Easystream II Inverter

Easystream II Inverter

Chillers with water-cooled condensers featuring variable-speed scroll compressors for air conditioning and process cooling applications

40 – 350 kW

Applications: Air conditioning • Process cooling • Refrigeration • Commercial • Residential

Category:

EXACT CAPACITY MATCH, SHORT PAYBACK PERIODS

Through a combination of efficiency-enhancing technologies, including direct-current inverter scrolls, Easystream II Inverter delivers efficiency levels beyond typical of chillers in its class and exceeds stringent regulatory requirements while running smoothly and quietly.

Easystream II Inverter series chillers operate efficiently across all cooling loads and working conditions versus fixed-speed chillers with stepped unloading designs.

Thanks to the more reactive adaptation to cooling demand, these chillers contribute to lower installation costs, e.g., by downsizing or eliminating buffer water tanks, reduction in footprint, etc. The chillers offer lower sound levels compared to systems with on-off compressors, especially under part-load conditions, at night time – in both operating and startup time.

Inverter scroll compressor

INVERTER SCROLL COMPRESSORS

PERFECT PART-LOAD AND SEASONAL EFFICIENCIES

Inverter scroll compressors offer variable speed technology – the best way to comply with today’s energy standards with high part-load and seasonal efficiencies while providing several other benefits like precise cooling and humidity management, low startup current, low acoustic level, and wider operating map to cover most commercial applications in air conditioning.

Easystream II’s scroll compressors feature IDV (Intermediate Discharge Valve) valves and permanent magnet motors that are the major contributors to its highest performance levels.

Configurations available for Easystream II Inverter chillers include single inverter-driven compressors, manifolded inverter plus fixed-speed compressors, and inverter-driven compressor tandems.

Brazed plate heat exchanger

EVAPORATORS

BRAZED PLATE HEAT EXCHANGERS

Incorporating a brazed plate evaporator with improved plate geometry and optimized flow paths offers certain advantages. The most important of these are minimal approach temperature and reduced pressure losses.

A closer temperature approach enables higher evaporation temperature, thereby promoting improved compressor’s coefficient of performance (COP) and less energy use. With the reduction of pressure losses, required pump energy decreases, giving the customers a perfect opportunity for further savings.

The special design of evaporator plates guarantees consistent joints at the plate overlaps and assures leak-proof construction. Advanced plate geometry also ensures better metallurgical bonding, leading to optimal heat transfer efficiency.

FEATURES AND OPTIONS

  • Evaporation Control

    Accurate control of superheat at partial loads achieved with electronic expansion valves (EEVs). Fitting EEV permits a reduction in power consumption of up to 30% by controlling refrigerant flow and liquid injection in an evaporator at reduced head pressures.

  • Integrated Hydronic Modules

    Easystream II Inverter chillers can be packaged with single or dual inline pumps that come with highly efficient motors. With the unique high-precision machining, the tolerances used in the manufacture of pump impeller and casing are minimized, optimizing fluid flow paths and contributing to better pump efficiency. Optional storage tanks housed in separate cabinets are available in volumes from 250 to 400 liters, finished in thermal insulation, plastic outer coating, and 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 Easystream II Inverter 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] 40 … 350
Design WATER-COOLED/CONDENSERLESS
Compressors SCROLL
Refrigerant R410A
Energy efficiency (EER) UP TO 5.76
Seasonal efficiency (ESEER) UP TO 7.06
Condensers BPHE
Evaporators BPHE
Evaporation control EEV
Refrigeration circuits SINGLE/MULTIPLE
Warranty 3 YEARS
Get brochure

Related products