01 mds introduction
TRANSCRIPT
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TECHNICAL TRAINING
2007
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Content
Introduction
System & Control
PCB Program Upgrade
Selection Software
Installation
Troubleshooting & Commissioning
Site Visit
Monitoring Software Operation & Demo Kit Introduction
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MDS INTRODUCTION
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Variable Capacity
Multiple Indoors
Centralized Air-conditioning system
What is a MDS?
Variable Refrigerant FlowSystem (VRF)
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High living standard : Demand higher comfort level
Anytime, Anywhere
Cooling load increase
Prolonged cooling period
Comfort but big energy eater
High energy cost & environmental concern
Facing dilemma
How can we achieve energy saving without
sacrificing comfort?
Why VRF system is developed?
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Solution : Individual Air Conditioning
Switch on/off freely
Suitable for random occupancy
Individual temperature setting and control
Comfort for everybody
Independent system
Capacity and Energy consumption change in parallel
Do not bother other unit
VRF System is developed!
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Digital Scroll
System
Copeland digital scroll compressor
InverterCompressor System
Compressor with inverter motor
Multiple
Compressor System
Multiple fixed speed compressor.
Can be same or different capacity
Type of VRF System
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DIGITAL SCROLL
TECHNOLOGY
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PWM Valve
Pulse Width Modulation
Discharge
PressureBalance Pipe
Suction
Digital Scroll Compressor
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Orbiting Scroll
(YellowFixed Scroll
(Brown
Digital Scroll Compressor
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1. Built based on Copeland Axial Compliance feature/principle
- Ensure two scrolls are loaded together with optimal force- Axial Compliance allow 1mm vertical movement
How Does Digital Scroll Compressor Works?
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2. Modulation Mechanism
Unloaded (0) - Zero Capacity
1.0 mm Scroll
Separation
Loaded (1) - Full Capacity
How Does Digital Scroll Compressor Works?
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PWM valve power off
PWM valve close
Fixed scroll movedownwards & operates as
per normal compressor Fixed scroll move in the
axial direction to theorbiting scroll until theyare very near (very smallamounts)
Loading
Loading
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PWM valve power on
PWM valve open
Discharge chamber
and suction pipesbecomes connected
Fixed scroll moveupward
Two scrolls separated
Unloading
Unloading
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3. Concept of Cycle Time
= Loaded State Time + Unloaded State Time
- Duration of these 2 times determine the capacity modulation
of compressor
Example:
In a 20 second cycle time, if the loaded time and unloaded
Time is 10 seconds respectively, the compressor modulation is
50%
How Does Digital Scroll Compressor Works?
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To View, Click on Slide Show
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Features Wide modulation range
Quick response
Precise modulation
Stable action Tested up to 40 million cycle,
equivalent to 30 years ofoperation
Electronic Expansion Valve
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High Pressure Ratio 2,000 Hours For Lubrication / High Temperature
High Load 2,000 Hours For High Temperature / Pressure
Start / Stop 520,000 Cycles For Vibration
Flooded Start 1,000 Cycles At 100 To 150% Charge Limit ForSlugging And Lubricant Migration
Defrost Flood back 2,000 Hours At 100% Charge Limit For LiquidSlugging
Sequence 200 On / Off Cycles At Each Window Corner 30Min / Cycle, Repeat Sequence 4 Times
Specific Tests Based On Field Data Recorder Input
Digital Solenoid Valve 40,000,000 Cycles
Compressor Reliability Test
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Product Range
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Cooling Heating
MDS030A/AR 8.5 9.5 Single Phase
MDS040A/AR 10.0 11.5 Single Phase
MDS050A/AR 12.5 13.5 Single / 3 Phase
MDS060A/AR 15.0 17.0 Single / 3 Phase
Capacity (kW)Power
SupplyModel Outlook
A SeriesMDS030~060A(AR)
MDS Product Range (Outdoor)
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Cooling Heating
MDS080B/BR 24.5 26.0
MDS100B/BR 28.0 30.0
MDS120B/BR 32.5 34.0
MDS150B/BR 40.0 43.0 1840 X 1290 X 840
MDS180B/BR 47.5 50.0
MDS200B/BR 50.0 53.0
MDS220B/BR 55.0 58.0
MDS240B/BR 65.0 68.0
MDS260B/BR 70.0 75.0 1840 X 2290 X 840
MDS280B/BR 75.0 80.0
MDS300B/BR 80.0 85.0
MDS320B/BR 85.0 92.0
Capacity (kW) DimensionModel Outlook
1840 X 990 X 840
1840 X 1990 X 840
1840 X 2590 X 840
B SeriesMDS080~300B(BR)
MDS Product Range (Outdoor)
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kBtu/h 8.5 9.6 12.3 19.1 22.2 30.7 38.2 47.8 56.0
kW 2.5 2.8 3.6 5.6 6.5 9.0 11.2 14.0 16.4
CCD-C
CKD-A
CKD-C
WMG-D
CED-C
CED-D
CED-E
Capacity
MDS Product Range (Indoor)
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Product Features
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Energy Saving
Digital Scroll system is 20% better in SEER compared
to normal inverter system
MDS Product Features
0
1
2
3
4
Digital
ScrollAverage
Japanese
InverterInverter
AC
IPLV
3.56 3.45
3.00
IPLVIntegrated Part Load Value (Measure Of Seasonal Efficiency)
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Digital Multi-System 10HP Test Data( As Per GB/T 188372002)
2
2.5
3
3.5
4
4.5
0 20 40 60 80 100
IPLV(C) = 3.56
IPLV(H) = 3.71
Test By China National Center For Quality Supervision And Test Of Electrical Appliances , June 2005
Capacity (%)
Cooling
Heating
COP (W/W)
MDS Product Features
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Cooling Mode IPLV C)=3.56
Heating Mode IPLV H)=3.71
MDS Product Features
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Energy saving
No inverter Conversion loss
MDS Product Features
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Excellent Electromagnetic Compatibility
MDS unit runs at a constant
speed throughout the operating
range, thus there is NEGLIGIBLEelectromagnetic interference.
