...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mining Engineering >Cryogenic air supply for cooling built-in-place refuge alternatives in hot mines
【24h】

Cryogenic air supply for cooling built-in-place refuge alternatives in hot mines

机译：低温空气供应，用于冷却热矿井内置避难所

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Built-in-place (BIP) refuge alternatives (RAs) are designed to provide a secure space for miners who cannot escape during a mine emergency. Heat and humidity buildup within RAs may expose miners to physiological hazards such as heat stress. To minimize the risk of heat stress, Title 30 Code of Federal Regulations (CFR), or 30 CFR, mandates a maximum allowable apparent temperature (AT) for an occupied RA of 35 °C (95 °F). The National Institute for Occupational Safety and Health (NIOSH) has conducted extensive research on the thermal environment of occupied RAs intended for use in underground coal mines. NIOSH research has demonstrated that a fully occupied BIP RA can exceed the AT limit by more than 5.6 °C (10 °F) in mines with elevated mine strata and air temperatures. In this circumstance, an RA cooling system could provide a solution. This paper provides an overview of test methodology and findings as well as guidance on improving the performance of a cryogenic air system prototype by optimizing the flow rate, increasing the tank storage capacity, and improving the efficiency of the heat exchanger of the cryogenic system. This may enable BIP RAs to meet the 35 °C (95 °F) AT limit in mines with elevated temperatures. The information in this paper is useful for RA manufacturers and mines that may choose to implement a cryogenic air system as a heat mitigation strategy.
机译：内置（BIP）避难所替代品（RAS）旨在为在矿井紧急情况下无法逃脱的矿工提供安全的空间。 RAS内的热量和湿度累积可能会使矿工暴露于生理危险，如热应激。为了最大限度地减少热应激的风险，联邦法规（CFR）或30 CFR的标题30码，要求占用的RA为35℃（95°F）的最大允许表观温度（AT）。国家职业安全与健康研究所（Niosh）对占领RAS的热环境进行了广泛的研究，用于地下煤矿。 Niosh Research已经证明，完全占用的BIP Ra可以超过5.6°C（10°F）的矿井中矿山地层和空气温度的矿井的限制。在这种情况下，RA冷却系统可以提供解决方案。本文概述了测试方法和调查结果以及通过优化流速，增加罐存储容量，提高低温系统的热交换器的效率来提高低温空气系统原型的性能的指导。这可以使BIP RA能够以高温升高的矿井以限制满足35°C（95°F）。本文中的信息对于可选择实施低温空气系统作为热缓解策略的ra制造商和地雷是有用的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号