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Registros recuperados: 5
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Effect of near infrared reflection and evaporative cooling on quality of mangoes CIGR Journal
Kipruto, Korir Meshack.
Mango fruit is valuable in Kenyadue to its nutritive and economic value.  However, at least 40% to 45% of the fruit is lost during postharvest handling due to inadequate storage facilities.  This study aimed at investigating the effect of combination of near infrared reflection (NIR) and evaporative cooling (EC) on quality of mangoes.  Freshly mature Apple and Kentmangoes were selected, cleaned and stored in NIR store (SNR).  The shelf-lives and quality attributes namely physiological weight, colour and firmness were evaluated on daily basis against similar fruits stored in an equivalent non-NIR store (SNNR).  Storage under room conditions (RC) was used as control experiment.  Digital scale, Minolta colour difference meter and penetrometer were used to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural processing Engineering; Post-harvest technology Apple and Kent mangoes; Near infrared reflection; Evaporative cooling; Quality; Kenya.
Ano: 2017 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3858
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Energy evaluation of an evaporative cooling system using water driven ejector Ciênc. Tecnol. Aliment.
Oliveira,Cíntia Carla Melgaço de; Gutierrez,Mirko Chavez; Silveira Junior,Vivaldo.
The search for efficient and accessible cooling systems has increased worldwide. This study aims to build and evaluate an evaporative cooling system using a water driven ejector, allowing it to be installed in places with plenty of water. The system was investigated varying the flow rate and temperature of the circulating water, temperature of the replacement water, and coefficient of performance. The best vacuum obtained was 8.5 kPa at nominal operating conditions of 4.1 ± 0.1 m³/h and 5 ± 0.5 ºC for the circulating water reaching the temperature of 9.7 ± 0.5 ºC. The pulse-like disturbance generated by replacing the cooling water at different periods of times did not result in significant affect vacuum destabilization and the temperature rise in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermal storage; Evaporative cooling; Ejector.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000200029
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Evaluation of a simplified model for estimating energy balance in broilers production housing AGRIAMBI
Silva,Mariano P.; Baêta,Fernando C.; Tinôco,Ilda F. F.; Zolnier,Sérgio; Ribeiro,Aristides.
The simulation of poultry house thermal behavior with and without Adiabatic Evaporative Cooling (SRAE) allows the decision makers to evaluate the economical feasibility and the installation costs of a poultry production business. The first step in this research investigation was test the thermal behavior model developed by Gates et al. (1995) for broiler houses in the United States based on the hypothesis that this model, using climatized sheds, as proposed by the authors, could be used under Brazilian conditions. The model is suitable for the proposed objective in the form proposed by Gates et al. (1995) for poultry houses with an elevated mass air flow rate (120.8 kg air s-1 or higher). A correction factor referring to a series of heat sources not...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mathematical models; Chicken production; Evaporative cooling.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662007000500014
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Experimental evaluation of bulk charcoal pad configuration on evaporative cooling effectiveness CIGR Journal
Korese, Joseph Kudadam; Hensel, Oliver.
The purpose of the study was to evaluate the performance of bulk charcoal pad configuration, experimentally. For this, a number of experiments have been conducted in a wind tunnel in order to evaluate the pressure drop, cooling efficiency and specific water consumption as a function of air velocity, water flow rate and pad configuration. The test were carried out at six levels of air velocity (0.12, 0.51, 0.82, 1.05, 1.10 and 1.14 m s-1), three water flow rates (2.2, 3.2 and 5.2 l min-1) and three pad configurations: single layer pad (SLP), double layer pad (DLP) and triple layer pad (TLP) made out of small and large size charcoal particle of equivalent diameter 30 mm and 50 mm respectively. It was found that pressure drop range of small size charcoal pads...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Charcoal; Pad configuration; Wind tunnel; Evaporative cooling; Pressure drop; Cooling efficiency; Specific water consumption.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3841
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Mini tomato production in organic system under greenhouse with partial control of meteorological elements AGRIAMBI
Araujo,Haroldo F. de; Leal,Paulo A. M.; Zorzeto,Thais Q.; Nunes,Eduardo F.; Betin,Pâmela S..
ABSTRACT The objective of this research was to evaluate the meteorological elements of the environments and the production components of mini tomato crop in organic system in different forms of cultivation, biofertilizer doses and technological levels of protected environments. The research was conducted in completely randomized design in a 3 x 2 x 5 factorial scheme, corresponding to three greenhouses (A - climatized, B - mobile screen and C - fixed screen), two forms of cultivation (pots and beds) and five doses of a commercial biofertilizer (0, 50, 100, 150 and 200% of dose indicated), with five replicates. The treatments affected the analyzed variables, except for biofertilizer doses and interaction of treatments. Air temperature was unchanged among...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum lycopersicum L.; Organic cultivation; Evaporative cooling; Forms of cultivation; Automated control.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900800
Registros recuperados: 5
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