amds selection
DESCRIPTION
AMDS Selection. Contents. Introduction Selection Consideration Selection Process Software Demonstration. Introduction. Sample of Installation. Selection Consideration. Unit & Piping Selection. Main Factors to consider during Piping Selection Location of equipment Indoor Unit - PowerPoint PPT PresentationTRANSCRIPT
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Contents
• Introduction
• Selection Consideration
• Selection Process
• Software Demonstration
Page 6
Main Factors to consider during Piping SelectionMain Factors to consider during Piping Selection
• Location of equipmentLocation of equipment
• Indoor UnitIndoor Unit
• Outdoor UnitOutdoor Unit
• Refnet & Distributor JointRefnet & Distributor Joint
Unit & Piping Selection
These item will influence the piping layout and length of the design
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Some other factors to consider during Piping SelectionSome other factors to consider during Piping Selection
• Equivalent Piping LengthEquivalent Piping Length
• Type of Joint for branchesType of Joint for branches
• Outdoor capacity factorOutdoor capacity factor
• Piping length & height factorPiping length & height factor
• Refrigerant Pipe SpecificationRefrigerant Pipe Specification
Unit & Piping Selection
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Equivalent length is the converted length and includes parts such as elbow, which has pressure losses in the pipe. The formula is as follow:
Equivalent length= Real length of tubing + No. of elbow × Equivalent length of each elbow + No. of oil trap ×Equivalent length of each oil trap
Equivalent Piping Calculation
Elbow Oil Trap9.52 0.18 1.30
12.70 0.20 1.5015.88 0.25 2.0019.05 0.35 2.4022.02 0.40 3.0025.40 0.45 3.4028.58 0.50 3.7031.80 0.55 4.00
Diameter of Pipe
Equivalent Length
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Restriction of Piping Length
3~5 Hp 6 Hp 8~10 Hp 12~32 Hp100 125 250 350
Actual piping length 50 70 125 150Equivalent length 60 80 150 200
25 30
Outdoor above 20 30Indoor above 20 30
15
40
5040
Length (m)
Piping
Height
Maximum equivalent length from first branch to furthers unit
Maximum height between indoor unit
Maximum length of longest branch
Between further indoor and outdoor
Total equivalanet length
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Important Factor to Consider
Example:Outdoor Model : MDS100BRPipe Diameter : 28.6 mmMain Pipe : 80mBranch Length: 20mElbows: 10 unitsOil traps: 3 units
Elbow Oil Trap9.52 0.18 1.30
12.70 0.20 1.5015.88 0.25 2.0019.05 0.35 2.4022.02 0.40 3.0025.40 0.45 3.4028.58 0.50 3.7031.80 0.55 4.00
Diameter of Pipe
Equivalent Length
Equivalent Length
= Real length of tubing + No. of elbow × Equivalent length of each elbow + No. of oil trap ×Equivalent length of each oil trap= (80 + 20) + (10 X 0.5) + (3 X 3.7) = 116.1 m
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When the equivalent length is more than 90% of the maximal real length of the main tubing , the gas pipe need to be increase to one size bigger (diameter).
After expanded the gas pipe to a larger diameter, the equivalent length need to be recalculate. The formula is as follow:
Expanded Equivalent Length
= Equivalent length of main piping X 0.5 + equivalent length of the branch
Criteria 1
Criteria 2
Important Factor to Consider
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Important Factor to Consider
3~5 Hp 6 Hp 8~10 Hp 12~30 Hp100 125 250 350
Actual piping length 50 70 125 150Equivalent length 60 80 150 200
25 30
Outdoor above 20 30Indoor above 20 30
Length (m)
Piping
Height
Maximum equivalent length from first branch to furthers unit
Maximum height between indoor unit
Maximum length of longest branch
Between further indoor and outdoor
Total equivalanet length
15
40
5040
Maximum allow actual length for 10Hp is 125mCalculated Equivalent Length is 116.1mRatio of Equivalent Length over Maximum allow Actual Length= 92.88%
Equivalent length is more than 90% of the maximal real length.Hence the gas Pipe of MDS100BR need to change.
