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Simple Heating System Size:Washington State <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State Energy Code(WSEC)and ACCA <br /> Manuals J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling <br /> loads. <br /> The glazing(window)and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of <br /> 0.30. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2015 WSEC. <br /> Please fill out all of the green drop-downs and boxes that are applicable to your project.As you make selections in the drop-downs for each section, <br /> some values will be calculated for you.If you do not see the selection you need in the drop-down options,please call the WSU Energy Extension <br /> Program at(360)956-2042 for assistance. <br /> Project Information Contact Information <br /> Bahk Resid Fire Repair GK Structural Engineering,LLC <br /> 10107 Idaho Ave 14703 1st Lane NE,Ste 205 <br /> Everett,WA 98204 Duvall,WA 98019 <br /> Heating System Type: 0411 Other Systems °Heat Pump <br /> To see detailed instructions for each section,place your cursor on the word"Instructions". <br /> Design Temperature <br /> _ Design Temperature Difference(AT) 47 <br /> Everett JC 6.7-=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Conditioned Floor Area(sq ft) 1,710 <br /> Average Ceiling Height Conditioned Volume <br /> Average Ceiling Height(ft) 8.0 13,680 <br /> Glazing and Doors U-Factor X Area = UA <br /> 0.30 313 94.02 <br /> Skylights U-Factor X Area = UA <br /> 0.50 0 -- <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> 0.026 1,074 27.92 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> Select R-Value . No selection <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> R-21 Intermediate �., 0.056 3,127 175.11 <br /> Floors U-Factor X Area UA <br /> R.38 __- ----.-. ._-- J 0.025 324 8.10 <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> Select R-value No selection -- <br /> Slab Below Grade(see Figure 1) F-Factor X Len r th UA <br /> 1R-5 Thermal Break at slab edge V 0.570 132 75.24 <br /> Slab on Grade(see Figure 11 F-Factor XLe� UA <br /> select R-Value <br /> No selection <br /> Location of Ducts <br /> Duct Leakage Coefficient <br /> Unconditioned Space V <br /> 1.10 <br /> Sum of UA 380.40 <br /> Envelope Heat Load 17,879 Btu I Hour <br /> Figure 1. Sum ofuAX AT <br /> ^., Air Leakage Heat Load 6,944 Btu/Hour <br /> Volume X 0.6 X AT X.018 <br /> Above Grade ti Building Design Heat Load 24,823 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> Below Grade <br /> Building and Duct Heat Load 27,305 Btu/Hour <br /> Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 //// <br /> Ducts in conditioned space:Sum of Building Heat Loss X 1 / <br /> Maximum Heat Equipment Output 38,227 Btu I Hour (/ <br /> Building and Duct Heat Loss X 1.40 for Forced Air Furnace <br /> Building and Duct Heat Loss X 1.25 for Heat Pump <br /> (07/01/13) <br />