Varun Radiators Pvt. Ltd. Offers Intercoolers for Commercial Vehicles. Varun Radiators Pvt. Ltd. Supplies high performance radiators, condensers, heat exchangers, parallel flow condensers for wide range of applications. The wide range of Intercoolers is designed for application in commercial vehicles. The intercoolers are available in both aluminium and plastic tanks. The Intercooler or charge air cooler, is an air-to-air or air-to-liquid heat exchange device used on turbocharged and supercharged [forced induction] internal combustion engines to improve their volumetric efficiency by increasing intake air charge density through nearly isobaric [constant pressure] cooling, which removes the heat of compression [i.E., the temperature rise] that occurs in any gas when its pressure is raised or its unit mass per unit volume [density] is increased.