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Experimental investigation of a ground-coupled desiccant assisted air conditioning system

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  • Speerforck, Arne
  • Schmitz, Gerhard

Abstract

In a pilot installation at Hamburg University of Technology the coupled operation of an open cycle desiccant assisted air conditioning system with borehole heat exchangers is investigated. The paper presents experimental data recorded during the cooling period 2014. Results show that the electricity demand of the system can be reduced to the parasitic consumption of the fans, wheels and pumps. An electric energy efficiency ratio of 6.63 is achieved, enabling electricity savings of more than 70% compared to a conventional reference system and 54% compared to a desiccant assisted hybrid system relying on an electric chiller. Comfort conditions can be maintained during the whole cooling period. The borehole heat exchangers work highly efficient, exhibiting a seasonal performance factor of 192.

Suggested Citation

  • Speerforck, Arne & Schmitz, Gerhard, 2016. "Experimental investigation of a ground-coupled desiccant assisted air conditioning system," Applied Energy, Elsevier, vol. 181(C), pages 575-585.
  • Handle: RePEc:eee:appene:v:181:y:2016:i:c:p:575-585
    DOI: 10.1016/j.apenergy.2016.08.036
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    3. Speerforck, Arne & Ling, Jiazhen & Aute, Vikrant & Radermacher, Reinhard & Schmitz, Gerhard, 2017. "Modeling and simulation of a desiccant assisted solar and geothermal air conditioning system," Energy, Elsevier, vol. 141(C), pages 2321-2336.
    4. Finn Richter & Peter Niemann & Matthias Schuck & Jürgen Grabe & Gerhard Schmitz, 2021. "Comparison of Conventional and Variable Borehole Heat Exchangers for Use in a Desiccant Assisted Air Conditioning System," Energies, MDPI, vol. 14(4), pages 1-12, February.
    5. Jani, D.B. & Mishra, Manish & Sahoo, P.K., 2017. "Application of artificial neural network for predicting performance of solid desiccant cooling systems – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 352-366.
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    7. Shafiqur Rehman & Muhammad M. Rafique & Luai M. Alhems & Md. Mahbub Alam, 2020. "Development and Implementation of Solar Assisted Desiccant Cooling Technology in Developing Countries: A Case of Saudi Arabia," Energies, MDPI, vol. 13(3), pages 1-22, January.
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