This unique feature eliminates
the need for expensive
electromagnetic suppression
electronics required to ensureelectromagnetic compatibility.
19th
17th
13th
11st
5th
1 2 3 4 5Ampere
7th
Inverter EMC Regulation Digital Scroll System
MDS Product Features
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Simplicity = Reliability
MDS Product Features
Outdoor Board Power Supply IPMTypical Inverter Components
Power Module Capacitor Bank
MDS PCB Board
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Simple & Reliable
MDS systemInverter system
Lower Applied Cost
Better Reliability
Better Serviceability
MDS Product Features
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Capacity Range from 10% up to 100%
Stepless Control
Wide Capacity Range
MDS Product Features
MDS P d t F t
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Unloaded power consumption is only 10% of full loadpower
Capacity modulating range for Digital Scroll is 10%-
100%,
At low capacity (10%, 20%,30%,etc ), the compressordoes not need any hot-gas by-pass or on/off control
like multiple compressor system
Lower Power Consumption During Low Load Condition
MDS Product Features
MDS P d t F t
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-20 -10 0 10 20 30 40
InadequateHeating
InadequateCooling
Ambient Temperature (oC)
Heating Cooling
Compressor Output
Compressor
Cycling
(Inefficient)
Fixed Speed Systems Do Not Match Load Requirements
Comfortable Environment Control
MDS Product Features
MDS P d t F t
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MDS constantly matches Supply & Demand
Comfortable Environment Control
MDS Product Features
-20 -10 0 10 20 30 40
Capacity Matches Load
Energy Savings
High Comfort
Ambient Temperature (oC)
Compressor Output
Digital Scroll 10% - 100%
Heating Cooling
MDS P d t F t
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22
25
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19:19:12 19:26:24 19:33:36 19:40:48 19:48:00 19:55:12 20:02:24 20:09:36 20:16:48 20:24:00
Time
Room
AirTemp.
(C)
Bedroom OnDining Room OffLiving Room On
Bedroom
Set Temp 25C
Living Room
Set Temp 22C
Tight Temperature ControlIndividual EXV
MDS Product Features
MDS P d t F t
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Cost Saving
Based on a villa with 200m2of six rooms, 6 sets of (2hp) air-
conditioners are required.
MDS Product Features
MDS P d t F t
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Simultaneous Operating Factor (SOF)
4:00 8:00 12:00 16:00 20:00 24:00 4:00
Living Room2
Host Bedroom
Bedroom
Maximum 10 HP requirement
Time
Bedroom
Living Room1
Workroom
Cost Saving
MDS Product Features
MDS P d t F t
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Only 1 outdoor of MDS
with 6 indoors unit.
Less equipment cost
Better space utilization
Cost Saving
MDS Product Features
MDS P d t F t
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Long Piping Application
Maximum equivalentlength between outdoor
unit and indoor unit is 150
meters. (Longest branch)
The maximum heightbetween outdoor unit and
the lowest indoor unit is
50 meters.
The maximum height
between highest and
lowest indoor units is 15
meters
MDS Product Features
MDS Prod ct Feat res
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Flexible
One outdoor unit can connect up to maximum 16 units (MDS-A)indoor units and 48 units (MDS-B) indoor
Indoor unit has wide range of cap. max. up to 120% of outdoor
unit.
