How a Chiller Plant Works — Interactive 3D

Drag to orbit the plant, zoom in on any component, and click equipment to learn what it does. Watch the chilled water travel from the chillers all the way to the AHUs and FCUs — and the condenser water loop carry the heat up to the cooling towers. Take the guided tour for a step-by-step walkthrough.

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Pipe legend

CHW Supply ~7°C

CHW Return ~12.5°C

Cond. → tower ~37°C

Cond. ← tower ~32°C

Drag to rotate · scroll to zoom · click equipment

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Illustrative model for education. Temperatures, flows and component counts are typical values — every real plant is engineered to its own load and site conditions.

The Chilled-Water Journey

From Chiller to AHU & FCU

A water-cooled chiller plant runs on two water loops and one refrigeration cycle, working together continuously.

The chilled-water loop (blue & red)

Inside each chiller, a refrigeration cycle cools water down to about 7 °C. Primary pumps push this cold supply water (CHWS) through the building's headers and risers to the cooling coils of the AHUs and FCUs. Fans blow room air across those cold coils — this is where the building actually gets cooled. The water, now warmed to about 12.5 °C, returns (CHWR) to the chiller to be cooled again. Header and pipe sizes are selected from the flow in litres per second, keeping velocity and friction within ASHRAE / SNI limits.

The condenser-water loop (green)

The heat the chiller removes has to leave the building. Condenser pumps drive the green loop from the chiller condenser up to the rooftop cooling towers, where fans and evaporation reject the heat to the air before the cooled water returns to the condenser.

One team, the complete scope

PT. Son Duct Sejahtera designs, fabricates, installs and commissions this entire system — chillers, pumps, cooling towers, chilled-water piping, and the square & spiral ducting that carries the cooled air from each AHU into the rooms. We installed one of Indonesia's largest chiller plants — 4 × 1,650 TR at Thamrin Nine.

Coming soon: enter your chiller, pump and cooling-tower data and this page will size the pipes and headers for you — plus AHU/FCU, VRV refrigerant piping, and room cooling load (BTU/h).

Our HVAC Design & Build

Planning a Chiller Plant or HVAC Project?

Tell us about your building — our engineering team will respond with a practical proposal and competitive quotation.