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Browsing Department of Agricultural Technology by Author "Amaratunga, K.S.P."

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Design and Development of a Closed Cycle Heat Pump Drying System for Industrial Drying of Rice and Chili

Ekanayake, E.M.A.C.; Amaratunga, K.S.P.; Kariyawasam, H.K.P.P.; Fernando, A. J.; Abeyrathna, R. M. R. D. (2019)

A closed cycle heat pump drying system was developed to study the thin layer and deep bed heat pump drying characteristics of rice and chiliin industrial scale. Two units of dehumidifiers assembled with heat pumps with ...
Design and Development of a Far Infrared Rice Flour Gelatinizer

Abeyrathna, R.M.R.D.; Amaratunga, K.S.P.; Kariyawasam, H.K.P.P. (2017)

A far infrared continuous type rice flour gelatinizer was developed and tested. At presentrice flour is roasted in batch process using electricity or firewood in industry. The existing batch type conduction heating ...
Design and Development of a Heat Pump Based Moisture Control System for Industrial Drying of Medicinal Plants

Ekanayake, E.M.A.C.; Amaratunga, K.S.P.; Kariyawasam, H.K.P.P.; Kumara, M.G.M; Bandara, H.L.A.P.G.I.L (2018)

Moisture control is one of the most common preservation methods used for enhancing the shelf life of agricultural produce. When processing or storing of fresh produce, a special attention has to be given in maintaining ...
Rice Grain Cooling Using Intermittent Adsorption and Desorption of Water Vapour: Development of a Mathematical Model

Kariyawasam, H.K.P.P.; Amaratunga, K.S.P.; Basnayake, B.F.A.; Priyadarshana, L.B.M.D.L.; Galahitiyawa, D.D.K.; Karunasinghe, K.G.W.U. (2014)

A one-dimensional heat and mass transfer model was developed for predicting grain temperature in a deep bed of paddy exposed to intermittent adsorption and desorption cycles and the numerical solutions of the model ...
Rough Rice Grain Cooling Using Vaporization of Temporarily Deposited Surface Water

Kariyawasam, H.K.P.P.; Amaratunga, K.S.P.; Basnayake, B.F.A. (2016)

A method of grain cooling by vaporizing temporarily deposited surface water on rough rice was tested in this study. The surface water was deposited by ventilating rough rice grains with saturated air (humidification) for ...
Sorption Characteristics of Polished Rice in a Fluidized Bed

Kariyawasam, H.K.P.P.; Amaratunga, K.S.P.; Bandara, D.M.S.P.; Dissanayake, T.M.R. (2016)

Applicability of fluidization methods in rewetting low moisture polished rice was investigated using a recirculating fluidized bed. The sphericity of polished rice was calculated using Ergun's equation to determine the ...

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