Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental validation of a ground heat exchanger model in a hybrid ground source heat pump
This article provides an overview of short time-scale validation of the duct storage model (Hellström 1989) for the simulation of ground source heat pump performance using experimental data acquired from two operational systems. The error in the temperature change across the ground heat exchanger in the first system was within measurement error, but it was larger than the measurement error in the second sytem due to uncertainty in the thermal properties of the ground. A sensitivity study determined that the thermal conductivity and heat capacity have the greatest impact on the model accuracy. An assessment of the error in the model using ASHRAE handbook (ASHRAE 2007) values for thermal conductivity and heat capacity provided a measure of acceptable error. The difficulties of using real-world operational systems for model validation are discussed.
Experimental validation of a ground heat exchanger model in a hybrid ground source heat pump
This article provides an overview of short time-scale validation of the duct storage model (Hellström 1989) for the simulation of ground source heat pump performance using experimental data acquired from two operational systems. The error in the temperature change across the ground heat exchanger in the first system was within measurement error, but it was larger than the measurement error in the second sytem due to uncertainty in the thermal properties of the ground. A sensitivity study determined that the thermal conductivity and heat capacity have the greatest impact on the model accuracy. An assessment of the error in the model using ASHRAE handbook (ASHRAE 2007) values for thermal conductivity and heat capacity provided a measure of acceptable error. The difficulties of using real-world operational systems for model validation are discussed.
Experimental validation of a ground heat exchanger model in a hybrid ground source heat pump
Pertzborn, Amanda (Autor:in) / Hackel, Scott (Autor:in) / Nellis, Greg (Autor:in) / Klein, Sanford (Autor:in)
HVAC&R Research ; 17 ; 1101-1114
01.12.2011
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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