Özet:

It is known that energy is one of the important signs of economic and social welfare, and it has an important role in increasing the quality of life. Demand for energy, especially due to increased population, industrialization and technological developments in developing countries, is increasing steadily. With this increase, countries want to achieve energy in an easy, cheap and uninterrupted manner. Thus, countries have shifted to alternative energy sources and systems where they can use energy more efficiently. In our country, applications for such systems are becoming widespread. Especially in the industrial sector, where energy consumption is high, recovery of the waste gas waste heat is at the beginning of these applications in order to use energy more efficiently. In this study, in order to increase energy efficiency of powder coating facilities, energy recycling systems researched and an heat exchanger system has been designed to utilize the paint drying and curing oven waste to heat water then systems results and benefits was investigated. Parts which are requested to be painted by industrial powder coating facility must have several steps to be able to paint. First of all oil is eliminated from metal by passing inside of oil eliminating baths. To provide good paint sticking onto metal surface, chemical reaction is actualized with zinc phosphate to receive corroded surface. For finishing of the reaction parts go inside of passivation bath. Parts are washed with DI (deionized) water to remove chemicals from part. All parts must be totally dry before entering to paint booth therefore one drying oven is used to provide good parts. After painting parts go inside of the curing oven to get final shape. Curing oven cooks the powder and parts go out by passing inside of cooling zone for discharging of transferred heat inside of curing oven. The drying and curing ovens mentioned in this process contains waste heat inside of their chimneys. Aim of this project is decreasing ∆T of zinc phosphate bath central heating boiler’s input and output values by using occurred waste heat in oven chimneys. This heat will be transferred to central heating boiler input water pipe and ought to this heat transfer boiler efficiency will be improved.

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