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Edwin Andres Villagran Munar
Department of Biological and Environmental Sciences, Faculty of Natural Sciences and Engineering, Universidad Jorge Tadeo Lozano, Bogotá 111321, Colombia

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Journal article
Published: 30 June 2021 in Agronomy
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Cut flower production in the Bogotá savanna is one of Colombia’s main export products. Flower production is mainly carried out in greenhouses, as this type of production system has substantial advantages over crops grown in open fields. Protected agriculture provides timely climate management that improves crop yields. The objective of this work was to build and validate a 3D CFD numerical model to understand the spatial distribution of temperatures because of the air flow dynamics inside a typical greenhouse in the Bogotá savanna. Root mean square error (RMSE) and mean absolute percentage error (MAPE) were the statistical indicators used between experimental and simulated wind speed and temperature data. The simulations considered twelve evaluation scenarios that were established based on the climatic conditions characteristic of the study region. The results indicate that under regional conditions of temperature and wind for this type of passive greenhouse, there is a deficient ventilation rate. This rate does not exceed 35 exchanges h−1 compared to the recommended rates for crops, which is between 45 and 60 air exchanges h−1. This renewal rate contributes to the heterogeneity of the microclimatic dynamics of the greenhouse, presenting hot spots with temperature values above 32 °C in all examined scenarios. For the lower air speed scenarios (<1 ms−1), these areas of high temperature can reach up to 50% of the cultivated area. Therefore, it is suggested that future studies should seek technical solutions to optimize the microclimatic conditions of the greenhouse design used in the Colombian floriculture sector.

ACS Style

Edwin Villagrán; Jorge Flores-Velazquez; Carlos Bojacá; Mohammad Akrami. Evaluation of the Microclimate in a Traditional Colombian Greenhouse Used for Cut Flower Production. Agronomy 2021, 11, 1330 .

AMA Style

Edwin Villagrán, Jorge Flores-Velazquez, Carlos Bojacá, Mohammad Akrami. Evaluation of the Microclimate in a Traditional Colombian Greenhouse Used for Cut Flower Production. Agronomy. 2021; 11 (7):1330.

Chicago/Turabian Style

Edwin Villagrán; Jorge Flores-Velazquez; Carlos Bojacá; Mohammad Akrami. 2021. "Evaluation of the Microclimate in a Traditional Colombian Greenhouse Used for Cut Flower Production." Agronomy 11, no. 7: 1330.

Journal article
Published: 14 June 2021 in Fluids
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Determining airflow patterns and their effect on the distribution of microclimate variables such as temperature is one of the most important activities in naturally ventilated protected agricultural structures. In tropical countries, this information is used by farmers and decision makers when defining climate management strategies and for crop-specific cultural work. The objective of this research was to implement a validated Computational Fluid Dynamics (CFD) model in 3D to determine the aerodynamic and thermal behavior of a new protected agricultural structure established in a warm climate region in the Dominican Republic. The numerical evaluation of the structure was carried out for the hours of the daytime period (6–17 h), the results found allowed to define that the CFD model generates satisfactory predictions of the variables evaluated. Additionally, it was found that airflow patterns are strongly affected by the presence of porous insect screens, which generate moderate velocity flows (<0.73 m s−1) inside the structure. It was also identified that the value of the average temperature inside the structure is directly related to the air flows, the level of radiation and the temperature of the outside environment.

ACS Style

Edwin Villagrán; Andrea Rodriguez. Analysis of the Thermal Behavior of a New Structure of Protected Agriculture Established in a Region of Tropical Climate Conditions. Fluids 2021, 6, 223 .

AMA Style

Edwin Villagrán, Andrea Rodriguez. Analysis of the Thermal Behavior of a New Structure of Protected Agriculture Established in a Region of Tropical Climate Conditions. Fluids. 2021; 6 (6):223.

Chicago/Turabian Style

Edwin Villagrán; Andrea Rodriguez. 2021. "Analysis of the Thermal Behavior of a New Structure of Protected Agriculture Established in a Region of Tropical Climate Conditions." Fluids 6, no. 6: 223.