MDS Product Features
MDS Product Features
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Principle of Digital Compressor
MDS Product Features
MDS Product Features
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Qty HP Qty HP Qty HP
MDS030A 1 3MDS040A 1 4
MDS050A 1 5
MDS060A 1 6
MDS080B 1 4 1 4
MDS100B 1 5 1 5
MDS120B 1 6 1 6
MDS150B 1 5 2 5
MDS180B 1 6 2 6
MDS200B 1 5 3 5
MDS220B 1 6 3 5
MDS240B 1 6 3 6
MDS260B 1 6 1 6 3 5 MDS120B(R)M + MDS150B(R)S
MDS280B 1 5 2 5 3 5 MDS130B(R)M + MDS150B(R)S
MDS300B 1 5 2 5 3 5 MDS150B(R)M + MDS150B(R)S
MDS320B 1 6 1 6 4 5 MDS160B(R)M + MDS160B(R)S
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Digital CompressorModel Remark
Fixed Compressor
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Accumulated Running Time for fixed scroll compressor
MDS Product Features
MDS Product Features
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Compact Design
Outdoor unit has compact design. The small structureoccupy less space and is easy to move.
MDS Product Features
MDS Product Features
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Better Sound Quality
New fan blade design offer smooth air distribution thusreduces turbulent noise significantly.
Night Mode Outdoor unit will operate at lower fan
speed according to ambient temperature
Optional high static fan of 50Pa is available. (For short
ducting)
MDS Product Features
MDS Product Features
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Easier Oil Return
During the unloaded state, since there is no mass velocity ofrefrigerant, the oil does not leave the compressor.
So during a period of low modulation, when the unloaded time
is longer, very little oil leaves the compressor
Build in oil separator for MDS outdoor models
Other Features
Self Diagnosis for Outdoor and Indoor model. A set of error
codes is available.
Simple wiring to connect the outdoor and indoor model. Only a
twisted part of wire is required to link up the indoor and
outdoor.
MDS Product Features
MDS Product Features
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Testing Condition
Cooling - 27C DB / 19C WB Indoor and 35C DB / 24C WB
Heating - 20C DB / 15C WB Indoor and 7C DB / 6C WB
MDS Product Features
MDS Product Features
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Various Types of Controllers
Wireless HandsetWired Handsetwith wireless option
G11G7 SLM
for MDSAC5300
G12G8
MDS Product Features
MDS Product Features
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Central Control
MDS can be network up to 32 outdoor units Provision for system of : 32 x 48 units = 1536 units
MDS Product Features
MDS Product Features
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Status Monitoring Software
Control and monitor all indoors and outdoors
Specific units / grouping control
Scheduling
Self-diagnosis / Alarming
MDS Product Features
MDS Product Features
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Unit Selection Software
MDS Product Features
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Refrigerant Piping Connection
Refnet Joint & Distributors
Allow refrigerant to branch out
from the main pipe line
Factory supplied as kit
Selection of refnet joint &distributors base on the
downstream of indoor capacity
Reduce installation cost and time
MDS Product Features
MDS Product Features
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EXV Box
Electronic Expansion Valve Box
MDS Product Features
http://localhost/var/www/apps/conversion/tmp/scratch_1//192.168.16.117/mds240br%E6%95%B4%E6%94%B9/AIRCONDITIONER/TRAINING-PRODUCT/MDS/oversea/vrvII%20(functions).ppthttp://localhost/var/www/apps/conversion/tmp/scratch_1//192.168.16.117/mds240br%E6%95%B4%E6%94%B9/AIRCONDITIONER/TRAINING-PRODUCT/MDS/oversea/vrvII%20(functions).ppthttp://localhost/var/www/apps/conversion/tmp/scratch_1//192.168.16.117/mds240br%E6%95%B4%E6%94%B9/AIRCONDITIONER/TRAINING-PRODUCT/MDS/oversea/vrvII%20(functions).ppt -
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MDS App l icat ion
MDS Application
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MDS Application
Consideration for using ADS Location for outdoor is limited.
MDS can be used due to the ability to couple multiple indoors
with only 1 outdoor. Better space utilization.
Various type of indoor unit with separate temperature
requirementMDS system can be couple with various type of indoors.
Each indoor can be design to supply to a specific area only
and the temperature setting is base on individual indoor
setting.
Heat load of the same air-conditioned area varies
MDS is able to match the indoor load requirement with its part
loading capability.
MDS Application
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MDS Application
Consideration for using MDS
Centralized Control
MDS outdoors and indoors can be linked together and control
using the MDS Control & Monitoring Software.
The software can also perform scheduling of the indoor units
base on the operating duration.
Places that require low or no EMC interference
The MDS modulation is control by mechanical parts. No
change in power supply (frequency or current), thus no EMC
interference.
