制冷与空调

随着科技的不断发展和环保意识的持续增强，实验室在使用制冷剂过程中所面临的安全与环境风险日益受到关注。制冷剂作为实验室常用的工质，具有易泄漏、易挥发等特性，一旦泄漏，可能导致中毒、窒息，甚至在特定条件下引发爆炸，严重威胁实验室人员的生命安全和科研工作的顺利进行。为全面评估制冷剂泄漏带来的潜在危害，将实验室常用制冷剂作为研究对象，测算了不同制冷剂在典型实验室环境下的窒息临界面积与爆炸临界面积，并结合制冷剂急性毒性接触极限得到了单位空间内制冷剂使用的安全限值。研究通过结合实验室实际操作流程和管理现状，提出的一系列针对制冷剂泄漏事故的防范措施与整改建议，可为实验室制冷剂安全管理与应急响应提供科学依据，并对提升实验室整体安全水平、保障科研人员生命安全具有重要的现实意义。

With the continuous advancement of technology and the growing awareness of environmental protection, the safety and environmental risks associated with the use of refrigerants in laboratories have attracted increasing attention. As commonly used working fluids in laboratories, refrigerants possess characteristics such as high volatility and susceptibility to leakage. Once leaked, they may cause poisoning, asphyxiation, and, under certain conditions, even explosions, posing serious threats to the safety of laboratory personnel and the smooth progress of scientific research. To comprehensively assess the potential hazards caused by refrigerant leakage, this study takes commonly used laboratory refrigerants as research objects. After calculating the critical asphyxiation area and critical explosion area of different refrigerants under typical laboratory conditions, the safe limits for refrigerant usage per unit space were derived by integrating the acute toxicity exposure limits of refrigerants. In combination with actual laboratory operational procedures and current management practices, this paper proposes a series of preventive and corrective measures for refrigerant leakage incidents. The results can provide a scientific basis for laboratory refrigerant safety management and emergency response and are of great practical significance in improving overall laboratory safety and protecting the lives of research personnel.