performance analysis of a solar dryer equipped with a recycling air system and desiccant chamber
نویسندگان
چکیده
drying is a high energy consuming process. solar drying is one of the most popular methods for dehydration of agricultural products. in the present study, the performance of a forced convection solar dryer equipped with recycling air system and desiccant chamber was investigated. the solar dryer is comprised of solar collector, drying chamber, silica jell desiccant chamber, air ducts, fan and measuring and controlling system. drying rate and energy consumption in three levels of air temperature (40, 45 and 50 oc) and two modes of drying (with recycling air and no-recycling with open duct system) were measured and compared. the results showed that increasing the drying air temperature decreased the drying time and increased the energy consumption in the mode of non-recycling air system. the dryer efficiency and drying rate were better in the mode of recycling air system than open duct system. the highest dryer efficiency was obtained from drying air temperature of 50 oc and the mode of recycling air system. in general, the efficiency of solar collector and the highest efficiency of the dryer were 0.34 and 0.41, respectively.
منابع مشابه
a phonological contrastive analysis of kurdish and english
deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...
15 صفحه اولDevelopment of a Pilot Plant Solar Liquid Desiccant Air Conditioner for the Northern Region of Iran
In a 10-ton capacity pilot plant solar liquid desiccant air conditioner (LDAC) developed, dehumidification of the outside air is achieved through a honeycomb packed-bed heat and mass exchanger, using lithium chloride solution as the desiccant. The dry air obtained from the dehumidification process is evaporative cooled inside a cooling pad and directed into the conditioned space. The dilute sol...
متن کاملa comparison of teachers and supervisors, with respect to teacher efficacy and reflection
supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...
15 صفحه اولThermal Performance of a Double-pass Solar Air Heater
This study analyzes the thermal performance of solar thermal energy using double-pass absorber plate in Sanandaj, Iran. To this end, a mathematical model was encoded according to the energy and exergy balance equations and solved by MATLAB software. Given the environmental conditions and radiation intensity of a winter day in Sanandaj, the effects of external parameters such as radiation intens...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
ماشین های کشاورزیجلد ۳، شماره ۲، صفحات ۹۲-۰
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023