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.
Dalian Polytechnic University economics. Dalian Polytechnic University Dalian Polytechnic University () is a university in Dalian, Liaoning. The school was founded in 1958 in Shenyang as the Shenyang Institute of Light Industry (). In 1970, it was transferred to Dalian, and renamed as the Dalian Institute of Light Industry (). In 2006, it was promoted in 2006 from the rank of institute to the rank of university. It is the only institution of higher education in northeast of China specializing in light industry, food, textiles and art design. There are about 15,000 students on the campus. Subjects taught include engineering, science, arts, management,