3102-3 Heating Simple Heating System Size: Washington State
This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 Washington State Enerqv 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#3102-3 LOT29 RiPPEL EVE;GFEEN STATE BU I LDERS
JIHVSSV DR cE J57 KELLY
YELM,WA 98439 253-255-1616
Heating System Type: O 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(4T) 53
Tumwater AT=Indoor(70 degrees)-Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area(sq ft) 3,090
Average Ceiling Height Conditioned Volume
Instructions Average Ceiling Height(ft) 8.5 26,265
Glazing and Doors U-Factor X Area = UA
Instructions
0.30 450 135.00
Skylights U-Factor X Area = UA
Instructions 0.50
Insulation
Attic U-Factor X Area = UA
Instructic,_ j R-49 0.026 1,314 34.16
L �
Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA
Instructions j
l No Vaulted Ceilings in this project. �
Above Grade Walls(see Figure 1) U-Factor X Area UA
Instructions 0.056 3,373 188.89
R-21 Intermediate �
Floors U-Factor X Area UA
Instructions j R-30 0.029 3,090 89.61
L �
Below Grade Walls(see Figure 1) U-Factor X Area UA
Instructions No --- ---
l Below Grade Walls in this project. �
Slab Below Grade(see Figure 1) F-Factor X Length UA
Instructions
No Slab Below Grade in this project. � ---
Slab on Grade(see Figure 1) F-Factor X Length UA
Instructions
No Slab on Grade in this project. �
Location of Ducts
Instructions Duct Leakage Coefficient
Conditioned Space
1.00
Sum of UA 447.66
Envelope Heat Load 23,726 Btu/Hour
Figure 1. Sum ofuAxAT
Air Leakage Heat Load 15,034 Btu/Hour
VolumeX 0.6XATX.018
Above Qade Building Design Heat Load 38,760 Btu/Hour
Air Leakage+Envelope Heat Loss
Building and Duct Heat Load 38,760 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 54,264 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)