Perfect solution for large and high rise buildings
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Transcript of Perfect solution for large and high rise buildings
Perfect solution for large Perfect solution for large and high rise buildingsand high rise buildings
was developed to focus large buildings and high rise buildings.
is technically advanced with maximized cooling load, high efficiency and very economical system.
Large capacity models(20HP~40HP)Longest pipe length is 120mTotal maximum pipe length is 220m
Development Plan – Outdoor unit (R22, 50/60Hz)
Capa.(HP)Combination Unit
5~16
C/O Sub
Main
8~12
No. of O/door unit
H/P
Capacity(HP)
5~16Main
Sub 8~12
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1
8
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1
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2
16
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2
3
30
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3
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2
20
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2
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2
24
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2
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1
10
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1
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1
14
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1
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No. of O/door unit
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3
32
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3
3
34
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3
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1
5
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1
1
6
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1
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1
12
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1
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2
18
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2
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2
22
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2
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2
26
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2
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2
28
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2
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3
36
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3
3
38
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3
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3
40
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3
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Development Plan – Indoor unit (R22, 50/60Hz) 7k 9k 12k 18k 21K 24k 28k 36k 38k 42k 48k
2.1 kW 2.6 kW 3.5 kW 5.3 kW 6.2kW 7.0 kW 8.2 kW 10.6 kW 11.1 kW 12.3 kW 14.1 kW
SR SR SR ST
SU SU SU
SP SP
SV SV
TC TC TC
TE TE TD TD TD TD TD TD TD
BH BH BH BG BG BG BG BE
BT BT BT
CD CD
1군 '04.04.152군 '04.07.313군 '04.09.30
HighStatic
Low Static
Exposed
Art Cool
Art CoolWide
1 Way
4 Way
Type Image
General
Mirror
Under-ceiling
Inverter scroll compressor is totally designed and developed by LG
*Multi power system : Consist of 1 inverter compressor and other constant speed compressors.
Widest line up(8HP~40Hp)
Single pipe system (1 pair of pipe from outdoor unit)
More powerful and dynamic multi power system*
High efficiency & Low noise inverter scroll compressor
Low efficiency(non-linear)
Variable capacity output by “Bypass system”
Indoor cooling/heating load(%)
Sys
tem
C
apa
city
(%)
Highly efficient Linear control
Sys
tem
C
apa
city
(%)
Indoor cooling/heating load(%)
Const. SpeedComp.1
Const. SpeedComp.2
Const. SpeedComp.3
Const. SpeedComp.1
Const. SpeedComp.1
Const. SpeedComp.2
High efficiency(Linear)
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.
Variable capacity “Bypass system”
Multi V plus
Compared to competitors our products have high COP and EER.
High Energy Saving Levels -15 ℃Model
By Pass Daikin
Cooling
HeatingCapacity
PowerConsup-tion
COP Cooling
Heating
Item Unit
Standard
-10 ℃Model
Standard
Cooling
Heating
Conventional
Sleeve size Sleeve size
4 Unit 2 Unit
Saving Installation Space
Compared to competitors our products have high COP and EER.
Total outdoor unit capacity: 40HP(LRP-N2900A 4 units)
Total outdoor unit capacity : 40HP(LRP-N5800B 2 units)
Conventional Through the wall sleeve pipe diameter area (50% area saving)
Sleeve size
In 40HP case floor area comparison between 10hp and 20 hp models (21% space saving)
Area 9.03m2Area 7.1m2
Sleeve size
Flexible pipe installation in 3 directions
Various installation case according to outdoor unit location
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
Altitude
Longest pipe
Subcooling circuit technology adapting Double tube heat exchanger(LG patent)
After Reliability test, installation possible up to 120m long pipe, 50m altitude
Improved heating and cooling capacity due to advance subcooling circuit
Outdoorunit
2 phaserefrigerant
Expansionvalve
Double tubeHEX Indoor
unit
Liquid refrigerant
Spiral tube
Longest pipe, highest altitude technology
40HP
Subcooling control is unstable Pressure drop is large if use
long piping Refrigerant amount is unstable Indoor unit capacity drops
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%)
Conventional
improved heating and cooling capacitydue to advance subcooling circuit
Outdoorunit
Indoorunit
Outdoorunit
2 phaserefrigerant
Expansionvalve
Double tubeHEX Indoor
unit
Liquid refrigerant
Spiral tube
New Subcooling Circuit
Wide range of running conditions
Cooling range
competitors
Heating range
competitors
Alternate compressor cycling / Back-up function
1) Normal running conditions
Multi compressor system with longer life cycle of each compressor due to alternate working
Inverter
Const. speed
Const. speed
Const. speed
Alternate compressor cycling / back-up function
2) Compressor failure situation
Alternative compressor is still running
Inverter
Const. speed
Const. speed
Const. speed
High Safety Measures
Heat exchanger
Safety cover
Separated equipments space (compressor,control box) and heat exchanger space
Resistant to dust, rain, corrosion and other environment factors
Control and mechanical parts are perfectly sealed
Low noise outdoor unit
Rear Side Front
Outdoor fan motor has step controlNoise transfer from compressor to HEX
Outdoor fan motor has inverter controlLow noise due to separated parts
and prevented by safety cover
Rear Side Front
Less 4~5dB
Convenient maintenance | Swing Type Door
Smart aesthetics after installation
Convenient maintenance due to swing type door design
Fuzzy control
Tar
get
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.℃
Intelligent Fuzzy Control System
Installation (Dong Moon High school)
Outdoor Unit
1 WayCst
4 WayCst
4 WayCst
Outdoor unit : 20HP x 13set, 10HP x 13set Indoor unit : 4 way x 74EA, 1 way x 4EA
Thermister
Solenoid valve
Pressure sensor
Pressure switch
Check valve
LEV
Service valve
정속Comp
InvComp
O/SO/S
Drier
H/G
Liq. Inj
Gaspipe
Liquidpipe
Air temp.sensor
HEX thermostat of outdoor unit
Liquid Temp. sensor
Outlet tempSensor of Subcooling circuitsensor
CompressorDischargeTemp.sensor
Suction Temp sensor
High pressure sensor
LowPressuresensor
Main Outdoor LEV
SC LEV
Reversing Valve
Accum
inlet tempSensor of Subcooling circuitsensor
■ Schematics of 20HP Cycle
Enjoy Fresh & Cool Life… with LG!!
Thank You