Chillers Centrifugal Rotary
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Transcript of Chillers Centrifugal Rotary
7/28/2019 Chillers Centrifugal Rotary
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© American Standard Inc. 2000 European training Center 1
An Am erican Standard Company
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© American Standard Inc. 2000 European training Center 2
Safety: Tip
Purpose: Impart a basic Service course on Chillers, Maintenance andthe Safety Hazards associated.
Agenda: As described in next slide.
Code of Conduct: Active participation; laptops down; turn off cellphones; respect the norms of good listener/speaker.
Expectations: Interest to know and learn about presented theme.
Ability to understand safety issues associated withmaintenance activities.
Roles: Facilitator –Natalie Narce and participants.
SPACER
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© American Standard Inc. 2000 European training Center 3
Agenda
1. Product Overview -30 min.
2. Centrifugal/Rotary Basics -30 min.
3. CH530 Control System -20 min.
4. Maintenance and Service requirements – 30 min.
5. Safety Hazards
–
45 min
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Section 1
© American Standard Inc. 2000 European training Center
Chillers: Centrifugal / Rotary
Product Overview
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5
CVG/HF Liquid Cooled Centrifugal
Completely New
Design
More Efficient Than
Past Designs -- .58to .65 kW per Ton
CH530 Micro
Processor
Electronic Adaptive
Control
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© American Standard Inc. 2000 European training Center 6
RTAC Unit Design
6
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© American Standard Inc. 2000 European training Center 7
CVG/HF Product Overview
Starter
Panel
High Lift
Unloading
Line
ControlPanel
Falling Film
Evaporator
Liquid Line
Oil Pump/Motor
Cover Plate
Oil Filter
Shear
Plate
Condenser
Compressor
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© American Standard Inc. 2000 European training Center 8
CVG/HF Product Overview
Motor Cooling Filter
Condenser
Brazed plate
Oil Cooler
Liquid Lines
Economizer
Discharge Line
Guide
Vane
Actuator
SuctionLine
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© American Standard Inc. 2000 European training Center 9
CVG/HF Refrigerant Circuit
Condenser
Economizer
Evaporator
Compressor
High LiftUnloader Valve
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© American Standard Inc. 2000 European training Center 11
RTAC Refrigeration Cycle
1
Condenser
Evaporator
Compressor Oil Separator
LVS
EXV
Sub-cooler
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© American Standard Inc. 2000 European training Center 15
CVG/HF Compressor
Suction
Cover
Motor
Stator
Motor
Rotor
Motor
Terminal
•2 stages
•2 IGV sets linked together
•10,440 RPM
DischargeVolute
Motor
Shaft
Motor
Housing
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© American Standard Inc. 2000 European training Center 16
Oil Circuit Flow
Evaporator
Compressor
Oil Sump
Oil Pump
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© American Standard Inc. 2000 European training Center 17
Oil Cooling Flow (Thermosiphon)
Condenser
Warm Oil
C o o l O
i l
Cool Liquid Refrigerant
Warm Vapor Refrigerant
Oil Cooler
Oil Sump
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© American Standard Inc. 2000 European training Center 18
Condenser Flow
R134a Vapor
R134a Liquid
Tube: Wolverine Turbo C2
Anti - Vortex Baffle
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© American Standard Inc. 2000 European training Center 19
Economizer Flow
R134a Vapor
R134a Liquid
Anti - Vortex Baffle
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© American Standard Inc. 2000 European training Center 20
Evaporator Flow
R134a Vapor
R134a Liquid Refrigerant 99%
Oil 1%
Tube: Wolverine Turbo B3
Heat In
Cool
Out
OUT IN
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© American Standard Inc. 2000 European training Center 21
Energy Efficient Tubes
Advanced Heat Transfer Surfaces Finned and Grooved
Condenser Tubes -- IECU 1.00
Inch or 25.4 mm and TECU .75
Inch or 19.0 mm
Evaporator Tubes -- Same
Diameter as Condenser Tubes
Choice of Standard or High
Efficiency Tubes in 3 shell sizes- 500-700-1,000 Tons -- 1,750 kw,
2,450 kw, 3,500 kw
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© American Standard Inc. 2000 European training Center 22
Tube Design - Condenser/
Evaporator
C2
B2
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© American Standard Inc. 2000 European training Center 23
Intelligent Control Module: CH530
Provides over 120 Diagnostics
and Operational points
Integral Report
Capacity to send information
Continual registration every 5
sec. via modem
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© American Standard Inc. 2000 European training Center 25
Compressor Reliability - Low
Maintenance
Semi- Hermetic Motor
Refrigerant Liquid Cooled
No Shaft Seals / Couplings
Labyrinth Gas Seals
Ball Bearings and Directional
Babbitt Journal Bearings -
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© American Standard Inc. 2000 European training Center 26
Service / Low Maintenance
Oil Pump discharge: R134a + Solest 68 oil
Oil Pump filter:
4 microns
Designed for life
Isolating valves
Oil Heaters: In leak proof well
Motor cooling filter:
Designed for life
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© American Standard Inc. 2000 European training Center 29
CVGF Vs CVGE
CVG/HF 500 TECU Impeller speed:10,440 RPM
1st and 2nd stage moveable
Oil sump: integral with
comp. Ref charge: 748 Pounds or
340 kg of R-134a
Oil: 14.8 Gal. or 56 liters
2 pass condenser Falling film evaporator
CVGE 045 Long
Impeller speed:12,250 RPM
First stage moveable
(CCGA)
Separate oil sump Ref. charge: 1720 Pounds or
780 kg of R-134a
Oil: 14.8 Gal. or 56 liters
1 pass condenser Flooded evaporator