Green Drying of Tomato Slices by Modified Indirect Air Solar Heater

efficient solar air heater with perforated absorber for crop drying

outdoor experiments on a once-through single glazed solar air heater with perforated metal absorber plate were conducted to determine the practical effect of absorber plate porosity as well as suction air flow rate on the collector thermal efficiency and its total pressure drop. three aluminum absorber plates were made perforated by drilling circular holes with different diameter/pitch ratios i...

سینتیک افت رطوبت و مقایسه کیفیت ورقه‌های گوجه‌فرنگی در مرحله خشک‌شدن با سه روش: خشک‌کردن خورشیدی، آفتابی سنتی و هوای خشک

Sun drying is a well-known food preservation technique that reduces the moisture contents of agricultural products. Shrinkage, rehydration ability and color of food materials during air drying adversely affect the quality of the dried products. Since all fresh tomatoes can not be consumed at the time of harvest, preservation provides a larger market, allowing consumers to buy the preserved toma...

سینتیک افت رطوبت و مقایسه کیفیت ورقه‌های گوجه‌فرنگی در مرحله خشک‌شدن با سه روش: خشک‌کردن خورشیدی، آفتابی سنتی و هوای خشک

Sun drying is a well-known food preservation technique that reduces the moisture contents of agricultural products. Shrinkage, rehydration ability and color of food materials during air drying adversely affect the quality of the dried products. Since all fresh tomatoes can not be consumed at the time of harvest, preservation provides a larger market, allowing consumers to buy the preserved toma...

Performance characteristics of a transpired solar air heater

Thermal 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...