安装和维护
平衡通风
Air Exchangers exchange stale indoor air with fresh air from the outside. Heat recovery ventilation (HRV) is a system that exhausts air from inside of a home and replaces it with outdoor air. Energy recovery ventilation (ERV) is a system that does everything that an HRV does with the addition of transferring moisture from the exhausted air into the air entering the home and restricting moisture from incoming air. Maintenance of Ventilation Systems
风管气流平衡
Balancing air systems (ductwork) may be accomplished in various ways. The most common method to accomplish ductwork balancing is Proportional Method. Each diffuser is adjusted to supply the right percentage of total air volume in the ductwork.
阀门尺寸和执行器选择
在本指南中，您将了解如何正确选择阀门、执行器和组件的尺寸和选择的 18 个步骤。
谷轮制冷手册下载
这是一个由五个系列的出版物组成的艾默生气候技术公司制冷手册。尽管每个单独的部分都涵盖了制冷理论和实践的特定领域，但每个后续出版物都假定您对前面各节中介绍的材料有基本的了解。
Refrigerant Piping (Part1)
Good piping design results in a balance between the initial cost, pressure drop, and system reliability. The initial cost is impacted by the diameter and layout of the piping. The pressure drop in the piping must be minimized to avoid adversely affecting performance and capacity. Because almost all field-piped systems have compressor oil passing through the refrigeration circuit and back to the compressor, a minimum velocity must be maintained in the piping so that sufficient oil is returned to the compressor sump at full and part load conditions. Several HVAC systems require field refrigeration piping to be designed and installed on-site. Examples include Condensing units, Direct expansion (DX) coil in air handlers, Remote evaporators with air-cooled chillers and Chiller with a remote air-cooled condensers. This Guide covers R-22, R-407C, R-410A, and R-134a used in commercial air conditioning systems.
不锈钢的维护和清洁
不锈钢在制造过程中通过形成氧化铬表面膜来提供卓越的耐腐蚀性。为了确保最大程度的腐蚀保护，不锈钢必须保持清洁，并有足够的氧气供应，以与不锈钢中的铬结合形成“氧化铬”，即保护性钝化层。不锈钢是最具成本效益的建筑材料，可延长 HVAC-R 行业中冷却塔、闭路冷却器或蒸发冷凝器的使用寿命。
并联冷水机系统
冷冻水由冷冻水或主泵通过两个冷却器循环到负载并返回冷却器。冷冻水回路可以是恒定流量或变流量。变流量系统增加了复杂性，但显着节省了泵的工作量。它们还解决了并联冷水机、恒定流量时出现的冷水机排序问题。为了在 HVAC 设计中提供一些冗余，大多数设计人员将需要两个或更多冷水机组。多个冷却器还提供了改善整体系统部分负载性能和降低能耗的机会。并联冷水机组设计简单，并且可以轻松修改以适应可变的一次流量。
制冷剂管道 - 第 2 部分
在这篇文章中，我们将继续进行有关如何确定制冷剂管道尺寸的全面培训。我们将涵盖该过程的所有重要方面，包括确定管道尺寸、压降和其他因素。我们还将讨论制冷剂管路尺寸、制冷剂管路等效长度以及如何确定等效长度等主题。通过本培训，您将拥有在任何情况下准确、正确地确定制冷剂管道尺寸的知识和信心。
排除灌溉泵和阀门的常见问题
灌溉系统需要定期维护以确保最佳性能。了解泵和阀门的常见问题，例如低压、流量减少和泄漏，并了解如何排除故障和预防这些问题。定期维护和及时关注问题有助于延长系统组件的使用寿命并保持景观健康。
调试
风管气流平衡
Balancing air systems (ductwork) may be accomplished in various ways. The most common method to accomplish ductwork balancing is Proportional Method. Each diffuser is adjusted to supply the right percentage of total air volume in the ductwork.
调试过程
调试过程——以质量为导向的过程，用于实现、验证和记录设施、系统和组件的性能是否满足既定目标和标准。
暖通空调组件启动
HVAC (Heating, Ventilation and Airconditioning) component start-up procedures describe how to start the operation of each component. They specify the methods to be used and the checks that are needed. Start-ups and related measurements are carried out by the contractor. Commissioning provider assists the contractor in the beginning of each start-up process and reviews that no systematic errors are made.