Daikin released a water-side economizer (WSE) because of its Pathfinder® Air-cooled Screw Chiller. The WSE, providing what’s referred to as “free cooling commonly, ” uses outdoor surroundings to cool water along with other process fluids naturally, reducing compressor function and increasing chiller performance. The Pathfinder with Totally free Cooling operates without needing water from the cooling tower also. This cuts water make use of drastically, as well as charges for drinking water, sewer, and chemical therapy.
“Water availability is needs to turn into a widespread issue,” said Hugh Hudson, information center market supervisor, Daikin Applied. “For most organizations, drinking water conservation is section of their sustainability initiatives. And some facilities come in areas with drinking water limitations. By omitting a cooling tower or evaporative coolant system, free-cooling chillers place much less tension on municipal infrastructure and the surroundings.”
Most free-cooling techniques require two separate devices, the chiller and dry cooler, plus a layer of settings for coordination. With the addition of an on-panel economizer to the Pathfinder, both tuned at the factory to optimize efficiency and control, the Daikin technologies decreases set up and commissioning periods, and related expenses. General, the Pathfinder with Totally free Cooling can trim upfront funds costs by around 40% in comparison to traditional economizer apps.
The included waterside economizer (Free COOLANT SYSTEM) option adds fluid-to-air high temperature exchanger coils in collection with the airflow of the principal chiller condenser coils to be able to reject warmth to the outdoor air flow with no need for vapor compression cooling. This kind of cooling is achievable once the outdoor air temp is usually colder than cooling liquid temperature requirements.
The incorporated layout is smaller sized also, reducing air-movement clearances and interconnecting pipes. Plus, the chiller’s pipe headers are constructed with multi-layer polypropylene to get rid of corrosion and contaminants while trimming bodyweight and the strain on a building’s roof. They’re located on the external of the machine for maintenance and support access, plus they are removable also, allowing the complete unit to squeeze in a standard delivery container.
Efficient cooling in an inferior footprint permits larger facility level and higher energy densities. It allows code-compliant designs aswell, helping meet ASHRAE 90.1 and 90.4 standards, along with other nearby and regional codes.
“The Pathfinder with Totally free Cooling is suitable for data centers particularly, which are developing in number rapidly, size, and strength density,” Hudson mentioned. “The chiller-WSE combination simplifies structure, which ultimately lowers cost while decreasing the chance of installation schedule and errors overruns.”
The Pathfinder functions within three different modes-totally free cooling, mechanical, and hybrid-to optimize energy functionality and, for a information center, improve power use performance (PUE). And at reduced ambient temperature ranges, the WSE coils reject heat, permitting the chiller compressors to down shut, eliminating power draw completely. Daikin’s proprietary microchannel liquid coil design furthermore allows the machine to operate at a lesser air pressure fall, which decreases the power necessary to run the enthusiasts, furthering efficiency and adding to a faster payback.
Once the device operates in higher ambient temperature circumstances, the Pathfinder utilizes Daikin’s Variable Quantity Ratio (VVR®) technologies and a variable regularity drive to increase efficiency, leading to substantial cost benefits for building owners on the full life of the gear. This is actually the first factory-packaged air-cooled chiller that delivers both a built-in VVR and WSE compressor technology.