Example:
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Important Factor to ConsiderExample:Hence the gas Pipe of MDS100BR need to change from 28.6 mm to 39.40 mmAfter expanded the gas pipe to a larger diameter, the equivalent length need to be recalculate.
Expanded Equivalent Length = Equivalent length of main piping X 0.5 + equivalent length of the branch
Main Pipe : 80mBranch Length: 20mElbows: 10 unitsOil traps: 3 units
Equivalent Length
= Real length of tubing + No. of elbow × Equivalent length of each elbow + No. of oil trap ×Equivalent length of each oil trap= (80 + 20) + (10 X 0.5) + (3 X 3.7) = 116.1 m
Expanded Equivalent Length = [80 + (10 X 0.5) + (3 X 3.7)] X 0.5 + 20
Expanded Equivalent Length = 68.05 m
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• Type of Joint for branchesType of Joint for branches
• Influence the piping layout designInfluence the piping layout design
• Outdoor capacity factorOutdoor capacity factor
• Influence by the design ambient temperature and Influence by the design ambient temperature and indoor temperatureindoor temperature
• Piping length & height factor Piping length & height factor
• Influence by the location of outdoor and the total Influence by the location of outdoor and the total piping lengthpiping length
• Refrigerant Pipe SpecificationRefrigerant Pipe Specification
• Use to determine the branches diameterUse to determine the branches diameter
Unit & Piping Selection
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Selection of branch joint / distributors for MDS
Unit & Piping Selection
ModelMDS-Y1MDS-Y2MDS-Y3MDS-Y4MDS-Y6MDS-Y7MDS-C1MDS-C2MDS-C3
Refnet Joint (2 Branches)
Distributors Header (4 Branches)
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MDS-Y1~Y4 dimensional drawing
A B C D E
(outer diameter)
F G H I
(outer diameter)
J K L M N
(outer diameter)
O P Q R
MDS-Y1 553 172 293 120 28.6 28.9 25.7 22.5 28.6 28.9 25.7 22.5 19.3 22.2 19.3 16.1 12.9 9.7MDS-Y2 420 142 223 80 15.88 16.1 12.9 9.7 12.7 12.9 9.7 6.5 12.7 12.9 9.7 6.5MDS-Y3 420 142 223 80 15.88 16.1 12.9 9.7 12.7 12.9 9.7 6.5 15.88 16.1 12.9 9.7MDS-Y4 493 142 223 80 22.2 22.5 19.3 16.1 19.1 19.3 16.1 12.9 9.7 19.1 19.3 16.1 12.9
Diameter (mm)Refnet model
Length(mm) Diameter (mm) Diameter (mm)
Unit & Piping Selection
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RequirementRequirementCooling only modelCooling only model
• Ambient temperature : 40.0 Ambient temperature : 40.0 °C°C
• Indoor temperature : 21.0 Indoor temperature : 21.0 °C°C
Other InformationOther Information
• Piping lengthPiping length :: 70m70m
• Height between I/OHeight between I/O :: 4m4m
• Outdoor Unit located below indoorsOutdoor Unit located below indoors
Unit - AWall
Mounted
Unit - BWall
Mounted
Unit - CWall
Mounted
Unit - DWall
Mounted
Unit - ECeiling
Cassette
Unit - FCeiling
Concealed
2.7 2.7 5.0 5.4 8.8 6.4
Required Cooling Capacity
(kW)
Unit & Piping Selection
Example
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Indoor RequirementWall Mounted
WMD 09G WMD 10G WMD 15G WMD 20G WMD 25GBtu/h 8,500 9,600 12,300 19,100 22,200kW 2.5 2.8 3.6 5.6 6.5
