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Heat Transfer

Sand-based thermal-energy storage

Using concentrated solar thermal (CST) energy to supply industrial-heating requirements is a promising way to reduce the use of fossil fuels. This is the aim of Magaldi Green Energy (Rome, Italy; www.magaldigreenenergy.com), which developed its Solar Thermo Electric Magaldi (STEM)…

Steam Reboilers: Condensate Vessel Balance to Reboiler is Important

Properly locating a simple 1–2-in. balance line can make all the difference in successful reboiler operation Steam reboilers are crucial to production in petroleum refineries and petrochemical plants, representing huge capital investment in distillation columns. Regardless of the investment made…
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3D-printed reactor core improves efficiency of solar-fuel production

In recent years, engineers at ETH Zurich have developed technology to produce liquid fuels from sunlight and air. At the heart of the production process is a solar reactor that is exposed to concentrated sunlight delivered by a parabolic mirror…
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First-phase pilot tests completed to demonstrate RotoDynamic technology

Coolbrook Oy (Helsinki, Finland; www.coolbrook.com) has successfully completed the first phase of large-scale pilot testing (photo) for its RotoDynamic Technology at the Brightlands Chemelot Campus in Geleen, the Netherlands. During 2023, Coolbrook has been running a test program to demonstrate…
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The first H2-fired low-NOx burner for traveling-grate pelletizing plants

Last month, Metso Corp. (Espoo, Finland; www.mogroup.com) introduced a hydrogen-variant of its Ferroflame LowNOx burners as part of its NextGen Pelletizing plant product range. It is a first-of-its-kind burner to run on H2 and to operate on the LowNOx combustion…
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Safely Operating a Heat-Transfer-Fluid System

Being aware of and understanding potential hazards are crucial for operating a heat-transfer-fluid system safely A significant number of industrial processes require heating or cooling with precise temperature control. Maintaining this temperature control can be achieved through several industrial practices,…
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This indirectly heated rotary kiln is powered by electricity

Metso Corp. (Helsinki, Finland; www.metso.com) has optimized its existing rotary kiln technology and launched RotarEkiln, an electrically powered, indirectly heated rotary kiln. The electric heating system of the RotarEkiln provides a sustainable alternative to conventional fuel-powered indirect rotary kilns. The…
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A new approach to refrigeration with no global-warming potential

Traditional vapor-compression refrigeration relies on hydrofluorocarbons (HFCs) as refrigerant fluids — a class of compounds with global-warming potentials (GWP) thousands of times higher than that of CO2. A new approach from scientists at Lawrence Berkeley National Laboratory (LBL; Berkeley, Calif.;…

Facts At Your Fingertips: In-Service Heat-Transfer-Fluid Testing

Regular heat-transfer-fluid monitoring can prevent fluid problems that lead to equipment failure, costly downtime and repairs. Parameters to watch include viscosity, acid neutralization number, moisture, solid or residue content, thermal degradation and flash point. This one-page reference provides information on…
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Standard Operating Procedures are Critical for Boiler and Steam Operations

An overview on the importance of standard operation procedures (SOPs) and how to write them Today, it is necessary to have standard operating procedures (SOPs) for steam and condensate systems, boilers, deaerators and even steam process units (Figure 1). An…
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