MDS Application
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MDS Application
Consideration for using MDS
Building Type: Apartment / Bungalow
Building Type: Exhibition Hall
Temperature setting varies base on
different user
Outdoor location is limited
Indoor Capacity base on crowd
Centralized Control required.
MDS Application
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Building Type: Offices / Restaurant
Scheduling base on office hours /
peak hours as load determine by
crowd. Building exposed to sunlight
changes, causing load requirement
changes.
Required both centralized control
and individual temperature setting
EMC interference may
Consideration for using MDS
MDS Application
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Benef i ts o f MDS
Benefits of MDS
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Benefits of MDS
To Property Owner
Economical
Supply match indoor demand
Short Installation Time
Allow floor-to-floor installation.
High Adaptability
Various indoors models and long piping length.
Better Space Utilization
Less equipment is required. More space will be available
for owner to rent out.
Benefits of MDS
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To consultant and building designer
Flexibility in designing50 meters height - 15-story building.
15 meters between highest to the lowest indoors - 5
stories
Floor by Floor installation
50Pa ESP fan allow installation of short ducting.
Benefits of MDS
Benefits of MDS
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To consultant and building designer
Easy InstallationLess equipment.
Smaller and lighter piping.
A set of twisted pair wired.
Refnet joints
The refnet joints (with insulation) reduce the amount of
work involved in installation.
Benefits of MDS
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MDS versus o ther
centralized aircond it ion ing system
Understand MDS System
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Features of MDS
Energy efficient
Tight control with high comfort
Centralized air conditioning with zoning
capabilities
y
MDS competes natu ral ly
w i th ch i llers
What does MDS usually compete with?
Understand MDS System
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Can MDS replace Chillers?
Depends on application Process cooling
Clean room application (more than 2 parameters
to control)
How to introduce a MDS system?
Similar like a chiller system except that it usesrefrigerant rather than water, connected to ducted
and ductless fan coil unit easily.
y
MDS versus Chilled Water System
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Outline of the Systems
MDS versus Chilled Water System
Pump
Pump
Coolingtower
Water piping
AHUFCU FCU
Forcooling
Forheating
2 heat sourcesManaged by
engineer
Complicated
Inefficient partload operation
Outdoorunit
indoorunit
Refrigerant piping
Space-conscious
design
Simple system
Energy efficient
Individual controlRemotecontroller
Simple Operation
hiller M S
MDS versus Chilled Water System
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Central A/C System
System operate regardless of
occupying condition, only base
on time schedule.
MDS System
System operate base on
occupying condition as well
as time schedule
MDS versus Chilled Water System
Operating Condition
MDS versus Chilled Water System
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CHILLER SYSTEM
MDS SYSTEM
2 -off plant & pumps Standby not required.
P P
$$$$$
No standby equipment is necessary
MDS versus Chilled Water System
MDS versus Chilled Water System
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MDS SYSTEM
Lighter structural requirements
Lower height
Lower cost building
CHILLER SYSTEM
P P$$$$$
$$$$$
Lower building cost
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Job Reference
Prestige Job Reference
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Wei Xing Software Park, ChinaCommercial SectorOutdoor Quantity: 174 units
Indoor Type: Ceiling Concealed, and Ceiling Convertible
Indoor Quantity: 1151 units
Total Capacity: 7000 kW
g
Prestige Job Reference
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ShenZhen XiYuanOutdoor Quantity: 50 units
Indoor Type: Ceiling
Concealed
Indoor Quantity: 130 units
Total Capacity: 800 kW
g
Prestige Job Reference
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Chendu Tian Fu
Software ParkOutdoor Quantity: 69 units
Indoor Type: Ceiling Concealed
Indoor Quantity: 937 units
Total Capacity: 5800 kW
g
Prestige Job Reference
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Oakwood Premier Cozmo, IndonesiaResidential Sector
Outdoor Quantity: 22 units
Indoor Type: Ceiling Concealed
Indoor Quantity: 108 units
Total Capacity: 570 kW
g
Prestige Job Reference
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Poh Teck Tung, ThailandCommercial SectorOutdoor Quantity: 7 units
Indoor Type: Ceiling Concealed
Indoor Quantity: 42 units
Total Capacity: 433 kW
g
Prestige Job Reference
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Zion Church, SingaporeCommercial SectorOutdoor Quantity: 13 units
Indoor Type: Ceiling Concealed, Ceiling Convertible and Ceiling Cassette
Indoor Quantity: 48 units
Total Capacity: 384 kW
g
Prestige Job Reference
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DaTang Electrial Power
g
Prestige Job Reference in China
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Residential Area
TianJin BanJing Bay
Prestige Job Reference
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Office
GuangZhou Electric Power Institute
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Thank You