APPLICATION OF PHASE CHANGE MATERIAL IN CONVECTIVE SOLAR UNIT DURING YOGURT MANUFACTURING
| dc.contributor.advisor | CHITRANAYAK | |
| dc.contributor.author | PRATEEK | |
| dc.date.accessioned | 2024-08-19T04:43:31Z | |
| dc.date.available | 2024-08-19T04:43:31Z | |
| dc.date.issued | 2023 | |
| dc.description.abstract | This study aims to select an appropriate phase change material (PCM) and container material for the solar based yogurt fermentation unit. The study was conducted in four phases. In the first phase, several PCMs were studied from the literature, out of which three PCMs, i.e., Paraffin wax, Bees wax, and palm oil, were selected. Melting characteristics of the chosen PCMs were studied to determine their suitability for the intended application. The melting temperatures of the investigated phase change materials (PCMs) were 59.3°C for paraffin wax, 68.1°C for beeswax, and 43°C for palm oil. Melting time was found lowest for palm oil (20 mins), followed by paraffin (35 mins) and beeswax (48 mins). The second phase focused on enhancing the thermal conductivity of the selected PCM. Metallic Inclusion was utilized to enhance the thermal conductivity of PCM. The Experiment design and parameters optimization was carried out by RSM using Design Expert. 13.3 % metallic inclusion was found optimum for thermal conductivity enhancement. In the third phase, suitable container material was selected by comparing the heating and cooling time for different containers. PET was found ideal as it facilitates delayed heat release during PCM discharging (240 mins) compared to SS 304 (150 mins). In the fourth phase, the performance of the PCM integrated system was evaluated. The integrated system successfully maintained the required yogurt incubation temperatures for 10-11 hours. The prepared yogurt was analysed to assess its quality and consistency in terms of texture, taste, and overall product attributes. With the application of the PCM, the operational duration of the system was extended by an additional 3 hours, resulting in a notable increase of approximately 26.6%. It enabled the system to continue functioning even during late evening hours in absence of sunlight. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810213347 | |
| dc.language.iso | English | |
| dc.pages | 107 p. | |
| dc.publisher | ICAR-NDRI, KARNAL | |
| dc.sub | Dairy Engineering | |
| dc.theme | MASTER OF TECHNOLOGY | |
| dc.these.type | M.Tech. | |
| dc.title | APPLICATION OF PHASE CHANGE MATERIAL IN CONVECTIVE SOLAR UNIT DURING YOGURT MANUFACTURING | |
| dc.type | Thesis |