,4 percent)
•app. 2.000 tons of pellets (biomass – 0,25 percent)
•app. 1.500 tones of briquettes (biomass – 0,2 percent)
•app. 500.000 liters of heating oil (0.1 percent).
Average annual
production of
heat energy app. 3.500.704 MWh
The finances?
Basic cost data:
At present heat costs:
€45/MWh
Electricity costs:
€65/MWh but we get 3.5 units of heat for this at 75C, so
Heatpumps sourced from the river make heat for €18.7MWh
All we need is a massive infrastructure investment....but it is worth it.
We can also make cooling as a by-product (data centres)
The finances?
Don’t just see a river........ see a heat source
Dave Pearson
Director of
Star Renewable Energy
Zoran Stajic
Emerson Climate Technologies
