agenda

PowerPoint Presentation

air quality made simple11AgendaMULTIFAMILY AND HOTEL VENTILATION STRATEGIESCentralizedContinuousDemand controlledMakeup AirBalanced SystemsCompartmentalizedContinuousDemand controlledMakeup AirBalanced Systemsair quality made simple

Energy Saving SolutionsPrecisely Regulate Exhaust and Supply Ventilation Decrease the load on heating and cooling systemsImprove Indoor Air QualityImprove comfort with automatically balanced systemsOccupancy Based Zoned Ventilation Exhaust and SupplyDemand Controlled External Input, or Timer/Switch, or Occupancy Sensor, or Humidity, or CO2 SensorEnergy Recovery SystemsFrom 50 to over 10,000 CFMALL of the major technologiesCustom solutions

Our proven approach to saving energy/money is to effectivelyRegulate, Zone, and Recover ventilation system airflow.

Multifamily and Hotel Ventilation Strategiesair quality made simple

CentralizedContinuousStack Effect Needs to be Addressed in Tall Buildings Reduced Airflow/Energy Savings Opportunity in Retrofit Buildings Make-up Air Can be Central or Local Recover Paid For EnergyRooftop Central Fansair quality made simple

Corrects Issue Caused By: Wind Duct Length Leakage Loading Design Flaws Occupants

CentralizedContinuousAutomatic Balancingair quality made simple

Keeps System Balanced and Regulated At All TimesEnables Focused Exhaust Boost During OccupancyAllows For Smaller HRV Units/FansReplaces Spot Bathroom FansQuiet, Powerful, and SilentOnly One Exhaust Penetration

ZRT - Pressure Independent VAVZone Register Terminals0-30 CFM30-400 CFMExhaust & SupplyCentralizedDemand Controlledair quality made simple

CentralizedDemand Controlledair quality made simpleVentilation Systems provide two functionsRemove unwanted pollutantsBring in outside airAssumes outside air is less polluted than indoor air.Distribute air to people

Makeup Air SolutionsCentralizedMakeup Air Solutionsair quality made simple8Makeup air systems are designed to replace the amount air extracted from the building with fresh air directly from outdoors. NYC Code 2008: IMC 2003larger of 0.35 ACH or 15 CFM per person, occupancy = # BR +1.

Makeup Air Solutions ASHRAE 62 Table 6-1 specifies the outdoor air rate per person. People: 5 cfm/p, plus Area rate = 0.06 cfm/sq.ft. Occupancy = no. bedrooms +1CentralizedMakeup Air Solutionsair quality made simple9

80% - 90% of Apt. envelope adjacent to other unitsGood air tightness level ~ 30 in2 of leakage area in a small apartment how much to the outside and how much to other units? (not an exhaust restriction!). Balanced exhaust helps, but doesnt solve problemHigher Leakage between units than from outdoorsRequires continuous exhaustnot intermittent

~ 7 in2 around AC sleeveCentralizedMakeup Air Solutionsair quality made simple10Continuous vs. Intermittent Ventilation with inter-apartment leakageWith leakage areas ~30 sq. in. for demising walls and floors, and leakage or intentional inlet areas to exterior approx 5 sq.in. eachintermittently operating exhaust draws more air from neighbors than from outdoors.Unless leakage areas can be reduced to levels approx same as outdoor leakage areas, continuous exhaust is required to reduce the airflows between living units.CentralizedMakeup Air Solutionsair quality made simple11Energy Efficient Construction requires engineered makeup air solutions for central exhaust ventilation systems.Several methods are allowable.

Ventilating High-Rise Residential Buildings Makeup Air SolutionsCentralizedMakeup Air Solutionsair quality made simple12

Makeup Air for exhaust ventilation systems traditionally supply common corridors.Corridor fire barrier construction may now make this difficult.Makeup Air SolutionsCentralizedMakeup Air Solutionsair quality made simple13The new mechanical code now specifically prohibits the use of the common corridors as supply air ducts for the living units. No more under cut apartment entrance doors.Central Makeup Air Unit

Ventilating High-Rise Residential Buildings Makeup Air Solutions

CentralizedMakeup Air Solutionsair quality made simple14Central Energy Recovery Unit

Ventilating High-Rise Residential Buildings Makeup Air SolutionsCentralizedMakeup Air Solutions

air quality made simple15

If forced air heating is available, the FCU or AHU can provide outside makeup air through a fresh air intake into the return duct.

