Paper Conference

Proceedings of eSim 2022: 12th Conference of IBPSA-Canada


Hygrothermal component models for greenhouse simulation in TRNSYS

Clémence Lavigueur, Michaël Kummert
École Polytechnique Montréal, Canada

Abstract: Greenhouse production is a viable solution to enhance food self-reliance, but the associated energy use for heating, dehumidification and artificial lighting is significant in Canadian climates. Building performance simulation tools can be used to simulate greenhouses and optimize their design and operation, but building models typically simplify or neglect key processes in the hygrothermal balance of a thermal zone in the presence of plants: convection, radiation, and evapotranspiration from plants is more complex than moisture gains from occupants or equipment, and condensation plays a significant role in moisture removal. This paper proposes two models that represent these processes more accurately and that can be combined with the existing dynamic building model implemented in TRNSYS. Both models are compared to experimental data from original measurements or from the literature.
Keywords: Greenhouse, Numerical model, Hygrothermal analysis, Energy balance