Ceiling CassetteCKD 10C CKD 15C CKD 20C
Btu/h 9,600 12,300 19,100kW 2.8 3.6 5.6
Ceiling CassetteCKD 20A CKD 25A CKD 30A CKD 40A CKD 50A
Btu/h 19,100 22,200 30,700 38,200 47,800kW 5.6 6.5 9.0 11.2 14.0
Ceiling ConcealedCCD 10C CCD 15C CCD 20C CCD 25C CCD 28C
Btu/h 9,600 12,300 19,100 22,200 27,300kW 2.8 3.6 5.6 6.5 8.0
Ceiling ConcealedCCD 30C CCD 38C CCD 40C CCD 50C CCD 60C
Btu/h 30,700 34,100 38,200 47,800 56,000kW 9.0 10.0 11.2 14.0 16.4
COOLING ONLY MODEL
NOMINAL CAPACITY
COOLING ONLY MODEL
COOLING ONLY MODEL
COOLING ONLY MODEL
NOMINAL CAPACITY
COOLING ONLY MODEL
NOMINAL CAPACITY
NOMINAL CAPACITY
NOMINAL CAPACITYUnit - A Wall Mounted 2.7Unit - B Wall Mounted 2.7Unit - C Wall Mounted 5.0Unit - D Wall Mounted 5.4Unit - E Ceiling Cassette 8.8Unit - F Ceiling Concealed 6.4
Required Cooling Capacity(kW)
Unit & Piping Selection
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Example
A B C D E F
Capacity, kW 1.8 2.0 2.2 4.0 5.0 5.8
Model 10 10 20 20 30 25
HP of indoor unit 2.8 2.8 5.6 5.6 9.0 6.5
• Total Indoor capacity is 32.3 kW
Unit & Piping Selection
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Example
Selection CriteriaSelection Criteria
• Total Indoor capacity must be range between 50% ~ Total Indoor capacity must be range between 50% ~ 120% of the outdoor capacity.120% of the outdoor capacity.
• We recommend that the outdoor capacity equals to the We recommend that the outdoor capacity equals to the total indoor capacity or a little larger than the indoor total indoor capacity or a little larger than the indoor capacitycapacity
Unit & Piping Selection
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Example
Selected Outdoor Selected Outdoor : : MDS120BMDS120B
Cooling CapacityCooling Capacity : 32.5kW: 32.5kW
%38.99
%1005.323.32
%100
/
CapacityOutdoorCapacityIndoorTotal
RatioOI
Comply to selection criteria
Unit & Piping Selection
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Example• Selected Outdoor and Indoor ModelSelected Outdoor and Indoor Model
Outdoor Model MDS 120B 32.5 kW
Indoor A WMD 10G 2.8 kW
Indoor B WMD 10G 2.8 kW
Indoor C WMD 20G 5.6 kW
Indoor D WMD 20G 5.6 kW
Indoor E CKD 30A 9.0 kW
Indoor F CCD 25C 6.5 kW
Unit & Piping Selection
Page 41
ExampleOutdoor Capacity factorOutdoor Capacity factor
• Cooling only modelCooling only model
• Ambient temperature : 40.0 Ambient temperature : 40.0 °C°C
• Indoor temperature : 22.0 Indoor temperature : 22.0 °C°C1.03
Unit & Piping Selection
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ExamplePiping length & height factorPiping length & height factor
• Piping lengthPiping length :: 70m70m
• Height between I/OHeight between I/O :: 4m4m
• Outdoor Unit located below indoorsOutdoor Unit located below indoors
91%
Unit & Piping Selection
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Example
Total Capacity Total Capacity
• = Outdoor Capacity X Outdoor Capacity Factor = Outdoor Capacity X Outdoor Capacity Factor
• X Piping length & height FactorX Piping length & height Factor
• = 32.5 kW X 1.03 X 94%= 32.5 kW X 1.03 X 94%
• = 31.47 kW= 31.47 kW