Journal article
Published: 30 April 2021 in International Journal of Heat and Technology
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Insect proof screenhouse is increasingly used in tropical countries with a warm climate, as this type of structure is more economical than greenhouses and gives farmers the opportunity to optimize their production systems. In this work we used an experimentally validated two-dimensional numerical model, the objective was to study the air flow patterns and the thermal and hygrometric behavior of three screenhouses differentiated in their geometric configuration of the roof area and under four (4) outside wind speeds. The results obtained allowed us to find that the airflow speed inside the screenhouse can be maximized with respect to the most critical scenario by 29% for a wind speed of 0.5 ms-1 and up to 292% for a wind speed of 3.0 ms-1, which generates reductions in the average temperature inside the structure of -0.2℃ (0.5 ms-1) and up to -2.2℃ (3 ms-1). While the relative humidity presented values of 1.6% and 6.3% higher for these same speeds.

ACS Style

Edwin Villagran. Two-Dimensional Numerical Study of the Microclimate Generated in Three Screenhouses for the Climatic Conditions of the Colombian Caribbean. International Journal of Heat and Technology 2021, 39, 460 -468.

AMA Style

Edwin Villagran. Two-Dimensional Numerical Study of the Microclimate Generated in Three Screenhouses for the Climatic Conditions of the Colombian Caribbean. International Journal of Heat and Technology. 2021; 39 (2):460-468.

Chicago/Turabian Style

Edwin Villagran. 2021. "Two-Dimensional Numerical Study of the Microclimate Generated in Three Screenhouses for the Climatic Conditions of the Colombian Caribbean." International Journal of Heat and Technology 39, no. 2: 460-468.

Journal article
Published: 23 April 2021 in Sustainability
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The use of covered structures is an alternative increasingly used by farmers to increase crop yields per unit area compared to open field production. In Latin American countries such as Colombia, productive areas are located in with predominantly hillside soil conditions. In the last two decades, farmers have introduced cover structures adapted to these soil conditions, structures for which the behavior of factors that directly affect plant growth and development, such as microclimate, are still unknown. Therefore, in this research work, a CFD-3D model successfully validated with experimental data of temperature and air velocity was implemented. The numerical model was used to determine the behavior of air flow patterns and temperature distribution inside a Colombian passive greenhouse during daytime hours. The results showed that the slope of the terrain affects the behavior of the air flow patterns, generating thermal gradients inside the greenhouse with values between 1.26 and 16.93 °C for the hours evaluated. It was also found that the highest indoor temperature values at the same time were located in the highest region of the terrain. Based on the results of this study, future researches on how to optimize the microclimatic conditions of this type of sustainable productive system can be carried out.

ACS Style

Edwin Villagran; Carlos Bojacá; Mohammad Akrami. Contribution to the Sustainability of Agricultural Production in Greenhouses Built on Slope Soils: A Numerical Study of the Microclimatic Behavior of a Typical Colombian Structure. Sustainability 2021, 13, 4748 .

AMA Style

Edwin Villagran, Carlos Bojacá, Mohammad Akrami. Contribution to the Sustainability of Agricultural Production in Greenhouses Built on Slope Soils: A Numerical Study of the Microclimatic Behavior of a Typical Colombian Structure. Sustainability. 2021; 13 (9):4748.

Chicago/Turabian Style

Edwin Villagran; Carlos Bojacá; Mohammad Akrami. 2021. "Contribution to the Sustainability of Agricultural Production in Greenhouses Built on Slope Soils: A Numerical Study of the Microclimatic Behavior of a Typical Colombian Structure." Sustainability 13, no. 9: 4748.

Agricultural engineering
Published: 01 February 2021 in Revista Ceres
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Deficient ventilation rates and airflow patterns in naturally ventilated greenhouses are the main causes for the generation of inadequate and heterogeneous thermal conditions inside this type of structure. In this research, a numerical study was developed using a two-dimensional computational fluid dynamics model validated in a Colombian greenhouse established under warm climate conditions (PG). The objective of the research was to evaluate the effect on natural ventilation generated by the coupling of two ventilation towers on the PG greenhouse, scenario called MPG. The results indicated that airflow patterns over the region where crops are established in MPG are between 25.9% and up to 142.5% faster compared to PG, which generates ventilation rates up to 57.3% higher in MPG, which is why the temperature distribution under this scenario is more homogeneous inside the structure and its average thermal differential with the outside environment does not exceed 1.1 °C.

