1. Chairman of the Working Group District Cooling at Euroheat and Power
Pär Dalin
President Devcco
Chairman of the Working Group District Cooling at Euroheat and Power

2. District Cooling Impact on HFC phase out
By introducing District Cooling in a city or a district with floor space of more that sqm
Capacity reduction with centralized system -50% due to; redundancy and simultaneously factor
Production mix: Financially Optimized system
Free Cooling; non HFC base load
Heat driven absorption; non HFC base load
Large size chillers; 20-30% for peak capacity
Alternative refrigerant with no or low GWP (ammonia, HFO-1234ze)
24/7 operation control secure <2% annual leakage
Financially Feasible for >25% of AC market in EU* , equal or higher for the global market, WHY?
50% less investment in capacity
Additional investment in distribution grids (magnitude; equal to production)
5-10 times more efficient than stand alone equipment
ref. EHP-Ecoheatcool study, Sweden today >25%

5. Energy Efficiency Multiples for District Cooling/SWAC systems
Project
Energy
Efficiency multiple
Type
Reference 1
Conventional Chillers
Lusail, Qatar 2
Centralised chillers / condenser cooling 3 4 5
Stockholm, Sweden 6
SWAC/Hybrid 7 8
Honolulu, US
9-10
SWAC
Aruba 10
Paris
Chicago
Vienna
Helsinki
Amsterdam
36 Swedish
systems
Gothenburg
Cornell
Toronto
Note;-In Sweden district cooling/SWAC has a market penetration of >25%

6. Reference Case – Stockholm, Sweden
General Information
Stockholm is the capital of Sweden with 1,2 million inhabitants.
The first cooling delivery was made in 1995 after initializing the project in 1994.
In 2010 the network provided cooling solutions to more than 100 customers and approx 600 buildings with a total demand of 350 MW ( ton) with an output of total 450 GWh.
During the main years of investments about 200 M€ where invested
Development of project in GWh
SWAC
&
Heat-pump
GWh
Underground
storage
2 km pipline
Heat pump
Overview of Stockholm district cooling Area .
The Stockholm DC system reduce 126,000 tons of CO2 emissions annually compared to conventional chillers