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IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask C1 Report, 31 October 2010 KONDENSATOR CONDENSER Kühlwasser cooling water ADSORBER cooling Kühlwasser water Wärmeübertrager heat exchanger with mit silica Silicagel DESORBER Antriebswärme driving heat Wärmeübertrager heat exchanger with mit silica Silicagel automatische, automatic internal innere valves Ventile condensate Kältemittelrücklauf return Kaltwasser chilled water EVAPORATOR VERDAMPFER Figure 11: Scheme of a typical adsorption chiller with two adsorption chambers, one evaporator and one condenser. The two adsorber adsorption chiller is operated in four phases: 1. Phase 1: the left reactor is regenerated, the right reactor is in the adsorption phase. 2. Phase 2: heat from the left, hot adsorber is used to pre-heat the cold adsorber on the right hand side 3. Phase 3: is similar to phase 1 with exchanged adsorbers 4. Phase 4: similar to phase 2 with exchanged adsorbers. Kondensator condenser Phase 1 desorption Desorption Adsorption adsorption Phase 4 Phase 2 Kondensator condenser Verdampfer evaporator Kondensator condenser Verdampfer evaporator Wärmerückgewinnung heat recovery Kondensator condenser Phase 3 Verdampfer evaporator Wärmerückgewinnung heat recovery adsorption Adsorption Desorption desorption Verdampfer evaporator Figure 12: The four phases of an adsorption chiller with two reactors. 3.2 Main characteristics The time for the heat recovery is critical: on the one hand a very good heat recovery is necessary to achieve reasonable COPs, on the other hand during the heat recovery process normally no cold is produced, thus reducing the cooling power. page 29
IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask C1 Report, 31 October 2010 Due to the intermittent, quasi continuous operation of such an adsorption chiller, the temperatures and thus the power in the three hydraulic circuits are fluctuating. Figure 13 shows a typical temperature curve of an adsorption chiller. Depending on the construction type, the hydraulic circuits may be interrupted during the heat recovery phases. hot water, in temperature [°C] hot water, out cooling water, in cooling water, out chilled water, in chilled water, out time [mm:ss] Figure 13: Typical temperature evolution in the forward and return lines of an adsorption chiller during operation. Figure 14: Cooling capacity and COP of an adsorption chiller (Mycom ADR) as a function of hot water temperature for a chilled water temperature of 14°C / 9°C and different heat rejection temperatures. page 30
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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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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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Country Name/ Company City Applicat
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79 Spain Private House Olivares-Sev
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Questionnaire for Owners of Small-S
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Grundprinzip Solare Wärme thermisc
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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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Ellehauge & Kildemoes Vestergade 48
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Tekniker Centro Tecnológico Teknik
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IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

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