IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at
IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at
IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask B Report, 2009-11-12 210.0 195.0 180.0 165.0 150.0 135.0 120.0 l tank/ m² STC 105.0 90.0 75.0 60.0 45.0 30.0 15.0 0.0 FP ETC CPC Figure 4.7 Rate between the litres of hot water storage tanks used in each of 46 installations and classified according to the technology used for solar thermal collectors Cold water storage tanks are not spread as the hot water ones: within 33 installations, 19 have a cold water tank whereas the rest do not (especially DEC systems). Also in this case the rate between the volume of the tank and the kW of cooling installed varies case by case as shown in Figure 4.8. Page 14
IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask B Report, 2009-11-12 165.0 150.0 135.0 120.0 105.0 l / kW (TDC) 90.0 75.0 60.0 45.0 30.0 15.0 0.0 Abs Ads Figure 4.8 Rate between the volume of cold water tanks and the corresponding installed cooling capacity Heat and cold back up systems Within 45 systems, 40 are equipped with heat back up systems, based on gas/oil boilers, or heat recovery from cogeneration unit, district heating and heat pumps as shown in Figure 4.9. Within 36 installations, 25 do not have any cold backup. Within the left systems, 58% employs vapor compression chillers whereas 32% employs heat pumps (NB, systems for which data are available can be different from the ones where data on heat backup systems are available). As example of solar cooling systems with no heat neither cold backup system is the plant installed in La Reunion (F), where 30 kW absorption chiller is exclusively driven by the heat deriving from 90 m² flat plate solar collectors and thanks to the management of two storage tanks, one for solar heat of 1,500 l tank and one for cold water (1,000 l). Page 15
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- Page 364 and 365: Fragebogen an Besitzer solare Kühl
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<strong>IEA</strong> SHC Task 38 <strong>Solar</strong> Air Conditioning <strong>and</strong> Refriger<strong>at</strong>ion Subtask B Report, 2009-11-12<br />
165.0<br />
150.0<br />
135.0<br />
120.0<br />
105.0<br />
l / kW (TDC)<br />
90.0<br />
75.0<br />
60.0<br />
45.0<br />
30.0<br />
15.0<br />
0.0<br />
Abs<br />
Ads<br />
Figure 4.8 R<strong>at</strong>e between the volume of cold w<strong>at</strong>er tanks <strong>and</strong> the corresponding installed cooling<br />
capacity<br />
He<strong>at</strong> <strong>and</strong> cold back up systems<br />
Within 45 systems, 40 are equipped with he<strong>at</strong> back up systems, based on gas/oil<br />
boilers, or he<strong>at</strong> recovery from cogener<strong>at</strong>ion unit, district he<strong>at</strong>ing <strong>and</strong> he<strong>at</strong> pumps as<br />
shown in Figure 4.9.<br />
Within 36 install<strong>at</strong>ions, 25 do not have any cold backup. Within the left systems, 58%<br />
employs vapor compression chillers whereas 32% employs he<strong>at</strong> pumps (NB,<br />
systems for which d<strong>at</strong>a are available can be different from the ones where d<strong>at</strong>a on<br />
he<strong>at</strong> backup systems are available).<br />
As example of solar cooling systems with no he<strong>at</strong> neither cold backup system is the<br />
plant installed in La Reunion (F), where 30 kW absorption chiller is exclusively driven<br />
by the he<strong>at</strong> deriving from 90 m² fl<strong>at</strong> pl<strong>at</strong>e solar collectors <strong>and</strong> thanks to the<br />
management of two storage tanks, one for solar he<strong>at</strong> of 1,500 l tank <strong>and</strong> one for cold<br />
w<strong>at</strong>er (1,000 l).<br />
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