No time for compromise

The current Coronavirus outbreak has led to increased pressure on the food industry. For example, a penchant for lockdown baking means that grocery sales of flour increased in the UK by 92 per cent. This causes smaller mills, such as one in Oxfordshire, to begin running at 24-hour operations for the first time in its 125-year history. When under pressure to upscale production, manufacturers cannot forget the importance of good practice, particularly in highly regulated industries. Here Clive Jones, managing director of thermal fluid specialist Global Heat Transfer, explores the importance of maintenance in these times.   Food, beverage and…

Deadly degrees of difference

Temperature plays a crucial role in everyday life. One small change could impact something simple such as a morning coffee or larger aspects such as seasons and personal health. In manufacturing, temperature can mean the difference between productivity and costly mistakes, particularly when working with thermal oil. Here, Clive Jones managing director of Global Heat Transfer, explains how temperature can impact the performance and life span of a heat transfer fluid.   In June 2019, Müller UK recalled two Cadbury desserts from supermarkets after discovering the possible presence of listeria monocytogenes. To kill off listeriosis in food, manufacturers must ensure…

Thermal fluids in the public sector

In early 2019, two outbreaks of scabies in correctional facilities hit the international news, one at the Women’s Huron Valley Correctional Facility, Michigan, the other at Polmont Young Offenders Institution near Falkirk, UK. Highly contagious diseases such as scabies can more easily spread in facilities where hundreds of people, often in vulnerable health conditions, share the same spaces, such as in hospitals and prisons. One way to help prevent the spread of infection is to wash laundry frequently and at high temperatures. Here Clive Jones, managing director of thermal fluid specialist Global Heat Transfer, discusses best practice for maintaining efficient…

High temperature heat transfer fluids degrade when used at high temperature for prolonged periods, so what can be done to slow this process?

Heat transfer fluids (HTFs) can be used at very high temperatures (around 400 degrees Celsius is the standard in concentrated solar power plants). With prolonged use these fluids will start to degrade and the by-products that form need to be actively managed to help maintain a safe operating environment and to simply extend the fluid’s operating life. Indeed, few companies understand that regularly servicing a HTF and HTF systems can help sustain their longevity.  Global Heat Transfer examines how the build-up of short-chain hydrocarbons, a by-product of HTF thermal degradation, can be managed. Ennis [1] described the process of thermal…

High temperature heat transfer fluids degrade when used at high temperature for prolonged periods, so what can be done to slow this process?

Heat transfer fluids (HTFs) can be used at very high temperatures (around 400 degrees Celsius is the standard in concentrated solar power plants). With prolonged use these fluids will start to degrade and the by-products that form need to be actively managed to help maintain a safe operating environment and to simply extend the fluid’s operating life. Indeed, few companies understand that regularly servicing a HTF and HTF systems can help sustain their longevity.  Global Heat Transfer examines how the build-up of short-chain hydrocarbons, a by-product of HTF thermal degradation, can be managed. Ennis [1] described the process of thermal…

Drawing Heat Transfer Samples and Personal Protective Equipment

The use of standardised test methods enables thermal decomposition products of a Heat Transfer Fluid (HTF) to be quantified accurately. For test results to be meaningful (ie predictive), however, it is important to gain a representative HTF sample, which is done whilst the HTF is hot and circulating in the heat transfer system. It is good practice to take representative HTF samples on a regular basis (as frequently as is feasibly possible) and to monitor the decomposition of a HTF over time to reduce the potential of finding false negative or false positive results (read more about this in a previous…

Drawing Heat Transfer Samples and Personal Protective Equipment

The use of standardised test methods enables thermal decomposition products of a Heat Transfer Fluid (HTF) to be quantified accurately. For test results to be meaningful (ie predictive), however, it is important to gain a representative HTF sample, which is done whilst the HTF is hot and circulating in the heat transfer system. It is good practice to take representative HTF samples on a regular basis (as frequently as is feasibly possible) and to monitor the decomposition of a HTF over time to reduce the potential of finding false negative or false positive results (read more about this in a previous…

Why It’s Important to Draw a Representative Heat Transfer Fluid Sample

Heat Transfer Fluid (HTF) analysis begins with collecting a representative sample of the HTF in order to get an accurate picture of overall condition and suitability for continued use and comply with Health and Safety Regulations, including DSEAR and ATEX. Prior to taking a sample, ensure there is safe access to all ports of the sample device and that the sampling area is safe. Ensure you have a clear standing area with unobstructed access to the sampling site. The height of the sampling port should be below chest height to avoid any potential risk of splashes to the upper-body; the…

Understanding Heat Transfer Fluid Degradation

Heat transfer fluid (HTF) systems use HTFs as a heat carrier that circulates through a closed system that starts with a heater and ends with an object being heated. The process of heat transfer refers to the transfer of heat from a higher temperature object to a relatively lower temperature object. This process is maintained until the object being heated reaches thermal stability, and is vital in the process of generating homogenous end products, from processed foods to thermoplastic polymer resin used to make fibres for clothing, and containers for liquids and foods.  As you might expect, there are many…

Three tips for heat transfer systems

The Oxford Electric Bell has been ringing constantly for over 175 years – so much so, that the apparatus has been dubbed the world’s most durable battery. But after all this time, it is still a scientific mystery how the bell has functioned for so long. For operators of thermal fluid systems, keeping operations running doesn’t have to be a mystery.   Here, Clive Jones, managing director of heat transfer fluid specialists, Global Heat Transfer, gives three considerations for manufacturers operating thermal fluid heat transfer systems to safeguard the system’s future for the long term.   In chemical processes that…