Makeup Air Solutions

CompartmentalizedMakeup Airair quality made simple16

Central makeup air ducted to each apartment is becoming more popular.Use dynamic flow controls to ensure proper balance here as well.

Makeup Air SolutionsCentralizedMakeup Air Solutionsair quality made simple17Makeup Air through Fan Assisted Blending Ventilators

CentralizedMakeup Air Solutionsair quality made simple18An example of a unitized ventilation system, for direct outdoor air, filtered and blend tempered with internal distribution to all living areas, including bedrooms.

What is a Trickle Vent (Airlet)?An engineered opening in the building envelope from outside to living spaces.Provide a means for directing the fresh air pathway into living spaces when continuous exhaust fans are used.

Makeup Air Solutions Air Inlets - AirletTMCentralizedMakeup Air Solutionsair quality made simple19Why do you need Airlets?Air quality in non-exhausted rooms depends on ventilation air distribution.

Large leakageOccupation de nuitSmall leakageCentralizedMakeup Air Solutionsair quality made simple20Inlets provide a metered amount of air to specific rooms, meeting the requirements for distribution. These two slides illustrate inlets that respond to human presence based on humidity differences between rooms. Part of a demand controlled ventilation methodology, that provides the required airflow when needed but reduces ventilation during periods of low occupancy. The rates are modulated, not on/off.Provides controlled leakageOccupation de nuitCentralizedMakeup Air Solutionsair quality made simple21Why do you need Airlets?ASHRAE 62 states, Air from one residential dwelling shall not be recirculated or transferred to any other space outside of that dwelling.Difficult to prevent, but easy to minimize.

Note: the exhaust rate determines the ventilation rate, the inlet provides a dedicated means of fresh air distributionbut Airlet airflow is determined by resulting pressure differential and Airlets net free area.

CentralizedMakeup Air Solutionsair quality made simple22Why do you need Airlets?Help minimize cross-contamination from inter-zonal leakage

NEIGHBORS APARTMENTOccupation de nuitSmall leakageCentralizedMakeup Air Solutionsair quality made simple23This slide shows a large leak from a neighbors apartment.Where should they be applied?Continuous exhaust ventilation systemsRadiant baseboard or floor heated spacesEnergy efficient weatherized buildingsGeneral rule Buildings 12 stories or less (unless great care in compartmentalization has taken place).CentralizedMakeup Air Solutionsair quality made simple24Where should they NOT be applied?Forced-air heating (unless supply and return airflows are well balanced)Buildings over 12 stories with significant vertical leakage between floors (not compartmentalized)Outside air is considered unhealthyCentralizedMakeup Air Solutionsair quality made simple25How do they work?In the presence of negative pressure, fresh air is directed into into living spaces at the most beneficial location (at/above windows & near ceiling).Draft prevention

CentralizedMakeup Air Solutionsair quality made simple26How do they work? Cold air pattern:

Air pattern: OA -4 Deg F.-- IA, 66 Deg.F. CentralizedMakeup Air Solutionsair quality made simple27What is the difference between an Airlet and a leak?Better at low pressure and high pressure

CentralizedMakeup Air Solutionsair quality made simple28At low pressure

Airflow CFMCentralizedMakeup Air Solutionsair quality made simple29

At HIGH pressure

Airflow CFMWind Speed MPHCentralizedMakeup Air Solutionsair quality made simple30Window Air InletsArchitecturally pleasing.Participation with the glazing contractors typically required.Air Inlets

CentralizedMakeup Air Solutionsair quality made simple31The following slides illustrate some of the variety of products applied to windows, or through wall installations.

