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Traditional drying ways for drying of agricultural products and consumption of large amount of energy in conventional dryers result in reducing of quality and increasing of final cost of products. Utilizing of Heat Pump Dryers can improve the quality of products as well as decreasing the final production costs by means of energy saving. In the Heat Pump Dryer a high quantity of heat needed for drying of products can be shed off or saved from the latent and sensible heat of air leaving the drying chamber. In this article primary data of configuration such as relative humidity of air, input power of compressor, power of fan, recirculation air ratio (RAR) was obtained. Regarding to this primary data and dehumidifying specifications of plum, an experimental model of dryer was designed. The results indicated that the optimum temperature of drying for plums is in vicinity of 70-80°C; also specific moisture extraction rate (SMER) of designed dryer was notably more than conventional types of dryers in respect to saving the energy.
Rocznik
Tom
Strony
63--65
Opis fizyczny
Bibliogr. 9 poz.
Twórcy
autor
autor
autor
autor
- Department of Agricultural Technical Engineering, Abureihan campus University of Tehran, chegini@ut.ac.ir
Bibliografia
- [1] Stroman, I., Kramer. (1994). New applications of heat pumps in drying process. Drying Technology. 12 (4): 889-901
- [2] Raghavan, G.S., Valerie, O. (2004). Drying of agro-products and grains. Proceeding of IWSID 2004, Mumbi, India
- [3] Mujumdar, A.S. (2001). Drying Technology in agriculture and food science. Science Publishers, Inc, Enfield, USA.313 p.
- [4] Cinquanta, L., M.D. Matteo, M. Esti. (2002). Physical pre-treatment of plum (prunus domestica). Part 2. Effect on the quality characteristics of different prune cultivars. Food Chemistry, 79:233-238
- [5] Lambertotten, J.S, Gotthardova,J., P. Homola.(1999).Model comparisons of equilibrium moisture content of prunes in the temperature range of 15-45 °C . Stored products Research, 35:27-36
- [6] Henry T. Sabarez, William E. Price. (1999). A diffusion model for prune dehydration. Stored products Research, 45:167-172
- [7] Jangam.,S.V., Waje, S., Thorat.B. (2004).Heat Pump Drying: Some Design Aspects.Proceeding of IWSID 2004. Mumbi, India
- [8] Swensabai, P. and Prasertsan, S. (2003).Effects of component Arrangement and Ambient and Drying conditions on the performance of Heat Pump Dryers. Drying Technology.21 (1): 103-127
- [9] Sosle,V., Raghavan,G. and R. Kittler. (2003). Low-Temperature Drying Using a Versatile Heat Pump De-humidifier. Drying Technology.21 (3): 539-554.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAR0-0028-0083