No abstract

Aim of the present study was to evaluate the feeding value of spent coffee waste in ruminants. Nutrient composition of spent coffee waste (SCW) revealed that it contains Crude protein, Ether extract, Crude fibre and Nitrogen free extract at 12.02%, 9.23%, 56.20% and 21.73% respectively. SCW had higher neutral detergent fibre, acid detergent fibre and Lignin content of 79.67, 68.54 and 34.08% respectively when compared with conventional feeds and also contained high amount of Acid detergent insoluble protein (67.54%). Total phenol content in SCW was 0.35%. In vitro gas production studies revealed that SCW has significantly (P<0.01) lower gas production potential (2.13 ml), in vitro true dry matter digestibility (17.48%) and ammonia nitrogen (1.75 mg/100ml) content when compared with conventional feeds like maize. It can be concluded that spent coffee waste as such has less potential as a concentrate feed source in ruminants.

No abstract

Since the moisture present in the vegetables and fruits are initially more, they are endangered to spoil quickly. The ability of the desiccant materials to absorb moisture can be used for drying. By incorporating desiccants in the drying process, drying can also be carried out during no sunshine periods. The absorbed moisture can be desorbed by passing hot air stream through the desiccants. A cylindrical desiccant mould with varying diameters of concentric holes, comprising of vermiculite (20%), bentonite (60%), cement (10%) and calcium chloride (10%) has been prepared. The sizes of the concentric holes were made in three different diameters as 6, 12 and 18 mm. Different mass flow rates and temperatures were followed to conduct the experiment as per Box- Benhen design. The ANOVA analysis was performed to arrive the percentage of contribution of influence over the desorption. Various indicators including the percentage of error between measured and predicted responses were employed to uphold the accuracy of the proposed mathematical model. The extensive statistical study reveals that the 6 mm of hole diameter, 0.003 Kg m−2s of mass flow rate and 60 °C temperature are the optimal parameters for the solid desiccant to regenerate effectively.

The present work deals with study the heat transfer and pressure drop of the triangular microchannel heat sink(MCHS), along different working fluids. The nanofluids such as CuO and Al2O3are used as coolants to enhance the performance of triangular microchannel heat sinks.The modeling and analysis were done with the help of Solid works. The heat transfer performance of the triangular fins were studied with the Reynolds number varying from 96 - 460. Thenumerical result shows that the triangular oblique finned microchannel heat sink has large heat transfer rateof 12.9 % for varying Reynolds number when compared to a straight channel. Similarly, the pressure drop also increases with 38.2% for triangular microchannel flowing nanofluid. Consequently triangular microchannel is enhancing the heat removed in electronics chip cooling