Posts

Heat Transfer Using Microchannels.

Image
  What is Microchannel. A microchannel is a channel with a  hydraulic diameter  below 1 mm, usually 1–99 μm.  Microchannels are used in fluid control  and heat transfer   They are more efficient than their 'macro' counterparts, because of a high surface-area-to-volume ratio yet pose a multitude of challenges due to their small size.  A heat exchanger is a device that is used to transfer thermal energy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid, at different temperatures and in thermal contact. When properly designed and utilized, micro-channels can distribute the flow precisely among the channels, reduce flow travel length, and establish laminar flow in the channels while achieving high heat transfer coefficients, high surface area-to-volume ratios, and reduced overall pressure drops. Fig No 1 Microchannel Types of Microchannels The shape, size and structures of microchannels var...
Post a Comment
Read more

Heat Transfer using Microchannels.

Image
 What is Microchannel. A microchannel is a channel with a  hydraulic diameter  below 1 mm, usually 1–99 μm.  Microchannels are used in fluid control  and heat transfer  They are more efficient than their 'macro' counterparts, because of a high surface-area-to-volume ratio yet pose a multitude of challenges due to their small size.  A heat exchanger is a device that is used to transfer thermal energy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid, at different temperatures and in thermal contact. When properly designed and utilized, micro-channels can distribute the flow precisely among the channels, reduce flow travel length, and establish laminar flow in the channels while achieving high heat transfer coefficients, high surface area-to-volume ratios, and reduced overall pressure drops. Fig No 1 Microchannel Types of Microchannels The shape, size and structures of microchannels vary with ...
Post a Comment
Read more

ADVANCED MACHINING PROCESS

Image
 What is Machining? Machining is the process used to remove material, typically metal, to create parts for machines, tools, transportation, and more. Machine shops and machinists use equipment like lathes, mills, and drill presses to turn material into useful tools using precise cuts. Fig no 1 Machining (source www.theengineerspost.com) What is Advanced Machining? Advanced machining processes are material-removing processes different from conventional machining processes, in which a well-guided wedge-shaped tool removes the material in the form of chips by producing contact stresses. There are a variety of ways in which material is removed using these processes. One method is producing stresses in the workpiece by different means but not with a well-guided wedge-shaped tool. There are several processes in this category, e.g., ultrasonic machining, water jet machining, abrasive jet machining, laser beam machining, and chemical machining.   Fig no 2 Advanced Machining (so...
14 comments
Read more