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Presentation transcript:

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National Building Code Requirements - Canada 2010 (NBC) Energy savings through DAL358 and DAL 359 National Building Code Requirements - Canada 2010 (NBC) Section 6.2.2.1. Required Ventilation 2) Except in storage garages and repair garages covered by Article 6.2.2.3., the rates at which outdoor air is supplied in buildings by ventilation systems shall be not less than the rates required by ANSI/ASHRAE 62.1, “Ventilation for Acceptable Indoor Air Quality”.

ASHRAE 62.1 – outdoor airflow calculations Energy savings through DAL358 and DAL 359 3 ASHRAE 62.1 – outdoor airflow calculations Standard ANSI/ASHRAE 62.1-2016 recommends a quantity of outdoor airflow calculated based on the number of occupants and the surface area using the values in table 6.2.2.1. In order to determine the total outdoor airflow, you must : 1. Calculate the quantity of outdoor airflow as follows :   Vbz = Rp · Pz + Ra · Az where Rp : outdoor airflow rate per person Pz : zone population Ra : outdoor airflow rate per unit area Az : zone floor area 2. Select the zone air distribution effectiveness Ez, Table 6.2.2.2 or according to ASHRAE 129 test (Measuring Air-Change Effectiveness) 3. Calculate the total outdoor airflow: Voz = Vbz / Ez

Energy savings through DAL358 and DAL 359 4 ASHRAE 62.1 – Calculate outdoor airflow

DAL 358 and DAL 359 diffuser tests with ASHRAE 129 Energy savings through DAL358 and DAL 359 DAL 358 and DAL 359 diffuser tests with ASHRAE 129

Energy savings through DAL358 and DAL 359 Typical Configuration Testing Conditions Typical Configuration

Testing Conditions : layout zone Energy savings through DAL358 and DAL 359 Testing Conditions : layout zone

Testing Conditions : diffusers location Energy savings through DAL358 and DAL 359 Testing Conditions : diffusers location 2 diffusers Peripheral zone 2 diffusers Central zone

Testing Conditions HVAC System Energy savings through DAL358 and DAL 359 Testing Conditions HVAC System

Testing Conditions : Automated tracer gas system Energy savings through DAL358 and DAL 359 Testing Conditions : Automated tracer gas system The NRC is the only laboratory in Canada that is equiped with a tracer gas system

Testing Conditions : data instruments Energy savings through DAL358 and DAL 359 Testing Conditions : data instruments

Testing Conditions : location of instruments Energy savings through DAL358 and DAL 359 Testing Conditions : location of instruments

Energy savings through DAL358 and DAL 359 Testing diffusers

Example of testing results Energy savings through DAL358 and DAL 359 Example of testing results

Energy savings through DAL358 and DAL 359 Test results

Energy savings through DAL358 and DAL 359 Final results

Energy savings through DAL358 and DAL 359 Conclusion ² ² ²

Example of application 1 Place Ville-Marie, Montreal Energy savings through DAL358 and DAL 359 18 Example of application 1 Place Ville-Marie, Montreal Number of levels 43 Area per level 36 000 ft. Ca. Total area 1 548 000 ft. Ca. Zone population 12 600 Vbz = Rp · Pz + Ra · Az = 5 cfm /pers x 12 600 pers.+ 0,06 cfm/ft² x 1 548 000 ft² = 155 880 cfm

Example of application 1 Place Ville-Marie, Montreal Energy savings through DAL358 and DAL 359 19 Example of application 1 Place Ville-Marie, Montreal Vbz = 155 880 cfm Voz = Vbz / Ez High induction diffuser DAL358 Ez (Air distribution effectiveness) 0,8 1,1 Voz (Zone outdoor airflow) 192 150 cfm 139 745 cfm Heating / Cooling costs $2,8 / cfm Humidifying costs $2,4 / cfm Dehumidifying costs $0,8 / cfm Annual cost (6$ x Voz ) $1 152 900 $838 470 Energy savings (%) - 27% Savings ($) / year $314 430 Savings ($) / 5 years $1 572 150 Conventional diffusers

Annual savings with the DAL 358 according to ASHRAE 62.1 Energy savings through DAL358 and DAL 359 Annual savings with the DAL 358 according to ASHRAE 62.1 Simulation Occupyrcy Category Size (≈120 ft2 /pers) cfm/pers. cfm/ft2 Standard diffuser Ez=0.8 Costs ≈ 30$ Diffuser DAL 358 Ez=1.1 Costs ≈ DN 600 : 219$ DN 500 : 164$ Savings generated/year/diffuser Payback NAD Office (2 persons) 15x16 240 ft2 5 cfm/pers= 10 cfm 0.06 240x0.06= 14.4 cfm 24.4 cfm ÷ 0.8 = 30.5 cfm O/A ÷ 1.1 = 22.2 cfm O/A 8.3 cfm x *6$ = Savings of 50$/diffuseur 219$ ÷ 50$ = 4.4 years Pharmacy (20 persons) 100 x 100 10 000 ft2 100 cfm 0.18 10000x0.18= 1 800 cfm 1 900 cfm 2 375 cfm O/A 1 727 cfm O/A 648.6 cfm x *6$ = Savings of 3 888$/yr DAL358 DN 600=400 cfm 219$ ÷ 155.5$ = 1.4 years 10 000ft2÷400 cfm= 25 3 888 $/yr÷25 diffusers= 155.52$ / diffusers Librairy Université Sherbrooke Faculté de Droit (88 persons) 34 000 ft2 1 pers/400 ft2 = 88 pers. 0.12 34000x0.12= 4 080 cfm 4 520 cfm 5 650 cfm O/A 4 109 cfm O/A 1 541 cfm x *6$ = Savings of 9 246$/yr DAL358 DN 500=280 cfm 164$ ÷ 76$ = 2.2 years 440 cfm 34 000 ft2÷280 cfm= 121 9 246$/yr÷121 diffusers= 76 $ / diffusers Store Ex : Bouclair 6 000 ft2 7.5 cfm/pers= 150 cfm 6 000x0.12= 720 cfm 870 cfm 1 087.5 cfm O/A 790.9 cfm O/A 296.6 cfm x *6$ = Savings of 1 779.6$/yr ÷ 118.6$ = 1.8 years 6 000 ft2÷400 cfm= 15 1779.6$/yr÷15 diffusers= 118.6 $ / diffusers Nail salon (10 persons) 2 000 ft2 20 cfm/pers= 200 cfm 2 000x0.12= 240 cfm 550 cfm O/A 400 cfm O/A 150 cfm x *6$ = Savings of 900$/yr ÷ 128.6$ =1.3 years 2 000 ft2÷280 cfm= 7 900$/yr÷7 diffusers= 128.6 $ / diffusers Pet shop 5 000 ft2 75 cfm 5 000x0.12= 600 cfm 675 cfm 843.7 cfm O/A 613.7 cfm O/A 230 cfm x *6$ = Savings of 1 380$/yr ÷ 76.7$ = 2.1 years 5 000 ft2÷280 cfm= 18 1 380$/yr÷18 diffusers= 76.7 $ / diffusers Gym Ex : Complexe Thibault (40’x100’) 4 000 ft2 20 cfm/pers   = 400 cfm 4 000x0.06= 640 cfm 800 cfm O/A 582 cfm O/A 218 cfm x *6$ = Savings of 1 308$/yr ÷ 131$ =