14 documents found, page 1 of 2
Peltier Cell Integration in Packaging Design for Minimizing Energy Consumption ...
Fernandes, Pedro; Gaspar, Pedro Dinis; Silva, Pedro D.This study proposes an innovative approach to reduce temperature fluctuations in refrigerated transport during loading and unloading, aiming to minimize food waste and optimize energy consumption in the food supply chain. The solution involves integrating Peltier cells into secondary and tertiary packaging to improve system efficiency and minimize temperature variations. Four distinct tests were conducted: a re...
Energy Requirements and Photovoltaic Area for Atmospheric Water Generation in D...
Correia, Vasco; Silva, Pedro D.; Pires, Luís Carlos CarvalhoAtmospheric water generation (AWG) is a technological innovation that facilitates the extraction of water from the atmosphere using various techniques. In response to mounting concerns regarding water scarcity in multiple regions globally, AWG has emerged as a promising solution for providing potable water in areas where conventional water sources are limited or contaminated. AWG systems can be implemented acro...
CFD parametric study of thermal performance of different fruit packaging box de...
Ilangovan, Adhiyaman; Gaspar, Pedro D.; Silva, Pedro D.; Gonçalves, Ana R.; Sampaio, Álvaro M.; Pontes, A. J.; Alves, NanciAir temperature and relative humidity values of cold storage conditions are the major factor affecting the perishability of fresh fruits. The sooner the field heat is extracted from the products and the proper temperature is maintained consistency throughout the cold chain, larger it will be shelf life of these products. Forced air cooling is the most commonly used technique to remove the field heat in post-har...
What is the role of active packaging in the future of food sustainability? A sy...
Alves, Joel; Gaspar, Pedro Dinis; Lima, Tânia M.; Silva, Pedro D.Nowadays, the strong increase in products consumption, the purchase of products on online platforms as well as the requirements for greater safety and food protection are a concern for food and packaging industries. Active packaging brings huge advances in the extension of product shelf-life and food degradation and losses reduction. This systematic work aims to collect and evaluate all existing strategies and ...
Refrigeration Conditions and Fruit Quality for ‘Royal Time’ and ‘Royal Summer’ ...
Veloso, Abel; Ferreira, Dora; Gaspar, Pedro D.; Andrade, Luís P.; Espírito-Santo, Christophe; Silva, Pedro D.; Simões, Maria PaulaPeach is a very perishable climacteric fruit whose firmness may decay rapidly depending on the temperature. Refrigeration is usually used to delay ripening and maintain fruit quality. However, refrigeration management is often not optimized. This work aims to characterize the refrigeration conditions (temperature and humidity) of 3 peach producers of Beira Interior region, Portugal. Additionally, correlate thos...
Testing of a resistive sensor with fabric medium for monitoring frost formation...
Aguiar, Martim; Gaspar, Pedro Dinis; Silva, Pedro D.; Duarte, DianaRefrigeration is one of the key elements for food preservation. With global temperatures increasing due to global warming, the efficiency in refrigerated storage systems must be improved. One of the problems that is yet to be solved in these systems is the efficient and accurate removal of the frost formed on the heat exchanger surface. In previous works, a low-cost resistive sensor has been developed to detect...
Experimental Study of Thermal Performance of Different Fruit Packaging Box Designs
Leitão, Fábio António Soares Pinto; Silva, Pedro D.; Gaspar, Pedro Dinis; Pires, Luís C.; Duarte, DianaPackaging was recently identified as an essential element in addressing the key challenge of sustainable food supply and is gaining interest among researchers. It is a central element in food quality preservation due to its role in heat and mass exchange with the external atmosphere, contributing to the preservation of food quality during storage and extending food shelf life. This work proposes three new packa...
Influence of storage conditions on fruit quality of ‘Royal Time’ and ‘Royal Sum...
Veloso, Abel; Ferreira, Dora; Gaspar, Pedro Dinis; Andrade, Luís Pinto de; Espirito Santo, Christophe; Silva, Pedro D.; Simões, Maria PaulaPeach is a very perishable climacteric fruit whose firmness may decay rapidly depending on the temperature. Refrigeration is usually used to delay ripening and maintain fruit quality. However, often temperature storage conditions are not optimized. This work aims to characterize the storage conditions (temperature and humidity) of three peach producers of Beira Interior region, Portugal. Additionally, correlate...
Airflow and Thermal Behavior within Peaches Packaging Box Using Computational F...
Ilangovan, Adhiyaman; Silva, Pedro D.; Gaspar, Pedro DinisPost-harvest cold storage of peaches is an essential element to maintain the quality of the fruits without any loss. This work aims to present a CFD model, to predict airflow patterns and temperature profiles in ventilated packaging systems, during the forced-air cooling of Peaches stored in a cold chamber. Transient CFD simulations are performed for the chamber containing four ventilated boxes and the evaluati...
Medium materials for improving frost detection on a resistive sensor
Aguiar, Martim Lima; Gaspar, Pedro Dinis; Silva, Pedro D.; Silva, A. P.; Martinez, A. M.Reducing food waste demands improvements in refrigeration systems. Furthermore, the rise of temperatures worldwide demands more capable and efficient refrigeration equipment. One of the problems that affects refrigeration equipment is the accumulation of frost in the heat exchanger that reduces efficiency, and in extreme cases, blocks the air flow. Usually, defrosting is timed for the worst-case scenario, which...