Lightstream Scroll

Lightstream Scroll

Packaged air-cooled chillers featuring scroll compressor technology, multiple refrigeration circuits, and microchannel condensing coils, available with refrigerant R410a

200 – 900 kW

Applications: Air conditioning • Process cooling • Refrigeration • Commercial

Category:

CHILLERS IN CLASS A ENERGY EFFICIENCY

Efficient air-cooled scroll chillers offering a wide range of cooling capacities and options, including partial and total heat recovery, integrated hydronic pump packages, and more.

Lightstream Scroll chiller family combines cost-effective, quiet in operation scroll compressors and the latest axial fan technology applied in modular V-form coil design. Microchannel heat exchangers significantly increase efficiency, whilst the refrigerant charge is relatively low.

With advanced HVAC technologies found in its design, the Lightstream Scroll chiller provides stable cooling and costs less to purchase and operate compared to other chillers in its class.

Scroll compressor

SCROLL COMPRESSORS

MULTI-COMPRESSOR, MULTI-CIRCUIT TECHNOLOGY

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 head pressure control. Depending on requirements, customers can choose from partial or total heat recovery features.

Brazed plate heat exchanger

EVAPORATORS

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

Brazed plate heat exchangers provide optimal heat transfer efficiency, pressure resistance and longest possible service lifetime, guaranteed by their advanced design. Low internal volume – compared to other types of heat exchangers – permits refrigerant charge reduction to a minimum.

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. This type of evaporators is recommended for optimum efficiency.

Evaporation Control

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.

Electronic expansion valves combined with intelligent valve controllers make up an integrated control system that optimizes evaporator operation and obtains high energy savings.

Axial fan

HIGH-EFFICIENT FANS

AXIAL FANS WITH REDUCED POWER CONSUMPTION

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

The smart fan system includes axial fans with 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.

MICROCHANNEL CONDENSERS

With the incorporation of microchannel condensers, Lightstream Scroll provides owners all the numerous benefits of this technology, permits a substantial increase in cooling efficiency and enables improvements in chiller design and it’s environmental safety – compared to finned tube coil designs:

  • Higher heat transfer rates enable lower condensing temperatures and result in energy savings on compressors
  • 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 chiller

Optionally available protective coatings enable trouble-free condenser operation in marine atmospheres, high-polluted industrial zones, and other chemically active areas.

OPTIONAL EXTRAS

  • Hydronic Modules

    Lightstream Scroll chillers can be optionally packaged with single or dual inline pumps that come with highly efficient motors. With the unique high-precision machinery, the tolerances used in the manufacture of the impeller and pump casing are minimized to optimize the flow geometries of these two crucial components. The result: minimal backflow and increased pump efficiency.

  • Water Tanks

    Lightstream Scroll chillers can be optionally packaged with buffer tanks with different volumes, finished in thermal insulation and plastic outer coating. Tanks are equipped with necessary safety accessories, air vents, expansion vessels, filling and drain taps.

  • Heat Recovery

    High-temperature energy of the superheated refrigerant gas discharged by compressors can be turned into hot water through heat recovery options available for Lightstream Scroll chillers:

    • Desuperheater for partial heat recovery (up to 25% of the chiller output)
    • Total heat recovery system with heat exchanger installed in parallel to condensers (100% of chiller thermal capacity)

PRODUCT SPECIFICATIONS

Capacity [kW] 200 … 900
Design AIR-COOLED
Compressors SCROLL
Refrigerant R410A
Energy efficiency (EER) UP TO 3.20
Seasonal efficiency (ESEER) UP TO 4.70
Fan motors AC/EC
Condensers MCHE
Evaporators BPHE/S&T
Evaporation control EEV
Refrigeration circuits SINGLE/MULTIPLE
Warranty 3 YEARS
Get brochure

Related products