In this specific case, the immersion plate heat exchanger arrays have been installed in the equalization tank, which receives the wastewater generated by the parboiling process—consisting primarily of water used to soak the paddy rice. The purpose of the custom immersion plate heat exchanger is to recover heat from the wastewater, yielding a dual benefit: first, the recovered heat preheats well water circulating within the plates to the highest possible temperature, resulting in significant energy savings by reducing steam consumption. Second, the heat transfer process cools the wastewater before it is sent to the purification plant, providing a substantial advantage for the biological treatment processes taking place there.

The system was implemented as custom and in retrofit, utilizing existing structures within the client’s equalization tank. Specifically, the existing agitators were leveraged to maintain a fluid velocity of ≥0.1 m/s, generating turbulence that enhances heat transfer efficiency. Furthermore, the immersion heat exchanger arrays were installed by anchoring them to decommissioned aeration pipes (2.0 x 2.6 m).

Overall, the system will enable significant energy savings for the client, recovering approximately 174 kW of heat (150,000 kcal/h) and saving 1,500–1,700 tonnes of steam per year. Material selection for the heat exchanger plates was also critical; AISI 316L stainless steel was chosen to ensure corrosion resistance (handling wastewater with a pH of 3.7–3.9 with no critical chloride levels). Fouling caused by starches in the wastewater was accounted for using a conservative fouling factor (4E-4 m²K/W). Finally, given the intermittent nature of the wastewater flow—process wastewater is discharged every two hours, though a minimum volume is always maintained in the tank—performance was calculated at 70% of the theoretical maximum to determine the system’s ROI.

L'articolo Wastewater heat recovery with custom immersion plate heat exchangers proviene da Tempco Blog.

We our therefore quite proud to announce that this path today leads to the birth of Tempco.green, a new space expressly dedicated to thermal energy management solutions with a Green footprint, embracing new technologies to accompany companies within the process industry on a common path towards a future sustainable production. Solid Sustainability is the claim of this new era in Tempco, and the new energy that fuels the solutions that we want to study together with customers to bring sustainability into production processes in all industrial sectors.

A new energy, green solutions and renewables, energy saving and cutting-edge technologies, from the innovative PCHE exchangers for applications in the hydrogen industry and CO2 refrigeration, to the TCOIL immersion exchangers in applications that exploit heat pumps and geothermal energy; from fuel cells to new solutions for green mobility in the automotive and marine sectors. Up to digitalization for an increasingly fine and more intelligent monitoring and optimization of energy consumption in industrial processes.

We invite you to enter and discover the Tempco.green world, to create together the New era of sustainability in the process industry.

L'articolo Tempco Green, a new thermal energy for a solid sustainability proviene da Tempco Blog.

Among the different types of heat exchangers included in Tempco portfolio of solutions, particularly suitable for new applications in the hydrogen industry for Green Energy are the FULL STAINLESS STEEL and PCHE plate exchangers, printed circuit exchangers completely made in stainless steel suitable for hydrogen generation and fuel systems using PEM electrolysis or low conductivity deionized water.

Regardless of the type of electrolysis technology, Tempco can provide high-value thermal solutions employing brazed plate heat exchangers for electrolysis equipment, electrolytes, working fluid cooling and process heat recovery. Tempco thermal systems can be used in heating and cooling cycles for the production and use of hydrogen.

An important and interesting application case study recently developed regadrs the collaboration with Baglietto for the creation of the Bzero yacht, which opens the doors to zero-emission boating.

From water to energy, Tempco’s contribution to achieve this goal consists in the provision of on-board power electronics cooling systems. Thanks to an in-depth study of the case, we’ve been able to guarantee an efficient, compact and totally customized solution for the customer’s needs. More in detail, the solution designed for Baglietto includes three different thermal energy management systems:

• Electric container
  Energy dissipation in sea water with TCOIL immersed exchanger. Electric preheating
• Hydrogen container
  Cooling and temperature regulation of the FUEL CELL
• Container storage
  Hydrogen storage in metal hydrides

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L'articolo Hydrogen and thermal management for the Green Energy Industry proviene da Tempco Blog.

Future developments of thermal energy management solutions that are already impacting the present, in fact, aimed at introducing and boosting energy efficiency, sustainability and renewables in industrial applications. Also leveraging the opportunities offered by the digitalization of production processes related to the second level energy and of Industry 4.0.

