Lars Reinholdt
Technical University of Denmark
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Publication
Featured researches published by Lars Reinholdt.
Science and Technology for the Built Environment | 2015
Lorenzo Bellemo; Brian Elmegaard; Martin Ryhl Kærn; Wiebke Brix Markussen; Lars Reinholdt
Desiccant wheels are rotary desiccant dehumidifiers used in air-conditioning and drying applications. The modeling of simultaneous heat and mass transfer in these components is crucial for estimating their performances, as well as for simulating and optimizing their implementation in complete systems. A steady-state two-dimensional model is formulated and implemented, aiming to obtain good accuracy and short computational times with the purpose of inclusion in complete system models. The model includes mass and energy balances and correlations for heat and mass transfer based on empirical relations from the scientific literature. Convective heat and mass transfer coefficients are computed locally accounting for the entrance length effects. Mass diffusion inside the desiccant material is neglected. Comparison with experimental data from the literature shows that the model reproduces the physical behavior of desiccant wheels satisfactorily, as the deviation between the computed results and available data is always within 12%. The simulation time is as low as 3 s for a model with 200 control volumes. It is found that for the applied case, the model provides accurate results for the overall flow using an equiangular control volume discretization with 200 control volumes and no axial discretization. More computationally expensive configurations with axial discretization give more accurate results and information on local flow and desiccant conditions inside the wheel.
International Journal of Refrigeration-revue Internationale Du Froid | 2015
Jonas Kjær Jensen; Torben Schmidt Ommen; Wiebke Brix Markussen; Lars Reinholdt; Brian Elmegaard
International Journal of Refrigeration-revue Internationale Du Froid | 2015
Torben Schmidt Ommen; Jonas Kjær Jensen; Wiebke Brix Markussen; Lars Reinholdt; Brian Elmegaard
International Journal of Refrigeration-revue Internationale Du Froid | 2015
Jonas Kjær Jensen; Wiebke Brix Markussen; Lars Reinholdt; Brian Elmegaard
international journal of energy and environmental engineering | 2015
Jonas Kjær Jensen; Wiebke Brix Markussen; Lars Reinholdt; Brian Elmegaard
4th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants | 2013
Lorenzo Bellemo; Brian Elmegaard; Lars Reinholdt; Martin Ryhl Kærn
23rd IIR International Congress of Refrigeration | 2011
Torben Schmidt Ommen; Christen Malte Markussen; Lars Reinholdt; Brian Elmegaard
International Sorption Heat Pump Conference (ISHPC 2014) | 2014
Jonas Kjær Jensen; Lars Reinholdt; Wiebke Brix Markussen; Brian Elmegaard
26th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems | 2013
Lorenzo Bellemo; Brian Elmegaard; Lars Reinholdt; Martin Ryhl Kærn; Arne Jakobsen; Wiebke Brix Markussen
12th IIR Gustav Lorentzen Natural Working Fluids Conference (GL 2016) | 2016
Lars Reinholdt; B. Horntvedt; S. R. Nordtvedt; Brian Elmegaard; Jonas Kjær Jensen; Thor L. Lemminger