Window Air Inlets - Available in many configurations depending on window type, and sound criteria.CentralizedMakeup Air Solutionsair quality made simple32

Self Balancing, Humidity, and Manual Control available in through-window models.

CentralizedMakeup Air Solutionsair quality made simple33How do they install?

Carrier BarCentralizedMakeup Air Solutionsair quality made simple34When using inlets in window assemblies, there may be problems with the certification of the windows for weather intrusion tests and leakage. Several window manufacturers are located in NYC that have had some experience in manufacturing windows with inlets. In particular, they have used the bar carrier to work around some of these issues.

Through the wall typeFlexible installationRound or rectangularFiltration generally included

CentralizedMakeup Air Solutionsair quality made simple35

Self regulating.


CentralizedMakeup Air Solutionsair quality made simple37Manual regulation

CentralizedMakeup Air Solutionsair quality made simple38Temperature regulating


Humidity regulatingused in demand controlled ventilation

Humidity Regulating Air InletsCentralizedMakeup Air Solutionsair quality made simple40

Installation in window framing, above windows, in shade pockets, or acoustic ducts. CentralizedMakeup Air Solutionsair quality made simple41How much do they cost?~ $30-$100 per


From 50 CFM to 10,000+ CFMHRVs and ERVsThe NanoCentralizedBalanced Systemsair quality made simpleHRV or ERV?

HRV Transfers sensible heat energy from warm air to cold air. Not recommended for warm humid climates.

ERV Transfers heat sensible energy from warm air to cold air, and it transfers latent (moisture) energy from moist air to dry air. Not recommended for extreme cold climates.

Right Product Right Application Right Climate

One Size does not fit all

CentralizedBalanced Systemsair quality made simpleWhy are multiple technologies necessary?

Paper ERV Core Latent and sensible energy recovery Shown after 50 freeze thaw cycles Can not get wet Airflows cross contaminate, especially polar compounds that attach to water.

Polymer Membrane ERV Core Water washable Zero cross contamination High latent and sensible energy recovery Robust membrane Microban anti-mold/fungus coatingCentralizedBalanced Systemsair quality made simpleWhy are multiple technologies necessary?

Metal HRV Core Rugged heavy duty construction Easy to maintain and clean, hose it down Zero cross contamination Only transfers heat sensible energyEnthalpy Desiccant Wheel High latent and sensible energy recovery Higher cost and maintenance Higher cross contamination rate

CentralizedBalanced Systemsair quality made simple

Energy Recovery Technology ComparisonsCentralizedBalanced Systemsair quality made simpleHeat/Energy Recovery Ventilation SystemsHRVsensible only heat recovery, dwellings without much need of Air conditioning, or climate zones with moderate summers and low humidity. Require condensate drains. 60-80%+ Savings winter.ERVtotal energy(enthalpy) exchangewarm humid summers. 50-80%+ Savings year round.BothHousing design for installation in ambient conditions. Protection against condensation within cabinet.CentralizedBalanced Systemsair quality made simple48Floor by Floor Main ducts in hallways to HRV/ERV (1 or more floors per HRV/ERV. CARs to balance airflows

HRV/ERVBlueSupplyRed--ExhaustCentralizedBalanced Systemsair quality made simple49This is an interesting variation Floor by floor ducting scheme with horizontal duct running through the ceiling plenum of the corridors, for both supply and exhaust, connecting to an HRV/ERV in a mechanical room at the end of the hallway, or to vertical risers to roof or basement supply fans. Airflow balancing by constant devices can be controlled on each branch duct into each apartment or at each individual grille within each apartment.CompartmentalizedContinuous

BalancedEnergy Recovery UnitCeiling mounted in a closet or utility room (less than 9 high) provides both exhaust (bathrooms/kitchen) and supply ventilation.Spot Fan + AirletContinuous duty spot fan for bath/kitchen exhaust with makeup air into living areas via airlets.+

air quality made simpleCompartmentalizedDemand Controlled

Balanced with Occupancy BoostEnergy Recovery UnitCeiling mounted in a closet or utility room (less than 9 high) provides continuous low volume to meet code, plus boosted exhaust (bathrooms/kitchen) and supply ventilation on demand/during occupancy..+

air quality made simple

If forced air heating is available, the FCU or AHU can provide outside makeup air through a fresh air intake into the return duct.

