Trane ctv-prc007-en manual Refrigeration, CenTraVac Chiller Operating Cycle

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Features and

Refrigeration

Benefits

Cycle

 

 

 

 

The CenTraVac™ Chiller Operating Cycle

Design Simplicity

Impellers are keyed directly to the motor shaft for high reliability and performance and low life-cycle costs.

Reliable Motor Cooling

The motor is engulfed in liquid refrigerant to provide efficient, complete cooling at all load conditions. This system is reliable and easy to maintain.

Fixed Orifice Flow Control

For proper refrigerant flow control at all load conditions, the CenTraVac design incorporates the Trane patented fixed orifice system. It eliminates float valves, thermal expansion valves and other moving parts. Since there are no moving parts, reliability is increased.

Quiet Operation

With only one moving component — the rotor and impeller assembly — the Trane low speed, direct drive design operates exceptionally quietly. The smoothly rotating CenTraVac compressor is inherently quieter than other compressor types. Typical CenTraVac chiller sound measurements are among the quietest in the industry. Trane can guarantee sound levels with factory testing and measurements in accordance with

ARI standard 575.

The Reliability Standard

Just as a multi-stage turbine is more efficient than a single stage turbine, the CenTraVac multi-stage compressors are more efficient and reliable than single- stage designs.

Direct Drive Design — No Gear Losses The direct drive compressor operates without speed increasing gears, thus eliminating gear energy losses. Compressors using gears suffer mesh losses and extra bearing losses in the range of three to five percent at full load. Since these losses are fairly constant over the load range, increasingly larger percentage losses result as load decreases.

Multiple Stages of Compression The compressor operates more efficiently over a wide range of capacities, virtually eliminating the need for energy wasting hot gas bypass as typically found on single stage chillers.

The radial component of velocity determines the ability of the chiller to resist interruption of smooth refrigerant flow when operating at light loads and with high condensing temperatures. This interruption in flow and unstable operation, called “surge” is avoided with the two-stage design.

Inlet Guide Vanes

Part load performance is further improved through use of moveable designed variable inlet guide vanes. Inlet guide vanes improve performance by throttling refrigerant gas flow to exactly meet part load requirements and by prerotating refrigerant gas for optimum entry into the impeller. Prerotation of refrigerant gas minimizes turbulence and increases efficiency.

Two-Stage Economizer

The CVHE/CVHG CenTraVac chiller has a two-stage economizer — providing up to seven percent greater efficiency than designs with no economizer. Since the CVHE/CVHG uses three impellers, it is possible to flash refrigerant gas at two intermediate pressures between the evaporator and condenser pressures, significantly increasing chiller efficiency. This improvement in efficiency is not possible in single-stage chillers since all compression is done by one impeller.

Single Stage Economizer

The CVHF CenTraVac chiller has a single- stage economizer — providing up to 41/2 percent greater efficiency than designs with no economizer.

Since the CVHF CenTraVac uses two impellers, it is possible to flash refrigerant gas at an intermediate pressure between the evaporator and condenser pressures, significantly increasing chiller efficiency. This improvement in efficiency is not possible in single-stage chillers since all compression is done by one impeller.

