Design, construction, and evaluation of a mixed mode solar kiln with black-painted pebble bed for timber seasoning in a tropical setting

Ugwu, Samson Nnaemeka; Ugwuishiwu, BO; Ekechukwu, O. V.; Njoku, Howard O.; Ani, A. O.

doi:10.1016/j.rser.2014.09.033

Cited by 33 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this dryer, the product was loaded below the absorber plate, which prevented the problem of discoloration due to irradiation by direct sunlight. Ugwu et al (2015) designed and evaluated a mixed-mode solar kiln with black pebble bed as absorber and storage for wood seasoning in tropical areas. It was found that the temperatures inside the dryer and solar collector were higher than the ambient temperature at all hours of the day.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and performance analysis of thin layer drying of bitter gourd in sensible storage based indirect solar dryer

Vijayan¹,

Arjunan²,

Kumar

2016

Innovative Food Science & Emerging Technologies

166

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and performance analysis of thin layer drying of bitter gourd in sensible storage based indirect solar dryer

Vijayan¹,

Arjunan²,

Kumar

2016

Innovative Food Science & Emerging Technologies

166

View full text Add to dashboard Cite

“…Moisture reduction from wood improves its mechanical properties such as hardness, shear strength, compressibility strength, tensile strength etc. Over the years, various moisture removal methods have been used, they include uncontrolled (air drying) and controlled (kilns) [1].…”

Section: Introductionmentioning

confidence: 99%

Engineering properties of wood under different drying methods

Ugwu¹,

Uduji²,

Nwoke³

et al. 2021

Global J. Eng. Tech. Adv.

View full text Add to dashboard Cite

This project work focuses on the comparison of the engineering properties of Pyrus communis under solar and air-drying method. Green samples of the wood were dried simultaneously in both solar kiln and open air for 15 days. The daily moisture content reduction (%MC) under both drying conditions were observed and recorded. Mechanical tests (shear strength, compressive strength, hardness and tensile strength) were conducted. The results showed that open air-dried woods attained fibre saturation point (30-25%MC) within three days. Timbers dried in solar kiln attained lower %MC (12.9, 11.0, 14.3, 12.3) when compared to open-air dried samples (22.1, 18.5, 21.1, 17.1). For all the mechanical tests conducted, solar kiln dried timber had higher mechanical properties than the open air-dried woods.

show abstract

“…Apart from the conventional research work on dryers, some typical category of dryers were also developed, and one such dryer developed was cylindrical glass drying section chamber developed and a flat plate collector (Air heater) made of galvanised steel sheet as absorber) was used [19] and the advantage is, cylindrical glass drying chamber receives sun's rays from all the directions without any tracking mechanism. Mathematical and numerical model analysis to understand drying phenomenon were also carried out for the drying models of cylindrical tunnel type [20], direct mode, indirect mode and mixed mode type of dryers [21].…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Solar Crop Dryer Integrated with Oil Bath

S¹,

Tjprc²

2019

IJMPERD

View full text Add to dashboard Cite

Solar drying is one of the important applications of solar energy used for crop drying applications. In this study, an oil bath has been integrated with solar dryer and experimental work has been conducted and analysis is made for the performance. The design and fabrication details of the developed dryer system are explained. The main objective of this study is to improve the performance of solar dryer by using an oil bath for the collection and storage of sun's energy. The use of oil bath helps to avoid sudden fluctuations in the air temperature inside the dryer. The relative humidity of incoming atmospheric air decreases when passes through the oil bath, and this enables to remove more amount moisturefrom the product to be dry . The crops used during the experiments were potato slices (2 kg) and ginger (2 Kg) and the air velocity maintained was 10 m/s. Potato slices of upper and lower tray have taken the drying time of 5 hours and 6 hour to reach safe storage moisture content of below 15 % whereas, ginger of upper tray and lower tray have taken drying time of 9 hours and 10 hours to reach moisture content of below 15. The maximum value of instantaneous of the collector (Oil bath) efficiency reported was 57. 48 % and minimum value was 18.59 %.

show abstract

Design, construction, and evaluation of a mixed mode solar kiln with black-painted pebble bed for timber seasoning in a tropical setting

Cited by 33 publications

References 26 publications

Mathematical modeling and performance analysis of thin layer drying of bitter gourd in sensible storage based indirect solar dryer

Mathematical modeling and performance analysis of thin layer drying of bitter gourd in sensible storage based indirect solar dryer

Engineering properties of wood under different drying methods

Design and Development of Solar Crop Dryer Integrated with Oil Bath

Contact Info

Product

Resources

About