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Heat and mass transport model for a portable isolated unit-containment and protection system utilizing life support for human body.

机译：利用人体生命支持的便携式隔离式单元容纳和保护系统的传热和传质模型。

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摘要

A Portable Isolated Unit-Containment and Protection System Utilizing Life Support (PIU-CAPSULS) is a specially designed unit created in order to provide a controlled containment and comfort environment for a patient. It is used in cases involving chemical and biological contaminants or catastrophic events in civilian, commercial or military environments where the person may be infected or contaminated with an airborne agent such as nuclear, biological or chemical (NBC). This unit protects the patient from the external environment and helps to maintain comfortable conditions by preventing particulate (biological and radiological) cross-contamination between the human body (patient) and the surroundings. Providing individual casualty protection and maintaining comfortable conditions are complex concepts which take into account various aspects pertaining to sensorial, psychological and physiological concepts. Several factors such as temperature, air velocity and humidity along with human respiratory and thermal systems that regulate the consumption of oxygen and production of carbon dioxide and metabolic heat generation are to be considered. Apart from these, fluid flow, heat and mass transport also are an important part in the balance and distribution of heat and gas species within the unit.;In this study a three-dimensional CFD-based simulation model has been developed using ANSYS/Fluent commercial code to analyze the rate of heat and mass transport between the human body in an isolation unit and the environment. This model is based on convection and diffusion of heat and mass species such as oxygen and carbon dioxide, taking into account of the metabolic heat generation and species production. Simulations have been performed on different modes with two different flow rates and considering both pressure and suction modes of operation to identify favorable operating conditions.
机译：利用生命支持（PIU-CAPSULS）的便携式隔离式单元容纳和保护系统是一种经过特殊设计的单元，旨在为患者提供可控的容纳和舒适环境。它用于涉及民生，商业或军事环境中的化学和生物污染物或灾难性事件的情况下，这些人可能会被诸如核，生物或化学（NBC）的空气传播剂感染或污染。该单元通过防止人体（患者）与周围环境之间的微粒（生物学和放射学）交叉污染，保护患者免受外界环境的影响，并有助于维持舒适的条件。提供个人伤亡保护和维持舒适的条件是复杂的概念，其中考虑到与感官，心理和生理概念有关的各个方面。需要考虑几个因素，例如温度，空气速度和湿度，以及调节氧气消耗，二氧化碳产生和代谢热产生的人类呼吸系统和热系统。除此之外，流体流动，传热和传质也是单元内热量和气体种类平衡与分布的重要组成部分。在本研究中，使用ANSYS / Fluent开发了基于CFD的三维仿真模型商业代码，用于分析隔离单元中的人体与环境之间的热量和质量传输速率。该模型基于热量和物质（例如氧气和二氧化碳）的对流和扩散，并考虑了代谢热的产生和物质的产生。在具有两种不同流速的不同模式下进行了模拟，并考虑了压力和抽吸模式，以识别有利的工作条件。

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  • 作者

    Pinnaka, Nagakiran.;

  • 作者单位

    Northern Illinois University.;

  • 授予单位 Northern Illinois University.;
  • 学科 Engineering Mechanical.
  • 学位 M.S.
  • 年度 2011
  • 页码 131 p.
  • 总页数 131
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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