Unit - A Wall Mounted 2.7Unit - B Wall Mounted 2.7Unit - C Wall Mounted 5.0Unit - D Wall Mounted 5.4Unit - E Ceiling Cassette 8.8Unit - F Ceiling Concealed 6.4Total Required Capacity 31.0
Required Cooling Capacity(kW)
Comply to requirement
Unit & Piping Selection
Page 45
Example 1.1. Selection pipe diameterSelection pipe diameter
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW
2.8 kW
Unit & Piping Selection
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Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW
2.8 kW
Main pipeMain pipe diameter : diameter : ø ø 15.8815.88mm / ø mm / ø 28.628.6mmmm
Downstream capacityDownstream capacity
Point APoint A A-B-C : 14.9 kWA-B-C : 14.9 kWA-D-E : 17.4 kW A-D-E : 17.4 kW
Point BPoint B B-C : 8.4 kWB-C : 8.4 kWD-E : 8.4 kWD-E : 8.4 kW
Unit & Piping Selection
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Refrigerant Pipe Specification : MDS-B Point APoint A A-B-C : 14.9 kWA-B-C : 14.9 kW A-D-E : 17.4 kWA-D-E : 17.4 kW
Unit & Piping Selection
Page 49
Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW
2.8 kW
Main pipeMain pipe diameter : diameter : ø ø 15.8815.88mm / ø mm / ø 28.6028.60mmmm
A-D diameter : ø 12.70mm / ø 22.23mm
A-B diameter : A-B diameter : ø ø 9.529.52mm / ø mm / ø 19.0519.05mmmm
Unit & Piping Selection
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Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW
2.8 kW
Point BPoint BB-C : 8.4 kWB-C : 8.4 kWB-CCD25C : 6.5 kWB-CCD25C : 6.5 kW
Unit & Piping Selection
Page 51
Refrigerant Pipe Specification : MDS-B Point BPoint B B-C : 8.4 kWB-C : 8.4 kW B-CCD25C : 6.5 kW (follow indoor pipe size)B-CCD25C : 6.5 kW (follow indoor pipe size)
Unit & Piping Selection
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Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW
2.8 kW
A-B: A-B: ø ø 9.529.52
/ ø / ø 19.0519.05
B-CCD25C: B-CCD25C: ø 9.52 / ø1ø 9.52 / ø15.885.88
B-C: B-C: ø 9.52 / ø1ø 9.52 / ø15.885.88
Unit & Piping Selection
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Example
Inlet Outlet Inlet OutletTo B & C 14.90 9.52 19.05To D & E 17.40 12.70 22.23To CCD25C 6.50 9.52 15.88To C 8.40 9.52 15.88To WM D20G 5.60 6.35 15.88To WM D10G 2.80 6.35 9.52To CKD30A 9.00 9.52 15.88To E 8.40 9.52 15.88To WM D20G 5.60 6.35 15.88To WM D10G 2.80 6.35 9.52
15.88
28.60
19.05
15.88
Point E
15.88
9.52
9.52
12.70
9.52
Point A
Point B
Point C
Point D 22.23
Liquid pipe (ø, mm) Gas pipe (ø, mm)Location
Capacity (kW)
Branch
Unit & Piping Selection
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Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW
9.0 kW
2.8 kW
Main Pipe: ø Main Pipe: ø 15.8815.88 / ø / ø 28.628.6
B-C: ø 9.52 / ø1B-C: ø 9.52 / ø15.885.88
A-B: ø 9.52 / ø1A-B: ø 9.52 / ø19.059.05
A-D: ø12.7 / ø22.23A-D: ø12.7 / ø22.23 D-E: ø9.52 / ø1D-E: ø9.52 / ø15.885.88
Unit & Piping Selection
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Example Selection of branchSelection of branch
Select the refnet joint of point ASelect the refnet joint of point A
A (liquid) A (liquid) : MDS-: MDS-Y2Y2
A (gas) A (gas) : MDS-: MDS-Y1Y1
A B C D E
