Added-value of an OEM when installing HydroCOM

The understanding and knowledge provided by an OEM is an essential factor when installing additional equipment on your compressors, especially when these changes can cause major functional issues.

Howden is able to calculate and analyse the situation to give the best advice on installing additional systems to your compressors and to continue the efficient operation of our compressors.

Printable PDF/brochure
HydroCOM case Study

The challenge

A client in India installed three units of C-45.4 reciprocating compressors, in which two were running and one was standby.

A few weeks after installation, there was a failure on a driver fan of two running machines, which was repaired by replacing the original fan with the new designed one.

Those two machines have worked well since then without any failures recorded. Couple of years later, the client replaced the capacity control system of the third machine by a so called HydroCOM system, the same driver fan failure re-occurred.

Referring to the previous experiences, the client replaced the fan with the new design as they did before. However, the driver fan kept on failing.

After several costly replacements, Howden Thomassen Compressors, as an OEM of those compressors, was contacted to conduct a feasibility study, aiming to review and solve the fan problem, at the same time to give advice on what can be done to combine those three units with the usage of HydroCOM system, while maintaining the existing equipment as much as possible.

The solution

The study consisted of different performance checks and unique calculations provided by HTC regarding the impact of HydroCOM system in the operation of those three units.

The study result showed that the natural frequency of HydroCOM system coincided with the natural frequency of the external fan, of the main driver, which was the main reason causing the fan to break.

The solution, therefore, was simply pointed out, which was changing the natural frequency of either the main driver, or the whole drivetrain.

After consideration and further calculations on torsional analysis, changing the frequency of the drivetrain was proven the most feasible comparing to other options.

A heavier flywheel was applied to replace the existing barring wheel in the compressors, which helped to move the natural frequency of the fan out of the coincidence with the natural frequency of the external fan.

By doing that, the natural frequency of those components would not amplify and the fan was prevented from cracking.


The outcome

The client was happy and satisfied with the solution given by Howden. They showed the appreciation for the quick support to identify the root cause and solve the problem.

Howden, once again, is able to prove the importance of the added-values of an OEM in contributing to the success of the client in operation with compressors.

The three original compressors

Full Case Study

Please complete the fields below to get your copy.

Email Address
First Name
Last Name

Full List of Case Study pages

The introduction of Howden's VN seal system to the air preheaters brought an immediate drop in leakage level from 26% to 5%.

Howden completed a retrofit of VARIAX ID fans on the 640MW unit 5 at Asn?s Power Station, Denmark.

The Howden Free Floating Piston is a proven unique technolgy that turns the weakest point to one of the strongest, which removes rider bands wear at a stroke

Berre Petrochemical Cluster, which includes polypropylene and polyethylene plants, trusted Howden to reduce its power costs by 7% within a 3 year return on investment.

VentSim? CONTROL technologies result in impressive cost and energy savings while also raising productivity at Goldcorp Eleonore gold mine.

Fresnillo mine is one of the most technologically advanced deep mines in the world, and incorporates VentSim? CONTROL ventilation management.

UPTIME provides advanced compressor performance analysis at Gunvor Petroleum in the Netherlands

Howden worked with a North American hard rock mine to introduce a Ventilation on Demand system using VentSim? CONTROL technology.

Installing a bigger hub at Herningv?rket, reducing installation costs and future service expenses.

The understanding and knowledge provided by Howden is an essential factor when installing additional equipment on your compressors.

New integrally geared compressor (IGC) results in power savings up to 31MW/h a day

Replacement of primary plate heaters with Howden custom designed rotary air preheaters.

200 bar to 300 bar hybrid compressor retrofit for helium capacity filling

At Millmerran Power Station, Howden provides a tailored service that supports their needs of the plant to prepare for their upcoming major outage.

New boiler and FGD processes called for a total change of the ID booster fan at a power plant in Plzen

Howden develop method to drastically reduce the cylinder repair time of reciprocating compressors.

Upgrade your reciprocating compressor with our innovative coated liner solution.

The introduction of Howden's HC element to the air preheater resulted in extended operational times.

Huge savings were realised by using Howden's turnkey service to reduce heater leakage and running costs.

A large chemical plant on the east coast of the United States contacted Howden to perform a full Turnkey project on their critical path air preheaters.

Howden expertise solves long lasting problems with an axial fan at Uniper's Franken plant.

During the first few months after the deployment of Uptime, VEAS experienced two distinct challenges where the benefits of Uptime were clearly demonstrated.

VentSim? CONTROL case study for three typical mining projects.

Replacement of existing blades at the Wangqu Thermal Power Station

Building the world?s biggest reciprocating compressor - a white paper and video.

Efficient engineering solves impeller failures at the Wibank coalfield.

Centrifugal Fan

At Tarmac (Dunbar cement plant, UK), their existing Raw Mill fan was replaced with an enhanced Howden design in 2007.

If you would like to submit an enquiry please get in touch.

Your local Howden contact

The below contact(s) are the representatives for your country. You can change country below.