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Simple Heating System Size: Washington State
<br /> This heatinp svstem sizinq calculator is based on the Prescriptive Requirements of the 2012 Washinqton State EnerqV Code(WSEC)and ACCA
<br /> Manuals J and S.This calculator will calculate heatinq loads onlv.ACCA procedures for sizinq coolincLsvstems should be used to determine coolinq
<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 Infomiation Contact Information
<br /> Unit E3 Townhome Polygon Northwest
<br /> Silver Lake Townhomes Alaina Robertson
<br /> Everett,Washington (425)606-0005
<br /> Heatinq Svstem Type: OO Fo��ed A��F���a�e Q Heat Pump
<br /> To see detailed instructions for each section,place your cursor on the word"Instructions".
<br /> Desiqn Temperature
<br /> �"`ef1°�101`> - � Design Temperature Difference(oT) 47
<br /> t�Cre.tt)(, � oT=Indoor(70 deyrees)-Oufdoor Design Temp
<br /> .,,r t+ ,......:...
<br /> Area of Buildinq
<br /> Conditioned Floor Area
<br /> i��;i��,�i��,,;-; Conditioned Floor Area(sq ft) 1,585
<br /> Average Ceiling Height Conditioned Volume
<br /> ",`r'�`"`t'°"`; Average Ceiling Height(ft) 8.5 13,473
<br /> Glazinq and Doors U-Factor X Area = UA
<br /> �"`'"""'>"". 0.30 269 8070
<br /> Insulation
<br /> Attic U-Factor X Area = UA
<br /> b,��.;�,��:r�,��-. -� � 0.026 263 6.84
<br /> R�49 ......... �
<br /> � �..,
<br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA
<br /> i�,�.i���ct�����,: �. � �
<br /> �, tao Ve��ICd COiI�ng51i1 th�s proJ@Ct.
<br /> ---
<br /> t.. w�..:�yi.
<br /> Above Grade Walls(seeFiyure�) U-Factor Area UA
<br /> �,,�.n;�,.in,���, .""'.,"`�..."".""" i 0.056 528 29.57
<br /> R-21 �
<br /> Floors � � U-Factor Area UA
<br /> �n:;tructions .... ,,�_..__.__ .__,_ ._.. �
<br /> ,�.}�, . 0.029 379 10.99
<br /> �
<br /> Below Grade Walls�SeeF�g�.e+J U-Factor Area UA
<br /> i�w�����.���,�_. - . � 0
<br /> '� No(3�layv Grddc 1Valls!n t1�is Pro�ec.L � --- ---
<br /> Slab Below Grade�5ee Fro�re n F-Factor Length UA
<br /> �,�e,;ructlon; `_ _—. �
<br /> "'
<br /> , '.c Slala tielow GrdC.k�nt thi;pro;eCL �
<br /> Slab on Grade�SeeFrq�.e n � � F-Factor Length UA
<br /> �"`'t''"��10"' "� � -�' 0.540 81 43.88
<br /> � iz�ioFe��rete� - � �
<br /> _�..,�`�.rJ
<br /> Location of Ducts
<br /> °i�'"`°`"'°° Duct Leakage Coefficient
<br /> ConciGrneil Space �
<br /> ��.�__..__...__.. .__�. -�...,...,��:....._:____.__ 1.00
<br /> Sum of UA 171.97
<br /> Envelope Heat Load 8,083 Btu/Hour
<br /> Fipure 1, s�,��oruaxnr
<br /> Air Leakage Heat Load 6,839 Btu/Hour
<br /> ""�~N�_�.,, Volume X O.G X AT X.018
<br /> abo�e��aae Building Design Heat Load 14,921 Btu/Hour
<br /> <g„�, : � � � � Air Leakage+6nelope Heat Loss
<br /> � � Building and Duct Heat Load 14,921 Btu!Hour
<br /> Ducts in uncondilioned space:Sum o/Building Heat Loss X 1.10
<br /> Ducts in condifioned space:Sum oBuilding Heat Loss X 7
<br /> Maximum Heat Equipment Output 20,890 Btu/Hour
<br /> Budding and Duct Heat Loss X 1.40 lor Forced Aii Fumace
<br /> Building and Ducf Heaf Loss X L25 for Heat Pump
<br /> ( � - :
<br /> � (07/01/13)
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