giới thiệu về Altivar 21 và Altivar 61

Altivar 21 & Altivar 61 HVAC Applications & Energy Saving Presenter: Nguyen Huu Loi Summary I Introduction II The applications III Air conditioning system IV HVAC equipment overview V Technical Demonstration VI Conclusion I Introduction II The applications III Air conditioning system IV HVAC equipment overview V Technical Demonstration VI Conclusion I Introduction Statement Cutting Energy Costs 50% of all energy used in a typical building is for HVAC operation (Fans and pumps motors) Fan speed can be adjusted to vary the quantity of ventilation air to spaces with changing occupancies A hudge potential to save energy Enormous opportunities 20% drop in speed of centrifugal pumps and fans can save as much as 50% in energy Today many buildings still use traditional mechanical devices to control system flow (inefficient throttling devices such as vanes or valves) About 25% of the motors used in HVAC existing applications are controlled by a AC drive Electricity consumption For the processes and the building utilities 72 % of consumed electricity are used to turn motors 63 % of this energy is used for the fluids applications Compression 30 % Pumping 20 % Process 37 % Ventilation 13 % I Introduction I Introduction Pumping Ventilation Compression Benefits from use of the Altivar : a just necessary electric consumption enhanced performance more comfortable utilisation Today only 5% of the installations are equipped with variable speed drives A conventional installation Motor supply : direct on line Motor speed = nominal speed Flow variation is obtained by device of restriction or pressure loss - valve, inclinor The flow reduction makes fall very little the absorptive power Example of a Fan : flow regulation by an outlet valve at 80% of nominal flow, the power consumption is 95% of nominal power I Introduction I Introduction Definitions Heating : HVAC ? to maintain a closed area to a certain temperature with a cool external atmosphere Ventilation : High Voltage AC drives ? alone or combined with a heating system or air-conditioner system, control both air supply and emptying into closed area This eliminate smell and provide enough oxygen to the occupants Air-conditioner : control inside environment of a space, that is to say temperature, humidity, air flow (and it ’s purety) for the occupants and materials I Introduction Why Air Conditioning ? Air-conditioning accounts for around half of the energy use of a normal office building Need to provide fresh air Maintain temperature within a comfortable range Typically, temperatures are maintained within a few degrees of 22°C This corresponds with what is generally accepted to be a comfortable temperature, although the reality is that it ’s practically impossible to keep everyone happy all the time I Introduction Heating and cooling VSD Heating and cooling solutions : Water stage Air stage VSD VSD Water stage : VSD water is the most efficient and inexpensive medium that we can cool directly (through a chiller) or heat (through a boiler) Air stage : VSD VSD air is the medium for heat exchange in the building, can be cooled or heated through coils IV HVAC equipment overview Boilers A boiler burns fuel or gas to produce heat This heat is absorbed by water, which flows through tubes inside the boiler Dual Fuel Boiler Gas boilers are the most common type in office buildings The boilers producing hot water (70 to 85°C) : provide a heat source for the air-conditioning system may also serve domestic hot water system (normally separate) Gas Boiler I II Introduction The applications III Air conditioning system IV HVAC equipement overwiew V Technical Demonstration Vi Conclusion V Technical Demonstration Outlet Valve Inlet (Suction) Suction) Valve V Technical Demonstration The fan power curve Powers 100 % 90 % 80 % Outlet valve 70 % 60 % 50 % Suction valve 40 % 30 % Drive 20 % 10 % 0% 10 20 30 40 50 70 80 90 100 Flow The fan power curve Entraînement vitesse fixeDemonstration V Technical Variation in flow obtained by a load loss system Powers 100 % 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% Outlet valve Suction valve 10 20 30 40 50 60 70 80 90 100 Flow Fixed speed The fan power curve V Technical