Toshiba S-MMS vs LG MULTI V Plus II

Copyright 2008 All rights reserved LG Electronics Inc.ⓒ

Toshiba S-MMS vs LG MULTI V Plus II

LG Electronics Inc. LGEHQ CAC Team


ReciprocatingCompressor

RotaryCompressor

ScrollCompressor

Strong point Low costMiddle cost,

Compressing part is simple

Liquid handling capacityLow vibration & noise,

high capacity

Weak pointHigh Vibration,

noise Less liquid handling capacity

Low reliability (spring loaded vane)High cost

NormalCapacity

Low capacity(~1HP)

Middle capacity(1~5HP)

High capacity(3~10HP)

use Refrigerator, WRAC PAC, RAC etc. Multi, Commercial A/C

1. Compressor comparison

Inverter Scroll compressor is the best solution for a commercial building.


2. Power consumption comparison

■ Design condition of HCL COMNET SYSTEMS & SERVICES LTD - Total capacity of system : 560Hp (48Hp * 11EA / 32Hp * 1EA)

　

48HP 32HPTotalpower

consumption(kW/h)

Powerconsumption

(kW/h)

Nos. of ODUs

Subtotal

(kW/h)

Powerconsumption

(kW/h)

Nos. ofODUs

Subtotal

(kW/h)

S-MMS 49.67 11 546.37 28.65 1 28.65 575.02

MULTI V Plus II 42 11 462 28 1 28 490

■ Operation condition of A/C units - 24hours / day, 30days / month, 12month / year - Electrical charge : 6Rs / kWh

　

1month 1year

Basic power consumption

(kW/h)

Total powerconsumption

(kWh)Electrical

charge (Rs)Electrical

charge (Rs)

S-MMS 575.02 414014.4 2,484,086 29,809,037 MULTI V Plus II 490 352800.0 2,116,800 25,401,600 Gap 85.02 61214.4 367,286 4,407,437


40

45

50

55

Outdoor temp(35℃) Outdoor temp(40℃)

Toshiba LG

3. Performance comparison under the hot temp.

Outdoor unit 100% Cooling Capacity (kW)

Power consumption (kW)

Outdoor temp(35℃) Outdoor temp(40℃) Outdoor temp(35℃) Outdoor temp(40℃)

S-MMS135 125.60 49.67 52.55

MULTI V135 130.37 42.00 45.38

120

124

128

132

136

Outdoor temp(35℃) Outdoor temp(40℃)

Toshiba LG

<Cooling Capacity> <Power consumption>

45.38

52.55

42.00

49.67

125.60

130.37

135

Inverter Scroll compressor has high performance under the condition of hot temp.


16.3

13.1

60 90 120

15

20

25

Capacity (kW)

Frequency (Hz)

24.0

19.4

※Reference from each companies’ compressor catalogue

[Efficiency comparison for compressor type (reference from air-conditioning technology thesis)]

Toshiba S-MMS

Rotary compressor is weak for liquid compressing and has 92% cooling and heating efficiency compared to scroll compressor.

4. Compressor comparison (Efficiency)

MULTI V PLUS II

Rotary type Scroll type

100%(Base)92%Volumetric

Efficiency

Less Liquid handling Convenient for handling large capacityFeature

Structure

Type

LG (Korea)Toshiba (Japan)Origin ofDevelopment

MULTI V PLUS II

MULTI V PLUS II

※Based on 1 inverter comp.


5. Design limit comparison

S-MMS MULTI V PLUS II

Maximum pipe length 150m 200m

Maximum relative pipe length 175m 225m

Total expansion pipe length 300m 1000m

Height difference (Upper outdoor unit) 50m 100m

Height difference (lower outdoor unit) 40m 100m

Maximum length after first branch 65m 90m

LG MULTI V PLUS II is excellent for maximum pipe length

■ LG MULTI V PLUS II system has a plate type sub-cooling HEX

Increased sub-cooling by plate-type heat exchanger Enable to be long piping length and level difference More powerful Cooling operation