This small e-book is indeed focused on the most recent and innovative technologies that are spreading within several industrial applications, speaking about heat exchangers and special plate heat exchangers for high temperatures and high pressures, employed for CO2 refrigeration in the HVAC sector. But also focusing on hydrogen applications in fuel cell technologies, heat pumps using geothermal energy and immersion TCOIL exchangers and, finally, the liquid cooling in Data Centers.

And so, thanks for any commitment in being sustainable, and Enjoy the reading!

https://www.tempco.it/download/e-book/e-book_Tempco_2022.pdf

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L'articolo Present and future of thermal energy in the second e-book Tempco proviene da Tempco Blog.

These heat exchangers are made of two metal sheets welded by spot welding (from which also comes the name Dimple jacket exchangers), and inflated using controlled pressure in order to create an internal chamber for the passage of the fluid that has to be cooled of heated, therefore absorbing of dissipating energy.

The TCOIL exchangers are the solution we use in all of the energy recovery applications, immersed in a tank or basin to absorb or dissipate thermal energy. We spoke recently about geothermal energy: in fact, these are the exchangers we employ for tank immersion, or also in natural basins such as lakes or even for direct immersion in sea water, as heat exchangers directly immersed in a cooler or warmer fluid.

In fact, the TCOIL exchanger shown on the video is an electropolished one, a kind of finishing treatment very much employed in the pharma sector, as well as in the chemical industry and wherever an extremely polished surface is needed in order to reduce the adhesion of scaling or, in the case of immersion in sea water, of biological organisms such as algae or mussels.

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Due to the relevance of the subject, we’ve decided to dedicate the entire month of February to the theme of Renewable energy. Over the next weeks we will go in depth with some applications of heat exchangers employed in solutions that deploy the potential of renewable sources, such as the geothermal energy with TCOIL dimple jacket exchangers and heat pumps or heat exchangers in innovative systems for energy recovery from waves. Up to our special C Series brazed plate exchangers for high pressure and temperatures levels especially intended for applications in innovative CO2 refrigeration systems and the emerging hydrogen industry with fuel cells for sustainable mobility.

In addition, we are enriching our References section in the Tempco website as well as the contents available in the Resources area, with the case studies and Manuals dedicated to technologies especially deployed for renewables applications.

Let’s then have great February, fully powered by Renewables!

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This new application of TCOIL immersion exchangers in industrial laundries is the first of its kind that we supply, and this is in fact a very brilliant and innovative solution, giving the customer a huge advantage in terms of energy saving. The customer has indeed water available at the temperature of 45-50° C, that is conveyed into the exchanger, with feeding water at 12° C that can therefore be heated at 35-40° C. The gain is about 20-25° C, and the water heated thanks to the recovered thermal energy is further heated in a boiler at 45° C ready for a new working cycle. A power saving of about 2/3 of the required power is thus obtained, so that for example the customer has a consumption of only 300 kW instead of 1.000 kW.

This is a very smart application, with heat recovery and a strong energy saving, that becomes even more interesting these days due to the huge increase in gas and energy costs. The increase of energy prices is indeed reducing the payback of a similar solution, drastically shortening the return of investment for the customers, because if once it would have been calculated in 10 years, now it potentially decreases to only 3 years. With then a ROI very much more accessible, even because this kind of solution, with stainless steel construction, offers a very much longer working life.

Once again, another example of the change of paradigm similar to the switch from gas to electrical heating, that we were speaking about in our video on the electrification of heating in thermoregulating units.

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L'articolo Energy recovery with immersion exchangers in industrial laundries proviene da Tempco Blog.

Even more interesting on the perspective of Tempco is the growing focus that investors, debt providers and developers have on energy security and ESG issues related to data center infrastructures. The global growth of data centers is clearly driven by the increasing demand for cloud services, and by the rise of IoT and artificial intelligence applications, with also the incoming rollout of 5G connectivity and the dawn of Metaverse. At the same time, the regulatory scrutiny and intervention in ESG have been increasing, with initiatives such as the Climate Neutral Data Centre Pact and metrics like PUE (Power usage effectiveness) more and more weighing on requirements for data centers around the world.