ACS Style

Edwin Villagran. Implementation of ventilation towers in a greenhouse established in low altitude tropical climate conditions: numerical approach to the behavior of the natural ventilation. Revista Ceres 2021, 68, 10 -22.

AMA Style

Edwin Villagran. Implementation of ventilation towers in a greenhouse established in low altitude tropical climate conditions: numerical approach to the behavior of the natural ventilation. Revista Ceres. 2021; 68 (1):10-22.

Chicago/Turabian Style

Edwin Villagran. 2021. "Implementation of ventilation towers in a greenhouse established in low altitude tropical climate conditions: numerical approach to the behavior of the natural ventilation." Revista Ceres 68, no. 1: 10-22.

Journal article
Published: 13 October 2020 in UNED Research Journal
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Introducción: En Costa Rica, el uso de estructuras agrícolas protegidas para la producción hortícola se ha incrementado en los últimos años, aunque existe poca información sobre su comportamiento microclimático. Objetivo: Nuestro objetivo fue evaluar el comportamiento de los patrones de flujo de aire y su efecto en la distribución espacial de la temperatura y la humedad relativa dentro de tres tipos de estructuras agrícolas protegidas diseñadas para sistemas agrícolas familiares. Métodos: El estudio se realizó en Guanacaste, Costa Rica, en la época seca de 2019, con un modelo de dinámica de fluidos computacional para el desarrollo de nueve simulaciones de estado estacionario. El modelo 3D se validó experimentalmente mediante la recopilación de información climática en cada uno de los prototipos de estructura. Resultados: Para las tres estructuras, los parámetros de bondad de ajuste entre datos medidos y simulados tuvieron error absoluto medio y error cuadrático medio de 0,21-0,44 °C y 1,65-3,40 % de humedad relativa. Los datos medidos y simulados tuvieron las mismas tendencias; los patrones de flujo de aire dentro de las estructuras dependieron en gran medida de la velocidad y dirección del viento externo. Las condiciones de temperatura y humedad relativa dentro de las tres estructuras tuvieron un comportamiento considerablemente homogéneo. Conclusiones: En las tres pequeñas estructuras agrícolas que probamos, usadas habitualmente en agricultura familiar, no se encontraron diferencias significativas del comportamiento térmico e higrométrico interno en estas condiciones de prueba.

ACS Style

Edwin Andres Villagrán; Rommel Igor León Pacheco; Roberto Ramírez Matarrita; Jorge Eliecer Jaramillo Noreña. Comportamiento microclimático diurno, en temporada seca, de tres estructuras para agricultura protegida en el trópico seco. UNED Research Journal 2020, 12, e2854 .

AMA Style

Edwin Andres Villagrán, Rommel Igor León Pacheco, Roberto Ramírez Matarrita, Jorge Eliecer Jaramillo Noreña. Comportamiento microclimático diurno, en temporada seca, de tres estructuras para agricultura protegida en el trópico seco. UNED Research Journal. 2020; 12 (2):e2854.

Chicago/Turabian Style

Edwin Andres Villagrán; Rommel Igor León Pacheco; Roberto Ramírez Matarrita; Jorge Eliecer Jaramillo Noreña. 2020. "Comportamiento microclimático diurno, en temporada seca, de tres estructuras para agricultura protegida en el trópico seco." UNED Research Journal 12, no. 2: e2854.

Agricultural engineering
Published: 01 October 2020 in Revista Ceres
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The thermal efficiency of naturally ventilated greenhouses is limited due to the permanent exchange of air through the vents, especially during the night hours. The objective of the work consisted in evaluating a system of inflatable air ducts that close the roof vents during the night as a strategy to reduce the energy loss during these hours. For the development of this work, we applied the computational fluid dynamics (CFD) method to a passive multi span greenhouse operating under the dominant nocturnal climatic conditions of the Bogota savannah (Colombia). The results indicated that the use of the ducts system reduces the value of the negative thermal gradient between the interior and exterior of the greenhouse. The CFD model used was validated by comparing experimental data and simulated data and by calculating goodness-of-fit parameters, finding that the numerical model predicts satisfactorily and with an adequate degree of fit the actual thermal behavior of the greenhouse evaluated.

