branch joint selection
Post on 01-Jan-2016
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Engineered for flexibility and performance.
Branch Joint Selection
室外机
纯粹由分支接头的连接
控制器
分支接头
室外机Outdoor unit
Outdoor unit
Branch joint
Connection by the branch joint completely
Controller
Connection type of branch joint/ branch header:
Engineered for flexibility and performance.
After the branch header no more branching is permitted
Outdoor unit
Branch header
Mistake
MistakeMistake
Indoor unit
Controller
Engineered for flexibility and performance.
Selection of branch joint / header for MDS
Model
Branch joint(2 branch)
MDS-Y1MDS-Y2MDS-Y3MDS-Y4MDS-Y5
Branch header(4 branch)
MDS-C1MDS-C2MDS-C3
Engineered for flexibility and performance.
Diameter & thickness requirement for refrigerant copper pipe
A-series
Engineered for flexibility and performance.
B-series
Diameter & thickness requirement for refrigerant copper pipe
Engineered for flexibility and performance.
Piping selection & unit selectionPiping selection & unit selection
Cooling cap. factor
Engineered for flexibility and performance.
Piping selection & unit selectionPiping selection & unit selection
Heating cap. factor
Engineered for flexibility and performance.
MDS100AR AMCC020 MCK020
MCC015 MCK020 MCC010
B C
D E
MCK020
1. Selection of diameter for piping
2. Selection of branch
Selection step:
Example
Engineered for flexibility and performance.
1) Main pipe & terminal pipe dia. (Equivalent length<90m)
Main pipe : φ15.88 / φ28.6
Terminal pipe : (Same as indoor units )2) Calculate the downsteam cap.
Of point A
A-B-C:
A-D-E:
17.4 KW
11.8 KW
3) Select the dia. from the table
A-B Dia:A-D Dia :
Φ12.7 / φ25.4
Φ9.52 / φ19.05
4) Same as item 3
B-C Dia:D-E Dia:
Φ9.52 / φ19.05
Φ9.52 / φ15.88
1. Piping dia selection
2. Branch selection
Selection step:
Engineered for flexibility and performance.
1) Select the branch of point A
A ( Liquid ): MDS-Y2A ( Gas ): MDS-Y1
2) Same as item 1
B ( Liquid ): MDS-Y2
B ( Gas ): MDS-Y1
C ( Liquid ): MDS-Y2
C ( Gas ): MDS-Y4
D ( Liquid ): MDS-Y2
D ( Gas ): MDS-Y4
E ( Liquid ): MDS-Y2
E ( Gas ): MDS-Y2
1. Selection of diameter for piping
2. Selection of branch
Selection step:
Engineered for flexibility and performance.
Additional Charge of Refrigerant
G=∑ Li* Gi
Li
Formula:
The each section of liquid tube length in all ( m )
Gi Charge amount per length ( g/m )
Using liquid tube length to calculate required refrigerant → Add in refrigerant
G Refrigerant charge amount
Engineered for flexibility and performance.
MDS100AR A
MCC020 MCK020
MCC015 MCK020 MCC010
B C
D E
MCK020
60m(5/8)
6m(1/2) 8m 8m
8m8m 8m
7m(1/4)7m 7m(1/4)
8m
Complete selection of pipe & branch
Additional Charge of Refrigerant
Engineered for flexibility and performance.
Additional Charge of Refrigerant
G=180*60+120*6+80*55+50*14
Additional charge amount GAdditional charge amount G ::
=6900 ( g)
Engineered for flexibility and performance.
MDS unit selection software
McQuay MDS unit selection software
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