(outer diameter)
F G H I
(outer diameter)
J K L M N
(outer diameter)
O P Q R
MDS-Y1 553 172 293 120 28.6 28.9 25.7 22.5 28.6 28.9 25.7 22.5 19.3 22.2 19.3 16.1 12.9 9.7MDS-Y2 420 142 223 80 15.88 16.1 12.9 9.7 12.7 12.9 9.7 6.5 12.7 12.9 9.7 6.5MDS-Y3 420 142 223 80 15.88 16.1 12.9 9.7 12.7 12.9 9.7 6.5 15.88 16.1 12.9 9.7MDS-Y4 493 142 223 80 22.2 22.5 19.3 16.1 19.1 19.3 16.1 12.9 9.7 19.1 19.3 16.1 12.9
Diameter (mm)Refnet model
Length(mm) Diameter (mm) Diameter (mm)
A-D diameter : A-D diameter : ø 12.70 / ø 22.23ø 12.70 / ø 22.23
A-B diameter : A-B diameter : ø 9.52 / ø 19.05ø 9.52 / ø 19.05
All unit in mm
AA
Main Pipe diameter : Main Pipe diameter : ø 15.88 / ø 28.60ø 15.88 / ø 28.60
Unit & Piping Selection
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Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW2.8 kW
Main Pipe: ø Main Pipe: ø 15.8815.88 / ø / ø 28.628.6
B-C: B-C: ø 9.52 / ø1ø 9.52 / ø15.885.88
A-B: ø 9.52 / ø1A-B: ø 9.52 / ø19.059.05
A-D: ø12.7 / ø22.23A-D: ø12.7 / ø22.23 D-E: ø9.52 / ø1D-E: ø9.52 / ø15.885.88
Liquid GasWMD 10G 6.35 9.52WMD 20G 6.35 15.88CCD 25C 9.52 15.88CKD 30A 9.52 15.88
ModelIndoor Valve Size (Ø, mm)
Unit & Piping Selection
Page 57
Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW
2.8 kW
Liquid GasTo B & CTo D & ETo CCD25CTo CTo WMD20GTo WMD10GTo CKD30ATo ETo WMD20GTo WMD10G
MDS-Y2 MDS-Y3
MDS-Y2 MDS-Y1
MDS-Y2 MDS-Y4
Refnet Joint
MDS-Y2 MDS-Y4
MDS-Y2 MDS-Y3
Point E
Point A
Point B
Point C
Point D
Location Branch
Unit & Piping Selection
Page 58
Example
Formula:
G = ∑ Li* Gi
Using liquid tube length to calculate required refrigerant. Add in refrigerant.
G : Refrigerant charge amountLi : The each section of liquid tube length in all (m)Gi : Charge amount per length ( g/m)
Unit & Piping Selection
Page 59
Example
A B C
D E
MDS120B
CCD 25C WMD 20G WMD 10G
WMD 20GCKD 30A
WMD 10G
6.5 kW5.6 kW 2.8 kW
5.6 kW9.0 kW 2.8 kW
ø ø 15.88 (10m)15.88 (10m)
ø ø 9.52 (5m)9.52 (5m)
ø ø 9.52 (2m)9.52 (2m)
ø ø 9.52 (4m)9.52 (4m)ø ø 6.35 (2m)6.35 (2m)
ø ø 6.35 (5m)6.35 (5m)
ø ø 6.35 (5m)6.35 (5m)
ø ø 6.35 (2m)6.35 (2m)
ø ø 9.52 (5m)9.52 (5m)
ø ø 9.52 (5m)9.52 (5m)
ø ø 12.7 (25m)12.7 (25m)
Total Piping Length15.88mm – 10m12.7mm – 25m9.52mm – 21m6.35mm – 14m
Unit & Piping Selection
Page 60
Example
Additional charge amount :
= ∑ Li* Gi
= (Piping Length for 15.88mm X Refrigerant Charge Amount)
+ (Piping Length for 12.7mm X Refrigerant Charge Amount)
+ (Piping Length for 9.52mm X Refrigerant Charge Amount)
+ (Piping Length for 6.35mm X Refrigerant Charge Amount)
= (10 X 180) + (25 x 120) + (21 x 80) + (14 x 50)
= 7180 g
Liquid tube diameter (mm) 6.35 9.52 12.7 15.88
Refrigerant charge amount (g/m)
50 80 120 180
Total Piping Length15.88mm – 10m 12.7mm – 25m9.52mm – 21m 6.35mm – 14m
Unit & Piping Selection
Page 62
Indoor Unit EXV Box ModelCCD 10/15CKD 10/15WMD 10/15 MEX-16-2SAP-B
CCD 20CKD 20CED20WMD 20 MEX-20-2SAP-BCCD 25CKD 25
CED 25/28WMD 25 MEX-20-3SAP-B
CKD 30/40/50CCD 30/40/50/60
CED 40/50/62
MEX-16-2SAP-A
MEX-20-3SAP-A
MEX-20-2SAP-A
MEX-25-3SAP-A
Electronic Expansion Valve
2 units
1 unit
1 unit
2 units
Unit & Piping Selection