Ganslandt dcd 2 nov 2016

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Open District Heating and District Cooling: Enabling and Incentivizing Large Scale Heat Recovery in Stockholm

Mattias Ganslandt, Chief Business Developer, Fortum Värme

London, November 2, 2016


Renewable Electricity as a Foundation for Efficient and Sustainable Computing

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* Calculated with proposed new tax for 0,5 MW+ data centers from January 1, 2017

Data Center Electricity Cost in Stockholm 2017-2026*

Electricity andelectricity distribution

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Longrun Additional Supply of Wind Power in Sweden

www.dcdconverged.com3

Heat

Pumps CHP

District

Heating Data

Center Cooling

Machine

Cond.

Power

Data

Center

Heat

Rejection

Heat

Rejection

Heat

Recovery

Heat

Recovery

Fossil

fuels

Renewable

fuels

The Way Forward The Old Ways

Open District Heating enables data centers to recover heat and turn waste

heat into revenue. Complements include renewable electricity, connectivity and reliable power distribution.


A quick look at cost

Stockholm EUR/kW, mo GBP/kW, mo c€/kWh p/kWh Electricity* incl. distribution 31,6 28,5 4,3 3,9 Open district heating revenue -14,5 -13,1 -2,0 -1,8 Co-lo service excl power 161,0 145,3 22,1 19,9 Cost to compute** 183,2 165,3 25,1 22,7 * Calculated with proposed data center tax on electricity from January 1, 2017 ** Calculated with PUE=1,3 and 1 MW IT load

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Urban Heat Recovery and Sustainable Energy – Illustration 1

Example: KVV8

• New Biofueled CHP plant operational in 2016

• Biofuel 400 MW (forest residue, wood chips)

• Thermal boiler capacity 330 MW

– Electric power generation 130 MW

– District heating output 200 MW

• Flue gas condensation 80 MW

• Energy efficiency 102%

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Urban Heat Recovery with District Cooling – Illustration 2

• Kista Heat Recovery plant is built to serve all the district cooling customers in Kista – both process cooling customers (such as data centers) and other cooling customers (such as offices, shops, hotels and restaurants). In the Summer, we meet peak load demand using cooling machines with evaporative cooling towers. In the Winter, we recover heat from the district cooling network with heat pumps.

• Quick facts:

1. Kista Heat Recovery Plant was built in 2000

2. There are 6 cooling machines in the plant. The peak load cooling capacity in the summer is approximately 48 MW. The largest, machine no 6, has a cooling capacity of 13 MW.

3. Three of the machines (HP1, HP2, HP3) can operate as heat pumps and produce district heating with a combined heat recovery capacity of 18 MW and a district heating capacity of 27 MW

4. COP (the Coefficient of Performance) is approximately 3 when district heating is produced

5. Machine no 3 has two compressors that can work in parallel during the Summer (cooling capacity 10,8 MW) and in series in the Winter (6 MW cooling), which allows for a leaving condensor temperature up to 78 °C

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Urban Heat Recovery with Open District Heating ®

– Illustration 3

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• Cool the data center with a heat

pump

• Sell excess heat to the district

heating network

• (Option) Sell surplus cooling capacity

to the district cooling network

• Long term and transparent

contracts,10 + 5 years

• The data center invests in the heat

pump

• Fortum Värme invests in the

connection to the distribution system


Pilots since 2014 – Learning by Doing

The technical setup – an example

Note that there are some specific hydro-technical solutions not visible on this page required for stable operations, so this is not the “blue print”


Optimizing the Data Center for Sustainability and Efficiency

18 m

2 m

2 m

n

0.6n m

2

1

Cooling Plant with 10 heat pumps

6 m

Cooling Unit 1 Cooling Unit 1 Cooling Unit N

6,6 meters x N

1. A Higher Evaporator Leaving Water Temp Yields

Larger Cooling Capacity of the Cooling Plant 2. A Higher Evaporator Leaving Water Temp Yields

Smaller Cooling Capacity of the Cooling Coils

3. A Higher Evaporator Leaving Water Temp Yields

Shorter Rows in the Data Room 4. A Higher Evaporator Leaving Water Temp Yields

Higher Air Inlet Temp to the Servers


Cost Minimizing Temperature (17°C)

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Evaporator leaving water temperature (°C)

Investment Cost per kW of Cooling Capacity

Total investment

Building & land

CoolingproductionCoolingdistributionMinimum

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Cooling distribution

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Making District Heating More Heat Recovery Friendly

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Smooth the

heating

load

Reduce the

district heating

temperature

Improve the

cooling of district

heating water

Increase the

seasonal thermal

storage capacity

Find new markets

for low temperature

heating


Conclusions

Advice to C-level:

1. Let access to abundant and reliable supply of renewable electricity influence your global strategy

2. Make potential for large scale heat recovery a site selection criteria

3. Optimize the design for efficient and sustainable operations

4. Look for synergies and trade opportunities with your neighbours

5. Prepare for the competition from the north

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Don’t Waste Your Energy!

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Mattias Ganslandt, Ph D

Chief Business Developer

Mobile: +46 705 194 524

E-mail: [email protected]

LinkedIn: www.linkedin.com/in/mattiasganslandt

Ganslandt dcd 2 nov 2016

Business

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