MULTI V PLUS II

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Toshiba S-MMS vs LG MULTI V Plus II
LG Electronics Inc.
LGEHQ CAC Team
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
1. Compressor comparison
Inverter Scroll compressor is the best solution for a commercial building.
Reciprocating
Compressor
Rotary
Compressor
Scroll
Compressor
Strong point
Low cost
Middle cost,
Compressing part is simple
Liquid handling capacity
Low vibration & noise,
high capacity
Weak point
High Vibration,
noise
Less liquid handling capacity
Low reliability (spring loaded vane)
High cost
Normal
Capacity
Low capacity
(~1HP)
Middle capacity
(1~5HP)
High capacity
(3~10HP)
use
Refrigerator, WRAC
PAC, RAC etc.
Multi, Commercial A/C
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
2. Power consumption comparison
■ Design condition of HCL COMNET SYSTEMS & SERVICES LTD
- Total capacity of system : 560Hp (48Hp * 11EA / 32Hp * 1EA)
48HP
Power
Nos. of
consumption
ODUs
(kW/h)
S-MMS
MULTI V Plus II
32HP
Sub
total
(kW/h)
Power
Sub
Nos. of
consumption
total
ODUs
(kW/h)
(kW/h)
Total
power
consumption
(kW/h)
49.67
11
546.37
28.65
1
28.65
575.02
42
11
462
28
1
28
490
■ Operation condition of A/C units
- 24hours / day, 30days / month, 12month / year
- Electrical charge : 6Rs / kWh
1month
Basic power
consumption
(kW/h)
S-MMS
MULTI V Plus II
Gap
Total power
consumption
(kWh)
1year
Electrical
charge (Rs)
Electrical
charge (Rs)
575.02
414014.4
2,484,086
29,809,037
490
352800.0
2,116,800
25,401,600
85.02
61214.4
367,286
4,407,437
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
3. Performance comparison under the hot temp.
Inverter Scroll compressor has high performance under the condition of hot temp.
Outdoor unit 100%
Cooling Capacity (kW)
Power consumption (kW)
Outdoor temp(35℃)
Outdoor temp(40℃)
Outdoor temp(35℃)
Outdoor temp(40℃)
S-MMS
135
125.60
49.67
52.55
MULTI V
135
130.37
42.00
45.38
55
136
135
52.55
132
130.37
50
49.67
128
125.60
124
45.38
45
42.00
120
Outdoor temp(35℃)
Outdoor temp(40℃)
40
Outdoor temp(35℃)
Toshiba
LG
<Cooling Capacity>
Tos hiba
Outdoor temp(40℃)
LG
<Power consumption>
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
4. Compressor comparison (Efficiency)
Rotary compressor is weak for liquid compressing and has 92% cooling
and heating efficiency compared to scroll compressor.
Toshiba S-MMS
MULTI V PLUS II
Capacity (kW)
24.0
25
Type
Rotary type
MULTI V PLUS II
Scroll type
20
16.3
※Based on 1 inverter comp.
