Venting stage experimental study of food sterilization process in a vertical retort using temperature distribution tests and energy balances
| Autor: | Pedro Nel Alvarado Torres, Alexander Giraldo Gil, Luis Fernando Cardona Sepúlveda, Oscar Alberto Ochoa González |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Transient state
Thermal efficiency Food sterilization 020209 energy Energy balance 02 engineering and technology Retort Temperature uniformity ratio 01 natural sciences law.invention law Temperature distribution test 0202 electrical engineering electronic engineering information engineering Engineering (miscellaneous) Venting stage Fluid Flow and Transfer Processes Waste management Vertical retort Final product Energy consumption Sterilization (microbiology) 010406 physical chemistry 0104 chemical sciences Energy efficiency lcsh:TA1-2040 Environmental science lcsh:Engineering (General). Civil engineering (General) Efficient energy use |
| Zdroj: | Case Studies in Thermal Engineering, Vol 22, Iss, Pp 100736-(2020) |
| Popis: | Thermal sterilization of canned food is widely used in the food preservation industry. This method ensures the microbiological safety of the products, helps to define their sensory properties, and preserves their nutrients. However, sterilization requires a significant amount of energy, which has an impact on the cost of the final product and the environment. In this paper, we present an experimental study into the energy balance in a vertical steam retort in a transient state during the venting stage with an initial product temperature of 4°C and a container size of 63.5 x 30.16 mm. We carried out the experiments in accordance with the protocol for conducting temperature distribution studies developed by the Institute for Thermal Processing Specialists (IFTPS). Additionally, by means of a heuristic optimization method, we determined an optimal venting program for the process and its energy efficiency. The total energy consumption was 32.5 MJ; the thermal efficiency of the process, 43.88%; the losses through walls, drainage, venting, and purging, 27.82%; the energy required to heat the retort and the fittings, 22.91%; and others losses, 7.0%. Furthermore, we studied the phenomena associated with the sterilization process to propose strategies to reduce energy consumption. |
| Databáze: | OpenAIRE |
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