Procedure for entering an enclosed space on a ship A ship is a complex structure from inside with several small and enclosed spaces. Many of these enclosed spaces are used for installing some machinery or for storing machine parts or workshop equipment. A ship has a matrix of pipelines, which runs through each of its parts, including […]
Procedure for cleaning fuel oil tanks for ship Ships use heavy fuel oil which has a very high viscosity. When stored in fuel tanks, this oil tends to stick inside the tanks forming layers of semi-solid substance. Moreover, many impurities of the oil settle down and stick to the surface of the tanks. It is […]
Important points to consider while cleaning tanks on ships Tank cleaning is a common procedure performed on board ships. Those associated with the process are very well aware of the hazards involved and fatal accidents that have occurred in the past. In spite of all the necessary safety precautions and enclosed space entry procedures, accidents […]
A guide to marine gas oil and LSFO used on ships The mega marine engines of ships burn tonnes of fuel every day in order to propel massively loaded ships. These engines are known to use low-grade fuel oil to lower ship operating costs as cost of fuel represents as much as 30-50% of total operating costs […]
Marine boiler economizer To obtain an acceptable degree of efficiency and reduce fuel consumption as much as possible by introducing further heat recovery surface so that the gas temperature at the funnel may be as low as practicable, the gas temperature leaving a boiler cannot be reduced much below 30oC above the saturation temperature. In […]
Types of marine boilers auxiliaries There are many different types of marine boilers, however, they have all got one thing in common their auxiliary components, and their fixtures and fittings. These form an equally important function as the boiler just wouldn’t operate efficiently without any one of them. Combustion Air system 1. Forced Draught Fans […]
Preliminary heat exchanger design sizes Introduction – The Heat Exchanger Design Equation The basic heat exchanger design equation, Q = U A ?Tlm, was introduced and discussed in another article, “Fundamentals of Heat Exchanger Theory and Design.” When used as a design equation to calculate the required heat transfer surface area, the equation can be […]
Heat exchanger types and calculations on ship Types of Industrial Heat Exchangers There are many types of heat exchangers used in a wide variety of industrial applications including power plants, boilers for industrial steam, chemical plants, and many types of manufacturing facilities. Several different configurations are used to accomplish the basic function of transferring heat […]
Engineering Guide to Air Conditioners and HVAC Topics The articles in this guide are designed to help students and enthusiasts who are encountering these works for the first time in a high school, college, or work setting. Whether you’re looking for a detailed analysis of a technology, an explanation of a working methodology, or study […]
Modification of an Existing HVAC System to Improve Efficiency In the US, 40% of the total energy used is consumed by buildings, and HVAC consumes a substantial percentage of this energy. It is therefore in companies’ interest to decrease this energy use, and one way to do this is to improve the efficiency of the […]