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Old Posted Sep 9, 2025, 3:44 AM
BolliBatlu's Avatar
BolliBatlu BolliBatlu is offline
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Silicon Beach as Semiconductor Hub: Part-2


(The picture is changed slightly as it is better to use warm sea water as input to desalination plant due to high viscosity & salinity of cold deepsea water. Better to discharge effluents at a depth of more than 400 meters so to match salinity levels hence avoid negative impacts on marine life. But ground based desalination plant itself is not needed if Note-2 Deep-Sea Reverse Osmosis desalination plant is used.)
Previous version of the picture

The above diagram is for an Industrial Park consisting of Semiconductor Manufacturing Plants & Data Centers. It also shows Desalination Plant Effluents Reuse Plants. Earlier there was a news that Mangalore Fisheries College is working on Desalination Plants 1. Hope they will be ready soon with many products derived from desalination plant effluents. The project may be implemented in Padubidri KIADB industrial area (earlier identified for UPCL expansion) or Kotekar-Talapady region depending upon availability of land near seashore. Anyway diagram above is not a waste if the project is not implemented here also, Andhra Pradesh will implement it. Don't worry, only over populated metropolitan city which can implement project is Chennai. Apart from Andhra Pradesh & Southern Karnataka, Kerala & Odisha can also implement the project easily. But Mangaluru is at most advantageous position due to the reasons explained the earlier post on the topic.

As Esyasoft focuses on sustainable development it may also be involved in planning for sustainable data centers & semiconductor manufacturing. Definitely Adani Group may also be interested in researching on sustainable data centers & semiconductor plants.

The cooling system can be implemented in different ways including the one like google data center Hamina, Finland. Google may be directly taking nearby seawater as Finland is having a cooler climate but our proposal is to take from deep sea hence slightly expensive. Need for mixing of hot sea water with cold sea water before releasing back to sea (so that marine fauna & flora are not affected) has to be studied further (but in the diagram above mixing is not shown). Probably, as we are using very cold deepsea water, if we are able to circulate water and exchange heat at a faster rate and water remains just warm after exchange then mixing may not be needed. We also include reuse of used warm saline water by having desalination plant (hope that salinity doesn't change much with depth) and then reuse of desalination effluents. This can be studied with the help of Esyasoft or other consultants. Water from desalination plant is used for heat exchange (as saline water is significantly more corrosive than fresh water) & also other usual uses. Even recirculating hot desalinated water from cooling systems can be tapped out & used for other purposes.

Note that viscosity of cold water is high & warm water is low. By mixing of cold water with hot water we can adjust suitable temperature for reverse osmosis before desalination.

The industrial park with seawater pipeline facility and desalination facility can be created by an authority owning the park. Even undersea data cable can be provided.

The whole Industrial Park can be implemented as a net-zero facility by having floating solar panels or wind mills. Of course Floating Data Centers can be far easily made net-zero & can be much nearer to deep sea.

Hamina, Finland – Google Data Center Location
Google's Latest Data Center Is Cooled Entirely With Ocean Water
Googles Hamina Data Center
Google's Data Center in Hamina, Finland

Floating data centers
Google's Amazing Floating Data Centers

Subsea data centers
China just dropped a supercomputer into the ocean
Subsea Supercomputing

Note-1:

Apart from data centers & semiconductor plants it would be interesting to study whether cold sea water can be used for cooling quantum computers. China might have done this but how cryogrenic temperatures close to absolute zero are achieved is not clear. Anyway, it is left to our discretion to believe made in China products.

google "quantum computer cooling system + sea water cooling"
Quote:
A quantum computer's core requirement for near-absolute zero cooling can be met by leveraging a seawater-cooled heat exchange system, as seen in China's floating quantum computing center.
Note-2:

Deep-Sea Reverse Osmosis (DSRO)

Deep-Sea Reverse Osmosis salient features:
  • Desalination or reverse osmosis happens due to sea water pressure at deeper depth of above 400 meters
  • Huge energy saving as deep sea potential energy is used for reverse osmosis
  • Deep sea pressure (i.e., osmotic pressure) itself pumps fresh water after desalination towards ground
  • We need not worry that deep sea water is more saline as deep sea pressure itself is used as energy for desalination
  • Marine life will not be affected by brine water release as in case of normal desalination plant because a small percentage of water is extracted at deeper depth
  • Only issue is maintenance of plant at depth
The company Flocean already working on Deep-Sea Reverse Osmosis projects in Maldives.

How Deep Sea Water is Now Drinkable
One answer to more sustainable desalination? Go 400m underwater

Subsea Desalination | Flocean
Waterise – Fresh water for all – sustainable desalination

It is interesting to know what type of osmosis membrane they are using as cold water at deeper depth has higher viscosity apart from salinity.

Anyway, if this is feasible, then we need not have desalination plant on ground in the above picture and also heat exchange between saline & fresh water will not be necessary.

Will Flocean be interested in manufacturing deep-sea desalination membranes/equipments as a part of ETCA Hub planned in Mangaluru?