Makeup Air Solutions

CompartmentalizedMakeup Airair quality made simple52Compartmentalized HRV/ERV systemsCompact HRV/ERVs available. Supply/exhaust ducts to exteriordirect to outdoors, or to supply and exhaust risers to roof top fans, maintaining minimum positive and negative pressurization of riser ducts.Fire dampers required, cannot use up-turn subducts on supply.Balancing of total supply and exhaust airflows, as well as ducts within apartment (bathrooms, bedrooms, etc.)CompartmentalizedBalanced Systemsair quality made simple53Compact HRV/ERVs (one per Apartment)Compact HRV/ERV can be installed against wall or overhead against ceiling, 120 cfm unit for apartments up to 2400 sq.ft. and two or three exhaust points

CompartmentalizedBalanced Systemsair quality made simple54

QUESTIONS?air quality made simple5555Chart10003.03143313348.944.92457765345.656854249512.65496.54083014546.928203230317.6588819.835829.35248447828.9442719121.3661810.62560991959.797958971121.778211.836317903810.583005244312.996038341711.31370849914.11294827031215.193155858612.649110640716.241377943213.266499161417.261354239813.856406460618.256114027314.422205101919.228155162814.966629547120.179568450115.491933384821.11212657241622.027349265816.492422502522.926552104416.970562748523.810883696317.435595774224.681354508817.8885438225.53885952918.330302779826.38419630918.761663039327.218079501419.183326093328.041152691319.595917942328.853998118120

Pref = 4 PaBuilding Leakage "n" = 0.7Fixed inlet "n" = 0.5AIRLET 200Building Leaks exp "n" = 0.7Fixed InletAIRLET 200Pressure (Pa)Fresh Air Inlets vs Building Leakageat Low Pressures

