Numerical test bench to evaluate the influence of heat gains on the estimation of Heat Transfer Coefficient under occupied conditions - CEA - Commissariat à l’énergie atomique et aux énergies alternatives
Communication Dans Un Congrès Année : 2023

Numerical test bench to evaluate the influence of heat gains on the estimation of Heat Transfer Coefficient under occupied conditions

Résumé

The estimation of the HTC heat transfer coefficient in real occupancy conditions hasa great operational advantage contrary to the measurement in unoccupied conditions, whichrequires specific measurement protocols. Nevertheless, it presents additional constraintsbecause the gains due to weather conditions and occupancy are poorly controlled. Theobjective of this work is therefore to quantify the impact of these different gains. A numericaltest bench is set up to study the impact of the solar and internal gains by varying differentparameters, such as the typology of the building, the meteorological conditions, the scenariosof occupancy. These numerical tests allow to estimate the HTC of a building by calibrating anumerical model from a virtual dataset generated by a detailed model with known andcontrolled meteorological conditions and usage conditions. They make it possible to determinethe share of solar heat gain and internal heat gain in the energy balance of the building andtheir impact on the estimation of the HTC according to the studied configurations.
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Dates et versions

cea-04512694 , version 1 (20-03-2024)

Identifiants

Citer

Anais Pacquaut, Arnaud JAY, Arnaud Challansonnex, Sarah Juricic, Etienne Wurtz, et al.. Numerical test bench to evaluate the influence of heat gains on the estimation of Heat Transfer Coefficient under occupied conditions. 13th nordic symposium on building physics, Jun 2023, Aaalborg, Denmark. pp.012050, ⟨10.1088/1742-6596/2654/1/012050⟩. ⟨cea-04512694⟩
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