The video clearly showcases the flowing circuits in inlet of both the thermoregulated fluid and the cooling water. Once the thermal transfer is achieved within the plate heat exchanger, the unit provides the fluid regulated at the temperature requested by the process. The video clearly shows the fluids’ circuit scheme, with lateral views from both sides of the thermoregulating unit.

Furthermore, at the dedicated Solutions page in the Tempco website is also available an interactive 3D model of the thermoregulating unit, which allows to freely rotate the machine at any desiderd angle view and zooming in high resolution details prospects, offering the possibility to extensively explore the construction and engineering of these thermoregulating units.

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L'articolo Tempco TREG HCE monofluid thermoregulation in 3D model proviene da Tempco Blog.

We invite you to discover the interactive 3D model available at the product page on our Tempco website that allows to explore the construction of the thermoregulating unit (a couple of screenshots are pictured below), zooming to see it in detail and also rotating the plant as you like to have a 360° vision of the solution, choosing both cooling cycle or heating cycle mode.

In the animated video of the thermoregulating unit below, the fluid employed is water which is regulated at the temperature required by the application, often reactors employed in pharmaceutical and chemical production, in all the different production steps involved.

Using the same kind of cooling fluid, by thermoregulating it within the circuit achieving the exact temperature level required every time by the different production steps, it is no more necessary to empty and washing the circuit every time as required when different thermoregulating fluids are employed to achieve the several temperature levels needed.

The SFC – Standard Custom Flexibility approach in Tempco finally allows to fully customize the thermoregulating units to meet specific requirements of clients, further increasing thermal efficiency, the reliability of the plant and achieving smart energy consumption.

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L'articolo Interactive 3D model of thermoregulating units TREG in mono fluid cooling proviene da Tempco Blog.

I remember when first attempts started on the market to employ inverters in order to adjust the speed of compressors on refrigerating groups. Inverters are largely employed to regulate speed on electric drives, adjusting the power absorption based on the season conditions. It’s clear indeed that during the summer season, when ambient temperature is higher, a refrigerating group needs the maximum power in order to achieve the refrigeration task required. While during the winter season it requires less amounts of power, due to a series of reasons such as the increased efficiency of the condensation system and the fact that water comes from the production process at lower temperatures.

The study to implement energy saving on refrigerating groups aimed then at adjusting the speed of fans on condensers using EC motors, with electronic control, through inverters. This allows the regulation of the speed of fans based on ambient temperature levels.

The same kind of adjustment was then possible on compressors. Let’s make an example to explain why: when sizing a refrigerating group employed to regulate the temperature of pharmaceutical reactors, the plant must be engineered to provide the maximum capacity required to achieve the cooling task. But there will be also a series of intermediate steps not requiring the maximum design refrigerating capacity, but maybe only at 50% or 30.

In the past it was used to employ multi-compressor plants, with step-compressors, using all of the compressors, or only 2 on 4, or one on 4 for example. The solution allowed to obtain a good energy saving, clearly using a step-approach. Which means, having a four-compressors plant, the possibility to have a 100% capacity, or at 75, 50, 25 or 0%.

A further improvement was to install a collecting tank in order to accumulate refrigerated water to satisfy peaks and hollows on the thermal work diagram. An optimal regulation, that can be furthermore improved.

The improvement consists in the employ of an inverter, which allows to adjust the speeed of the compressor in order to have the correct amount of power at the exact right moment when it’s needed. Which represents the very perfect condition. I remember that the first attempts to install inverters on compressors failed, because these were volumetric piston compressors that when powered by the inverter kept stuck.

The problem has been solved with the adoption of scroll-type compressors, that can be used with inverters. Taking a huge step forward in energy saving applied to refrigerating groups. There are also other possibilities to further enhance energy saving, such as using inverters also on pumps to regulate the pressure, but let’s discuss it in a next video.

L'articolo Energy saving with inverters in refrigerating groups proviene da Tempco Blog.

