Results 21 to 30 of about 71,709 (315)

Measurements of PM2.5 with PurpleAir under atmospheric conditions [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
The PurpleAir PA-II unit is a low-cost sensor for monitoring changes in the concentrations of particulate matter (PM) of various sizes. There are currently more than 10 000 PA-II units in use worldwide; some of the units are located in areas where
K. Ardon-Dryer   +3 more
doaj   +1 more source

Rancang Bangun Pengering Gabah Menggunakan Panas Hasil Pembakaran Limbah Sekam

open access: yesPatria Artha Technological Journal, 2021
Most of the drying process in Indonesia still relies on the direct drying method in the sun, the method is simple depending on weather conditions, requires large land and takes 3 to 4 days dry.
Fadhli Rahman   +3 more
doaj   +1 more source

Performance Comparison of Tray, Bed and Integrated Drying Chamber in Closed Loop Heat Pump Dryer for Bermuda Grass [PDF]

open access: yesE3S Web of Conferences, 2023
Drying plays a crucial role in various industries such as food production, agriculture, Siddha, Ayurveda, and medical fields. To achieve controlled drying conditions, a heat pump dryer is considered an effective method, allowing for precise control of ...
M Ashok Kumar   +4 more
doaj   +1 more source

Performance of a solar dryer

open access: yesEnergy, 1994
A new solar dryer, which consists of a solar air heater and a drying chamber, was developed and used for drying agricultural products. The present drying system was successfully tested using sultana grapes, green beans, sweet peppers, and chilli peppers. Traditional sun-drying experiments were employed. The drying curves of the solar dried products are
TIRIS, C   +3 more
openaire   +3 more sources

Integrating heat recovery from milk powder spray dryer exhausts in the dairy industry

open access: yes, 2011
Heat recovery from milk powder spray dryer exhausts has proven challenging due to both economic and thermodynamic constraints. Integrating the dryer with the rest of the process (e.g.
Walmsley, Michael R.W.   +5 more
core   +1 more source

Simultaneous use of convection and radiation heat transfer for Iranian pistachio drying using catalytic heater - numerical and experimental study

open access: yesFrontiers in Mechanical Engineering
This study presents a comprehensive investigation into the simultaneous use of convection and radiation heat transfer for Iranian pistachio drying using a catalytic heater.
Vahid Ebrahimpour, Kazem Esmailpour
doaj   +1 more source

Performance and sustainability evaluation of rice husk-powered dryer under natural and forced convection mode

open access: yesEngineering and Applied Science Research, 2023
Sun drying method has been used for drying agricultural commodities for centuries worldwide. The sun drying can be performed either by direct drying of the product under sunlight or drying using a solar collector-based dryer.
Fredy Surahmanto   +3 more
doaj  

Obviation Across Clause Boundaries in Kutenai

open access: yesKansas Working Papers in Linguistics, 1997
Kutenai has an obviation system reminiscent of the system found in Algonquian languages in which at most one third person nominal in a clause is proximate and others are obviative.
Dryer, Matthew S.
doaj   +1 more source

Solar dryer with thermal storage and biomass-backup heater

open access: yes, 2007
An indirect type natural convection solar dryer with integrated collector-storage solar and biomass backup heaters has been designed, constructed and evaluated.
Ngwalo, G., Madhlopa, A.
core   +1 more source

An Enhanced Smith Predictor Based Control System Using Feedback-feedforward Structure for Time-delay Processes

open access: yesThe Journal of Engineering Research, 2017
This paper presents enhanced Smith predictor based control systems (SPBCSs) for processes with a time-varying or fixed time delay. This work focuses on improving the arrangement and asynchrony of SPBCS components rather than the design of the predictor ...
M. Mohammadzaheri, R. Tafreshi
doaj   +1 more source

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