SCROLL CHILLERS

Lightstream Scroll

Packaged air-cooled chillers featuring scroll compressors and microchannel condensing coils. Best suited for air conditioning and process cooling applications

200-900kW

PRODUCT OVERVIEW

Scroll chillers in Class A energy efficiency

Exceptionally efficient air-cooled scroll chillers offering a wide range of cooling capacities and options, including partial and total heat recovery.

 

Lightstream Scroll chiller family combines cost effective and quiet scroll compressors and the latest axial fan technology applied in modular V-form coil design.

 

Microchannel heat exchangers significantly increase efficiency, whilst refrigerant charge is relatively low.

Scroll compressors

MULTIPLE SCROLL COMPRESSORS TECHNOLOGY
MULTIPLE REFRIGERANT CIRCUITS

Lighstream Scroll chillers incorporate scroll compressors in tandem configuration, which offer part-load efficiency and increased load-matching capabilities, together with quiet operation and diagnostic capabilities, and enable two-stage capacity by running compressors individually or simultaneously.

 

Lightstream's refrigerant side consists of one to four gas circuits - depending on unit capacity, each equipped with electronic expansion valve (EEV) to ensure optimum system efficiency.

 

Depending on requirements, customers can choose from partial or total heat recovery features installed on each gas circuit.

Evaporators

BRAZED PLATE HEAT EXCHANGERS

Lighstream Scroll chillers feature either brazed plate or shell-and-tube heat exchangers, depending on unit capacity and end-customer preference.

 

Brazed plate heat exchangers provide optimal heat transfer efficiency, pressure resistance and longest possible service lifetime, guaranteed by their advanced design.

SHELL-AND-TUBE HEAT EXCHANGERS

Shell-and-tube heat exchangers with an innovative refrigerant distributor and optimized plastic baffles are designed to improve the waterside heat transfer performance.

 

The tubes have a specific inner-grooved pattern to maximize the heat transfer coefficient and to limit the pressure drop negative effects.

Evaporation control

ELECTRONIC EXPANSION VALVES

Accurate control of superheat with the Lightstream scroll chiller operating at part load achieved with electronic expansion valves. Fitting EEV allows the reduction of power consumption by up to 30% by controlling refrigerant flow at reduced head pressures.

 

The EEV used in Lightstream Scroll chillers are new generation valves designed for precise liquid injection into an evaporator and include a balanced cage and slider assembly operated by direct driven motor technology. This ensures solenoid-tight shut-off in both flow directions,  providing a smooth operation of the system.

The valve incorporates a powerful bi-polar motor which precisely controls flow regulation.

Microchannel condensers

HIGHER CORROSION PROTECTION
LOWER CONDENSING TEMPERATURES
BETTER HEAT TRANSFER

All-aluminium microchannel condensing coils used in the Lighstream Scroll chiller family permit numerous benefits, including low airside pressure drops, higher heat transfer rate, and closer approach temperatures.

 

The result is up to 40% higher energy efficiency in comparison to fin/tube coil design. Smaller surface area, thin coil design, up to 50% less weight, and less refrigerant charge translates to lower cost.

 

Due to the all-aluminium construction, microchannel condensing coils are subject to significantly less galvanic corrosion than the traditional fin/tube design, in that there are no dissimilar metals.

High-efficient fans

EC-TYPE FANS WITH REDUCED POWER CONSUMPTION

Lighstream Scroll’s new generation fan system not only reduces power consumption by up to 30% while managing the extraordinarily high volume flows but it also works at significantly reduced operating noise levels.

 

The smart fan system includes unique fans with the bionic wing concept, the most advanced EC motor technology, and multifunctional air diffusers, resulting in economic efficiency for customers.

 

EC motor technology not only produces savings in full-load operation - it is exactly when operating under partial load that EC motors lose much less of their efficiency.

A vast range of Lightstream Scroll chiller models and options provides flexibility tailor made to customer requirements permitting truly efficient cooling solutions for every application in any climate zone.


In a 24/7 world, ensuring facilities stay up and running is critical, therefore special attention has been paid to control and monitor functionality, and ensuring operational reliability and ease of maintenance.

PRODUCT SPECIFICATIONS

Cooling capacity

200-900kW

EER

Up to 3.20

Compressors

Scroll

Refrigerant

R410a

Condensers

MCHE

Evaporators

BPHE/S&T

Evaporation control

EEV

Fan type

AC/EC

Heat recovery

Available

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Latest generation of scroll chillers offers an extreme efficiency level for a broad spectre of air conditioning and process applications. The range features evaporative pre-cooling, microchannel condensing coils, and compact evaporators​

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Kaltra Innovativtechnik GmbH


Max-Reger-Str. 44
90571 Schwaig
Germany


Email: info@kaltra.de
+49(0)911 715 32021

VAT: DE300943964

Kaltra is a customer-focused developer and supplier of reliable, energy efficient thermal management equipment and solutions.

 

From the professionalism of our research and development engineers to the wide experience of our service team, we are dedicated to delivering you the best service possible.

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