15
Structure
19.4
13.1
60
Frequency
(Hz)
90
120
※Reference from each companies’ compressor catalogue
MULTI V PLUS II
Feature
Less Liquid handling
Convenient for
handling large
capacity
Volumetric
Efficiency
92%
100%
(Base)
Origin of
Development
Toshiba (Japan)
LG (Korea)
[Efficiency comparison for compressor type
(reference from air-conditioning technology thesis)]
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
5. Design limit comparison
LG MULTI V PLUS II is excellent for maximum pipe length
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 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
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Design limit of Toshiba S-MMS
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Design limit of MULTI V PLUS II
Outdoor units
MULTI V Plus II
110m
ON
ON
ON
Indoor units
<DA Research Lab in Korea>
103m
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Power consumption of Toshiba S-MMS
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Power consumption of Toshiba S-MMS
■ Power consumption of Toshiba S-MMS 48HP : 49.67kW/h
※ Source - Toshiba Engineering data book
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Power consumption of Toshiba S-MMS
■ Power consumption of Toshiba S-MMS 32HP : 28.65kW/h
※ Source - Toshiba Engineering data book
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Power consumption of MULTI V PLUS II
■ Power consumption of MULTI V PLUS II 48HP : 42kW/h
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Power consumption of MULTI V PLUS II
■ Power consumption of MULTI V PLUS II 32HP : 28kW/h
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Compressor capacity of Toshiba
■ No of compressors – Toshiba S-MMS 48HP : 8 Compressors (4.2kW*2)*4
※ Source - Toshiba Engineering data book
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Compressor capacity of LG MULTI V PLUS II
■ No of compressors - MULTI V PLUS II 48HP : 6 Compressors (5.356kW+5.3kW)*3
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Delhi temperature
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Load performance of Toshiba S-MMS
※ Source - Toshiba Engineering data book
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Load performance of Toshiba S-MMS
Combination(%)
(Capacity Index)
100
Outdoor air
temp ℃ DB
10
12
14
16
18
20
21
23
25
27
29
31
33
35
37
39
41
43
46
14.00
TC
PI
90.72
14.47
90.72
14.75
90.72
14.98
90.72
15.26
90.72
15.54
90.72
15.82
90.72
16.01
90.72
16.43
90.72
17.50
90.72
18.67
90.72
19.88
90.72
21.14
90.72
22.49
90.72
23.89
90.72
25.39
90.72
26.97
90.72
27.72
90.72
28.14
91.39
28.56
16.00
TC
PI
108.00 17.55
108.00 17.87
108.00 18.20
108.00 18.53
108.00 18.90
108.00 19.27
108.00 19.46
108.00 20.77
108.00 22.17
108.00 23.66
108.00 25.25
108.00 26.93
108.00 28.65
108.00 30.52
108.00 32.48
108.00 34.53
108.00 35.28
108.00 35.70
107.52 36.12
48 HP Out door unit details
Indoor air temp. ℃ WB
18.00
19.00
20.00
TC
PI
TC
PI
TC
PI
125.76
20.81 134.40 22.45
143.04
24.17
125.76
21.19 134.40 22.87
143.04
24.64
125.76
21.61 134.40 23.33
143.04
25.11
125.76
21.98 134.40 23.80
143.04
25.57
125.76
22.45 134.40 24.27
143.04
26.09
125.76
23.10 134.40 25.48
143.04
27.95
125.76
23.94 134.40 26.37
143.04
28.93
125.76
25.62 134.40 28.28
143.04
31.03
125.76
27.44 134.40 30.29
143.04
33.23
125.76
29.31 134.40 32.34
143.04
35.56
125.76
31.31 134.40 34.58
143.04
37.75
125.76
33.41 134.40 36.91
143.04
39.25
125.76
35.61 134.40 39.39
143.04
40.69
125.76
37.99 134.40 42.00
143.04
42.19
125.76
40.46 134.40 43.49
143.04
43.68
125.76
43.07 131.71 44.99
143.04
45.17
125.76
44.10 129.02 45.78
141.12
46.20
124.99
44.52 127.68 46.20
139.78
46.62
123.65
44.94 126.34 46.62
138.43
47.04
22.00
TC
PI
160.80
27.72
160.80
28.14
160.80
28.56
160.80
28.98
160.80
30.01
160.80
31.45
160.80
32.15
160.80
33.65
160.80
35.09
160.80
36.59
160.80
38.08
160.80
39.57
160.80
41.07
160.80
42.56
160.80
44.05
160.80
45.59
159.94
46.62
158.59
47.04
157.25
47.46
24.00
TC
PI
176.64
28.14
174.24
28.42
172.32
28.56
169.92
28.98
167.52
30.19
165.12
31.69
164.16
32.43
161.76
33.93
159.36
35.37
157.44
36.87
155.04
38.41
152.64
39.90
150.24
41.39
147.84
42.93
145.92
44.47
143.52
46.01
143.81
47.04
142.46
47.46
141.12
47.88
※ Source – LG MULTI V PLUS II Engineering data book
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Certificate for Energy conservation product
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
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