ACS Style

Edwin Villagrán; Carlos Bojacá. Study using a CFD approach of the efficiency of a roof ventilation closure system in a multi-tunnel greenhouse for nighttime microclimate optimization. Revista Ceres 2020, 67, 345 -356.

AMA Style

Edwin Villagrán, Carlos Bojacá. Study using a CFD approach of the efficiency of a roof ventilation closure system in a multi-tunnel greenhouse for nighttime microclimate optimization. Revista Ceres. 2020; 67 (5):345-356.

Chicago/Turabian Style

Edwin Villagrán; Carlos Bojacá. 2020. "Study using a CFD approach of the efficiency of a roof ventilation closure system in a multi-tunnel greenhouse for nighttime microclimate optimization." Revista Ceres 67, no. 5: 345-356.

Journal article
Published: 24 August 2020 in Comunicata Scientiae
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In developing countries, horticultural production in low-altitude tropical climate conditions is often limited by biotic and abiotic factors. In these countries, the implementation of highly technical greenhouses is not feasible due to economic, social and cultural issues related to farmers. Therefore, one of the alternatives that has taken a great boom is the use of screen house structures (SH), although information on the microclimatic behavior of these is still limited. The objective of this research was to use an experimentally validated 3D CFD numerical simulation model to study the thermal behavior and airflow patterns in an SH located in the Colombian Caribbean region during the daytime hours (6:00 to18:00 h). The results obtained showed that the air flow patterns inside the SH showed speed reductions of up to 68% with respect to the speed of the external wind. It was also found that the thermal behavior inside the SH was quite homogeneous, the average temperature values in the structures ranged between 23.9 and 39 °C and the difference with external environment temperature did not exceed 1.8 °C. It was concluded that the implementation of this type of structure could be an useful technological tool for the optimization of horticultural production in low-altitude tropical climate regions.

ACS Style

Edwin Andres Villagran; Jorge Eliecer Jaramillo Noreña. Microclimatic behavior of a screen house proposed for horticultural production in low-altitude tropical climate conditions. Comunicata Scientiae 2020, 11, e3350 -e3350.

AMA Style

Edwin Andres Villagran, Jorge Eliecer Jaramillo Noreña. Microclimatic behavior of a screen house proposed for horticultural production in low-altitude tropical climate conditions. Comunicata Scientiae. 2020; 11 ():e3350-e3350.

Chicago/Turabian Style

Edwin Andres Villagran; Jorge Eliecer Jaramillo Noreña. 2020. "Microclimatic behavior of a screen house proposed for horticultural production in low-altitude tropical climate conditions." Comunicata Scientiae 11, no. : e3350-e3350.

Scientific article
Published: 01 June 2020 in Ornamental Horticulture
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Carnation production in Colombia, the world’s main exporter, takes place entirely in naturally ventilated greenhouses. This type of structure presents non-homogeneous microclimate conditions which differentially affect crop growth and development, which is why this issue has been of great research interest in recent years. The objective was to determine the microclimatic behavior of a passive spatial-type greenhouse used in Colombia for carnation production. The experimental approach included the collection of meteorological data in the external environment through a weather station and in the inside of the greenhouse through a grid of 40 sensors uniformly distributed in a horizontal plane. Data processing to determine the spatial variability of temperature, relative humidity and vapour pressure deficit (VPD) is done by using geostatistical techniques and predicting these variables at unsampled points through the ordinary Kriging method. The main results obtained allowed us to determine that the conditions generated inside the greenhouse are not the optimal ones recommended for carnation production and that, in addition, the behavior of the variables studied shows a heterogeneous distribution, obtaining spatial variations in the horizontal profile evaluated for the night period of 0.5 °C, 9.1% and 1.5 kPa and for the daytime period of 7.2 °C, 42.6% and 1.5 kPa for temperature, humidity and VPD respectively.

ACS Style

Edwin Villagran; Carlos Bojacá. Analysis of the microclimatic behavior of a greenhouse used to produce carnation (Dianthus caryophyllus L.). Ornamental Horticulture 2020, 26, 190 -204.