Plate type SC



Appendix. Design limit of Toshiba S-MMS


ON ON ON

MULTI V Plus II

103m

Outdoor units

Indoor units

110m

<DA Research Lab in Korea>

Appendix. Design limit of MULTI V PLUS II


Appendix. Power consumption of Toshiba S-MMS



■ Power consumption of Toshiba S-MMS 48HP : 49.67kW/h

※ Source - Toshiba Engineering data book



■ Power consumption of Toshiba S-MMS 32HP : 28.65kW/h



Appendix. Power consumption of MULTI V PLUS II

■ Power consumption of MULTI V PLUS II 48HP : 42kW/h


Appendix. Power consumption of MULTI V PLUS II

■ Power consumption of MULTI V PLUS II 32HP : 28kW/h


Appendix. Compressor capacity of Toshiba

■ No of compressors – Toshiba S-MMS 48HP : 8 Compressors (4.2kW*2)*4



■ No of compressors - MULTI V PLUS II 48HP : 6 Compressors (5.356kW+5.3kW)*3

Appendix. Compressor capacity of LG MULTI V PLUS II


Appendix. Delhi temperature



Appendix. Load performance of Toshiba S-MMS


Appendix. Load performance of Toshiba S-MMS

TC PI TC PI TC PI TC PI TC PI TC PI TC PI10 90.72 14.47 108.00 17.55 125.76 20.81 134.40 22.45 143.04 24.17 160.80 27.72 176.64 28.1412 90.72 14.75 108.00 17.87 125.76 21.19 134.40 22.87 143.04 24.64 160.80 28.14 174.24 28.4214 90.72 14.98 108.00 18.20 125.76 21.61 134.40 23.33 143.04 25.11 160.80 28.56 172.32 28.5616 90.72 15.26 108.00 18.53 125.76 21.98 134.40 23.80 143.04 25.57 160.80 28.98 169.92 28.9818 90.72 15.54 108.00 18.90 125.76 22.45 134.40 24.27 143.04 26.09 160.80 30.01 167.52 30.1920 90.72 15.82 108.00 19.27 125.76 23.10 134.40 25.48 143.04 27.95 160.80 31.45 165.12 31.6921 90.72 16.01 108.00 19.46 125.76 23.94 134.40 26.37 143.04 28.93 160.80 32.15 164.16 32.4323 90.72 16.43 108.00 20.77 125.76 25.62 134.40 28.28 143.04 31.03 160.80 33.65 161.76 33.9325 90.72 17.50 108.00 22.17 125.76 27.44 134.40 30.29 143.04 33.23 160.80 35.09 159.36 35.3727 90.72 18.67 108.00 23.66 125.76 29.31 134.40 32.34 143.04 35.56 160.80 36.59 157.44 36.8729 90.72 19.88 108.00 25.25 125.76 31.31 134.40 34.58 143.04 37.75 160.80 38.08 155.04 38.4131 90.72 21.14 108.00 26.93 125.76 33.41 134.40 36.91 143.04 39.25 160.80 39.57 152.64 39.9033 90.72 22.49 108.00 28.65 125.76 35.61 134.40 39.39 143.04 40.69 160.80 41.07 150.24 41.3935 90.72 23.89 108.00 30.52 125.76 37.99 134.40 42.00 143.04 42.19 160.80 42.56 147.84 42.9337 90.72 25.39 108.00 32.48 125.76 40.46 134.40 43.49 143.04 43.68 160.80 44.05 145.92 44.4739 90.72 26.97 108.00 34.53 125.76 43.07 131.71 44.99 143.04 45.17 160.80 45.59 143.52 46.0141 90.72 27.72 108.00 35.28 125.76 44.10 129.02 45.78 141.12 46.20 159.94 46.62 143.81 47.0443 90.72 28.14 108.00 35.70 124.99 44.52 127.68 46.20 139.78 46.62 158.59 47.04 142.46 47.4646 91.39 28.56 107.52 36.12 123.65 44.94 126.34 46.62 138.43 47.04 157.25 47.46 141.12 47.88

22.00 24.00

Combination(%) 48 HP Out door unit details

Outdoor airtemp ℃ DB

Indoor air temp. ℃ WB

(Capacity Index) 14.00 16.00 18.00 19.00 20.00

100

※ Source – LG MULTI V PLUS II Engineering data book


Appendix. Certificate for Energy conservation product

Toshiba S-MMS vs LG MULTI V Plus II

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