Air conditioning

After several retrofit projects, the U.S. Steel Tower has installed more than 150 Danfoss VLT® Drives, which are producing more than $1.1 million in documented energy savings and helping to give the building a greener reputation.

For the mechanical systems that manage the indoor environment in this desert city, consistency and simplicity are desirable traits. Owners of casino hotels and restaurants that operate around-the-clock require HVAC equipment that is reliable and easy to operate and maintain.

VFDs are used for a wide range of motors, not just RTU fan motors. Danfoss was able to pre-program the VLT® Micro Drive specifically for RTU applications and offer it to contractors. Because the programming work is done upfront, the contractor simply mounts the drive inside the RTU, wires it up, and enters the nameplate installation. Most mechanical contractors can do the job in about half a day.

Improving indoor air quality by increasing the amount of outdoor air (OA) entering a building is necessary in many facilities. Depending on occupant density, some buildings may require 20 cubic feet per minute (CFM) of outdoor air per person, a volume of air that can increase air-conditioning costs.

A lynchpin of our modern economy, data centers demand the highest levels of security, reliability, and uptime. Server rooms power small- to medium-sized businesses, enterprise data centers support major corporations, and server farms host cloud computing services. Keeping up with the explosive growth of digital content, big data, e-commerce, and Internet traffic is making data centers one of the fastest growing consumers of electricity in developed countries.

Inside a building, heat is generated by people, processes, equipment, and lighting - factors that constitute the internal load. Outside, the climate and thermal performance of the building’s exterior - including the amount of insulation, number of windows, and whether the building is north or south facing - comprise the external load.