AMA Style

Edwin Villagran, Carlos Bojacá. Analysis of the microclimatic behavior of a greenhouse used to produce carnation (Dianthus caryophyllus L.). Ornamental Horticulture. 2020; 26 (2):190-204.

Chicago/Turabian Style

Edwin Villagran; Carlos Bojacá. 2020. "Analysis of the microclimatic behavior of a greenhouse used to produce carnation (Dianthus caryophyllus L.)." Ornamental Horticulture 26, no. 2: 190-204.

Scientific article
Published: 01 June 2020 in Ornamental Horticulture
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The spatial behavior of the environmental variables involved in rose production is one of the factors of greatest current interest in the Colombian ornamental sector. The aim of this work consisted in the evaluation of a passive greenhouse through an experimental approach that included the capture and recording of data through a grid of 40 sensors homogeneously distributed inside the greenhouse. The data processing was carried out through the application of geostatistical techniques that allowed to obtain contour plots for 5 levels of radiation intensity. The results of the exploratory analysis showed that the behavior of temperature, relative humidity and vapour pressure deficit are not the most suitable for rose production, mainly for the conditions of the night period where the temperature exhibited values below 12.5 °C, the relative humidity was above 90% and the vapour pressure deficit was below 0.1 kPa. On the other hand in the structural analysis the circular model of theoretical semivariogram was the one that better degree of adjustment presented in comparison with the experimental data finding that a strong spatial dependency exists for the studied variables, the prediction of the not sampled points was made by means of the method of ordinary kriging finding that horizontal gradients of temperature and relative humidity exist inside the greenhouse that increases in magnitude according to the level of radiation arriving to reach values of 6.1 °C and 30.4%.

ACS Style

Edwin Villagran; Carlos Bojacá. Experimental evaluation of the thermal and hygrometric behavior of a Colombian greenhouse used for the production of roses (Rosa spp.). Ornamental Horticulture 2020, 26, 205 -219.

AMA Style

Edwin Villagran, Carlos Bojacá. Experimental evaluation of the thermal and hygrometric behavior of a Colombian greenhouse used for the production of roses (Rosa spp.). Ornamental Horticulture. 2020; 26 (2):205-219.

Chicago/Turabian Style

Edwin Villagran; Carlos Bojacá. 2020. "Experimental evaluation of the thermal and hygrometric behavior of a Colombian greenhouse used for the production of roses (Rosa spp.)." Ornamental Horticulture 26, no. 2: 205-219.

Scientific article
Published: 01 December 2019 in Ornamental Horticulture
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In passive plastic greenhouses that do not have heating systems, the phenomenon of thermal inversion occurs, which means that the temperature inside the greenhouse is lower than the outdoor environment; therefore, the plants are exposed to thermal conditions that are unsuitable for production. The aim of this work was to evaluate passive air climatization alternatives seeking to optimize the nocturnal microclimate of a multi-tunnel Gothic greenhouse projected for rose production in Bogota savannah. The experimental approach included the use of a CFD-2D simulation model successfully validated by recording and archive of temperature data in a greenhouse. A total of 24 steady-state simulations were developed that included 3 nighttime temperature values, 2 sky conditions and 4 greenhouse configurations. The results showed that under the clear sky condition there was a thermal inversion with a value of −0.53 and −1.11 °C for the standard night-time greenhouse configuration. The installation of a thermal screen and porous mesh in the fixed roof vents allowed to control the presence of thermal inversion under clear sky conditions and optimizing the indoor temperature value in the greenhouse under cloudy sky conditions.

ACS Style

Edwin Andres Villagran Munar; Carlos Ricardo Bojaca Aldana. Numerical evaluation of passive strategies for nocturnal climate optimization in a greenhouse designed for rose production (Rosa spp.). Ornamental Horticulture 2019, 25, 351 -364.

AMA Style

Edwin Andres Villagran Munar, Carlos Ricardo Bojaca Aldana. Numerical evaluation of passive strategies for nocturnal climate optimization in a greenhouse designed for rose production (Rosa spp.). Ornamental Horticulture. 2019; 25 (4):351-364.