Demonstration Variable speed Variation in flow obtained by varying the motor speed Powers 100 % 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% Outlet valve Suction valve Variable speed drive 10 20 30 40 50 60 70 80 90 100 Flow I II Introduction The applications III Air conditioning system IV HVAC equipement overwiew V Technical Demonstration Vi Conclusion VI Conclusion Why variable speed drives ? The messages for OEM’s To get more flexibilty Easy to commissioning and adjust Save mechanical cost (optimize cost solution) VI Conclusion Why variable speed drives ? The messages for End users With fan motor or refrigeration compressor: the drives give the amount of motor speed to meet the demand Refrigeration, HVAC systems are designed for full load conditions : Most of the time the load is not peak Full motor capacity is not required Chillers typically run 90% of the time at part load Without drives : motors run at higher speed than necessary Or they are cycling on and off frequently Frequent cycling reduce the lifetime of the system VI Conclusion Why variable speed drives ? The messages for End users One of the most effective technology applied in the recent years on HVAC applications to maximize efficiency to reduce operating cost The drives prevent wasted energy : by precisely matching motor speed with cooling demand can dramatically cut power usage reduce mechanical stress and motor wear (less maintenance) Short payback period : to years depending on energy costs and application cycle using drive is a great investment with affordable cost immediate energy saving VI Conclusion Type of drives required Requirement of compressors : Starting torque must be considered in selecting a drive, as refrigerant density is often much higher at start-up than at operating conditions Centrifugal, rotary scroll, single screw and twin-screw : Low starting torque ATV21 or ATV61 (30 to 200hp) Reciprocating compressors (Piston) : Typically, 160% starting torque ATV71 (1 to 600hp) Fans : variable torque (110% Tn max) : ATV21 or ATV61 Pumps : variable torque (110% Tn maxi) : ATV21 or ATV61 With variable speed drives, current to motor is limited Reduce the monthly bill reduce mechanical stress maximize efficiency HVAC targeted applications AHU VI Conclusion FCU VAV Power range 1.5 to 75kW Chiller Power range 0.4 to 22kW Power range 0.2 to 3.7kW ATV21 ATV61 Building Refrigerator Power range Main :75 to 400kW Helper : 15 to 55kW ATV61 ATV21 ATV61 ATV21 Semiconductor factory Heat pump charge Roof top unit Power range 37 to 110 kW Power range 1.5 to 30kW ATV21 ATV61 ATV61 V Conclusion uestions & Answers Thanks for your attention I- Launching product features II- Programing lab on ATV21 III- Harmonic solution IV- HVAC, Engergy saving V- Water solution with multipump card VI- CANopen network with controller inside card [...]... FCU VAV Power range 1.5 to 75kW Chiller Power range 0.4 to 22kW Power range 0.2 to 3.7kW ATV21 ATV61 Building Refrigerator Power range Main :75 to 400kW Helper : 15 to 55kW ATV61 ATV21 ATV61 ATV21 Semiconductor factory Heat pump charge Roof top unit Power range 37 to 110 kW Power range 1.5 to 30kW ATV21 ATV61 ATV61 V Conclusion uestions & Answers Thanks for your attention ... conditions Centrifugal, rotary scroll, single screw and twin-screw : Low starting torque ATV21 or ATV61 (30 to 200hp) Reciprocating compressors (Piston) : Typically, 160% starting torque ATV71 (1 to 600hp) Fans : variable torque (110% Tn max) : ATV21 or ATV61 Pumps : variable torque (110% Tn maxi) : ATV21 or ATV61 With variable speed drives, current to motor is limited Reduce the monthly bill reduce ... Technical Demonstration VI Conclusion I Introduction Statement Cutting Energy Costs 50% of all energy used in a typical building is for HVAC operation (Fans and pumps motors) Fan speed can be adjusted... The applications III Air conditioning system IV HVAC equipment overview V Technical Demonstration VI Conclusion IV HVAC equipment overview IV HVAC equipment overview The Chillers A key component... place to look for energy savings There is an advantage using drives because fan power varies as the cube of the air rate and thermal performance varies directly as the air rate IV HVAC equipment