New generation tube exchanger design for heat recovery inindustrial food production systems

The increasing population of the country has caused an increase in the need for energy and consumption. As a result of this, the continuous decrease in energy resources and the increasing demand have increased the importance of energy efficiency and heat recovery. Heat energy is used in the process according to need and is discharged into the atmosphere inefficiently. Sending this discarded heat source back to the process with the help of heat exchangers will ensure energy efficiency. But if we do not take advantage of this energy source and continue to leave it to nature, we will continue to pollute nature, while we will not be able to generate economic income. In this thesis, previous studies were examined in detail, and heat recovery was aimed for preheating of the inlet air with the help of absorption cooling from waste heat in the spray drying system and a new generation tubular exchanger. As a result, unlike the heating process of 20 °C fresh air in the direct air heater, which is done in most literature studies, the ambient air was preheated by using waste heat and it was raised to 110,42 °C. Thus, an efficiency increase of %49,7 is achieved in the air heater. The cooling performance coefficient of the system using ammonia and water mixture was calculated as 0,67, cooling efficiency as %49,6, heating performance coefficient as 2,02 and heating efficiency as %41,2. With this system, carbon emission was reduced by %49,7. With this designed system %16,39 of the pipe length was saved.