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Perfect solution for large and high rise buildings

Perfect solution for large building. Perfect solution for large and high rise buildings. is technically advanced with maximized cooling load, high efficiency and very economical system. was developed to focus large buildings and high rise buildings. Large capacity models(20HP~40HP)

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Perfect solution for large and high rise buildings

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  1. Perfect solution for large building Perfect solution for large and high rise buildings

  2. is technically advanced with maximized cooling load, high efficiency and very economical system. was developed to focus large buildings and high rise buildings. • Large capacity models(20HP~40HP) • Longest pipe length is 120m • Total maximum pipe length is 220m

  3. 24 26 28 30 32 34 5 6 12 36 38 40 8 10 14 16 20 22 18 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 2 2 2 3 3 3 1 1 1 3 3 3 1 1 1 2 2 2 2 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Sub 8~12 2 2 2 3 1 1 1 3 3 1 1 1 2 2 2 3 3 3 2 Development Plan – Outdoor unit (R22, 50/60Hz) Combination Unit Capa. (HP) Capacity(HP) C/O Main 5~16 Sub 8~12 No. of O/door unit H/P Main 5~16 No. of O/door unit

  4. Development Plan – Indoor unit (R22, 50/60Hz) Under-ceiling

  5. High efficiency & Low noise inverter scroll compressor • Inverter scroll compressor is totally designed and developed by LG • More powerful and dynamic multi power system* • Single pipe system (1 pair of pipe from outdoor unit) • Widest line up(8HP~40Hp) *Multi power system : Consist of 1 inverter compressor and other constant speed compressors.

  6. Const. Speed Comp.2 Const. Speed Comp.2 Const. Speed Comp.3 Const. Speed Comp.1 Const. Speed Comp.1 Const. Speed Comp.1 Highly efficient Linear control Low efficiency (non-linear) High efficiency (Linear) System Capacity(%) System Capacity(%) Indoor cooling/heating load(%) Indoor cooling/heating load(%) Variable capacity output by “Bypass system”

  7. Variable capacity “Bypass system” Multi V plus • Low efficiency at low load conditions • Small steps load variation is difficult to control • For over load conditions (100%↑), additional compressor is required. So power consumption increases 4~6kW. In heating mode, additional heater required(4~6kW) • High efficiency at low load conditions • Small steps load variation by precise linear control of inverter compressor • All load conditions control by variable frequency(30Hz~120Hz). Thus minimizing number of compressors required.

  8. Standard Standard -10℃ Model Cooling Cooling Heating Heating High Energy Saving Levels -15℃ Model Item By Pass Unit Daikin Cooling Heating Capacity Power Consup- tion COP • Compared to competitors our products have high COP and EER.

  9. Saving Installation Space Sleeve size Sleeve size Conventional 2 Unit 4 Unit • Compared to competitors our products have high COP and EER.

  10. Sleeve size • In 40HP case floor area comparison between 10hp and • 20 hp models (21% space saving) Area 7.1m2 Area 9.03m2 Conventional • Through the wall sleeve pipe diameter area (50% area saving) Sleeve size Total outdoor unit capacity: 40HP (LRP-N5800B 2 units) Total outdoor unit capacity: 40HP (LRP-N2900A 4 units)

  11. Flexible pipe installation in 3 directions

  12. Various installation case according to outdoor unit • location

  13. Moving and handling of “conventional” unit • - Cost is high • - Possibility of drop while using cranes • Moving and handling of “Multi-V plus” unit - Outdoor unit size is compact • - Easy to handle through fork lift slot

  14. Longest pipe, highest altitude technology 40HP Subcooling circuit technology adapting Double tube heat exchanger(LG patent) Expansion valve Altitude Double tube HEX Indoor unit Outdoor unit Liquid refrigerant 2 phase refrigerant Spiral tube Longest pipe • Improved heating and cooling capacity due to advance subcooling circuit • After Reliability test, installation possible up to 120m long pipe, 50m altitude

  15. improved heating and cooling capacity due to advance subcooling circuit Expansion valve Double tube HEX Indoor unit Outdoor unit Indoor unit Outdoor unit Liquid refrigerant 2 phase refrigerant Spiral tube Conventional New Subcooling Circuit • Subcooling control is stable • Pressure drop is minimum even in long piping : keeping total capacity • Proper amount of liquid refrigerant can be t to indoor unit • Prevent indoor unit capacity drop. • Reduce total refrigerant amount (LG 100%, Daikin 112%, Mitsubishi 118%) • Subcooling control is unstable • Pressure drop is large if use long piping • Refrigerant amount is unstable • Indoor unit capacity drops

  16. Wide range of running conditions Cooling range competitors Heating range competitors

  17. Alternate compressor cycling / Back-up function 1) Normal running conditions Const. speed Const. speed Const. speed Inverter • Multi compressor system with longer life cycle of each compressor due to alternate working

  18. Alternate compressor cycling / back-up function 2) Compressor failure situation Const. speed Const. speed Const. speed Inverter • Alternative compressor is still running

  19. High Safety Measures Heat exchanger Safety cover • Control and mechanical parts are perfectly sealed • Separated equipments space (compressor,control box) and heat exchanger space • Resistant to dust, rain, corrosion and other environment factors

  20. Low noise outdoor unit Less 4~5dB Rear Side Rear Side Front Front • Outdoor fan motor has step control • Noise transfer from compressor to HEX • Outdoor fan motor has inverter control • Low noise due to separated parts and prevented by safety cover

  21. Convenient maintenance | Swing Type Door • Smart aesthetics after installation • Convenient maintenance due to swing type door design

  22. Intelligent Fuzzy Control System Fuzzy control Target PID control Time • In start up, fuzzy control senses ambient & room temperature and achieve target in shortest time as per the load condition. • Stabilize indoor air temperature to optimum level. • High capability & Reliability of the unit is assured by preventing overshooting and making use of all control system accurately. • In heating mode, keeping the indoor unit capacity down to the –10℃ of outdoor temperature.

  23. Outdoor Unit 1 Way Cst 4 Way Cst 4 Way Cst Installation (Dong Moon High school) • Outdoor unit : 20HP x 13set, 10HP x 13set • Indoor unit : 4 way x 74EA, 1 way x 4EA

  24. Thermister Solenoid valve Pressure sensor Pressure switch Check valve LEV Service valve ■ Schematics of 20HP Cycle Air temp. sensor High pressure sensor HEX thermostat of outdoor unit Reversing Valve H/G Low Pressure sensor Suction Temp sensor O/S O/S Compressor Discharge Temp. sensor Inv Comp 정속 Comp Accum Main Outdoor LEV Liq. Inj Gas pipe Drier inlet temp Sensor of Subcooling circuit sensor Outlet temp Sensor of Subcooling circuit sensor Liquid pipe SC LEV Liquid Temp. sensor

  25. Thank You Enjoy Fresh & Cool Life… with LG!!

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