Mechanical engineering including mechanical and chemical engineering. At its simplest, thermodynamics is the study of energy, its use and transformation through a system. Typically, engineering thermodynamics is concerned with changing energy from one form to another. As an example, automotive engines convert chemical energy (enthalpy) from the fuel into heat, and then into mechanical work that eventually turns the wheels. Thermodynamics principles are used by mechanical engineers in the fields of heat transfer, thermofluids, and energy conversion. Mechanical engineers use thermo-science to design engines and power plants, heating, ventilation, and air-conditioning (HVAC) systems, heat exchangers, heat sinks, radiators, refrigeration, insulation, and others.
Economy of Dalian There are the Dalian branches of China's five major banks: Bank of China, Industrial & Commercial Bank of China, China Construction Bank, Bank of Communications, and Agricultural Bank of China. Dalian Commercial Bank is now called Dalian Bank, which among other things handles processing of the Dalian Mingzhu IC Card for public transportation. Dalian Commodity Exchange is the only one of its kind in China, expanding the futures market beyond soybeans. A "Financial Street" around the new Commodity Exchange building is now being planned. Since the 1990s, Dalian City has emphasized the development of the IT industry, especially in Dalian