Regarding the great importance of a good working environment, in this research, ventilation systems installed in kitchens of restaurants were studied in order to avoid problems and to understand the key factors that can influence on the performance of the system. The results obtained were taken into account to provide some recommendations to a real...
This study presents the experimental investigations on heat transfer and airflow in a closed refrigerated display cabinet. Air and product temperatures and air velocity were measured with thermocouples and a hot-wire anemometer, respectively. Temperature variation in the cabinet depends on the positions. The front areas contributed to higher temper...
The aim of this study is to analyze the effects of ventilation and cooling power distribution on air temperature and products temperature Ievels in a cold store by means of computational fluid dynamics. The refrigerated space under study has a set of six fans and six heat exchangers (HEs) with different mass flow rates and blowing velocities arrang...
In this work, large eddy simulations of a plane jet confining a cavity and subjected to an external lateral flow (ELF) were performed. Alongside and in a complementary manner an experimental study was carried out on a scale down model (1:5) representing a generic configuration of a display case, using LDV and PIV techniques to investigate the air f...
The objective of this study is to experimentally and numerically investigate the aerodynamic behaviour and the effectiveness of an air curtain confining cavity and subjected to external lateral stream. Experiments were carried out on a scale down model (1:5) representing a generic configuration of a display case, using LDV and PIV techniques to inv...
The objective of this study is to experimentally and numerically investigate the aerodynamic behaviour and the effectiveness of an air curtain confining cavity and subjected to external lateral flow. Experiments were carried out on a scale down model (1:5) under isothermal conditions representing a generic configuration of a display case, using LDV...
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Temperature and moisture heterogeneity, with non-uniform airflow in cold rooms was observed in several studies. This heterogeneity can lead to a deterioration of food quality and safety. Heat and mass transfer in cold rooms is a complex phenomenon because of the presence of the product (airflow modification, heat of respiration...) and the coupling...
The objective of this chapter is to present the state of the art of knowledge on heat transfer and airflow by natural convection in domestic refrigerators. Several subjects are dealt with: literature review of natural convection in closed cavity, cold production system of domestic refrigerators, temperatures and different heat transfer modes in app...
This study presents an analysis of air circulation and microclimate distribution during daytime in a 1-hectare Canary type tomato greenhouse in the coastal area of southern Morocco. The investigation of the climate inside the greenhouse is based on a numerical simulation using a finite volumes method to solve the mass, momentum and energy conservat...
