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Perfect solution for large building

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Presentation on theme: "Perfect solution for large building"— Presentation transcript:

1 Perfect solution for large building
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 Development Plan – Outdoor unit (R22, 50/60Hz)
Combination Unit Capa. (HP) Capacity(HP) 1 5 1 6 1 8 1 10 1 12 1 14 2 16 2 18 2 20 2 22 2 24 2 26 2 28 3 30 3 32 3 34 3 36 3 38 3 40 C/O Main 5~16 Sub 8~12 No. of O/door unit H/P Main 5~16 Sub 8~12 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 Indoor cooling/heating Indoor cooling/heating
Highly efficient Linear control Low efficiency (non-linear) High efficiency (Linear) Const. Speed Comp.3 Capacity(%) System Capacity(%) System Const. Speed Comp.2 Const. Speed Comp.2 Const. Speed Comp.1 Const. Speed Comp.1 Const. Speed Comp.1 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 High Energy Saving Levels
-10℃ Model -15℃ Model Item Unit By Pass Daikin Cooling Standard Standard Heating Capacity Cooling Power Consup- tion Heating Cooling COP Heating Compared to competitors our products have high COP and EER.

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

10 Total outdoor unit capacity: 40HP Total outdoor unit capacity : 40HP
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 Sleeve size Total outdoor unit capacity: 40HP (LRP-N2900A 4 units) Total outdoor unit capacity : 40HP (LRP-N5800B 2 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 Improved heating and cooling
40HP Subcooling circuit technology adapting Double tube heat exchanger(LG patent) Expansion valve Altitude Double tube HEX Indoor unit Outdoor unit 2 phase refrigerant Liquid refrigerant Longest pipe Spiral tube 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 2 phase refrigerant Liquid 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 Heating range
competitors Heating range competitors

17 Alternate compressor cycling / Back-up function
1) Normal running conditions Inverter Const. speed Const. speed Const. speed 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 Inverter Const. speed Const. speed Const. speed Alternative compressor is still running

19 High Safety Measures Control and mechanical parts are perfectly sealed
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 Outdoor fan motor has step control
Rear Side Front Rear Side 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
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 Installation (Dong Moon High school)
Outdoor unit : 20HP x 13set, 10HP x 13set Indoor unit : 4 way x 74EA, 1 way x 4EA Outdoor Unit 1 Way Cst 4 Way Cst 4 Way Cst

24 ■ Schematics of 20HP Cycle H/G Liq. Inj Gas pipe Liquid pipe
Thermister Solenoid valve Pressure sensor Pressure switch Check valve LEV Service valve 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 Accum 정속 Comp Main Outdoor LEV Liq. Inj Drier Gas pipe Outlet temp Sensor of Subcooling circuit sensor inlet temp Sensor of Subcooling circuit sensor Liquid pipe SC LEV Liquid Temp. sensor

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


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