HomeMy WebLinkAboutHeating_System_Sizing_Worksheet_190628_V3Simple Heating System Size: Washington State
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Heating System Type:
To see detailed instructions for each section, place your cursor on the word "Instructions".
Design Temperature
Instructions Design Temperature Difference (∆T)46
∆T = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)2,694
Average Ceiling Height Conditioned Volume
Instructions Average Ceiling Height (ft)8.5 22,899
Glazing and Doors U-Factor X Area =UA
Instructions 0.280 544 152.32
Skylights U-Factor X Area =UA
Instructions 0.50 0 ---
Insulation
Attic U-Factor X Area =UA
Instructions 0.026 1,512 39.31
Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA
Instructions ---0 ________
Above Grade Walls (see Figure 1)U-Factor X Area UA
Instructions 0.056 2,762 154.67
Floors U-Factor X Area UA
Instructions 0.025 1,537 38.43
Below Grade Walls (see Figure 1)U-Factor X Area UA
Instructions No selection 0 ---
Slab Below Grade (see Figure 1)F-Factor X Length UA
Instructions 0.303 0 ---
Slab on Grade (see Figure 1)F-Factor X Length UA
Instructions ---0 ________
Location of Ducts
Instructions Duct Leakage Coefficient
1.10
Sum of UA 384.73
Envelope Heat Load 17,698 Btu / Hour
Sum of UA X ∆T
Air Leakage Heat Load 11,376 Btu / Hour
Volume X 0.6 X ∆T X .018
Building Design Heat Load 29,074 Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load 31,981 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 44,774 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
This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 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.
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.
Plan 2694 Rueppell, Inc.
(253) 297-8040
Above Grade
Below Grade
Figure 1.
All Other Systems Heat Pump
(07/01/13)
D08-053
B19001045
V3
REVISION
Received: 06/28/2019 / aalexander
BUILDING DIVISION
APPROVEDBUILDING DIVISION
THIS SET OF APPROVED PLANS MUST BE ON THE JOB AT ALLTIMES DURING CONSTRUCTION. THIS BUILDING IS NOT TO BEOCCUPIED UNTIL AFTER FINAL INSPECTION BY THE RENTONBUILDING DIVISION AND RECEIPT OF CERTIFICATE OFOCCUPANCY.
APPROVAL SHALL NOT BE CONSTRUED AS THE AUTHORITY TOVIOLATE OR CANCEL ANY PROVISIONS OF CODES, ORDINANCES,OR OTHER REGULATIONS ENFORCED BY THIS CITY.
DATE: 07/10/2019