Indus
Products
Background
Fluid Cooler for secondary water circuit.

Indus has been involved with an European Company manufacturing patented absorption chillers.
Problem
These chillers are designed for high savings in primary energy reduction in CO2 emission. Indus was given only two pieces of data points, viz, the cooling capacity and the foot print for the Cooler. No other design data was given.
Solutions
Indus took up the challenge and designed the fluid coolers to have a cooling capacity of approximate 22 KW and utilizing a maximum of only 0.8 KW power.

The fans selected were coupled with Energy Saving EC (Electronically commented) motors of EBM Germany. These motor are designed to adjust the speed depending on the cooling load.

The biggest challenge for Indus was to manage the air pressure drop. The air pressure drop was kept to the most optimum by balancing the selection of the heat exchanger coil size and the required air flow. Thus by balancing these two factors a considerable saving in power and CO2 emission was achieved and the Cooler was designed within the foot print given to Indus.
Background
Manufacturing over 500,000 vehicles annually, the client was one of the largest automotive companies in India. With such large volumes, the need for compressed air for operating their pneumatic machines was also very high, and a major manufacturer was called in to fabricate a centrifugal compressor.
Problem
The inter cooler and after cooler water of the centrifugal compressor was to be cooled by a closed loop hybrid cooler. The already high requirement for cooling was further complicated by constraints of space, as the coolers were to be mounted on the roof of the facility.
Solutions
Addressing the challenge head on, Indus designed and fabricated a Hybrid cooler using the largest heat exchanger we had ever manufactured in a single piece. This V shaped cooler not only had the required small footprint, but also had a much higher cooling capacity. We also designed and supplied the complete package to the client, including water re – circulation pumping system, water spray system, evaporative media, fluid cooler assembly using tube and fin heat exchangers, control panel and motor control panel.

The results were excellent; the cooling achieved was far beyond the required capacity of 1600 KW at a flow rate of 150 m3 of water per hour. Though the design temperature was 34ºC, the temperature achieved at outlet was 32ºC all year around, resulting in much better compressor performance, and lower costs.