1907 78TH PL SE 2018-03-29 - Laserfiche WebLink

Simple Heating System Size: Washington State This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 Washington State Energy Code(WSEC)and ACCA Manuals J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling_ loads. The glazing(window)and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of 0.30. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2012 WSEC. 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, 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 Program at(360)956-2042 for assistance. Project Information Contact Information Platt 2435 Heating System Type: To see detailed instructions for each section,place your cursor on the word"Instructions". Design Temperature Instructions T.< < Design Temperature Difference(AT) 46 Lynnwood J# AT=Indoor(70 degrees)-Outdoor Design Temp Area of Building Conditioned Floor Area instructions Conditioned Floor Area(sq ft) Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height(ft) 8.5 20,698 Glazing and Doors U-Factor X Area = UA Instructions 0.30 438 131.40 Insulation Attic U-Factor X Area = UA instructions -49, R 0.026 996. 25.90 Single Rafter or Joist Vaulted Ceilings U-Factor Area UA Instructions No Vaulted Ceilings in this project e�Wtlfifet4"3 Above Grade Walls(see Figure 1) U-Factor Area UA Instructions ( 0.056 . 2,500' 140.00 R-21 ... Floors U-Factor Area UA Instructions R-30 •.i U 0.029 470 13.63 • Below Grade Walls(see Figure 1) U-Factor Area UA Instructions No Below Grade Walls In this project. � --- Slab Below Grade(see Figure.. F-Factor Length UA Instructions _.•• . No Slab Below Grade In this project Slab on Grade(see Figure t) F-Factor Length UA instructions 0.540 82 44.28 R-10 Perimeter^ Location of Ducts .. ._.. . instructions .. ..�....-<.,.,.., .....,w... Duct Leakage Coefficient Unconditioned Space �' 1.10 • Sum of UA 355.21 Envelope Heat Load 16,339 Btu/Hour Figure 1. Sum ofUAXAT Air Leakage Heat Load 10,283 Btu/Hour e"may„ VolumeX 0.6XATX.018 Above Grade Building Design Heat Load 26,622 Btu/Hour Air Leakage+Envelope Heat Loss Building and Duct Heat Load 29,284 Btu/Hour Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 Ducts in conditioned space:Sum of Building Heat Loss X 1 Maximum Heat Equipment Output 40,998 Btu/Hour Building and Duct Heat Loss X 1.40 for Forced Air Furnace Building and Duct Heat Loss X 1.25 for Heat Pump - (07/01/13)