Presentation on theme: "Snow Melting 5) Calculating the Circuit Information Divide total tubing by max. circuit length (round up)"— Presentation transcript:
Snow Melting 5) Calculating the Circuit Information Divide total tubing by max. circuit length (round up)
Snow Melting 6) Water/ Glycol Design Selecting the percentage of glycol
Snow Melting 7) Flow Rates (gpm) gpm = Btus T x 500 short form for snow melting 30 F° Btus 15,000 Calculate flow for each snow melting area Divide by number of circuits in area to get gpm per circuit Use flow per circuit to find pressure drop
Snow Melting 8) Pressure Drop gpm through 5/8" PEX = feet of head loss per foot of tubing Circuit length = 250’ Pressure drop = length x loss per foot 250 x = ft. head
Snow Melting 9) Pressure Drop and Flow Rate Adjustments Use the table to adjust the pressure drop and flow rates according to % Glycol mixture
Snow Melting10) Pump Sizing Add gpm of all areas together Take highest head loss in tubing Add any additional head loss (other piping, valves, etc.) Choose pump from manufacturer curves
Snow Melting Cross Sections Slab on grade with insulation
Snow Melting Cross Sections Pavers over sand or stone dust bed with insulation
Snow Melting Cross Sections Asphalt over sand or stone dust bed with insulation
Snow Melting Cross Sections Slab over structural slab
Snow Melting Construction Utilize expansion joints as with a radiant slab (100 foot perimeters, 25’ x 25’ max) Use bend supports and sleeves to protect tubing at all penetration points and expansion joints Insulate under snow melt area Insulate sides of slab (very high heat loss)
Snow Melting Tubing Layout: standard
Snow Melting Tubing Layout: stairs
Snow Melting Selecting the Control Package Basic Digital Snow Melting Control II package –Economical system required –Snow sensor cannot be mounted in the thermal mass
Climate Mat Header after finish pour Assembled header Pressurized 20’ leaders
Climate Mat being rolled out.
Kyle Busch Racing – Garage - Radiant KYLE BUSCH GARAGE – HILLS SERVICE CO. Project location – Mooresville, North Carolina Contractor – Hills Service Company Viega employees assisted in the installation of the Viega Climate Mat Radiant system for this 60,000 square foot race shop. The Viega Climate Mat was selected due to the functionality and ease of installation in comparison to other radiant systems in the market. This project will achieve a greater “GREEN” number or “LEAD POINTS” due to the use of Geothermal and having it tied into the Viega Radiant System.
Kyle Busch Racing – Garage - Radiant Main garage area prior to install. Jay & Kevin work diligently to find the Climate Mates to place in the garage and wash bay areas. Garry is busy hammering down the Climate Mate. Main garage after Climate Mate install. Example of the proper spacing and install of Climate Mat. Example of one of the connected manifolds for the Kyle Busch garage.