Sheet1nCA bl0.7CA inletELA:3.0340.5Airlet 200 --Use Hokkaido data insteadBuilding Pressure (Pa)CFMPASCALSIN.W.G.00000.00013.031433133432.490.0124.92457765345.656854249563.980.01636.54083014546.928203230365.230.02148875.730.02359.35248447828.944271917.56.470.026610.62560991959.797958971188.220.033711.836317903810.583005244310.511.450.046812.996038341711.31370849910.512.450.05914.1129482703121113.700.0551015.193155858612.64911064071214.940.061116.241377943213.26649916141317.680.0711217.261354239813.85640646061420.920.0841318.256114027314.42220510191524.900.11419.228155162814.96662954711730.380.1221520.179568450115.49193338481835.610.1431621.1121265724161940.090.1611722.027349265816.49242250252046.070.1851822.926552104416.97056274852051.050.2051923.810883696317.43559577421571.460.2872024.681354508817.8885438215.576.690.3082125.53885952918.33030277981685.910.3452226.38419630918.76166303931797.360.3912327.218079501419.183326093317105.830.4252428.041152691319.595917942318.5117.030.472528.85399811812018124.500.52629.657144733720.39607805442730.451074932720.78460969082831.23623021721.16601048852932.013015993221.54065922853032.781805662121.90890230023133.542944124222.27105745133234.296750801222.6274169983335.043522252622.97825058623435.783534453123.32380757943536.517044782823.66431913243637.244293774243737.965506649424.33105012123838.680894683424.65765601193939.390656408524.97999199364040.094978690225.29822128134140.794037686225.6124969497Wind pressure vs mph:4241.487999705425.92296279364342.177021979126.2297540972v (mph)v (fpm)VP in. w.gVP Pa4442.861253355926.53299832285.757172963506.60.0160021692444543.540834927926.8328157310880.00.048279226512104644.215900598427.1293199325201760.00.19311690648204744.886577595627.4226184016302640.00.4345130385109304845.552986940127.7128129211403520.00.7724676241934946.215243870628504400.01.20698066243025046.873458231828.2842712475605280.01.73805215394355147.527734830128.56571371425248.17817375828.8444102037322832.00.49999993281255348.82487069329.12043955715449.467917171429.3938769134AIRLET 200 (TEST5550.10740084129.6647939484BY HOKKAIDO UNIV)5650.743405693829.9332590942Pam3hcfmPacfm5751.376012280630.199337741100000.005852.005297910130.4630924235513.88.12.58.945952.631336832930.7245829915914.98.8512.656053.254200411830.98386676971318.210.71017.666153.873957280731.24099870362224.414.41519.846254.490673491431.4960314963230.117.72021.376355.104412651431.74901573284032.419.12521.786455.71523605132613118.26556.323202782732.249030993210031.718.658626656.928369852832.4961536185124.530.58186757.530792285332.74141108756858.130523219232.98484500496958.727614000133.22649545177059.322114265433.46640106147159.914072025133.70459909277260.50353373733.9411254977361.090544377734.17601498137461.675147509734.40930106827562.25738534434.64101615147662.837298799534.87119154837763.414927559435.09985754967863.990310123635.32704346537964.563483858835.55277766938065.134485045935.777087648165.7033489245368266.270109735336.22154055258366.834800760536.44173431668467.397454361436.66060555968567.958102014836.87817782928668.516774347437.0944739828769.073501167837.30951621248869.628311498337.52332607868970.181233603537.73592452829070.732295019137.9473319229171.281522578138.15756805679271.828942436338.36665218659372.374580096738.5746030449472.918460432638.78143885939573.460607709538.98717737929674.001045606639.19183588459774.539797236439.39543120729875.076885164139.59797974649975.612331426439.799497484310076.14615754864010176.678384561740.199502484510277.209033018340.398019753410377.738123008440.595566260410478.265674174140.792156108710578.791705723440.987803063810679.316236444341.182520563910779.839284717941.376321731210880.360868530441.569219381710980.881005485741.761226035611081.399712816641.952353926811181.917007396142.142615011411282.432905748142.33202097711382.947424057542.520583250911483.460578180242.708313008111583.972383652842.895221179111684.482855701443.081318457111784.992009250643.266615305611885.499858931943.451121964811986.006419092143.634848458512086.51170380143.817804600412187.01572685914412287.518501804844.181444068712388.020041921644.362146025612488.52036024544.542114902612589.019469568844.72135955

Sheet100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

AIRLET 200 w/FilterFixed inletBuilding Leakage10 MPH20 MPH30 MPHPref = 4 PaBuilding Leaks: exp "n" = 0.7Inlet: exp. "n" = 0.5Wind PressureAirlet 200 w/filterPressure (Pa)Airflow (CFM)Pressure (Pa)Wind Speed (MPH)Inlets vs Building Leakageat High Wind Pressures

Sheet200000000000000000000000000000000000000000000000000000000000

Pref = 4 PaBuilding Leakage "n" = 0.7Fixed inlet "n" = 0.5AIRLET 200Building Leaks exp "n" = 0.7Fixed InletAIRLET 200Pressure (Pa)Airflow (CFM)Fresh Air Inlets vs Building Leakageat Low Pressures

