Laserfiche WebLink
Simple Heating System Size: Was ton State <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 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 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 /> Linda Combs American Home Planners <br /> Lauren Vital <br /> Tax ID# (425)760-5000 <br /> Heating System Type: C Forced Air Furnace 0 Heat Pump <br /> To see detailed instructions for each section,place your cursor on the word'Instructions" <br /> Desian Temperature <br /> Instructions _ Design Temperature Difference(AT) 49 <br /> Everett Paine AFB �' I AT=Indoor 0 degrees)-Outdoor Design Tem <br /> Area of Building <br /> Conditioned Floor Area <br /> '"`-t' clic"s Conditioned Floor Area(sq ft) 975 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 9.0 8,775 <br /> Glazina and Doors U-Factor X Area = UA <br /> Instructions 0.30 143 42.90 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions LR-49 - -----_--_ — - —I 0.026 864 22.46 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA <br /> Instructions 0.027 111 3.00 <br /> R-38 <br /> Above <br /> J <br /> Above Grade Walls(see Figure 1) U-Factor Area UA <br /> Instructions No selection 1,224 <br /> Select R-Value—_-_.------,--------—� <br /> Floors U-Factor Area UA <br /> Instructions R-30 0.029 975 28.28 <br /> �. <br /> Below Grade Walls(see Figure 1) U-Factor Area UA <br /> Insti actions ___ ___ <br /> No Below Grade Walls In this project. <br /> C------- -..-----n- ------- <br /> Slab Below Grade(see Figure 1) F-Factor Length <br /> L�J UA <br /> No Slab Below Grade In this project. <br /> Stab on Grade(see Figure 1) F-Factor Length UA <br /> Instructions - <br /> No Slab on Grade In this project. <br /> Location of Ducts <br /> rtruct!°r` Duct Leakage Coefficient <br /> Unconditioned Space 1.10 <br /> Sum of UA 96.64 <br /> Envelope Heat Load 4,735 Btu/Hour <br /> Figure 1. SumofUAXAT <br /> tom, Air Leakage Heat Load 4,644 Btu/Hour <br /> VotumeX 0.6XATX.018 <br /> Above Graae I Building Design Heat Load 9,379 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> - Building and Duct Heat Load 10,317 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 12,896 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 /> 2 <br /> i J (07/01/13) <br />