EVALUATION OF THE MAINTAINABILITY OF HEAT GENERATING DEVICES FOR TECHNOLOGICAL EQUIPMENT OF FOOD PRODUCTION

EDN: PAUCIC

Abstract

Maintainability is one of the most important indicators of the reliability of heat-generating devices for food processing equipment. It is provided at the stage of their design and is investigated during the testing of prototypes. Experimental studies require the involvement of a fairly significant amount of resources. In this regard, there is a need to develop methods for choosing design solutions that ensure the maintainability of heat generating devices at the stage of their design. This is especially important in the context of a shortage of spare parts, an increase in their cost, and the time spent on their delivery due to the destruction of supply chains in the context of economic sanctions.

The article proposes a method for assessing the maintainability of heat generating devices and choosing design solutions that minimize the cost of repairs based on a comparison of the costs of replacing a structural element with new ones and their repair.

As a method for solving the problem, an analysis of a discrete set of feasible solutions for the repair or replacement of individual units or a heat generating device as a whole during its operation is used.

The selection criteria for the expansion is the minimum cost of replenishing the health of the heat generating device, calculated by the Bellman function, i.e. using the theory of dynamic programming. This makes it possible to determine the optimal variant of a constructive solution from a variety of possible ones and to ensure the operability of the adopted variant of the heat generating device, taking into account the cost of its repair.