Chicago/Turabian Style

Edwin Andres Villagran Munar; Carlos Ricardo Bojaca Aldana. 2019. "Numerical evaluation of passive strategies for nocturnal climate optimization in a greenhouse designed for rose production (Rosa spp.)." Ornamental Horticulture 25, no. 4: 351-364.

Journal article
Published: 28 September 2019 in International Journal of Heat and Technology
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ACS Style

Edwin Munar; Carlos Aldana. CFD Simulation of the Increase of the Roof Ventilation Area in a Traditional Colombian Greenhouse: Effect on Air Flow Patterns and Thermal Behavior. International Journal of Heat and Technology 2019, 37, 881 -892.

AMA Style

Edwin Munar, Carlos Aldana. CFD Simulation of the Increase of the Roof Ventilation Area in a Traditional Colombian Greenhouse: Effect on Air Flow Patterns and Thermal Behavior. International Journal of Heat and Technology. 2019; 37 (3):881-892.

Chicago/Turabian Style

Edwin Munar; Carlos Aldana. 2019. "CFD Simulation of the Increase of the Roof Ventilation Area in a Traditional Colombian Greenhouse: Effect on Air Flow Patterns and Thermal Behavior." International Journal of Heat and Technology 37, no. 3: 881-892.

Journal article
Published: 23 September 2019 in Revista Mexicana de Ciencias Agrícolas
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La producción de uchuva (Physalis peruviana L.) en Colombia tiene un alto interés socioeconómico por su potencial comercial y el amplio número de productores de pequeña escala que integran el sistema productivo. Las zonas de cultivo en Colombia están localizadas en los pisos térmicos fríos de los departamentos de Boyacá, Cundinamarca y Antioquía. Recientemente, con el fin de buscar la sostenibilidad en la producción agrícola, la producción agroecológica ha tenido un creciente aumento en las zonas donde se establece este tipo de cultivo. Por lo tanto, el objetivo de esta investigación fue evaluar y comparar los comportamientos postcosecha del fruto de uchuva, obtenido bajo dos sistemas de producción agrícola (convencionales y agroecológicos) establecidos bajo condiciones climáticas de la sabana de Bogotá. La metodología consistió en la medición y cuantificación de las principales variables fisicoquímicas: peso, diámetro ecuatorial, firmeza, pH, sólidos solubles totales, acidez, respiración y pérdida de peso durante los distintos estados de madurez. Estos valores fueron comparados en referencia a lo establecido en la NTC 4580. Los resultados obtenidos para cada propiedad mostraron diferencias significativas entre cada sistema productivo y cada estado de madurez evaluado, encontrando una sensibilidad más elevada al deterioro postcosecha en los frutos obtenidos mediante producción agroecológica.

ACS Style

Aura Jessica Guevara Collazos; Edwin Andres Villagran Munar; Fabian Andres Velasquez Ayala; Kristle Danitza Gonzalez Velandia. Evaluación del comportamiento poscosecha de uchuva provenientes de sistemas de producción convencionales y agroecológicos. Revista Mexicana de Ciencias Agrícolas 2019, 10, 1273 -1285.

AMA Style

Aura Jessica Guevara Collazos, Edwin Andres Villagran Munar, Fabian Andres Velasquez Ayala, Kristle Danitza Gonzalez Velandia. Evaluación del comportamiento poscosecha de uchuva provenientes de sistemas de producción convencionales y agroecológicos. Revista Mexicana de Ciencias Agrícolas. 2019; 10 (6):1273-1285.

Chicago/Turabian Style

Aura Jessica Guevara Collazos; Edwin Andres Villagran Munar; Fabian Andres Velasquez Ayala; Kristle Danitza Gonzalez Velandia. 2019. "Evaluación del comportamiento poscosecha de uchuva provenientes de sistemas de producción convencionales y agroecológicos." Revista Mexicana de Ciencias Agrícolas 10, no. 6: 1273-1285.

