YORK® Commercial Packaged Rooftop Units offer low operating costs, easy installation and Smart Equipment controls for advanced, high-efficiency comfort.

Improvement of evaporator refrigerant / two-phase heat transfer. Increased suction density improves compressor volumetric efficiency. Variable sensible heat ratio optimizes airside performance. Releases constraints on operating parameters. The optimizing controller tuned the RTU’s operation according to varying conditions as expected.

AAON sets the standard for commercial packaged rooftop units in performance, serviceability, and long-term value. The world's best RTU. Built just for you. Widely considered the industry's …

Jan 11, 2022 · DX, or direct expansion, HVAC units use a condensed refrigerant to cool air. The unit cools air by passing the condensed refrigerant through a heat exchanger inside the building to be cooled. In this part of the unit, called the evaporator, the refrigerant expands as it absorbs heat, eventually converting to a gas.

Mar 17, 2025 · 本文将深入探讨RTU遥测终端机的工作原理，并结合DX-RTU-1（含屏）遥测终端机的实际应用，展示其在生态环境监测和污染源监控中的优势和功能。

遥测终端机DX-RTU-1主要特点： 1.采用高性能工业级 32 位通信处理器； 2.超低功耗：静态电流<1mA (12V)，待机工作电流<10mA (12V)； 3.宽电压设计：DC 6-30V，具有反接保护和短路保护功能； 4.防雷设计:所有输入输出端口采用抗雷击设计，可省缺外置防雷保护模块；

Air-Handling Units the job when units are required without compressors. The unit will be built without a condensing section and walk-in compressor and control vestibule. All other features and options are readily available. Air handling units may include the following Supplied with a DX coil and expansion valves.

The RTU is the most widely used commercial heating and the cooling unit found in the U.S. The rooftop unit is sometimes called a package unit, as all its components are contained in one unit. The RTU is usually a direct-expansion (DX) unitary system, which means that the air is cooled by a refrigerant, and can be either fan-cooled or water-cooled.

Jan 18, 2024 · 遥测终端机DX-RTU-1主要特点： 1.采用高性能工业级 32 位通信处理器； 2.超低功耗：静态电流<1mA (12V)，待机工作电流<10mA (12V)； 3.宽电压设计：DC 6-30V，具有反接保护和短路保护功能； 4.防雷设计:所有输入输出端口采用抗雷击设计，可省缺外置防雷保护模块；

DX-RTU-1（含屏）遥测终端机是生态环境监测、污染源监控专用数据采集器。 支持有线以太网络、无线2G/4G网络，满足不同环境下对远程通信的要求。