Sheet3

Chart200403.0314331334108.122684.92457765345.6568542495208.770146.54083014546.92820323033010.712528814.361849.35248447828.9442719117.7168610.62560991959.797958971119.0706411.836317903810.583005244318.246612.996038341711.31370849918.6586214.1129482703121815.193155858612.649110640716.241377943213.266499161417.261354239813.856406460618.256114027314.422205101919.228155162814.966629547120.179568450115.491933384821.11212657241622.027349265816.492422502522.926552104416.970562748523.810883696317.435595774224.681354508817.8885438225.53885952918.330302779826.38419630918.761663039327.218079501419.183326093328.041152691319.595917942328.85399811812029.657144733720.396078054430.451074932720.784609690831.23623021721.166010488532.013015993221.540659228532.781805662121.908902300233.542944124222.271057451334.296750801222.62741699835.043522252622.978250586235.783534453123.323807579436.517044782823.664319132437.2442937742437.965506649424.331050121238.680894683424.657656011939.390656408524.979991993640.094978690225.298221281340.794037686225.612496949741.487999705425.922962793642.177021979126.229754097242.861253355926.532998322843.540834927926.8328157344.215900598427.129319932544.886577595627.422618401645.552986940127.712812921146.21524387062846.873458231828.284271247547.527734830128.565713714248.17817375828.844410203748.82487069329.120439557149.467917171429.393876913450.10740084129.664793948450.743405693829.933259094251.376012280630.199337741152.005297910130.463092423552.631336832930.724582991553.254200411830.983866769753.873957280731.240998703654.490673491431.49603149655.104412651431.749015732855.7152360513256.323202782732.249030993256.928369852832.496153618557.530792285332.741411087558.130523219232.984845004958.727614000133.226495451759.322114265433.466401061459.914072025133.704599092760.50353373733.94112549761.090544377734.176014981361.675147509734.409301068262.25738534434.641016151462.837298799534.871191548363.414927559435.099857549663.990310123635.327043465364.563483858835.552777669365.134485045935.7770876465.70334892453666.270109735336.221540552566.834800760536.441734316667.397454361436.660605559667.958102014836.878177829268.516774347437.09447398269.073501167837.309516212469.628311498337.523326078670.181233603537.735924528270.732295019137.94733192271.281522578138.157568056771.828942436338.366652186572.374580096738.57460304472.918460432638.781438859373.460607709538.987177379274.001045606639.191835884574.539797236439.395431207275.076885164139.597979746475.612331426439.799497484376.14615754864076.678384561740.199502484577.209033018340.398019753477.738123008440.595566260478.265674174140.792156108778.791705723440.987803063879.316236444341.182520563979.839284717941.376321731280.360868530441.569219381780.881005485741.761226035681.399712816641.952353926881.917007396142.142615011482.432905748142.33202097782.947424057542.520583250983.460578180242.708313008183.972383652842.895221179184.482855701443.081318457184.992009250643.266615305685.499858931943.451121964886.006419092143.634848458586.51170380143.817804600487.01572685914487.518501804844.181444068788.020041921644.362146025688.52036024544.542114902689.019469568844.72135955

AIRLET 200 w/FilterFixed inletBuilding Leakage10 MPH20 MPH30 MPHPref = 4 PaBuilding Leaks: exp "n" = 0.7Inlet: exp. "n" = 0.5Wind PressureAirlet 200 w/filterPressure (Pa)Pressure (Pa)Inlets vs Building Leakageat High Wind Pressures

