Ranga Nadig - Experienced Leader Within the Thermal Sciences Sector

Ranga Nadig began preparing for his successful career by studying mechanical engineering. He received his bachelor’s degree in the subject from Regional Engineering College, along with a master’s degree and Ph.D. from the University of Utah. While in school, he spent several years as a research assistant and research fellow and wrote several publications and papers. Shortly after graduating with his Ph.D., Ranga Nadig joined Joseph Oat Corporation as a senior engineer. Through this position he gained valuable experience in thermal and mechanical design of heat trabnsfer components.

From there, Mr. Nadig joined Holtec International as a project manager for the power plant components division and eventually earned a promotion to director and later vice president and senior vice president of the same division. In these various positions, he was responsible for activities such as marketing and sales, thermal & meachanical design, and business development. During the 24 years tenure with the company, he obtained several patents for innovative equipment design. In 2011, Ranga Nadig became the president at Maarky Thermal Systems in New Jersey. In this capacity, he oversees the daily operation and growth of all units within the company, including heat transfer components and technical services.

2015 POWER-GEN International Conference to Take Place in December

President and CEO of the New Jersey-based Maarky Thermal Systems, Ranga Nadig has more than 30 years of experience in thermal sciences as applied to heat transfer components. Ranga Nadig is affiliated with numerous energy and thermal science conferences worldwide, such as the annual POWER-GEN International Conference. POWER-GEN is currently preparing for its 2015 event.

Considered a leading source of power generation information, POWER-GEN’s annual conference serves as a meeting ground for power professionals from around the world. More than 1,400 companies exhibit at the conference, which attracts approximately 22,000 professionals each year. Its widespread attendance and assortment of programs make it the largest power generation event worldwide.

Featured panels and events focus on topics regarding business strategies, technical trends, and the latest industry innovations. The program track includes over 40 sessions presented by more than 200 industry leaders, with topics sorted into 13 session tracks. Additionally, participants enjoy access to networking events and an exhibitor hall featuring company representatives from over 90 countries.

The 2015 POWER-GEN International Conference will take place at the Las Vegas Convention Center from December 8 through December 10. Registration rates vary by attendee status and affiliation, and early bird registration rates are available until October 5. Registered attendees also obtain access to additional Power Generation Week events, such as NUCLEAR POWER International and the Renewable Energy World Conference & Expo North America.

For additional information on the 2015 POWER-GEN International, visit the conference website at www.power-gen.com.

Power Plant Subcooling Zone Design Improvements

CEO Ranga Nadig leads Maarky Thermal Systems Inc., a firm that offers innovative heat transfer equipment and services worldwide. Respected in his field, Ranga Nadig presented a paper titled “Improvements in the Performance of a Subcooling Zone in a Feedwater Heater with Dual End Plate Design with Water Seal in Between” at the ASME Power and Energy Conversion Conference in San Diego, California in June 2015.

The paper deals with steam-power plant horizontal feedwater heaters, which traditionally have a partial-length subcooling zone. This zone is protected by an end plate, which forms a single liquid barrier against condensing zone steam. Natural wear over time results in gaps forming between the tube hole and the active tube in the end plate. The liquid barrier is down graded and in certain instances entirely lost. Steam enters the subcooling zone and downgrades the performance of the subcooling zone, the feedwater heater and the power plant. Maarky has addressed this problem through a patent-pending concept of dual end plate subcooling zone with a water seal, which features two end plates a short distance apart with a water seal in between. The triple layer of separation between the subcooling zone and the condensing zone preserves the performance of the subcooling zone, the feedwater heater and the power plant.

Challenges in Converting Coal-Fired Plant Condensers to Combined-Cycle

Based in Cherry Hill, New Jersey, Dr. Ranga Nadig serves as CEO of Maarky Thermal Systems, which provides steam surface condensers and heat exchangers to power plants worldwide. A paper titled Challenges in Converting a Coal-Fired Power Plant Condenser into a Combined-Cycle Plant Condenser and authored by Dr. Ranga Nadig appears on Maarky’s website. Upgrading to combined-cycle plants, which reuse gas turbine waste heat, helps mitigate the pollution and inefficiency associated with traditional coal plants.

According to Dr. Nadig, design features in a coal-fired plant condenser differ significantly from that in a combined-cycle plant condenser. For instance, the former features a lower flowrate of turbine exhaust steam. By contrast, a combined-cycle plant condenser must operate in bypass mode for extended or short periods of time. In addition, a traditional coal-fired plant contains a pressurized deaerator, which separates oxygen from condensate. In a combined-cycle plant, this process takes place within the condenser.

In addition, a combined-cycle plant has the capacity to operate as a cogeneration plant, with some percentage of the steam used for heating purposes As a result, large quantities of makeup water must be introduced and de-aerated within the condenser. Maarky’s equipment stands on the forefront of these and other challenges that must be addressed in converting a coal fired plant condenser into a combined cycle plant condenser. .