従来の換気?空調方式と天井吹出し型置換換気?空調方式の比較:業務用厨房における置換換気?空調方式に関する研究（その2）

摘要

In previous paper, two types of displacement ventilation were investigated by computational fluid dynamics (hereafter CFD) simulations and experiments.rnThis paper presents thermal environment and ventilation performance of a full scale mock-up kitchen model with two types of ventilation systems, i.e. the displacement ventilation with ceiling supply outlet and the conventional HVAC system with VHS and punkah louver. In the experiments, these ventilation systems were compared in order to evaluate air temperature and contaminant concentration distributions in the kitchen. In the CFD simulations, the positions of supply opening of displacement ventilation were studied. Three types of commercial kitchens were simulated by CFD simulation, i.e. kitchens for European restaurant, Japanese one and Chinese one were modeled.rnIn addition, indexes of ventilation efficiency e.g. Direct Capture Efficiency (hereafter DCE) and Effective Ventilated Volume (hereafter EW) were calculated on the basis of the CFD results.%既報（その1)では、近年北欧などで適用されている置換換気?空調rn方式（Displacement Ventilation System ）に着目し、一般的な壁面吹rn出し口を設けた置換換気?空調方式と天井面に吹出し口を設けた置rn換換気?空調方式（ここでは、天井吹出し型置換換気?空調方式と呼rnぶ）との比較を行なった。天井吹出し型置換換気?空調方式により、rn吹出し口を壁面に設置した一般的な置換換気?空調方式と同等の室rn内環境を形成することが、既報の実験およびCFD解析により得られrnた。