泄压阀是工程安全系统中的主要部件，旨在防止制冷设备因异常备用或运行偏移期间可能出现的超压情况而发生灾难性故障。ASHRAE标准15（ASHRAE 2007）规定了确定减压装置质量流量（容量）要求的方法，旨在保护制冷系统中使用的压力容器和容积式压缩机。为了提高系统安全性，设计师、承包商或业主通常会在其他类型的制冷设备上安装减压装置，包括:热交换器、管道和泵。不幸的是，在这些情况下，减压装置的尺寸和选择往往没有明确一致的依据； 因此，降低而不是提高系统安全性。本文回顾了容器泄压阀的尺寸确定方法，并介绍了适用于ASHRAE 15中未明确涵盖的其他类型制冷设备的泄压能力确定方法，包括油分离器、壳管式热交换器、板框式热交换器、油冷却热交换器和产品储罐。本文的主要目的之一是记录泄压装置容量确定的依据，以确保这些类型的受保护部件在可能导致高压的异常偏移期间保持安全。尽管本文介绍的方法旨在适用于各种制冷设备和操作条件，但不可能整齐地规定泄压装置的尺寸和选择标准，以涵盖所有情况。 因此，应始终期望使用合理的工程原理和工程判断。单位:双引文:ASHRAE交易，第115卷，第。2009年1月1日，芝加哥

Pressure relief valves are the primary component in an engineered safety system intended to prevent the catastrophic failure of refrigeration equipment due to overpressure conditions that can occur during abnormal standby or operating excursions. ASHRAE Standard 15 (ASHRAE 2007) prescribes methods for determining the mass flow rate (capacity) requirements for pressure relief devices aimed at protecting the pressure vessels and positive displacement compressors used in refrigeration systems. With the good intention of enhancing system safety, designers, contractors, or owners often install relief devices on other types of refrigeration equipment that may include: heat exchangers, piping and pumps. Unfortunately, the sizing and selection of pressure relief devices in these situations often occurs without the use of a clear and consistent basis; thereby, decreasing rather than increasing system safety.This paper reviews the pressure relief valve sizing methodology for vessels and presents approaches for relief capacity determination applicable for other types of refrigeration equipment not explicitly covered in ASHRAE 15 including oil separators, shell-and-tube heat exchangers, plate-and-frame heat exchangers, oil cooling heat exchangers, and product storage tanks. One of the principle aims of this paper is to document a basis for relief device capacity determination to ensure these types of protected components remain safe during abnormal excursions that can lead to high pressures. Although the methods presented in this paper are intended to apply across a wide range of refrigeration equipment and operating conditions, it is not possible to neatly prescribe relief device sizing and selection criteria to cover all situations. As such, the use of sound engineering principles and the application of engineering judgment should be always expected.Units: Dual