Experimental verification of the CO2 and temperature model

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Ventilation Pub Date : 2020-04-02 DOI:10.1080/14733315.2019.1592333

D. Krawczyk, M. Zukowski

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引用次数: 4

Abstract

Abstract One of important parameters of a room microclimate is carbon dioxide level that could be predicted using models presented in literature. In buildings with high heat gains from people, like classrooms, conference rooms or gyms, during estimation of the CO2 concentration it is strongly recommended to take into account changes of indoor air temperature. The article presents a mathematical model of the phenomena of heat transport in a room that includes heat transfer between the analysed room and surroundings, air exchange within the confines of natural ventilation and infiltration, heat gains from people and solar gains. The numerical solution draws upon an analogy between the mathematical description of the non-stationary fields of temperature and electrical potentials. A simulation of the indoor temperature changes was applied to the carbon dioxide concentration model formulated by Krawczyk, Rodero, Gładyszewska-Fiedoruk and Gajewski and a T-CO2 model was developed. Presented methodology and delivered application allows to estimate CO2 level changes in rooms in significantly more precise way than setting temperature at constant level.

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CO2和温度模型的实验验证

摘要:室内小气候的一个重要参数是二氧化碳水平，可以用文献中提出的模型来预测。在教室、会议室或健身房等人类热增益较高的建筑物中，在估计二氧化碳浓度时，强烈建议考虑室内空气温度的变化。本文提出了一个房间内热传递现象的数学模型，包括被分析房间与周围环境之间的热传递、自然通风和渗透范围内的空气交换、人的热量增益和太阳热量增益。数值解利用了非稳态温度场和电势场的数学描述之间的类比。将室内温度变化的模拟应用于Krawczyk、Rodero、Gładyszewska-Fiedoruk和Gajewski建立的二氧化碳浓度模型，建立了T-CO2模型。所提出的方法和交付的应用允许以比将温度设置在恒定水平更精确的方式估计房间内二氧化碳水平的变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Ventilation CONSTRUCTION & BUILDING TECHNOLOGY-ENERGY & FUELS

CiteScore

3.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： This is a peer reviewed journal aimed at providing the latest information on research and application. Topics include: • New ideas concerned with the development or application of ventilation; • Validated case studies demonstrating the performance of ventilation strategies; • Information on needs and solutions for specific building types including: offices, dwellings, schools, hospitals, parking garages, urban buildings and recreational buildings etc; • Developments in numerical methods; • Measurement techniques; • Related issues in which the impact of ventilation plays an important role (e.g. the interaction of ventilation with air quality, health and comfort); • Energy issues related to ventilation (e.g. low energy systems, ventilation heating and cooling loss); • Driving forces (weather data, fan performance etc).