Inverter PAC. Introduction. March 2009
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1 Inverter PAC Introduction March 2009
2 Inverter driven PAC
3 Contents 1. Line up 2. Model name 3. Concept and the technical feature 1. Compactness of the outdoor unit 2. weight-saving outdoor unit 3. Improved installability 4. High efficiency 5. Adopted to RoHS (Restriction of Hazardous Substances) compliance 3
4 1. Line up Power 1.5HP 2.0HP 2.5HP 1-phase SRC40ZHX-S SRC50ZHX-S SRC60ZHX-S Power 1-phase 3HP FDC71VN Power 4HP 5HP 6HP 1-phase FDC100VN FDC125VN FDC140VN 3-phase FDC100VS FDC125VS FDC140VS 4
5 2. Model name F D C V N : Symbol for split PAC 2: Symbol for outdoor unit 3: Capacity code 4: Inverter model 5: Power source N: single phase S: 3-phase 5
6 1. compactness of the outdoor unit <4,5,6HP> Single-fan base model is adopted to 5 and 6HP Same footprint (5,6HP) 35% volume reduced (5,6HP) FDC100VN/VS FDC125VN/VS FDC140VN/VS : H845 x W970 x D370 6
7 1. compactness of the outdoor unit <3HP> RAC base model is adopted FDCA301HES/N: H845 x W880 x D340 11% volume reduced FDCVA302HENR FDC140VN: H750 x W880 x D340 7
8 1. compactness of the outdoor unit Comparison of outdoor unit volume 1.4 volume (m3) On 4-6HP, by applying single fan base model, the volume becomes one of smallest. MHI A B C D 0.2 E 0 3HP 4HP 5HP 6HP 8HP 10HP 8
9 2. weight-saving outdoor unit Weight becomes around half thanks to the downsizing 6HP 126kg 5HP 112kg 4HP 92kg 50% 44% 32% 63kg 63kg 63kg The key for downsizing is shown from the next 9
10 weight analysis of each component Weight (kg) Former model 6HP Others Cabinet Fan & Motor Heat Exchanger Compressor New model Main key for the downsizing and weight-saving 1) Downsizing and weight-saving of the compressor Achieved by letting the compressor operate with high frequency thanks to the vector control inverter technology. 2) DC fan motor By applying DC fan motor, downsizing, weight-saving, and better efficiency is achieved. 4 3) Compact and high efficiency heat exchanger Straight fin and high-performance grooved tube is adopted to the heat exchanger, and optimizing the wind distribution and circuit path to improve the performance. 10
11 FDC VN/VS Downsized high efficiency DC inverter rotary compressor High performance heat exchanger with the straight fin and the high efficiency grooved tube. DC fan motor Compressors are MHI made. 11
12 compressor drive method 4~6HP Vector control Vector control is a cutting-edge technology of the inverter control in order to let the compressor give the better performance by generating sinusoidal current wave form. 1 less compressor starting failure Thanks to the control, it becomes to be able to detect the rotor position correctly, and it lead to improve compressor starting. 2 Downsizing and high efficiency High revolution operation on high efficiency (high turn motor) compressor became possible thanks to the sinusoidal wave form drive, Non-energized period Rectangular wave form drive fig deg rectangular wave drive Sinusoidal wave form drive fig 1-2 vector control 12
13 DC Motor adoption to the compressor Downsized and the copper amount is reduced thanks to employing concentrated winding instead of distributed winding. It lead to the reduction of the copper loss and helps to improve the efficiency. (Fig 1-3) Coil end Distributed winding Concentrated winding Fig 1-3 Compressor motor drawing 13
14 4. High Efficiency Annual energy consumption calculation (trial calculation) Fix speed Thanks to the Inverter inverter technology, electricity consumption (kwh) annual energy consumption 8000 decreases 40% at the maximum HP 4HP 5HP 6HP 8HP 10HP Capacity Calculation condition: based on JRA4048 place: Tokyo, sort of the room: shop 14
15 4. High Efficiency <How we can achieve it?> DC fan motor adopted Optimization of Heat exchanger path SH control with LP sensor High efficiency refrigeration circuit Newly developed High efficiency DC scroll compressor (8HP) 15
16 4. High Efficiency <FDC VN/VS> SH control in cooling becomes much accurate High efficiency compressor is applied 16
17 Thank you for your attention! 17
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