Piotr Nikończuk

Preliminary analysis of heat recovery efficiency decrease in paint spray booths

Abstract Increasingly the market offers new and used equipment spray booths with cross-recuperators. An attempt is made here to model the heat recovery efficiency decrease in spray booths and a preliminary theoretical analysis is presented. The heat recovery reduction is due to overspray particles deposited within the extraction ducts and heat exchanger walls. The average filtration efficiency degree of the paint stop filters is 93–97%. Filters do not provide complete cleaning of the air from the overspray particles and the growing sediment layer on the recuperator walls is a good thermal insulator. Studies of the deposit layer formation intensity and its thermal conductivity are ongoing.

Study of Heat Recovery in Spray Booths

Abstract More frequently, spray booths are offered with cross recuperators. The paint stop filters do not provide a complete cleaning of the air from the overspray particles. The layers of sediment of paint particles grow up on the walls of the extraction duct and recuperator fins. Forming sediment is a thermal insulator. This paper presents the results of a preliminary analysis of sediments growth rate and the impact of overspray deposits on heat recovery in spray booths.

Finding Temperature Distribution at Heat Recovery Unit Using Genetic Algorithms

Abstract The paper presents a method of estimating the distribution of air temperature changes in a heat exchanger using genetic algorithms. The method is based on the use of the Finite Element Method. The authors present construction of the fitness function. The results of several numerical experiments are presented. The experiments were conducted for a counter - current recuperator. The results of calculation were made for different gradations of temperature points in the same recuperator.