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Performance study of oil-injection hermetic CO2 scroll compressor for automotive air conditioning system. [PDF]
PLoS OneHao J, Wang Z, Bu G, Zhang B, Shu P.
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Assessment of the Superheater Ash Fouling Using a Numerical Model of the Superheater
Heat Transfer Engineering, 2018ABSTRACTSuperheaters are high-temperature cross-flow heat exchangers. Steam flows inside the tubes, and the flue gas outside in a direction perpendicular to the axes of the tubes.
Marcin Trojan +4 more
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Journal of Applied Physics, 1958
A new method of observing the limit of superheat was devised, in which small drops of a sample liquid are heated as they rise up in the non-soluble heating liquid with a suitable temperature gradient upward. Using the method, the limit of superheat was determined, mainly for some saturated hydrocarbons and polymethylenes.
Hiromu Wakeshima, Kazuo Takata
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A new method of observing the limit of superheat was devised, in which small drops of a sample liquid are heated as they rise up in the non-soluble heating liquid with a suitable temperature gradient upward. Using the method, the limit of superheat was determined, mainly for some saturated hydrocarbons and polymethylenes.
Hiromu Wakeshima, Kazuo Takata
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2019
Abstract Some examples of equipment failures involving high temperature operation are presented. They include some steam generator superheater components and a pump shaft that should not have been at high temperature. Metallographic analysis is used to determine the causes of failure in each case.
H.C. Furtado, Iain Le May
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Abstract Some examples of equipment failures involving high temperature operation are presented. They include some steam generator superheater components and a pump shaft that should not have been at high temperature. Metallographic analysis is used to determine the causes of failure in each case.
H.C. Furtado, Iain Le May
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A control architecture solution to superheat nonlinearity
Proceedings of the 2010 American Control Conference, 2010Evaporator superheat control is an important aspect of the operation of refrigeration and air conditioning systems; since the majority of cooling in these systems occurs through evaporation of two-phase refrigerant, the energy efficiency is improved by reducing the amount of superheat present.
Matthew S. Elliott +2 more
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Failure analysis of superheater tube
Engineering Failure Analysis, 2015Abstract The failure analysis of a ruptured superheater tube after 20 years service in the oil-fueled boiler, as the typical problems in power plants, was investigated. A thin-lipped rupture at failed region was observed in superheater tube. By measuring the tube’s wall thicknesses far from failed region, non-uniformity was seen.
A. Movahedi-Rad +2 more
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Radiant-Superheater Developments
Journal of Fluids Engineering, 1932Abstract Sustained high steam temperatures at all operating ratings, not peak readings at one narrow load range, are being sought in the industry’s quest for higher operating efficiencies. Uniform average temperatures, not maximum values, determine commercial economy and even safety of higher steam temperatures.
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Superheat Control: A Hybrid Approach
HVAC&R Research, 2009This paper examines the perennial problem of evaporator superheat control. While standard mechanical devices can operate effectively under design conditions, many behave poorly as conditions vary or under transient operation, resulting in degraded system performance, such as thermostatic expansion valve (TEV) hunting.
Matthew Elliott +3 more
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On the limit of superheat of cryogenic liquids
Cryogenics, 1983Abstract In an effort to test the empirical law governing the scaled superheat-limit,1 we measured superheated neon and hydrogen with special emphasis on the critical superheat. Experimental results were compared with a Doring-Zeldovich-like nucleation theory and satisfactory agreement was found.
K. Nishigaki, Y. Saji
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