The aim of this study was to develop a user-friendly model for spray drying that can aid in the development of a pharmaceutical product, by shifting from a trial-and-error towards a quality-by-design approach. To achieve this, a spray dryer model was developed in commercial and open source spreadsheet software. The output of the model was first fitted to the experimental output of a Büchi B-290...

Abstract Recently, microwave-assisted drying is an emerging technique that can help to accelerate the water removal process. In this paper, a experimental study of carrot slides presented. A heat pump dryer fabricated where agent temperature, supplied microwave power, and circulative fan speed are easy adjust. series 61 experiments conducted with range temperature from 35 °C 45 °C, power 0 1.25...

In this paper, life cycle cost analysis of a self sustained hybrid photovoltaic/thermal (PV/T) greenhouse dryer has been carried out. The hybrid PV/T integrated greenhouse (roof type even span) dryer, designed and constructed at Solar Energy Park, Indian Institute of Technology, New Delhi (28 0 35 N, 77 0 12 E, 216 m above MSL), India, has been used to dry Thompson seedless grapes under forced ...

A domestic solar dryer with transparent external surfaces was designed, built and tested. Thin-layer drying models that describe the drying phenomena in a unified way, regardless of the controlling mechanism; have been used to estimate the drying period for several products. Temperature of the drying medium is one of the factors that affect the drying rate constant of the exponential model. Thi...

BACKGROUND During general anesthesia, a heated breathing circuit (HBC) is used to replace the heat and moisture exchange function of the upper airway. One HBC uses an air dryer filter that employs silica gel (SG) as a desiccant. SG is capable of adsorbing many organic compounds. Therefore, we undertook an in vitro study of the adsorption of desflurane by SG filters. METHODS An HBC was connect...

Within a 53 home monitored sample, long-term energy use of electric resistance clothes dryers was sub-metered. Average measured dryer energy use was 3% of total household energy or 814 kWh/year. Hourly dryer electrical demand profile showed large coincidence with utility summer afternoon peak and significant increases over weekends versus weekdays. After collection of baseline data, electric re...

The purpose of the paper is to present a concept of energy efficiency and financial evaluation of counterflow dryer. Energy efficiency and many other efficiency indexes of the dryer and all additional devices like heater, heat exchangers, tubing and fans are calculated. Expert system provides also the financial evaluation of the investment. Many investments could be considered. The system provi...