Centrifugal Chiller High Efficiency GFG-S/SIT Series GXG-S/SIT Series GSG-S/SIT Series

Centrifugal Chiller High Efficiency Centrifugal Chiller ■ HC-F-GFG-SSC Series HC-F-GXG-S Series (High Efficiency Type) HC-F-GSG-S Series (Compact Type) (Super High Efficiency Type) 1,055~7,032kW (300~2,000USRT) *Capacity can be extended up to max. 2,500USRT with single compressor. High Efficiency Inverter Controlled Centrifugal Chiller ■ HC-F-GFG-SITSC Series HC-F-GXG-SIT Series (High Efficiency Type) HC-F-GSG-SIT Series (Compact Type) (Super High Efficiency Type) Hitachi High Efficiency Centrifugal Chillers realize world top-level high efficiency and downsizing thanks to the advanced technologies...

Global Warming Prevention Energy saving by high-efficiency centrifugal chillers Global warming refers to the phenomenon of global rising in average atmospheric temperatures due to increased volume of CO2 and methane as a result of burning fossil fuels such as petroleum and coal. The 1995 IPCC* Report predicted that if the emission of CO2, etc. continued as it was, the atmospheric temperature would rise by as much as 2˚C by the end of the 21st century and, as a result, the sea level would rise by approximately 50 cm from the present level. In such circumstances, it is even more important to save...

Advantages Easy Operation with Touch Panel Type Control Panel Top-class Compact Design and Light Weight Design The compact design greatly improves flexibility in installation. Realizing space saving of machine room. Easy carry-in to machine room. Suitable for replacement of long-operating chillers. Significant reduction of refrigerant volume. 10.4 inch color touch panel screen Monitor various operating data Indicate trend graph during operation Trend data for max. 40 hours. (Updated every 1 hour) Indicate and store operation history for the past 12 hours (Updated every hour) Indicate and store...

Low press. low temp. suction gas 2-stage Compression Cycle To improve compressor efficiency, refrigerant economizer is added with 2-stage compressor equipped with 2 impellers, as shown in the drawing below. In this case, the refrigerant goes through two expansion devices. When the refrigerant goes through the first device, some of the refrigerant flashes, or become a gas. The flashed refrigerant is introduced to the compressor between the two stages. In the one-stage compressor cycle without the economizer, all refrigerant flows in the cycle. Comparatively, in the 2-stage compressor cycle the...

Advantages Hitachi High Efficiency Inverter Controlled Centrifugal Chiller Hitachi High Efficiency Inverter-controlled Centrifugal Chillers realize energy-saving operation through out the year utilizing variable motor speed control with inverter unit, drastically improving partial load efficiency under low cooling water temperature condition in off-peak seasons. In addition, the chillers have many unique energy saving functions which satisfy the demand to minimize the energy consumption. High Efficiency 2-stage Compressor Excellent Efficiency throughout the Year Max. Partial Load COP IPLV High...

Excellent COP at Partial Load Energy & Power Saving Operation Functions Various technologies such as newly developed high efficiency economizer (cyclonic system), etc. enabled drastic improvement of the efficiency at partial load with low cooling water temperature. Improvement of the oil supply temperature control and the automatic oil recovery enables extension of the motor speed control range at low cooling water inlet temperature. Max. Partial Load The chiller is usually controlled so the chilled water outlet temperature to be constant. This "Eco Mode" operation introduces the inlet temperature...

■ HC-F GFG-SSC | Constant Speed

■ HC-F GXG-S | Constant Speed REMARKS 1. Please consult with our sales staff or distributor for actual specifications for cooling capacity, expected kW input and COP, depending on selected operating parameters. 2. The above specifications are subject to change without notice for technical improvements. * This table is applicable to chillers to be manufactured for normal water. 3. Capacity control range is 100% to approx. 20%. (Minimum cooling capacity can be reduced to 10% as option.) 4. Fouling factor is assumed to be 0.018m2K/kW for chilled water and 0.044m2K/kW for cooling water. 5. Standard...

■ HC-F_GSG-S | Constant Speed

Standard Scope of Supply The following table shows the standard scope of supply, but the actual scope depends on the contract. Please consult with our sales staff or distributor. Item Standard Scope Main Equipment Compressor, Main motor, Lubrication system, Heat exchanger Aux'l'ar E u ment Safety device, Control panel, Standard accessories (Corrugated rubber vibration insulator plates, Oil strainer elements, Gasket for oil strainer elements, Dryer), Starter (optional) Chiller main unit: Anti-corrosive prime coating Coating Control panel: Finish coat (color: Munsell 5Y8/1 gloss) Starter (optional):...