Journal article
Published: 22 May 2019 in Ornamental Horticulture
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In tropical regions the production of ornamentals is developed exclusively in naturally ventilated plastic greenhouses, which sometimes leads to inappropriate microclimates with high temperatures and humidity that limit the productive development of plants. The aim of this work was to study air flows, temperature distribution and relative humidity inside an alternative greenhouse designed to produce rose (Rosa spp.). Three configurations of ventilation, side ventilation (SV), roof ventilation (RC) and combined roof and side ventilation (RSV) were analyzed. The methodological development was based on the use of a previously validated CFD-2D numerical simulation model, which showed an adequate fit between the measured and simulated data, obtaining MAE and RMSE values for temperature and relative humidity of 0.44 and 0.47 °C, 3.99% and 4.04% respectively. The results obtained for the predominant climatic conditions of the study region showed that the highest ventilation rates were obtained for RSV, with values of 0.044 and 0.182 m3 m-2s-1, this ventilation efficiency propitiated the generation of a homogeneous microclimate, with temperature and relative humidity values adequate to produce rose (Rosa spp).

ACS Style

Edwin Andres Villagran Munar; Carlos Ricardo Bojaca Aldana. Study of natural ventilation in a Gothic multi-tunnel greenhouse designed to produce rose (Rosa spp.) in the high-Andean tropic. Ornamental Horticulture 2019, 25, 133 -143.

AMA Style

Edwin Andres Villagran Munar, Carlos Ricardo Bojaca Aldana. Study of natural ventilation in a Gothic multi-tunnel greenhouse designed to produce rose (Rosa spp.) in the high-Andean tropic. Ornamental Horticulture. 2019; 25 (2):133-143.

Chicago/Turabian Style

Edwin Andres Villagran Munar; Carlos Ricardo Bojaca Aldana. 2019. "Study of natural ventilation in a Gothic multi-tunnel greenhouse designed to produce rose (Rosa spp.) in the high-Andean tropic." Ornamental Horticulture 25, no. 2: 133-143.

Journal article
Published: 01 July 2018 in Revista U.D.C.A Actualidad & Divulgación Científica
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En Colombia, la producción de flores se lleva a cabo en invernaderos de diferentes tipos y formas geométricas, pero con la una característica común de usar ventilación natural, para control de clima. En la actualidad, el conocimiento sobre el desempeño climático de estas estructuras es escaso. El objetivo del trabajo consistió en evaluar el comportamiento térmico de un invernadero espacial en condiciones de clima diurno y nocturno. La evaluación realizada, mediante modelado computacional, empleó la dinámica de fluidos computacional (CFD, en idioma inglés), aplicada a un invernadero dedicado a la producción de clavel (Dianthus caryophyllus), bajo las condiciones meteorológicas de la Sabana de Bogotá (Colombia). Este enfoque metodológico permitió obtener los patrones de distribución térmica en el interior del invernadero, encontrando que, para las condiciones meteorológicas evaluadas, el invernadero genera unas condiciones térmicas inadecuadas para el desarrollo del cultivo. La validación del modelo CFD, se realizó comparando los resultados de las simulaciones y las temperaturas registradas en el prototipo real del invernadero, obteniendo un grado de ajuste adecuado entre los valores simulados y medidos.

ACS Style

Edwin Andrés Villagran Munar; Corporación Universitaria Minuto De Dios; Carlos Ricardo Bojacá Aldana; Niccole Alejandra Rojas Bahamon; Universidad Jorge Tadeo Lozano. Determinación del comportamiento térmico de un invernadero espacial colombiano mediante dinámica de fluidos computacional. Revista U.D.C.A Actualidad & Divulgación Científica 2018, 21, 415 -426.

AMA Style

Edwin Andrés Villagran Munar, Corporación Universitaria Minuto De Dios, Carlos Ricardo Bojacá Aldana, Niccole Alejandra Rojas Bahamon, Universidad Jorge Tadeo Lozano. Determinación del comportamiento térmico de un invernadero espacial colombiano mediante dinámica de fluidos computacional. Revista U.D.C.A Actualidad & Divulgación Científica. 2018; 21 (2):415-426.

Chicago/Turabian Style

Edwin Andrés Villagran Munar; Corporación Universitaria Minuto De Dios; Carlos Ricardo Bojacá Aldana; Niccole Alejandra Rojas Bahamon; Universidad Jorge Tadeo Lozano. 2018. "Determinación del comportamiento térmico de un invernadero espacial colombiano mediante dinámica de fluidos computacional." Revista U.D.C.A Actualidad & Divulgación Científica 21, no. 2: 415-426.