IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

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IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask A Report A-D3b, Date: December 2010 liter fresh water have been consumed this corresponds to 70 l fresh water per hour of full load operation. The open wet cooling tower did supply cooling water temperatures below 20°C a couple of days, e.g. the direct use of this cooling water for the chilled ceiling circuit is technically reasonable. - The solar thermal system - composed of 40.50 m² flat-plate collectors and 2000 liter stratifying hot water tank - generates sufficient driving temperatures for the absorption chiller. Typically the driving temperature starts with 75°C and decreases to 55°C. The low flow operation strategy for the flat-plate collectors in the rage below 20 l/h m² supplies sufficient driving temperatures. System reliability and overall success of the installation The monitoring system did operate reliably. Some measurement data logging gaps appeared because of reboot troubles of the data logging system in case of temporary grid blackouts. The measurement signals of the pyranometer did not deliver reasonable values and the technical problem could not be solved on site. During the monitoring period once the absorption chiller produced too low cold water temperatures which led to crystallization phenomena of the working fluid. The manufacturer did maintenance work which means mainly refilling of lithium-bromide and recreation of vacuum. Office room air temperatures were measured as well and during the monitoring period and only some few hot days were identified with office room air temperatures exceeding 26°C. Consequently the thermal user comfort lead to a high acceptance of the office users. Photos Office building of SOLution headquarters Sattledt/ Austria Technical room equipped with EAW WEGRACAL SE 15 absorption chiller, hot and cold water storage tank Chilled ceiling device Wet open cooling tower page 8
IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask A Report A-D3b, Date: December 2010 Monitoring Data (EWK 036/06 Axima) Measured period 09/2006 till 09/2008 Monitoring level (according to Task 38 2 procedure) Tim Selke (Austrian Institute of Technology, AIT) Person responsible for monitoring Phone: +43 (0)50550 6651 Email: Tim.Selke@ait.ac.at page 9
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Endbericht Solare Kühlung und Klim
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Task 38 Solar Air-Conditioning and
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IEA SHC Task 38 Solar Air Condition
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3.1 Adsorption Systems Table 1: Ads
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4 Heat Rejection There is a number
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Pompe évaporateur + compteur C3 Dr
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80 70 Temperature (°C) 60 50 40 3
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Power (kW) 20 19 18 17 16 15 14 13
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Power (kW) 20 19 18 17 16 15 14 13
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79 Spain Private House Olivares-Sev
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Questionnaire for Owners of Small-S
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Cuestionario para propietarios de i
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Questions to Package Solution Provi
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9. Maintenance o What type of maint
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Grundprinzip Solare Wärme thermisc
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Hintergrund Operating Agent: Hans-M
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- Leistungsvergleich von verfügbar
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Subtask A: Pre-engineered systems f
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Abb. 3: Das Bürogebäude in St. Sc
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Beispiele realisierter großer Syst
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a) b) c) Abb. 9: Installation eines
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Subtask C: Modelling and fundamenta
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Liste der Systeme im Monitoring von
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Liste der Systeme im Monitoring von
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Tekniker Centro Tecnológico Teknik
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