Mathematical modeling of plate-fin heat exchanger in aircraft environmental control system

Heat exchangers (HE) are an integral part of power plants. HE Transport versions demand on their transient states’ quality. The development of the secondary heat exchanger mathematical model using the finite volume method is discussed. A system of partial differential equations is derived. The implicit finite-difference numerical Rado method, implementation of which is built in modern mathematical packages, was chosen to solve this system. This approach is optimal from an engineering point of view and allows imbedding a model of a heat exchanger in the general mathematical model of the aircraft environmental control system.