The Effect of Supply Air Systems on Kitchen Thermal Environment
The Effect of Supply Air Systems on Kitchen Thermal Environment
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发表时间：
2005
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影响因子：
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通讯作者：
A. Livchak;D. Schrock;Zeqiang Sun
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文献类型：
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作者：
A. Livchak;D. Schrock;Zeqiang Sun
商用厨房是一个复杂的环境，其中通风系统的多个组件（包括通风柜排气、空调送风和补充空气系统）一起工作，但并不总是一致的。这就是为什么许多厨房都很热。炎热和不舒适的厨房会导致生产力下降，员工流失，最终导致餐厅经营者的利润损失。在厨房环境中使用热置换通风可以在不增加空调系统容量的情况下降低空间温度。采用计算流体力学（CFD）模拟方法，对传统混合通风系统和热置换通风系统在典型厨房环境中的应用进行了比较。通常厨房排气罩提供有未经调节的补充空气。经常听到这样的说法，即这种补充空气通过通风柜排出，而不会对厨房空间温度产生任何影响。本文结合测量数据和CFD模型结果，对两种补充空气配置的有效性进行了分析。厨房空间温度的增加是由于在夏季供应未经调节的补充空气而计算的。
A commercial kitchen is a complicated environment where multiple components of a ventilation system including hood exhaust, conditioned air supply, and makeup air systems work together but not always in unison. That is why many kitchens are hot. A hot and uncomfortable kitchen contributes to productivity loss, employee turnover, and eventually profit loss for the restaurant operator. Using thermal displacement ventilation in kitchen environment allows for a reduction in space temperature without increasing the air-conditioning system capacity. Application of two systems (traditional mixing ventilation system and thermal displacement ventilation system) is compared in a typical kitchen environment using computational fluid dynamics (CFD) modeling. Often kitchen exhaust hoods are provided with untempered makeup air. It is not uncommon to hear the claim that this makeup air is exhausted through the hood without having any effect on kitchen space temperature. The validity of this claim is analyzed in this paper for two makeup air configurations using a combination of measured data and results from CFD models. Kitchen space temperature increase is calculated as a result of supplying unconditioned makeup air during the summer.