Abstract— PT. PLTU Indonesia di Pelabuhan Ratu Sukabumi memiliki boiler yang terdiri dari economizer, steam drum, downcomer, coal worker, wall stirrer, superheater, heater dan valve terhubung ke sistem. Salah satu sistem akan diservis adalah drum level. Level uap tidak boleh mencapai level terendah (LLL). Pada tanggal 15 Mei 2019 terjadi kebocoran water tepatnya blok 1 pipa dinding air belakang...

The author has presented an excellent paper describing considerations that went into the development and imple­ mentation of the subject facility. The use of some pho­ tographs in the paper was particularly helpful. The photo on p. 240 shows open structural members around the bottom of the key air pollution control elements. For very little additional capital cost, these areas can be en­ closed...

In this paper a comprehensive model of a fossil fueled power plant (FFPP) is developed in order to evaluate the performance of a newly designed turbine follower controller. Considering the drawbacks of previous works, an overall model is developed to minimize the error between each subsystem model output and the experimental data obtained at the actual power plant. The developed model is organi...

This paper deals with open-shaft twin-screw refrigeration compressors in the 10 175 m3/h (10 100 CFM) range. Applications for such compressors are, for example,external combustion engine heat-pumps and transport refrigeration. The twin-screw compressor concept is discussed from following view-points; operational mode and rotor housing design drive arrangement bearings lubricants cooling volume ...

ASHRAE Technical Committee (TC) 9.9 Mission Critical Facilities, Technology Spaces, and Electronic Equipment published a white paper in 2009 entitled Gaseous and Particulate Contamination Guidelines for Data Centers. That paper has raised concerns with data center designers and operators by stating that there is a recent increase in IT equipment failures associated with airborne pollutants. Whi...

The human operators of complex systems, such as computer-integrated manufacturing systems, power plants, and aircraft flight decks, are highly educated and trained. They can monitor and manage their particular systems under normal conditions and during system malfunctions. These operators typically must deal with an enormous quantity of data conveying system health that is presented to them on ...

This paper describes analytical and experimental efforts leading to a complete thermodynamic simulation of refrigerant screw compressors with emphasis on methods for inspection of experimental compressors and assembly analysis to determine actual clearances for specific test compressor. This work led to a better understanding of leakage and improved analysis in the thermodynamic model. The need...