Published August 11, 2024
| Version v1
Conference paper
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A comparison of simplified modeling approaches and simulation quality of an industrial R717-HTHP
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1.
Graz University of Technology
Description
This study describes the development of simplified simulation models of an ammonia (R717) chiller (nominal cooling capacity: 900 kW, source outlet temperature of 1 °C) and an add-on HTHP (nominal heating capacity: 550 kW, sink outlet temperatures up to 90 °C). For this purpose, different model approaches, such as second law efficiencies and component-based modeling using UA-values, are explored and evaluated through a comparative analysis of simulation quality. Validation is conducted using measurement data at varying operating conditions, which shows mean errors in sink & source capacities and COPs below 5.2 %.
Copyright © 2024, IIF/IIR Published with the authorization of the International Institute of Refrigeration (IIR)
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IIR_GL2024_R717_Wernhart_et_al.pdf
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