A water-cooled chiller transfers condenser heat to a separate water circuit, which needs a cooling tower or another suitable heat sink. Water in the process circuit alone does not make a unit water-cooled.

Required infrastructure

Define condenser-water temperature, flow, quality and heat-rejection duty. The tower, pumps, water treatment and service access belong to the complete system. Evaporator cooling capacity and condenser heat rejection are different quantities.

Whole-system efficiency and cost

Assess condenser pumping, tower fans and water cost alongside unit electrical input. Use full- and part-load profiles for annual energy estimates. A unit COP does not independently represent total plant cost.

Vega product scope

The VG SS, VG DS, VG MS and VG DW pages on this site describe air-cooled series. This guide explains infrastructure and selection requirements for a water-cooled system. Confirm a suitable solution and product availability when requesting an offer.

Project inputs and calculation boundaries

For a quotation, specify approximate heat duty, fluid, inlet and outlet temperatures, flow, pressure loss and operating hours. Design ambient conditions, indoor or outdoor location and electrical infrastructure are also selection inputs. Flow and temperature readings must represent the same operating point. Do not transfer a catalogue capacity directly to different temperatures; confirm model performance at the required duty.

Commissioning and operating records

Check circuit cleanliness, filtration, air removal, proven flow and sensor readings. Record reference water temperatures and load conditions during commissioning. These values provide a baseline for maintenance and alarm investigations. Confirm pumps, tanks, connections and control options against the agreed quotation scope.

Frequently asked questions

Is the series capacity range sufficient for final selection?

No. Confirm the actual model at the required fluid temperature, ambient conditions, fluid properties and hydraulic duty.

Is cooling capacity the electrical consumption?

No. Cooling kW and electrical-input kW are different quantities. An energy assessment also needs actual load and operating hours.

What information is needed for a quotation?

Provide the industry or equipment, target temperature, approximate duty, flow, ambient conditions, operating hours and details of the existing system.

These explanations provide general engineering guidance. Examples are not field measurements or performance guarantees for a particular model.