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IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask A Report A-D3b, Date: December 2010 solar cooling installation). - The average Primary Energy Ratio is higher than 1, but it’s still a bit low. It’s explained by the low electrical COP, and by the use of an electric boiler as a backup which is disadvantageous when the calculations are based on primary energy. Photos Solar collectors Technical premises Geothermal field Monitoring Data Measured period Monitoring level (according to Task 38 procedure) Person responsible for monitoring May 2009 – ongoing 3 Daniel Mugnier ; Romain Siré (TECSOL, France) Phone: +33468681640 Email: daniel.mugnier@tecsol.fr ; romain@tecsol.fr page 30
IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask A Report A-D3b, Date: December 2010 2.9 Germany: Technical College Butzbach Description of the application In the low-energy building of the Technical College, demand for summer air conditioning arises due to high occupation rates and frequent use of computer equipment. The building is used throughout the summer season. Two existing ventilation systems (supply/return air with heat recovery, 1,250 m³/h air volume flow rate each) are not sufficient to remove the sensible and latent cooling loads in summer. For this reason, a solar thermally driven chiller plant was added and supported in the frame of the German Solarthermie 2000plus funding programme. The ventilation units were extended by cooling coils, and additionally chilled ceilings and cooling panels were installed. Type of building College building, low energy building Location Butzbach, Germany In operation since 2008 System operated by Technical College Butzbach Air-conditioned area 335 m 2 System used for space heating? Yes System used for DHW preparation? No General description of the system Two absorption chillers are installed and thermally driven with solar heat alone. The condensing boiler is used for space heating in winter only. Different operation modes are possible with the system: only one chilled water temperature level, e.g. for the removal of sensible cooling loads, is required. In case both chillers are in operation, the driving circuits of the chillers are usually connected in parallel; one chiller operates at low chilled water temperature level for supply air dehumidification and cooling, while the other provides chilled water at a higher temperature level for the chilled ceilings. In this mode, it is possible to connect the driving circuits of the chillers in series with the effect of an increased temperature difference in this circuit, resulting in a more favourable collector system operation. The evacuated tube collector system contains pure water as collector fluid. A special freezing protection control runs the collector loop in short intervals at low ambient temperatures. No heat exchanger is installed in the total heat supply system. System concept and overall system control: Hindenburg Consulting (www.hindenburgconsulting.com) Detailed planning: IGT GmbH Central air-conditioning unit Technology Nominal capacity Type of closed system Brand of chiller unit Chilled water application closed cycle 2 x 10 kW cold Absorption SK Sonnenklima: Suninverse Supply air cooling and dehumidification, chilled ceilings page 31
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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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M M IEA SHC Task 38 Solar Air Condi
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IEA SHC Task 38 Monitoring Procedur
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Table of tables Table 1 List of ele
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Pompe évaporateur + compteur C3 Dr
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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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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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Marletta, L., Evola, G. and Sicurel
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Tekniker Centro Tecnológico Teknik
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IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

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