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首页> 外文会议>Twenty-Eighth Industrial Energy Technology Conference (IETC 2006) >Optimization of Industrial Refrigeration Plants:Including a Case Study at Stonyfield Farm Yogurt
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Optimization of Industrial Refrigeration Plants:Including a Case Study at Stonyfield Farm Yogurt

机译：工业制冷设备的优化：包括Stonyfield Farm酸奶的案例研究

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Industrial refrigeration can be found in many types of applications ranging from ice making to food processingrnto product preservation. Industrial refrigeration typically represents one of the largest loads in a facility wheneverrnrequired for manufacturing processes. A refrigeration system is made up of different components includingrncompressors, evaporators, condensers and controls. Each component may be from a different manufacturer in customrnengineered systems, or equipment may come as an integral packaged unit. Custom systems are generally an assembly ofrncomponents that have been tested and rated individually under design operating conditions but not necessarily rated asrnan integral, coordinated system. Therefore, in the assembled refrigeration plant, there is a possibility that the individualrncomponents may not provide optimum operation based on the deviation between the actual operating conditions and therntest conditions as well as the interactions between the different components in the system. Consequently, the finalrnrefrigeration plant may not operate optimally, resulting in lower operating efficiency and higher operating costs.rnThe factors that influence the refrigeration system energy use are the inherent efficiency of the design andrnrefrigerant, the condition of the equipment, the control strategy, and the load profile of the system (deviation of thernoperating cooling loads from the design cooling loads). In many cases, the installed refrigeration plants can benefitrnfrom an optimization process that incorporates monitoring of key operating parameters resulting in subsequent controlrnadjustments and or system operational changes based on the assessed data.rnThis paper will: provide an overview of typical industrial ammonia refrigeration systems; discuss the variousrncomponents of the system including the compressors, condensers, evaporators and controls that make up a refrigerationrnsystem; and present typical energy saving strategies pertaining to the operation of multi-stage compressor systems, thernuse of evaporative condensers and floating head pressure controls, and sequencing optimization strategies.rnFurthermore, simple low cost approaches to reduce refrigeration loads will be discussed.rnA case study will be presented that illustrates the concepts associated with the refrigeration system energyrnsavings opportunities discussed in the paper. Stonyfield Farm Yogurt, a well-known, environmentally and sociallyrnprogressive manufacturer of a wide variety of all natural and organic yogurts and ice cream, has undertaken arnremarkable set of energy efficiency initiatives at their facility. They have participated in their local utility energyrnefficiency programs provided by Public Service Company of New Hampshire (PSNH). The studies, assessments, andrninstallation discussed in the case study were developed through technical assistance efforts sponsored by PSNH. Wernwill discuss the details of Stonyfield's refrigeration plant and system, and present results associated with thernrefrigeration system energy optimization conducted at the facility.
机译：从制冰到食品加工再到产品保存，工业制冷可用于许多类型的应用中。每当制造过程需要时，工业制冷通常是设备中最大的负载之一。制冷系统由不同的组件组成，包括压缩机，蒸发器，冷凝器和控制装置。每个组件可能来自定制工程系统中的不同制造商，或者设备可能作为整体包装单元提供。定制系统通常是由组件组成的组件，这些组件已在设计操作条件下进行了单独的测试和评级，但不一定评级为Asrnan集成，协调系统。因此，在组装好的制冷设备中，有可能基于实际操作条件和最热条件之间的偏差以及系统中不同组件之间的相互作用，单个组件可能无法提供最佳操作。因此，最终的制冷设备可能无法达到最佳运行状态，从而导致较低的运行效率和较高的运行成本。rn影响制冷系统能耗的因素包括设计和制冷剂的固有效率，设备的状况，控制策略和维护成本。系统的负载曲线（热冷却负载与设计冷却负载的偏差）。在许多情况下，已安装的制冷设备可以从优化过程中受益，该过程包括对关键运行参数的监视，从而根据评估的数据进行后续的控制调整和/或系统运行变化。本文将：提供典型的工业氨制冷系统的概述；讨论系统的各个组成部分，包括构成制冷系统的压缩机，冷凝器，蒸发器和控制装置；并提出了与多级压缩机系统运行，蒸发式冷凝器和浮头压力控制的使用以及顺序优化策略有关的典型节能策略。此外，还将讨论降低制冷负荷的简单低成本方法。展示了与本文讨论的制冷系统节能机会相关的概念。 Stonyfield Farm Yogurt是一家知名的，环保和社会进步的制造商，生产各种全天然和有机酸奶和冰淇淋，其工厂已采取了一系列令人瞩目的节能举措。他们参加了由新罕布什尔州公共服务公司（PSNH）提供的当地公用事业能源效率计划。案例研究中讨论的研究，评估和安装是通过PSNH赞助的技术援助工作而开发的。 Wernwill将讨论Stonyfield制冷厂和系统的细节，并介绍与该设施进行的制冷系统能源优化相关的结果。

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