Regarding the use of heat transfer oil as a cooling medium

This post was last edited by Engineering-Industrial Rebel on September 5, 2016, at 16:08. It’s totally possible; I have successful experience in this regard, and I also hold a patent related to energy conservation. You can contact me if needed. Make your heat transfer oil system more energy-efficient and advanced – a blessing for users of such systems. Does your heat transfer oil heating equipment need to be able to switch between hot and cold modes? In systems that use heat transfer oil for heating or cooling, an important factor affecting thermal efficiency and economic costs is the switching between hot and cold oil during the process of temperature adjustment. When hot oil (or cold oil) is switched to cold oil (or hot oil), the hot oil (or cold oil) remaining in the jacket (or coils, semi-coils) of the reaction vessel is transferred to the cold oil (or hot oil) system, where it must be cooled (or heated) to become cold oil (or hot oil). Each switch causes significant heat loss and cold loss. It is estimated that, for a reactor jacket with a volume of 5 m3, the heat loss and cold loss associated with each switch-over are each around 60,000 kcal (equivalent to 70 kWh), which is undoubtedly a significant amount of loss. Of course, the specific amount depends on the volume of heat transfer oil in the jacket. How can we avoid this energy loss caused by the need to cool hot oil and then reheat cold oil? Creative ideas, excellent designs, and **patents enable you to solve problems easily, significantly reduce energy losses, and effectively cut production costs. Whether heat transfer oil is used for cooling or not, whether it’s the renovation of an existing system or the design of a new one, everything is so simple and easy. Low investment, high returns – why not give it a try? Guided by theory and based on practice, this technology has been applied in large-scale projects. Welcome to visit! System design plans, control programs, and operating procedures can be provided. For contact information, please use the in-site message

This post was last edited by Engineering-Rebel on 2016-9-5 at 16:08. It’s totally possible; I have successful examples of it running here. Welcome to visit! I also hold an energy-saving patent specifically for heating and cooling with heat transfer oil.

What is the temperature in °C of the heat transfer oil used as a cooling medium? ? Large temperature differences cause significant damage to oil products. The maximum temperature difference of the heat transfer oil, which serves as the heating medium, is kept within 50 during the heating phase.

The cold oil used for cooling must always be kept at room temperature, which is especially important for expansion tanks containing heat transfer oil under normal pressure. The reason for this is that heat transfer oil oxidizes and deteriorates when in contact with air at high temperatures, which significantly shortens its service life.

This post was last edited by *amingteda on 2016-9-8 09:55. Such a large heat transfer temperature difference? A large temperature difference is not conducive to controlling the reaction process. It is recommended to choose a temperature difference of within 20°C for the design.

No problem. We used Great Wall’s thermal oil in the past; during the reaction process, hot oil was used for heating, and cold oil was used for cooling – nothing problematic with that. The temperature is similar to yours: the oil temperature reaches 220 degrees during heating (with a maximum of around 320 degrees), and it drops to over 90 degrees at the outlet during cooling. These two types of oil are part of separate systems, but hot oil (from the boiler system) can be used to replenish the cold oil. Cold oil can also be introduced into the boiler system during maintenance, with circulating water being used to cool it.

What the person above said is correct. As a reactor that uses intermittent heating and cooling, there is inevitably a process of temperature increase and decrease; the temperature usually rises from room temperature to over 200 degrees (if a lower temperature isn’t required, then there’s no need to use heat transfer oil). The process is reversed during cooling. A temperature difference of around 200 degrees does not pose too many problems for the equipment, but certain requirements exist for equipment processing (such as welding). For heat transfer oil, as long as the interface in contact with air is cold oil, there will be no problem. Of course, in the design, we can adopt a scheme that uses thermal oil for both heating and cooling. If the equipment permits it, for example, if it has both an external coil (or external jacket) and an internal coil, we can use heat transfer oil to heat one side (such as the external jacket) and cooling water to cool the other side (such as the internal coil). It can simplify the cooling system and reduce operating costs. If the patented energy-efficient heat transfer oil heating system of the owner is used, the operating costs can be reduced even further.

There’s no need to copy this small technology from abroad. In essence, it is about using an inert gas to protect the liquid level in the expansion tank. If the oil temperature in the expansion tank is at room temperature, there’s no need for such complicated considerations regarding protection. The expansion tank is connected to the system via an expansion tube; both internal diffusion and internal circulation are very limited, so the oil temperature inside the tank does not become too high.

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