2017 79TH ST SE 2017-09-19 - Laserfiche WebLink

Simple Heating System Size:Washington State This heating system sizing calculator is based on the Prescriptive Reauirements 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 Plan 2407 Heating System Tvpe: OO All Other Systems O Heat Pump To see detailed instructions for each section,place your cursor on the word"Instructions". Design Temperature .. Instructions ... - - Design Temperature Difference(AT) 49 I Everett Paine AFBs. AT=Indoor(70 degrees)-Outdoor Design Temp Area of Building Conditioned Floor Area Instructions Conditioned Floor Area(sq ft) 2,407 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height(ft) 8.5 20,460 Glazing and Doors U-Factor X Area = UA instructions 0.30 448 134.40 Skylights U-Factor X Area = UA Instructions 0.50 --- Insulation Attic U-Factor X Area = UA Instructions _- -- - 0.026 "1,120 29.12 I R_4o Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA Instructions - - - — R_38 vented . � 0.027 Above Grade Walls(see_Figure 1) U-Factor X Area UA Instructions -- -- -- _ j 0.056 2,700 151.20 R-21 Intermediate -f Floors U-Factor X Area UA Instructions0.029 590 17.11 �R30 Below Grade Walls(see Figure p U-Factor X Area UA Instructions ,- i ---------- project. ._'-------- �.,.,I - 500 No Below Grade Walls in this ro ect. f -- Slab Below Grade(see Finure n F-Factor X Length UA Instructions Select conditioning No Selection -- Slab on Grade(seeFrgure 1) F-Factor X Length UA Instructions i R-10 PerimeterI.- 0.540 1 136 73.44 Location of Ducts Instructions Duct Leakage Coefficient I No Ducts --- 1.00 Sum of UA 405.27 Envelope Heat Load 19,858 Btu/Hour Figure 1. SumofUAXAT Air Leakage Heat Load 10,827 Btu/Hour Volume X 0.6 X AT X.018 Above Grade Building Design Heat Load 30,685 Btu/Hour " * Air Leakage+Envelope Heat Loss Building and Duct Heat Load 30,685 Btu/Hour Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 Ducts in conditioned space:Sum of Building Heat Lass X 1 Maximum Heat Equipment Output 42,960 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)