In this context, almost all respondents (94%) said that scrutiny and diligence surrounding ESG issues increased when making data center investment and/or development decisions in the past 24 months, and 99% of them anticipate a further increase in the next 24 months. More than a third (35%) of developers/operators said that they divested at least one data center in the past two years due to concerns related to ESG. The survey also shows that net zero carbon emissions are firmly on the agenda for a majority of respondents, as 68% of equity investors and 60% each of both debt providers and developers/operators said that the data center in which they had most recently invested either has a target to achieve net zero emissions by 2030 or it had already achieved this. Finally, energy and ESG factors are top drivers when it comes to generating a premium for data center investments: 70% of developers/operators and 75% of both debt providers and equity investors said they would be glad to pay a premium to invest in or finance a site with very good to excellent ESG and sustainability credentials.

As in topics we have already treated in the past, sustainability and energy saving in data center notably refers to the switch from air cooling systems of IT equipments and electronics to liquid cooling solutions, taking all of the advantages provided by immersion cooling in data centers. This represents in fact a shift gears for data centers, towards a more sustainable and green future for IT computing infrastructurea with a lower environmental impact. There are indeed several advantages offered by liquid cooling of data centers equipment, starting with the possibility to employ cooling fluids at higher temperatures thanks to the higher heat dissipation rate of liquid compared to air. Great energy savings are then also due to the elimination of fans and compressors in chillers, and furthermore allowing the implementation of free cooling systems.

L'articolo Data center, investments double globally with stronger focus on ESG issues proviene da Tempco Blog.

To achieve the cooling of water serving heat pumps, employed for the climatic regulation of Villa Savoja, enchanted real estate on the Como Lake designed in 1857 by the engineer Giovanni Savoja, we have provided electropolished TCOIL heat exchangers intended for direct immersion in the waters of the lake, within an overall renovation project that maintained the original architecture but fostering new modern concepts of sustainability and environmental footprint. The application leverages the natural thermal energy of the lake water, implementing energy saving in the cooling of water serving the heat pumps at the Villa real estate.

In Tempco there are several similar applications and references deployed in this interesting field, that combines the high flexibility of dimple jacket heat exchangers with the requirements of emissions reduction and intelligent consumption of energy and resources. A kind of application that has been provided as well in a sea environment, with special executions and a proper selection of constructive materials to stand the presence of chloride in the water of the Loano seaport.

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L'articolo Energy saving, heat pumps and immersion heat exchangers on the Como Lake proviene da Tempco Blog.

Immersion liquid cooling, a topic we have already treated several times in the past with the use of TCOIL dimple jacket exchangers, first of all increases the sustainability in data center management, improving energy efficiency of the cooling system. Indeed, using a liquid as cooling media instead of air allows a more close contact between the particles of the fluid and the object to be cooled, increasing the thermal transfer coefficient. It is therefore possible to employ cooling fluids at cooler temperatures, also leveraging on free cooling systems and obtaining an important energy saving cutting costs related to air conditioning and chillers.

In addition, the tested liquid cooling solution also led to a reduction of overall utility costs in high performance computing tasks required by software EDA, where the licensing costs often depends on the number of cores and clock speed required (clock speed indicates the number of on-off cycles (transitioning from 1 to 0) of a transistor in a second, measured in GHz). Higher clock speeds also mean higher rates of TDP (thermal design point), which is the maximum amount of heat generated by a chip that has to dissipated to ensure correct functioning of the component.

The overall software licensing cost can therefore be lowered reducing the number of cores and increasing the clock speeds, maintaining the same computing performance level. But it involves an increased amount of heat that the cooling system has to dissipate, where traditional air-cooling systems start meeting their limits. While it can easily be managed by immersion liquid cooling systems, increasing at the same time energy efficiency with lower energy consumption.

The proof-of-concept system developed by Supermicro with 3M, Intel, Kaori and Samsung uses in fact immersion liquid cooling of different kind of Intel and Samsung electronic devices in a cooling tank with plate heat exchangers filled with 3M Fluorinert Electronic Liquid FC-40, a dielectric liquid that demonstrated excellent compatibility with the electronic devices employed.

Tests showed then an important reduction of power consumption obtained with immersion liquid cooling of electronics, even with high performance CPUs and in extreme environments without air conditioning. Allowing the reduction of the number of cores with increased clock speeds, thus showing that immersion liquid cooling can be a green and high efficient solution also enabling lower utility costs, suitable for increasing power computing capacities required by data centers fostering the development of new technologies in the electronic design field, AI and analytics.

Source: Supermicro

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