The Air cooled heat exchanger is a device for rejecting heat from a fluid or gas directly to ambient air. When cooling both fluids and gases, there are two sources readily available, with a relatively low cost, to transfer heat to air and water. The obvious advantage of an air cooler is that it does not require water, which means that equipment requiring cooling need not be near a supply of cooling water. In addition, the problems associated with treatment and disposal of water have become more costly with government regulations and environmental concerns. The air cooled heat exchanger provides a means of transferring the heat from the fluid or gas into ambient air, without environmental concerns, or without great ongoing cost. The heat exchangers are commonly useful in industries where the fluids have small chances of fouling. Plate fin heat exchanger manufactures are the same for all sizes and all materials. Uses & Applications Fin heat exchangers are widely used in automobile, aerospace, cryogenic and chemical industries. They are characterized by high effectiveness, compactness (high surface area density), low weight and moderate cost. Although these exchangers have been extensively used around the world for several decades, the technologies related to their design and manufacture remain confined to a few companies in developed countries. Recently efforts are being made in India towards the development of small plate fin heat exchangers for cryogenic and aerospace applications. Finned Type Heat Exchanger Applications can be summarized as used in following areas: Refrigeration Condensers, Air Coolers, Air Heaters, Natural gas liquefaction, Air Separation, Steam Condensers, Ammonia production, Oil refineries, Food Industries and Processing Industries, Nuclear engineering & Syngas production. Market Survey Energy savings is rapidly emerging into a massive industry worldwide, and this global trend towards significantly reducing heat energy costs, and increasing energy efficiency has and will continue to witness heat exchangers emerge as the greatest beneficiary. On the end use front, the industry is witnessing a rapid shuffling of shares with emerging applications in environmental remediation, propped by tightening legislation, increasingly outnumbering the traditional applications within chemical, fuel processing, and power generation sectors. Competition in the global heat exchangers market has, over the last few years, intensified largely as a result of the emergence of low cost Asian manufacturers. New entrants from Russia, Eastern Europe, and Asian nations such as India and China, have made remarkable progress. Continued resurgence of investments in energy and petrochemical sectors in Asia will aid in spurring demand for heat exchangers in the region for use in processes in the production and refining of oil, gas, and petrochemicals. ? Few Indian Major Players are as under:- Behr India Ltd. Bharat Heavy Electricals Ltd. Filtron Engineers Pvt. Ltd. G E I Industrial Systems Ltd. Incorporated Engineers Ltd. India Radiators Ltd. Jord Engineers India Ltd. Paharpur Cooling Towers Ltd. Patels Airtemp (India) Ltd. Sarabhai Machinery Pvt. Ltd. Tema India Ltd. Titanium Tantalum Products Ltd. Ultra Drytech Engineering Ltd. Universal Heat Exchangers Ltd.