REVIEWED BLD BLD2021-0895+Energy_Calculations+6.26.2021_10.26.20_AM+2271130BLD2021-0895 RECEIVED
iple Heating System Size: Washington State Jul 16 2021
heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code (WSEC) and CITY OF EDMONDS
A Manuals J and S. This tool will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to determine D VELOPMENT SERVICES
iciloads. I DEPARTMENT
Please complete 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 contact the WSU
Energy Program at energycode@energy.wsu.edu or (360) 956-2042 for assistance.
Project Information Contact Information
131 Skyline Drive John Rientjes
Edmonds, WA 425-864-3049
jrientjes@gmail.com
Heating System Type: Q All other systems • Heat Pump
To see detailed instructions for each section, place your cursor on the word 'Instructions"
Design Temperature
Instructions Design Temperature Difference (AT) 46
Edmonds AT = Indoor (70 degrees) - Outdoor Design Temp
Area of Buildinq
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
3,700
Average Ceiling Height
Conditioned Volume
Instructions Average Ceiling Height (ft)
9.0
33,300
Glazing and Doors
U-Factor
X Area =
UA
Instructions
�FED .30 Ell
0.300
527
158.10
Skylights
U-Factor
X Area =
UA
Instructions
0.50
Insulation
Attic
U-Factor
X Area =
UA
Instructions R-49 Ell
0.026
2,680
69.68
Single Rafter or Joist Vaulted Ceilings
U-Factor
X Area
UA
Instructions Select R-Value -
4
No selection
---
Above Grade Walls (seeFigurel)
U-Factor
X Area
UA
Instructions I R-21 Intermediate
0.056
2,997
167.83
Floors
U-Factor
X Area
UA
Instructions R-30 I
J
0.029
2,163
62.73
Below Grade Walls (see Figure1)
U-Factor
X Area
UA
Instructions R-21 Interior I
J
0.042
792
33.26
Slab Below Grade (see Figure p
F-Factor
X Length
UA
Instructions R-10 Fully insulated I
0.303
1,537
465.71
Slab on Grade (see Figure1)
F-Factor
X Length
UA
Instructions
Select R-Value
No selection
---
Location of Ducts
Instructions
Duct
Leakage Coefficient
- Unconditioned Space L
1.10
Sum of UA 957.31
Envelope Heat Load 44,036 Btu / Hour
Ficiure 1. Sum of UA x AT
Air Leakage Heat Load 16,543 Btu / Hour
Volume x 0.6 x AT x 0.018
Above Grade Building Design Heat Load 60,580 Btu / Hour
Airleakage + envelope heat loss
Building and Duct Heat Load 66,638 Btu / Hour
Ducts in unconditioned space: sum of buildina heat loss x 1.10
Ducts in conditioned space: sum of building heat loss x 1
Maximum Heat Equipment Output 83,297 Btu / Hour
Buildina and duct heat loss x 1.40 forforced airfumace
Buildina and duct heat loss x 1.25 for heat DumD
(07101113)