Engr. Shafiul Bari
Marine Engineering Expert
Shafiul Bari is a seasoned Marine Engineer with extensive experience in ship design, maintenance, and marine propulsion systems. With a deep technical knowledge of ship engineering and a passion for advancing maritime technology, Shafiul shares practical insights and expert advice to help marine professionals and enthusiasts better understand the complexities of ship systems. Through his website, he aims to bridge the gap between technical theory and real-world application, fostering a community of informed and skilled maritime engineers. When not immersed in ship engines and technical manuals, Shafiul enjoys exploring the latest innovations in marine technology and mentoring aspiring marine engineers.
Articles by Engr. Shafiul Bari
AC Plant:
.ac plant .air conditioning Brief explanation: Temp – com outlet- 70-90, condenser outlet- 38-45, TXV out- 0-10, evaporator out-7-15,Superheat- evaporator outlet 5-6 and compressor inlet around 10 degreeFigure 4. T-S diagram for basic vapor compression cycle. The cycle processes can … Continue reading →
Refrigeration system:
Article link: Sketch: Direct expansion system: .refrigeration system → evaporator coil situated inside the space to be refrigerated. → no duct and piping required Checks Before starting the refrigeration plant, During start During operation: During auto Stopping: To shut down for longer duration: AIR CONDITIONING … Continue reading →
Impingement Attack:
.impingement Seawater flowing into the heat exchanger tubes at higher velocities tends to remove the thin protective film adhering to the base metal of the tube wall. This protective film is peeled and allow further corrosion of the tube wall. … Continue reading →
Plate type cooler:
.plate type cooler Description: Methods of expansion There are three methods of expansion 1. Shell and header fixed, tube stack expands: 2. Tube stack and header fixed, shell expands: 3. Shell, tube stack, header fixed, tube expands:
Frequent tube failure:
.ftf .frequent tube failure .ctf .hetf .htf Link: https://www.fluiddynamics.com.au/six-causes-of-heat-exchanger-tube-failure/ 1. Tube Corrosion The biggest threat to shell and tube heat exchangers that use carbon steel tubes is oxidation (corrosion) of the heat transfer surface of its tubes. The reaction between … Continue reading →
Ship side valves
2.1 General Shell and tube heat exchanger Tube type cooler .cooler .heat exchanger .tube cooler Cooler article: https://marineengineeringonline.com/tag/l-o-cooler-leakage/ How many tube can be plugged: 10% tube can be plugged
Anodes (Anti corrosion system):
.anode types .anodes .zinc anode .aluminium anode Commonly used anodes are Zinc, Aluminium, Soft iron, Magnesium Advantages of aluminium anodes Weight: Aluminium is significantly lighter than zinc, by a factor of 2.5. Al anodes are lighter to ship and to … Continue reading →
The Marine Growth Prevention System (MGPS)
.mgps The Marine Growth Prevention System (MGPS) has been developed for ships with the sole purpose of tackling marine organism growth, preventing it from depositing on the ship’s interior piping systems, which are continuously supplied with sea water. The anode … Continue reading →
Hull protection
.hull protection .ships hull protection .ship hull protection Sea Water System Protection against Corrosion: Sea water systems such as ships hull protection may implement several methods for prevention against corrosion. Such systems are: Sacrificial Anodic Protection Impressed Current Catholic Protection … Continue reading →
Prevention of Corrosion of Sea Water System:
.corrosion prevention .seawater protection .sea water protection .sea water system .prevention of corrosion Sea water systems can be protected using some prevention measures, such as- 1. Material selection should be good. -steel -copper alloy – aluminium alloy … Continue reading →