DESAIN ULANG ALAT PENUKAR KALOR TIPE SHELL AND TUBE DENGAN MATERIAL TUBE CARBON STELL DAN STAINLESS STELL 304

George Stell (1933-2014).

Reduction of Aeromonas hidrophyla biofilm on stainless stell surface by essential oils

This study demonstrates the possibility of using sanitizing detergents based on natural products for the elimination and/or reduction of Aeromonas hydrophila biofilm formed on stainless steel surfaces. The goal of this work was to determine the reduction effect of sanitizing detergents containing essential oils of Thymus vulgaris (thyme) and Cymbopogon citratus (lemongrass) on biofilm formed by...

Investigating Tubes Material Selection on Thermal Stress in Shell Side Inlet Zone of a Vertical Shell and Tube Heat Exchanger

In this study, the effect of the tube material on the thermal stress generated in a vertical shell and tube heat exchanger is investigated. Shell and tube heat exchangers are the most common heat exchangers used in industries. One of the most common failures in these exchangers in the industry is the tube failure at the junction of the tube to tubesheet. When the shell side and the tube side fl...

The Cummings-Stell model of associative fluids: a general solution

In a series of publications the Cummings-Stell model (CSM), for a binary mixture of associative fluids with steric effects, has been solved analytically using the Percus-Yevick approximation (PYA). The solution consists in a square well potential of width w, whose center is placed into the hard sphere shell (r < σ): at L = σ/n (n = 1, . . . , 4). This paper presents a general solution, for any ...

Liquid-State Anomalies and the Stell-Hemmer Core-Softened Potential

We study the liquid anomalies arising from the Stell-Hemmer interaction, using molecular dynamics simulations and approximate 2D solutions. We observe in the liquid phase three types of anomalies: (i) An increase in specific volume upon cooling, (ii) an increase in isothermal compressibility upon cooling, and (iii) an increase in the diffusion coefficient with pressure. We relate the anomalies ...