In order to make aluminium resistant to corrosion, the material thus undergoes a treatment in anodic oxidation baths, which generates a sort of chemical coating that makes it resistant to atmospheric agents corrosion. This is achieved using electro-chemical or electro-galvanic baths, where a direct current passes through. Thanks to an electrolytic process, a hard layer of anodic oxidation is deposited on the external surface of the aluminium.

There are different types of anodic oxidation processes, and the field of expertise in Tempco is to ensure the cooling of these baths. Indeed, the direct current that passes through them generates heating, and the temperature of the baths must be maintained at a temperature of approximately 20-25° C, depending on the kind of anodic oxidation process involved.

The application is simple, but there is a problem: usually, these baths don’t contain water, but a solution of sulphuric acid, in a low concentration of about 20%, depending on the type of anodic oxidation process. Cooling can then be achieved using chillers or main water with heat exchangers.

But heat exchangers have to be manufactured using special materials, in order to ensure resistance to corrosion by sulphuric acid. Therefore, for the cooling of anodic oxidation baths we supply traditional plate heat exchangers using materials such as titanium or high alloy stainless steel. We also employe immersion TCOIL dimple jacket exchangers, still being manufactured using high alloy stainless steel.

Cooling in anodic oxidation is also challenging on another prospect, which is the evaluation of the thermal duty of these exchangers. We will soon dedicate another video to this theme.

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L'articolo Special materials in anodic oxidation bath cooling proviene da Tempco Blog.

In the video, you can see a more in depth explanation of the project we deployed for the Marina di Loano seaport, in the Liguria Region. The direct immersion of dimple jacket exchangers in the seawater allowed to eliminate almost completely the pumping and suction systems of seawater that previously served traditional heat exchangers. The exchangers serve in turn a network of heat pumps, distributed all over the wide area of the seaport. The cut of electricity consumes have thus been really interesting.

TCOIL exchangers have been realized using a special material, super-duplex stainless steel, in order to ensure corrosion resistance against chlorides in the brackish water. After two years of operations by immersion, the exchangers naturally showed a certain level of biological and organic growth on the surfaces. That’s the reason why a special support structure has been designed, equipped with lifting hooks allowing to pull out the exchangers from the seaport to proceed with cleaning and washing operations using a pressure washer. This operation is much more easy with this kind of exchangers, compared to traditional heat exchangers, and doesn’t require any specific expertise thanks to the high mechanical resistance of TCOIL exchangers.

Furthermore, the video also tells about another similar installation we did in Tempco, for the Ispra Research center of the European Commission. Here, TCOIL exchangers have been immersed inside the water of an artificial drain, using its water to feed heat pumps. Fresh water entails here less material problems, which was here AISI 316. Anyway, the customer wanted an electropolished stainless steel, a special finishing that reduces the deposition and growth of algae and other organisms above the exchangers surfaces, reducing the maintenance needs.

At last, there is also a quick mention of another very interesting application of TCOIL immersion cooling exchangers, having a huge potential. That is the liquid cooling of data centers, of servers and electronic equipments. In this sector is indeed possible as well to take advantage of these exchangers by direct immersion in cold water, providing the cooling of IT devices.

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L'articolo Smart efficiency and energy saving immersion-driven proviene da Tempco Blog.

First of all, pumps can be divided in two main families, centrifugal pumps, a dynamic kind of pumps, and volumetric pumps.

As the name itself says, volumetric pumps are employed to move huge amounts, big volumes of fluids. Centrifugal pumps use instead a different approach, exploiting the centrifugal force to move fluids.

Once again, centrifugal pumps can be divided in two branches, classic centrifugal pumps and peripheral centrifugal pumps. Both of them employ the centrifugal force to move fluids, but peripheral centrifugal pumps are equipped with open type impellers that allow to obtain quite high pressure values with contained power capacity motors.

These are pumps that can be found in applications that don’t need very high flow rates. When the flow rates required increase, it is then mandatory to employ classic centrifugal pumps. But for low flow rates, a peripheral centrifugal pump can be an excellent solution to achieve high pressure values, by using low power capacity motors and therefore quite economical.

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L'articolo Centrifugal pumps, types and advantages proviene da Tempco Blog.

