Overview• HVLS Fans?• Applications• Benefits• Energy Savings Heating & Cooling• New Build Savings• Specifications• Operation• Question

Altra-Air FansIntroduction

HVLS FansWhat does HVLS represent? HVLS=High Volume,Low Speed A lot of air movement at slow rpm Nearly 400,000 CFM at 57 RPM and only 1,5kw motor.

How is it different from other fans? Size (range from 2.4-7.3m in diameter) 0.75-1,5kw motors Unique Design & Engineering (air foil blades) Quiet (64dBa maximum) Controlled by a Vaiable Frequency Drive

Air Foil DesignWhalePower’s Tubercle™ Technology Derived from the Humpback whale Tubercles (or bumps) on the leading edge More efficient air handling

How does it work? Channels air between Tubercles This creates less drag Less drag=increased pitch Increased pitch=more air

Altra-Air FansApplications

ApplicationsLarge Open SpacesMore than 4m HeightLimited Wind InfluenceSolid StructureElectricity Available

ApplicationsWarehouseDistribution CentresGymnasiumAuditoriumsWorkshopsContinued…

ApplicationsBig Box StoresIndoor PoolsHangarsFactoriesDairiesMore…

Altra-Air FansHVLS Benefits

BenefitsReduced Energy ConsumptionImproved Air QualityDecreased Humidity LevelsEvenly Mixed Air EnvelopeIncreased Occupant Comfort & ProductivityMinimal Maintenance & Inexpensive

Operation

Altra-Air FansEnergy Savings

Cooling• Two types of Energy Savings1.Thermostat Change Basic Effective Temperature

2.Supplemental Cooling Free Cooling

Cooling• Basic Effective Temperature (BET)1.Thermostat ChangeIncreased temperature set pointDue to “wind-chill effect” from fansReduced structual heat gainReduced enthalpy drop of cooled air

Energy SavingsFree Cooling2. Supplemental CoolingCooling period before Air ConditioningA/C Units run less frequently

Reducing DuctworkHybrid HVLS/ Ductwork Specification

Reducing TonnageHVLS Fans Provide…Ventilation EffectivenessEvaporative CoolingCompresosor OptimizationLeading to… Reduced Capital Investment

Ventilation EffectivenessConsider Thermal Mass…Ground temperature naturally cools concreteAirflow across concrete increases

transmissionNatural cooling to the inside space now

occursThis leads to better ventilation effectiveness

Evaporative CoolingHVLS fans with AC Systems…Increase airflow on occupants of the

structureLeads to an increase in temperature set pointDecreasing energy requirementsCreating continual savings

Compressor OptimizationWith constant speed compressors…If a building has four AC units running at 50%Compressor efficiency is lowIf the same building utilizes HVLS FansOnly 2 units are required running at 100%Compressor efficiency is now maximized

Reduced Capital InvestmentsWe now require…Less AC unitsLess Duct WorkWhich…Offsets HVLS CostImproves efficiency

Altra-Air FansTotal Savings

Total Project SavingsInitial Savings Less Ductwork and AC Units Required More than Pays for Cost of HVLS FansContinued Savings Less Tonnage Required Decreased Usage Hours

Altra-Air FansSpecifications

SpecificationFan Size(m)

Power(w)

Speed(RPM)

Air Flow(CFM)

Coverage(m-diameter)

Sound(dBa)

7.3 1403 57 397,701 70.1 64

6.1 1403 63 330,050 61.0 63

4.9 805 73 182,173 42.7 62

3.7 644 123 134,152 24.3 62

2.4 644 154 42,136 10.7 60

Thank YouAny QuestionsWarehouse: Keruilai Far East (M) Sdn Bhd No.1,Persiaran Industri Lahat 6,Kawasan perindustrian Rima Lahat,1500 Lahat, Perak, MalaysiaTel: 605-321 8803 Fax: 605-322 0803

KL Office: Guan Seng Air Ventilation (M) Sdn Bhd (1053845-X)No.14, Jalan 6/37B, Taman Bukit Maluri,52100, Kepong, Kuala LumpurTel: 6012-921 8538

For More Information:www.gsav.com.myE-mail: sales@gsav.com.my