An Engineering Feat that Works on Archimedes’ Principle By TK NG Archimedes’ Principle Archimedes’ principle states that the upward buoyant force exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces. Reasoning is straight …
Cavitation and Valve Selection Considerations By TK NG Valves are generally used for flow or pressure control of fluid. In Fig 1, the amount of fluid flows through the valve can be controlled by varying the plug to seat clearance (i.e. the flow passage) at the valve port. …
Insulation Practices for Gas and Liquid Refrigerant Pipes of Split Type Air Conditioners By TK NG CorrigendumTypos found in the earlier version of this article have been corrected in dark green. Do you know the gas and liquid refrigerant pipes between the indoor and outdoor …
Bicycle Ride Balancing By T.K. NG When you started learning to ride a bicycle, had someone told you that you should turn your front wheel to the right if your bicycle undesirably leaned to the right, and the same principle applied for left lean? You should agree that …
Separating A Noise Source from the Background Noise By TK NG When measuring the noise levels at different octave bands of an operating machine such as air-cooled chiller on site, what you can get are the combined sound pressure levels of the machine and the surrounding background. To …
9th Episode – Maritime Labour Convention By Tat YEUNG It is Tat Yeung again, an ex-seagoing marine engineer. In our daily life we use a lot of things transported to us from overseas, the vehicle you travel in, the petrol/fuel to power the vehicles, …
8th Episode – Marine Pollution Prevention By Tat YEUNG It is Tat Yeung again, an ex-seagoing marine engineer. Protecting the environment is a very concerned topic. There were cases of major pollutions connected to ships. What has the maritime industry done to address the issue? It …
7th Episode – International Maritime Convention, SOLAS By Tat YEUNG It is Tat Yeung again, an ex-seagoing marine engineer. There are numerous international conventions laying down the standards for the member states to implement on the shipping industry. Each convention aims at a particular aspect of the …
6th Episode – International Maritime Regulations By Tat YEUNG It is Tat Yeung again, an ex-seagoing marine engineer. Commercial ships trade across the oceans to load or unload cargoes in the ports of various countries. No two countries are identical in their regulatory systems, let alone regulating …
Discharge Ductworks Arrangement for Air Cooled Condenser with Fan Cycling Control By TK NG Air cooled condensers of air-conditioning/refrigeration systems installed in the vicinity of inhabited areas are usually provided with acoustic treatment to minimize the noise nuisance generated. For air cooled condensers equipped with fan cycling control …