Kaltra - Model 450-1200kW -Lightstream Free Cooling Chillers
Highly efficient free cooling chillers equipped with frequency-controlled screw compressors and adopted microchannel technology for free coolinhttps://www.kaltra.com/lightstream-freecool and condensing coils.
The Lightstream Freecool is a family of free cooling chillers equipped with frequency-controlled screw compressors and adopted microchannel technology for freecooling and condensing coils, which result in outstanding seasonal energy efficiency in a wide range of workloads and operating conditions.
Lightstream Freecool has been designed with attention to every detail to maximize performance and reliability and perfectly fulfilling requirements of mission-critical applications, industrial, commercial applications, and in every area where efficiency and reliable continuous cooling are the key factors.
Application flexibility is achieved through a wide variety of optional components and accessories and control software with advanced functionality, including coordinated operation under sequence management software.
- Cooling capacity 600-1200kW
- EER Up to 4.10
- ESEER Up to 5.95
- Compressors Inverter screw
- Refrigerant R134a/R513a/R1234ze
- Condensers MCHE
- Evaporators Flooded
- Free cooling coils MCHE
- Fan type EC
Lightstream’s screw compressors with frequency-controlled capacity adjustment are optimized for maximum efficiency in air-cooled chillers. These compressors are especially suitable for systems that frequently operate under part-load and feature an integrated frequency inverter which controls the motor speed – enabling infinite capacity control for customers and optimal energy use in applications.
These compressors achieve impressively high full-load efficiency and significantly improved ESEER/IPLV and SCOP values: with an average ESEER value above 5.5, Lighstream Screw chillers are setting new benchmarks for air-cooled chillers in the industry.
The compressor monitors its own application limits and communicates via Modbus with the master chiller controls. The integrated data log can be used at any time to analyze operation over the running time and optimize the system settings. The integrated soft-start feature facilitates the steady increase of the in-rush current without voltage spikes.
Compressors are also optimized for the temperature profile specified by the Ecodesign Directive for water chillers (European Chiller Energy Efficiency Standard EU 2016/2281 Tier 1, effective from January 2018).
Microchannel technology adopted in Lighstream Freecool design for both condenser and freecooling coils gives several advantages resulting in a 40% higher heat transfer in comparison to finned tube coil designs.
- Higher heat transfer rates enable lower condensing temperatures and result in energy savings on compressors
- Higher performance of free cooling coils, resulting in improved free cooling opportunities
- Low air resistance leads to reduced fan power consumption and lower noise output
- High corrosion resistance of all-aluminum heat exchanger construction increases the service life of the chillers
- Straight airflow path results in less fouling and clogging of heat exchangers
- Lower refrigerant charge, up to 50%
- Reduced size and weight which translates to lower costs of the system
Optionally available protective coatings enable trouble-free condenser operation in marine atmospheres, high-polluted industrial zones, and other chemically active areas.
- Capacity [kW] : 450 … 1200
- Design : FREE COOLING
- Compressors : SCREW
- Refrigerant : R134A/R513A/R1234ZE
- Energy efficiency (EER) : UP TO 4.10
- Seasonal efficiency (ESEER) : UP TO 5.95
- Fan motors : EC
- Condensers : MCHE
- Free cooling coils : MCHE
- Evaporators : FLOODED S&T
- Evaporation control : EEV
- Refrigeration circuits : DOUBLE
- Warranty : 3 YEARS