slide1
Download
Skip this Video
Download Presentation
Perfect solution for large and high rise buildings

Loading in 2 Seconds...

play fullscreen
1 / 25

Perfect solution for large and high rise buildings - PowerPoint PPT Presentation


  • 139 Views
  • Uploaded on

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)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Perfect solution for large and high rise buildings' - morey


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Perfect solution for large building

Perfect solution for large

and high rise buildings

slide2

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
slide3

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

slide5

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.

slide6

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”

slide7

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.

slide8

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.

slide9

Saving

Installation Space

Sleeve size

Sleeve size

Conventional

2 Unit

4 Unit

  • Compared to competitors our products have high COP

and EER.

slide10

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)

slide13

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
slide14

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

slide15

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
slide16

Wide range of

running conditions

Cooling range

competitors

Heating range

competitors

slide17

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

slide18

Alternate compressor cycling / back-up function

2) Compressor failure situation

Const. speed

Const. speed

Const. speed

Inverter

  • Alternative compressor is still running
slide19

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

slide20

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

slide21

Convenient maintenance | Swing Type Door

  • Smart aesthetics after installation
  • Convenient maintenance due to swing type door design
slide22

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.

slide23

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
slide24

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

slide25

Thank You

Enjoy Fresh & Cool Life…

with LG!!

ad