DISTRICT COOLING Pär Dalin President Devcco Chairman of the Working Group District Cooling at...
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DISTRICT COOLING Pär Dalin President Devcco Chairman of the Working Group District Cooling at Euroheat and Power 2015-04-21
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Transcript of DISTRICT COOLING Pär Dalin President Devcco Chairman of the Working Group District Cooling at...
DISTRICT COOLING
Pär DalinPresident Devcco
Chairman of the Working Group District Cooling at Euroheat and Power
2015-04-21
DISTRICT COOLING IMPACT ON HFC PHASE OUTBy introducing District Cooling in a city or a district with floor space of more that 500.000 sqm
Capacity reduction with centralized system -50% due to; redundancy and simultaneously factor
Production mix: Financially Optimized system
1. Free Cooling; non HFC base load2. Heat driven absorption; non HFC base load3. 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?
1. 50% less investment in capacity2. Additional investment in distribution grids
(magnitude; equal to production) 3. 5-10 times more efficient than stand alone
equipment
0
20
40
60
80
100
120District Cooling Impact
%
• ref. EHP-Ecoheatcool study, Sweden today >25%
ENERGY EFFICIENCY MULTIPLES FOR DISTRICT COOLING/SWAC SYSTEMS
Project Energy Efficienc
y 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 SWACNote;-In Sweden district cooling/SWAC has a market penetration of >25%
Paris
Vienna
36 Swedish
systems
Amsterdam
TorontoCornell
Gothenburg
Chicago
Helsinki
Development of project in GWhGWh
REFERENCE CASE – STOCKHOLM, SWEDEN
1994 1995 1996 1997 1998 1999 2000 2001 2002 2010
0
50
100
150
200
250
300
350
400
450
Overview of Stockholm district cooling Area
.
General InformationStockholm
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 (100.000 ton) with an output of total 450 GWh.
During the main years of investments 1997-2001 about 200 M€ where invested
The Stockholm DC system reduce 126,000 tons of CO2 emissions annually compared to conventional chillers
SWAC
&
Heat-pumpUnderground
storage
Heat pump
2 km pipline
