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Details van artikel 64 van 262 gevonden artikelen
| Titel: |
DESIGN AND CONTINUOUS OPERATION OF A SOLAR CONVECTION DRIER WITH AN AUXILIARY HEATING SYSTEM |
| Auteur: |
Stehli, D. Escher, F. |
| Verschenen in: |
Drying technology |
| Paginering: | Jaargang 8 (1990) nr. 2 pagina's 241-260 |
| Jaar: |
1990 |
| Inhoud: |
A solar drier of the through-draft type (4 trays at 0.5 m2 surface area) with natural air convection and an auxiliary gas heating system was constructed. General relationships between the climatic conditions of the ambient air, product load and drying characteristics were established. Test runs with the drier as continuous equipment were carried out over a period of 24 h, using carrot dice as experimental material. Air flow rates through the dryer between 100 and 140 kg/h and overall drying rates between 1.5 and 2 kg/h were reached. The overall energy efficiency coefficient for the hybrid heating system amounted to 27 % as compared to 31 to 37 % for the solar energy heating alone and to 22 to 27 % for gas heating energy alone. A combination of continuous drying in the first stage with subsequent batch-wise finish drying in the same or a supplementary drier seems to be advantageous. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 64 van 262 gevonden artikelen
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