Data/hora: 10/06/2024 13:38:52

Provedor de dados: | 124
País: | Brazil
Título: | A Mathematical model for the cold storage of agricultural products
Autores: | Meneghetti,Carlos Renato; Tizzei,Alexandre; Cappelli,Nelson Luis; Umezu,Claudio Kiyoshi; Bezzon,Guilherme.
Data: | 2013-06-01
Ano: | 2013
Palavras-chave: | Variable rotation; Simulation; Agricultural products-storage; Electrical energy-consumption.
Resumo: | Studies of control strategies for refrigeration systems observe, among other variables, the dynamic behavior of temperature and the consumption of electrical energy. Aiming to contribute to these studies, this work presents the proposal and validation of a mathematical model for the cooling system of a cold-storage unit. The model approximates the dynamics and interdependence of the variables, to first-order systems with time delay and the summation of effects. The input variables available are the frequency of compressor activation and the thermal load imposed on the unit, and as output variables, the air temperature both at the evaporator inlet and at the centre of the chamber, as well as the electrical power consumed by the compressor. The results obtained were satisfactory, with an error of less than 0.11 ºC for the air temperature at the evaporator inlet, of less than 0.09 ºC for the temperature at the centre of the chamber, and of less than 1% for the electrical energy consumed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200010
Editor: | Universidade Federal do Ceará
Relação: | 10.1590/S1806-66902013000200010
Formato: | text/html
Fonte: | Revista Ciência Agronômica  v.44 n.2 2013
Fonte: | info:eu-repo/semantics/openAccess