CTV-PRC007-EN

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Contents CenTraVac Liquid Chillers Emissions Chiller IntroductionWorld’s Most Efficient LowestContents Tradition of Innovation Trane HermeticCentrifugal Water ChillersLhcv CenTraVac Modular Chiller system IntroductionLow Pressure FeaturesBenefits AttributesCapabilities include ControlPanel Operator Control PanelBenefits Components FeaturesStandard Features and and Optional Benefits FeaturesStandard Features Optional FeaturesFactory Features and Performance Benefits TestingFactory Testing for Assured Performance CenTraVac Chiller Operating Cycle RefrigerationCycle Two-Stage CenTraVac P-H Diagram Starter UnitOptions Unit MountedOperation FeaturesReliability Integral Bypass Contactors Available options includeLarge number of part-load operating hours annually AdaptiveFrequency Drives BenefitsHigh kW Charges Condenser water temperature relief of chilled water resetEase of Operation Ease of InstallationUnit Free CoolingFigure O-5 Compressor Operation Schematic Auxiliary Condenser System Auxiliary Options CondenserControls SystemAuxiliary CondenserIce Storage SystemSystem Options Heat RecoverySystem Design Considerations Heat RecoveryCont Simultaneous Heating and CoolingChilled Water ResetChilled Water Reset Chilled water For Applications Requiring Tons 60 Hz Choose Lhcv ApplicationConsiderations Electrical Information Condenser Water LimitationsSelection Procedure Evaporator and Condenser Data Tables Roughing-in DimensionsPart Load Performance Flow Rates PerformanceData EvaporatorMinimum/Maximum Condenser Flow Rates GPM Jobsite Connections Supply and Motor Lead Wiring and ConnectionsShipment and Assembly Systems Performance ControlsAdvanced Controls Building Automation and Chiller Plant Control Controls ControlChiller Plant Machine Protections Functions Controls ProtectionsControl Functions Functions Controls Diagnostics Modules ControlsModules/Sequence OperationUnit is Running Capacity Limited by High Current Hz Compressors WeightsCvhg English Units DimensionsPhysical SI Units ML &LL 10630 3867 4080 4724 1327 4578 2908 2419 2632 Waterbox Physical Connection Dimensions ArrangementWaterbox Lengths English Units Physical DimensionsWaterbox Lengths Metric Units Evaporator Mechanical SpecificationCompressor Unit Control Panel Condenser/Heat Recovery CondenserEconomizer Purge SystemInsulation Isolation PadsRefrigerant and Oil Charge Thermometer Wells and Sight GlassesInput Line Reactor Option AFD Design FeaturesTrane Adaptive Frequency Drive AFD Environmental ratingsTrane Company is a participant in the Green Seal Program

ctv-prc007-en specifications

The Trane CTV-PRC007-EN is an advanced air conditioning unit that epitomizes efficiency and reliability in temperature control. Designed for commercial and industrial applications, this unit stands out with a multitude of features aimed at enhancing performance, energy savings, and sustainability.

One of the key characteristics of the CTV-PRC007-EN is its high cooling and heating capacities, allowing it to cater to a variety of environments. The unit utilizes a scroll compressor, known for its energy efficiency and durable design, which contributes to substantial energy savings over time. The inclusion of variable speed technology further optimizes energy use by adjusting to the specific cooling or heating demands of the space.

Equipped with Trane’s proprietary Sintesis technology, the CTV-PRC007-EN offers superior temperature control while minimizing noise levels. This feature makes it ideal for settings where quiet operation is essential, such as offices, hotels, and conference rooms. The unit’s sound-dampening design reduces operational noise, ensuring a comfortable environment for occupants.

Another significant advantage of the CTV-PRC007-EN is its advanced control system. The integration of Smart Temperature Management allows for precise monitoring and adjustment, enhancing the overall user experience. Additionally, the system is compatible with various building management systems, enabling remote monitoring and control, which can significantly reduce operational costs and improve efficiency.

The CTV-PRC007-EN also embraces eco-friendly refrigerants, aligning with global sustainability goals. By using refrigerants with low global warming potential, Trane demonstrates its commitment to reducing environmental impact while maintaining high performance.

Maintenance is straightforward with the CTV-PRC007-EN. The unit's robust design includes accessible components that simplify servicing, helping to minimize downtime and operational costs. It comes with a comprehensive warranty, underscoring Trane’s confidence in the durability and reliability of its products.

In conclusion, the Trane CTV-PRC007-EN stands as a testament to cutting-edge technology in HVAC solutions. With its energy efficiency, advanced control systems, quiet operation, and eco-friendly features, it is an ideal choice for businesses seeking effective climate control solutions that do not compromise on sustainability or performance.
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