We have also developed a series of thermoregulating units with electric heating equipped with continuous variation of the power capacity, aimed to provide customer the effective power required in a just-in-time basis, exactly when it’s needed.

Free cooling systems are another application we develop since many years to achieve energy saving in industrial applications. A new project is instead the iTempco platform. The project was born in January 2019, but we were thinking about something similar for a long time yet: iTempco is a condition monitoring platform of our units, which allows to remotely check via cloud both the functioning and the performances of our thermal machines, aimed to implement predictive maintenance services. In addition, it allows us to understand how our equipments work, and how they are sized referred to real customer’s needs, providing us a feedback loop to optimize the engineering of our machines, in a data-driven mode.

Finally, this Tempcoblog you are reading is something that goes on since 15 years, aimed to open a contact window with our customers where we can give updates on our latest solutions for heat exchange and energy recovery problems. I can take this opportunity to say a big Thank you to everyone who is still following us with such continuity after all these years, for your attention and contribution! And also for the nice feedback we’re having for the Video series that during 2019 we started uploading on our Tempco YouTube channel.

Looking at the future of Tempco, we have very clear ideas: we want to keep growing enormously, in order to be able to give customers better and better support in their energy saving and temperature regulation applications. The Tempco team is really a close-knit and skilled group, and it allow us to react with very short times to market demands. In Tempco we love challenging projects, because this is not really a job for us, it is truly a passion!

L'articolo Energy saving and IoT, chatting with Tempco part. 2 proviene da Tempco Blog.

Anyway, the most common way is to consider the volume of the reactor to be thermoregulated, and the physical properties of the kind of product processed, in particular its specific weight and specific heat capacity. Following, the heating and cooling curves required by the application must be known, that is the starting and final temperatures to be reached, and the time frame required to complete the heating and cooling cycles of the products.

At this point the calculation is obtained with a simple formula, multiplying the volume of the product x specific weight x specific heat capacity, multiplied x the temperature change, and all divided by the time unit. The resulting are the kcal, or kw/h required to heat or cool the product. The formula must then be applied to all the up and down temperature ramps, to find out the most challenging one that will serve as base for the correct sizing of the thermoregulating unit.

Another case is represented by the distillation of products. In this case the reference heat or cooling load to determine the size of the unit is obtained, in addition to the temperature ramps calculation, by another one related to the distillation process, multiplying the amount of kgs/hour of distilled product x the latent heat of vaporization.

L'articolo Heating and cooling load calculation in pharma thermoregulation proviene da Tempco Blog.

Further cases are avoided by the intelligent design of the gaskets in a heat exchanger. Fluids cannot mix indeed due to the break of a gasket, because gaskets in plate heat exchangers always offer a double protection.

Gaskets of a plate heat exchanger offer protection all along the perimeter of a plate and also in the nozzle area, where the liquid flows from a plate to another. Here, there is a double gasket, and in addition it offers a sort of drain toward the outside, so that in case one part of the gasket breaks there will be a leakage of liquid on the external side of the heat exchanger, alerting that something’s wrong is happening. Is then sufficient to stop the exchanger from operating and extract the two plates where the drop was detected, then close again the exchanger and re-starting the plant.

L'articolo Fluid’s mixing in plate heat exchangers proviene da Tempco Blog.

The request regards usually the possibility of reversing the direction of the flows, or to swap connections between the primary and secondary circuit. Plate heat exchangers generally have symmetrical hydraulic circuits, so that’s why it is usually possible to reverse the directions of the flows, that typically travel in countercurrent within the exchanger, and also to invert the connections between primary and secondary circuit. In both cases, the thermal transfer efficiency of the heat exchanger is not affected in a sensible way.

Anyway, is always better to ask in advance, because there are some applications with circuits that are not symmetrical, or with draining requirements. This is the case of steam, which must always enters the heat exchanger from above, so that condensation can go to the bottom in order to be completely drained from the exchanger. When using steam, it is then possible to swap primary and secondary circuit, but the direction of the flows cannot be reversed.

L'articolo Piping connections in plate heat exchangers proviene da Tempco Blog.