Air Leakage Test Report

Transcription

1 Page 1 of 8 11/22/2014 Air Leakage Test Report In compliance with ASTM E INSERT COMPANY LOGO This Leaky House Building Address: 304 Groundhog College Rd, West Chester, PA Performed for: Performed by: Andrew McDowell Test date: Associated Test file: ASTM

2 Summary Lisuzzo Residence Page 2 of 8 11/22/2014 FanTestic Test date: version: By: Andrew McDowell Building address: 304 Groundhog College Rd, West Cheseter, PA Building and Test Information Test file name: ASTM Customer: Building volume: 23,610 cu ft Building Height (from ground to top): 18 ft Floor Area: 3,275 sq ft Envelope Area: 5,795 sq ft Building Elevation (of ground, above sea level): 400 ft Results CFM at 50 Pa: Leakage Area (EqLA)[sq in]: Air Changes per hour ACH50:.3 licensed to: This Leaky House Compliance

3 Assumptions and warnings While FanTestic software may calculate air leakage results based on user input, use of this software does not in any way guarantee these results. Page 3 of 8 11/22/2014

4 Building Information Lisuzzo Residence Page 4 of 8 11/22/2014 Building Measurements Building Volume [cu ft]: Envelope Area (A T) [sq ft]: 23,610 cu ft 5,795 sq ft (defined as the area of external walls plus the area of the roof and ground floor.) Net Floor Area (A f) [sq ft]: 3,275 sq ft Heating/Ventilation System HVAC Systems Present: Pictures Test Method All intentional openings were set to the operating condition expected during occupancy. Discussion of Results Leakage rate The measured air flow at a test pressure of 50 Pa was CFM which equates to an equivalent leakage area of square inches, based on adding up the leakage from all the holes and cracks in the exterior. This leakage also equates to a one inch gap, 0.9 feet long. Your home leaks as if there is one hole this size in the wall. Air leakage in your ducts to the outdoors was not measured in this test but can greatly increase the above loss rate and can also cause air quality problems. Repairing this type of duct leakage should be the first priority. Safety concerns Your home may already be suffering from air quality problems due to pollutant sources. A proper whole house diagnostic routine by a certified tester will go a long way to identifying solutions. Whenever changes are made to house and duct leakage, a thorough evaluation of the "house as a system" will optimize comfort, energy and air quality while ensuring a higher degree of safety and protecting the integrity of the structure of your home. Ventilation The air in your home will be replaced with outdoor air every 228 minutes on average. That is about.3 air changes each hour. This air change rate will provide each person with???? CFM of fresh air each hour which is sufficient. According to the ASHRAE standard 62.2, your home does not require any additional ventilation even when windows and doors are closed. Bringing in air from a clean outdoor location and removing stale indoor air from kitchens, bathrooms and other locations may still be important in order to improve air quality. If air sealing work is undertaken, the air leakage rate must be re-measured to determine ventilation requirements based on the new leakage rate.

5 Page 5 of 8 11/22/2014 Combined Test Data Results Uncertainty Air flow at STP, [CFM at 50] /-4.4% Air change rate at 50 Pa [/h] /-4.4% Flow per unit floor area at /-4.0% [CFM/sq ft] Flow per unit envelope area at /-4.0% [CFM/sq ft] Equivalent leakage area at 10 Pa /-7.3% [sq in] LBL Effective leakage area at 4 Pa /-13.0% [sq in] LEED Permeability at 4 Pa [sq in/ 100 sq ft] /-13.0% Air Leakage Test Data Appendix Lisuzzo Residence Depressurize Data Set Test Dataset Date and Time: :16 Environmental Conditions Wind speed: 0 from the Operator Location: Inside the building Initial Bias Pressure: 0.79 Pa Initial Temperature: indoors: 68.0 F outdoors: 45.0 F. Final Bias Pressure: 0.17 Pa Final Temperature: indoors: 68.0 F outdoors: 45.0 F. Test Analysis Results Uncertainty Height x Temperature difference: 414 ft F Air leakage coefficient, C p: /- 22.1% Exponent, n p: CFM/Paⁿ +/ % Correlation coefficient, r 2 : Air flow at STP, [CFM]: CFM at 50 Pa +/-4.4% Air change rate, ACH: air changes per hour at 50 Pa +/-4.4% Flow per unit floor area: CFM per sq ft +/-4.4% Flow per unit envelope area: CFM per sq ft +/-4.4%

6 Page 6 of 8 11/22/2014 Induced pressure [Pa] Fan #1, Range Mid Fan #1, Range Low Fan Pressure [Pa] Flow [CFM] Fan Pressure [Pa] Flow [CFM] Error [%] 2.7% -1.7% -2.8% -2.5% 3.0% 1.6% 6 induced pressures each taken for 10 of the required 10 seconds. 1 baseline pressures each taken for 30 of required 30 seconds. Static Pressure Averages: initial [Pa] P P P final [Pa] P P P Induced Pressure vs. Flow (Depressurize Set)

7 Building Gauge Pressure (Depressurize Set) Page 7 of 8 11/22/2014

8 Page 8 of 8 11/22/2014 Test Equipment The following test equipment was used in the performance of the air leakage tests. Fan Fan serial Fan calibration Gauge Gauge serial Gauge Calibration #1 Retrotec Model DM Fan Calibration Certificate Retrotec Model 200: Retrotec Model Range n K K1 K2 K3 K4 Open Mid Low Flow in CFM using the above calibration factors is calculated as follows: