NEW AR-L AR-C AND HIGH-CAPACITY LINEAR COOLING PANELS. Higher energy efficiency. Increased thermal comfort

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1 NEW AR-C AND HIGH-CAPACITY LINEAR COOLING PANELS Higher energy efficiency Increased thermal comfort Higher capacity than standard radiant ceilings Significant space savings Reduced new construction costs Virtually no maintenance costs Increased ceiling flexibility

2 PANEL FRONT PANEL BACK The and AR-C are high capacity radiant cooling linear systems based on the principles of radiant technology. By separating the linear radiant elements with a gap, the and AR-C couple the radiant cooling effects of standard radiant panels with a convective component. Chilled and AR-C ceilings create natural convection by cooling the surrounding air as it passes over the surface facing the plenum. As the denser air falls into the occupied zone, warmer air is pulled over the element, incorporating convective cooling capacity of the and AR-C with the radiant capacity of the cool surface. The approximate breakdown of heat transfer of the chilled radiant system is 30% by thermal radiation and 70% by natural convection. When used for heating the and AR-C transfer heat mainly through thermal radiation with room surfaces, where they increase the average unheated surface temperature of the room.

3 Thermal Natural ThermalConvection AR-C Thermal Natural ThermalConvection ENERGY EFFICIENCY The specific heat capacity of water is four times higher than air. Therefore, to remove a given amount of heat from a building using or AR-C radiant hydronic system Copper an Tubes requires 25% of the energy required by an all-air system. Because and AR-C are water-only systems, they can handle the sensible portion of a building s HVAC load and must be paired with a fresh air system for ventilation and latent load removal. MODELS Return to Room Return to Room Cross Brace Return to Room Panels are available in either an elliptical section or a flat surface profile. The surface profile is dependent on the application and architectural aesthetics of each unique project. Contact Steel Ceilings for more information and suggestions on which profile to use for your application.

4 Multiple profiles in assembled unit Both surface profiles are designed to allow air movement through openings between the profiles, increasing the capacity of the unit and providing an effective means of dealing with sensible cooling loads. and AR-C can be installed in a variety of applications including full or cloud ceiling areas. The visible surfaces of the aluminum extrusion and bracing are usually painted white. Optional custom colors are available which meet the emissivity requirements 0.625" O.D. (0.50" nominal) copper tubing rails Cooling fins 1" typical gap between profiles 5" typical profile width TYPICAL DESIGN The precision-extruded aluminum profiles are formed with two conduction rails to accommodate a single or twin copper tube and provide cooling fins which are rounded off at the outer end. The extruded profiles are five inches wide with lengths and the number of profiles variable to fit virtually any design. The gap between the extruded profiles is typically 1.0 inch. Variable lengths available to suit virtually any application The copper tube is press-fit into the conducting rails of the extrusion ensuring continuous contact between the copper and the aluminum along the entire length providing optimal heat transfer. Copper tubing with a

5 Cross Brace Cut Out inch O.D., (1/2 inch nominal) is used in the fabrication of the system. The connections between the modules and the distribution lines can be made via copper tubing and/or flexible metal hoses with stainless steel sheathing. After installation, the entire system must be checked for leaks The supply cold water temperature should be selected to be above the dew point of the space to avoid condensation. Dew point sensors can be employed to monitor, and if need be, adjust the water temperature. Special design options such as folding modules, sprinklers, lighting openings, air intake, etc., are available. Torsion Springs ACCESS PANEL DESIGN Panels can be designed into the and AR-C modules to allow access to the plenum area. The access panels are designed with torsion springs allowing the panel to be pulled straight down without any special tools and swung out of the way. Access panels can be placed within the ceiling system where needed.

6 PERFORMANCE DATA BTUH/FT Capacity Output ROOM AIR - MWT BASED ON 30% AREA VS. OPEN AREA Correction Factor PERCENT SAIL AREA/OPEN AREA BTUH/FT AR-C Capacity Output ROOM AIR - MWT BASED ON 30% AR-C AREA VS. OPEN AREA Correction Factor PERCENT SAIL AREA/OPEN AREA INSTALLATION Radiant panels are designed with crosschannels near each end of the panels with an additional two to five cross-channels (based on the length of the panel) spread out over the length of the panel. The channels are used for bracing the panel as well as hanging the panel. The radiant panels should be suspended per local building codes using such items as threaded rod or wire with additional options of carabineer etc. INSTALLATION OPTIONS Within a suspended ceiling: Ensure that the top of the panel is at least 2 from the structure above Mounted in visible sections: Panel sections should be separated by ½ -1 Concealed installation application above perforated panels: Ensure the panel is at least 2 above either the perforated panel or the overhead structure

7 RADIANT SYSTEM BENEFITS HIGHER ENERGY EFFICIENCY INCREASED THERMAL COMFORT HIGHER CAPACITY SIGNIFICANT SPACE SAVINGS The heating capacity of water is four times higher than air, providing a significant transport energy savings when compared to an all-air system. The thermal environment has a significant effect on the performance of building occupants. The high-convective component can give the and AR-C greater capacity than a standard radiant ceiling. Radiant systems significantly reduce both the volume and velocity of air transported through the building, which reduces the size of the plenum and duct work. Radiant systems only require 25% of the building volume occupied by a traditional air-conditioning system. NEW BUILDINGS Floor height can be reduced since a large plenum area is not needed resulting in a reduced overall building height and a corresponding reduction in construction costs. EXISTING BUILDINGS COSTS Increased flexibility through higher ceilings. Cooling systems can be installed in buildings which were previously impossible to fit with conventional all-air systems. Lower energy cost due to higher efficiency Virtually no maintenance costs High quality long-life product Systems can be easily reconfigured to adapt to changes in the floor plan layout Steel Ceilings Inc. 451 East Coshocton Street Johnstown, OH T: (800) F: (740) E: info@steelceilings.com