Reverse Osmosis Generators For Ships - The Working Principle

Written by johnhansen Friday, 08 January 2010 18:42

Ships are always surrounded by literally unlimited quantity of water, except perhaps when undergoing drydock repairs. Since there are human beings on board on all types of ships, we certainly need drinking water on board. We have already studied about the machine known as the fresh water generator which is used to produce pure water out of the salty sea water.

Thermostatic Expansion Valve or TEV

Written by johnhansen Friday, 08 January 2010 18:34

Thermostatic expansion valve is one of the most commonly used throttling devices in the refrigeration and air conditioning systems. Let us see the details of this valve that automatically maintains the flow of the refrigerant inside the evaporator.

What is Thermostatic Expansion Valve or TEV?

Thermostatic expansion valve or TEV is one of the most commonly used throttling devices in the refrigerator and air conditioning systems. The thermostatic expansion valve is the automatic valve that maintains proper flow of the refrigerant in the evaporator as per the load inside the evaporator. If the load inside the evaporator is higher it allows the increase in flow of the refrigerant and when the load reduces it allows the reduction in the flow of the refrigerant. This leads to highly efficient working of the compressor and the whole refrigeration and the air conditioning plant.

Hydraulic governors

Written by Bobby Friday, 16 October 2009 22:59

A simple mechanical governor must overcome friction in the linkages and exert a controlling force. These forces act in different directions depending upon whether the load is increasing or decreasing.The effect of this friction is to create a deadband

Properties of Distillate and Residual Fuels

Written by Bobby Monday, 27 July 2009 02:41

Density
This is the mass per unit volume and is generally given as kg/m³ at 15^OC and is specifcially given as that found in a vacuum. The density reduces with increasing temperature and alos reduces in air although the latter by only about 0.1%.