Publisher DOI: 10.18462/iir.icr.2019.1228
Title: Covering peak loads with phase change materials in a geothermal and desiccant assisted air conditioning system
Language: English
Authors: Richter, Finn 
Niemann, Peter 
Schmitz, Gerhard 
Issue Date: Aug-2019
Source: International Congress of Refrigeration, Montreal, Canada 1228: 4053–4060 (2019-08)
Abstract (english): 
In a geothermal and desiccant assisted air conditioning system at Hamburg University of Technology covering thermal peak loads by means of phase change materials (PCM) is investigated. In the consequence of high ambient temperatures the cooling power of the soil can be exceeded and a backup system is necessary. In this study experimental data of a backup system consisting of PCM encapsulated in plates and placed in a rack is presented. A computer case fan is used to induce a volume flow through the PCM rack. Results show that the PCM rack is able to locally focus cooling operation and as a result improve thermal comfort perception. An air temperature reduction of approximately 0.7 – 0.9 °C at an average cooling power of 26.58 W can be achieved. The COP accounts for 6.65 with a corresponding electricity consumption of 4 W.
Conference: International Congress of Refrigeration, Montreal, Canada 2019 
Institute: Technische Thermodynamik M-21 
Document Type: Chapter/Article (Proceedings)
Project: EnOB: Dyn-GSGK: Nutzung dynamischer geothermischer Systeme zur sorptionsgestützten nachhaltigen Klimatisierung 
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