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Bhalodiya, V.B.
- Performance Evaluation of Mechanized Manufacture of Bottle Gourd Halwa
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Authors
Affiliations
1 Department of Agricultural Engineering, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
2 Regional Research Station (A.A.U.), Anand (Gujarat), IN
3 Department of Agricultural Engineering, Anand Agricultural University, Anand (Gujarat), IN
1 Department of Agricultural Engineering, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
2 Regional Research Station (A.A.U.), Anand (Gujarat), IN
3 Department of Agricultural Engineering, Anand Agricultural University, Anand (Gujarat), IN
Source
International Journal of Agricultural Engineering, Vol 13, No 1 (2020), Pagination: 113-120Abstract
India has world’s largest production of milk and 50-55 per cent of its production being used for the manufacture of different Traditional Indian Dairy Products (TIDP). The manufacture of traditional dairy products on large scale requires mechanization and optimization of operating conditions in order to get uniform acceptable quality. Scraped Surface Heat Exchanger (SSHE) of appropriate design is found suitable for production of highly viscous dairy products. Bottle gourd Halwa is one of the Traditional Indian Dairy Products (TIDP) prepared from grated bottle gourd cooked with Ghee, sugar, Khoa, and flavoured by spices like cardamom. The various unit operations involved in preparation of bottle gourd Halwa are shredding, cooking and desiccation with sugar and Khoa. The study was taken to evaluate heat transfer performance of the SSHE during manufacture of bottle gourd Halwa under variable operating conditions. The horizontal SSHE was used for the manufacturing of Halwa using the recipe standardized by Response Surface Methodology. The performance of the SSHE was evaluated at different scraper speeds and operating steam pressures. The rate of evaporation ranged between 12.379 and 19.947 kg water/h during manufacturing of Halwa in SSHE at different operating conditions. It was observed that overall heat transfer co-efficients (U-values) increased with the increase in scraper speed and steam pressure in range of 406 - 600 W/m2K. The values of steam consumption and electrical power consumption under different operating conditions during manufacture of bottle gourd Halwa ranged from 18.56 to 36.76 kg/h and 0.398 to 0.410 kWh, respectively. The values of specific steam consumption ranged from 1.659 to 1.697 kg steam/kg water evaporated. The total heat losses during manufacture of Halwa in the SSHE ranged from 20.84 to 23.83 per cent of the heat input at different steam pressures and scraper speeds.Keywords
Bottle Gourd Halwa, Scraped Surface Heat Exchanger, Energy Analysis, Sensible Heat
References
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