With and without reflectors, the drying efficiency of the developed solar dryer was found to be 59.4% and 50.09% respectively, which are much higher than that of other general solar dryers (∼35%). However, the drying rate varied between 1.525 to 0.005 g of water evaporated per gram of dry matter per hour when reflectors were used and 1.397 to In solar tunnel dryer specially stabilized, reinforced plastic or synthetic combined with biogas grey gravel is placed in the mouth of caoutchouc is given preference. The useful life-span does the tube which blows hot air in to the drier, which helps to usually not exceed 2-5 years. store heat for some more time. 5. Solar Dryer Tunnel Type price in Nepal Best solar Dryer price in Nepal. Solar Dryer price in Nepal Overall, solar tunnel dryers are a good option for people who want to dry food in a sustainable and energy-efficient way. They are versatile, easy to use, and relatively inexpensive to build and operate. However, it is important to keep in mind that they are weather dependent. Sample dried in sun had single falling rate pattern whereas samples in solar and tunnel dryer exhibited a second falling rate pattern. The values of R2 ranged from 0.872 - 0.989, χ2(1.4E-34 - 0. fully Loaded copra on the solar tunnel dryer. 3. Experimental analysis of solar tunnel The analysis of solar tunnel for four consecutive days is tabulated in Table -1 to Table 4. Table .1 Analysis of solar tunnel on day-1 TIME (Hr) Moisture (%) Tamb (ᵒc) Tdryer (ᵒc) Humidity Solar Constant 9AM 55.68 28.5 38.5 51 362 ukpFY.

solar tunnel dryer price