Laserfiche WebLink
Simple Heating System Size:Wad�HpI gton State <br /> This heating system sizing calculator is basetmiil!the Prescriptive Requirements of the 2012 Washini. LII Ltate 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 2012 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 /> Q,Forced lair.... ._ 0 Heat Pump <br /> Plan 1816 <br /> Heating System Type: <br /> To see detailed instructions for each section,place your cursor on the word"Instructions". <br /> Design Temperature <br /> Instructions Design Temperature Difference(AT) 46 <br /> Lynnwood AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Instructions Conditioned Floor Area(sq ft) 1,816 <br /> Average Ceiling Height Conditioned Volume <br /> instructions Average Ceiling Height(ft) 8.5, 15,436 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions 0.30 245 73.50 <br /> Insulation • <br /> Attic U-Factor X Area = UA <br /> Instructions R-49 0.026 941 24.47 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA <br /> Instructions No Vaulted Ceilings in this project. LI, -- - - - <br /> Above Grade Walls(see Figure 1) U-Factor Area UA <br /> instructions 0.056 21550-� 117.60 <br /> r — <br /> Floors U-Factor Area UA <br /> Instructions 0.029 200 5.80 <br /> R-30 <br /> .rvw.s c�xyc:ur <br /> Below Grade Walls(see Figure 1) U-Factor Area UA <br /> instructions <br /> No Below Grade Walls in this project. '�. <br /> Slab Below Grade(see Figure 1) F-Factor Length UA <br /> htstructions h` . <br /> • <br /> No Slab Below Grade in this project , <br /> Slab on Grade(seeFfgurel) F-Factor Length UA <br /> R-10 Perimeter -, 0.540 41 22.14 <br /> Location of Ducts <br /> Instructions . <br /> tit <br /> Duct Leakage Coefficient <br /> Uncondtdoned Space !'. 1.10 <br /> Sum of UA 243.51 <br /> Envelope Heat Load 11,201 Btu/Hour <br /> Figure 1. Sum ofUAXAT <br /> Air Leakage Heat Load 7,669 Btu/Hour <br /> VolumeX 0.6XATX.018 <br /> Above Grade Building Design Heat Load 18,870 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> ,„:Above: <br /> "^- Building and Duct Heat Load 20,757 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 29,060 Btu/Hour <br /> Building and Duct Heat Loss X 1.90 for Forced Air Furnace <br /> Building and Duct Heat Loss X 1.25 for Heat Pump , <br /> .r , (07/01/13) <br />