Sheet1nCA bl0.7CA inletELA:3.0340.5Airlet 200 --Use Hokkaido data insteadBuilding Pressure (Pa)CFMPASCALSIN.W.G.00000.00013.031433133432.490.0124.92457765345.656854249563.980.01636.54083014546.928203230365.230.02148875.730.02359.35248447828.944271917.56.470.026610.62560991959.797958971188.220.033711.836317903810.583005244310.511.450.046812.996038341711.31370849910.512.450.05914.1129482703121113.700.0551015.193155858612.64911064071214.940.061116.241377943213.26649916141317.680.0711217.261354239813.85640646061420.920.0841318.256114027314.42220510191524.900.11419.228155162814.96662954711730.380.1221520.179568450115.49193338481835.610.1431621.1121265724161940.090.1611722.027349265816.49242250252046.070.1851822.926552104416.97056274852051.050.2051923.810883696317.43559577421571.460.2872024.681354508817.8885438215.576.690.3082125.53885952918.33030277981685.910.3452226.38419630918.76166303931797.360.3912327.218079501419.183326093317105.830.4252428.041152691319.595917942318.5117.030.472528.85399811812018124.500.52629.657144733720.39607805442730.451074932720.78460969082831.23623021721.16601048852932.013015993221.54065922853032.781805662121.90890230023133.542944124222.27105745133234.296750801222.6274169983335.043522252622.97825058623435.783534453123.32380757943536.517044782823.66431913243637.244293774243737.965506649424.33105012123838.680894683424.65765601193939.390656408524.97999199364040.094978690225.29822128134140.794037686225.6124969497Wind pressure vs mph:4241.487999705425.92296279364342.177021979126.2297540972v (mph)v (fpm)VP in. w.gVP Pa4442.861253355926.53299832285.757172963506.60.0160021692444543.540834927926.8328157310880.00.048279226512104644.215900598427.1293199325201760.00.19311690648204744.886577595627.4226184016302640.00.4345130385109304845.552986940127.7128129211403520.00.7724676241934946.215243870628504400.01.20698066243025046.873458231828.2842712475605280.01.73805215394355147.527734830128.56571371425248.17817375828.8444102037322832.00.49999993281255348.82487069329.12043955715449.467917171429.3938769134AIRLET 200 (TEST5550.10740084129.6647939484BY HOKKAIDO UNIV)5650.743405693829.9332590942Pam3hcfmPacfm5751.376012280630.199337741100000.005852.005297910130.4630924235513.88.12.58.945952.631336832930.7245829915914.98.8512.656053.254200411830.98386676971318.210.71017.666153.873957280731.24099870362224.414.41519.846254.490673491431.4960314963230.117.72021.376355.104412651431.74901573284032.419.12521.786455.71523605132613118.26556.323202782732.249030993210031.718.658626656.928369852832.4961536185124.530.58186757.530792285332.74141108756858.130523219232.98484500496958.727614000133.22649545177059.322114265433.46640106147159.914072025133.70459909277260.50353373733.9411254977361.090544377734.17601498137461.675147509734.40930106827562.25738534434.64101615147662.837298799534.87119154837763.414927559435.09985754967863.990310123635.32704346537964.563483858835.55277766938065.134485045935.777087648165.7033489245368266.270109735336.22154055258366.834800760536.44173431668467.397454361436.66060555968567.958102014836.87817782928668.516774347437.0944739828769.073501167837.30951621248869.628311498337.52332607868970.181233603537.73592452829070.732295019137.9473319229171.281522578138.15756805679271.828942436338.36665218659372.374580096738.5746030449472.918460432638.78143885939573.460607709538.98717737929674.001045606639.19183588459774.539797236439.39543120729875.076885164139.59797974649975.612331426439.799497484310076.14615754864010176.678384561740.199502484510277.209033018340.398019753410377.738123008440.595566260410478.265674174140.792156108710578.791705723440.987803063810679.316236444341.182520563910779.839284717941.376321731210880.360868530441.569219381710980.881005485741.761226035611081.399712816641.952353926811181.917007396142.142615011411282.432905748142.33202097711382.947424057542.520583250911483.460578180242.708313008111583.972383652842.895221179111684.482855701443.081318457111784.992009250643.266615305611885.499858931943.451121964811986.006419092143.634848458512086.51170380143.817804600412187.01572685914412287.518501804844.181444068712388.020041921644.362146025612488.52036024544.542114902612589.019469568844.72135955

Sheet100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

AIRLET 200 w/FilterFixed inletBuilding Leakage10 MPH20 MPH30 MPHPref = 4 PaBuilding Leaks: exp "n" = 0.7Inlet: exp. "n" = 0.5Wind PressureAirlet 200 w/filterPressure (Pa)Airflow (CFM)Pressure (Pa)Wind Speed (MPH)Inlets vs Building Leakageat High Wind Pressures

Sheet200000000000000000000000000000000000000000000000000000000000

Pref = 4 PaBuilding Leakage "n" = 0.7Fixed inlet "n" = 0.5AIRLET 200Building Leaks exp "n" = 0.7Fixed InletAIRLET 200Pressure (Pa)Airflow (CFM)Fresh Air Inlets vs Building Leakageat Low Pressures

Sheet3

agenda

Documents