In the realm of materials testing, the assessment of grease consistency is crucial for various industrial applications, ranging from automotive to machinery lubrication. A grease penetrometer, a device designed to measure the consistency of grease, plays a pivotal role in this regard. This article delves into the workings of the grease penetrometer, explores the ASTM … Read more
The calorific value (CV) of a fuel is a characteristic of fuel which is defined as the energy liberated per kg of fuel burnt. Fuels are found in three-phase viz. solid, liquid, and gaseous. Junker’s calorimeter is used to measure the CV of gaseous fuels. This article helps you to know the process to determine … Read more
The nature and analysis of flow depend on the thermophysical properties such as the viscosity of the fluid being considered. There are various methods for the determination of fluid viscosity, namely the capillary tube method, falling sphere method, rotating cylinder method, or Redwood viscometer. Viscosity measurement is important for a wide range of applications in … Read more
This video shows how an anemometer measures air velocity. This anemometer is of analog meter which gives the total linear distance that the rotor moves during a prescribed amount of time. One needs to see the pointer movement and have to record the time. The division of linear movement of air and time gives the … Read more
This video shows the eccentric machining of the copper plates. Big size hole is created by drill and followed by a boring operation.
Cutting SS wire mesh or copper wire mesh for regenerator of any cryocooler requires very careful machining. The accurately sized mesh can be cut by holding the mesh which is in the raw material into the headstock and tailstock with the support of a wooden piece. The turning of it gives the required size mesh.
The brazing of dissimilar metals is shown in this video. It shows the silver brazing to join the Stainless steel SS 304 tube of 0.4 mm diameter with 22 mm thick copper plate. The silver rod is used as filler material. The required temperature for proper silver brazing is 800 to 900 degree C. Both … Read more
Humidity measurement is one of the most important factors while designing any refrigeration system. Have a look at the hair type hygrometer for the measurement of humidity.