By the way cold water can be used to air condition entire industrial park directly if drawn from a depth of more than 400 meters (temperature at a depth of 400 meters will be 5 to 6°C) and submarine desalination plant & thermally insulated submarine waterpipe is capable of holding on to the temperature during transportation.

google "air conditioning water temperature"
Quote:
Air conditioning uses chilled water at temperatures between 4.4 to 7.2 °C (40 to 45 °F) to cool indoor spaces via an air handler. In contrast, some heat pump systems heat water to between 55 to 60 °C (131 to 140 °F). The temperature depends on the specific system, with chilled water systems using very cold water, while heat pump systems can heat water to higher temperatures.
Is there anyone working on deep seabots (Remotely Operated Vehicles (ROVs) and Autonomous Underwater Vehicles (AUVs)) used for maintenance in deep sea environments?

We can have both DSRO plant & ground based desalination plant if we want to create a kind of redundancy as a part of water grid.

Note-3:

It will be interesting to explore whether waste hot water from data center & semiconductor plants can be used for thermochemical water splitting for green hydrogen production. Thermochemical water splitting requires high input temperatures, generally between 500°C and 2,000°C. Output temperature of circulating water in data centers vary from 13°C to 47°C. Where as in semiconductor plants output temperature of circulating water vary from 20°C to 80°C. So, integrating green hydrogen plants with data centers & semiconductor plants will result in a bit of energy saving if we prefer to use deep-sea reverse osmosis water for green hydrogen production (water is not circulated but reused). The sea water temperature at a depth of 400 meters will be 5-6°C & 800 meters will be 0-4°C in the tropics. Anyway, saving will not be as huge as geothermal plant waste water reuse for green hydrogen production.

Hydrogen Production: Thermochemical Water Splitting
Turning Geothermal Waste into Hydrogen Power

Note-4

Quote:
Originally Posted by BolliBatlu View Post

Baggundi Lake set for Rs 20 crore revival under AMRUT scheme
Quote:
Government records list the original lake area at 13 acres, but plans are underway to include an additional 72 acres previously allocated to JESCO, an industrial project. This broader land base opens the door for a more ambitious redevelopment vision.
Out of 950 acres JESCO land 159.03 acres goes to Indian Coast Guard Academy & a few more might have been already uised for other purposes. How much land is left out now? Can a 10 acres film city come up here itself? Or can the remaining land, after developing Baggundi Lake Park, be used for Data Center & Semiconductor Park?
How much industrial area land is available in Tannirbhavi?

Earlier post:

Quote:
Originally Posted by BolliBatlu View Post
Interestingly, Silicon Valley of America got its name because of its semiconductor industries. Silicon is a major part of semiconductor chips hence the name of the region. There is high opportunity for Silicon Beach also to adhere to this criteria by developing as a semiconductor hub.

MSEZL_ Annual Report_ 2017-18_Final

MSEZ as such wanted to attract chip manufacturers as mentioned in the above document. Earlier Mangalore SEZ had signed an MoU/EoI with a semiconductor manufacturer also (I don't remember name exactly, could be AT&T or Applied Materials). But this couldn't materialize because of no encouragement from the state government in spite of Mangaluru having many advantages. Let us study these advantages.

First of all, most of semiconductor hubs of the world are located near sea & port as illustrated below.
  • America - Silicon Valley is located in San Francisco Bay
  • China - Major semiconductor hubs like Shanghai, Shenzhen are located near sea within 10 km. Even Beijing is just 100 km away from sea.
  • Taiwan - Semiconductor Hub Hsinchu located near sea within 10 km.
  • South Korea - Semiconductor Hub Yongin is 50 km away from sea.
  • Japan - Semiconductor Hub Kumamoto is just 4 km from sea.
  • Vietnam - Semiconductor Hubs Da Nang is 2 km & Ho Chi Minh City is just 20 km from sea.
  • Netherlands - Eindhoven is 80 km away from sea. (minor hub)
  • Germany - Dresden (Silicon Saxony) is the only semiconductor hub more than 200 km away from sea. (minor hub)
  • Israel - Tel Aviv, Haifa & Migdal Haemek (Silicon Wadi) - Tel Aviv & Haifa are port cities. Migdal Haemek is just 20 km away from sea. (minor hubs)
Main requirements for semiconductor industries are land, electric power, water & raw materials. In fact semiconductor industries consume huge quantitiess of water. Apart from these, getting human resources in Tulunadu is not an issue as literacy rate is the highest in Karnataka & the region produces large number of engineering & diploma graduates.

Land

Let us start with land requirements. Gujarat's Dholera Vedanta-Foxconn (now cancelled), largest semiconductor plant proposed so far, required about 200 acres. Finding such land parcels is not at all an issue in Silicon Beach. In many places 200 acres government lands are available without going through any acquisition pains. There are plenty of barren lands.

ಯುಪಿಸಿಎಲ್ ಎರಡನೇ ಹಂತದ 530 ಎಕರೆ ಜಾಗವನ್ನು ಕೆಇಎಡಿಬಿ ವಾಪಾಸ್ಸು ಪಡೆದುಕೊಂಡಿದೆ

Power

Electric Power is also not an issue in Tulunadu. In fact UPCL wants to export excess power to Kerala - Villagers to hold demonstration against laying 400 kV power line on farmland. Semiconductor industries can exploit this abundance of power. Of course, for carbon credits, getting green power is also not an issue.

Raw / input materials

Silica sand (SiO2) is abundantly available in Tulunadu. In fact Undivided South Canara is the only region in Karnataka where silica sand is easily available. Other alternates like gallium nitride (GaN), silicon carbide (SiC) are not easily available anywhere in India.

google search for "silica sand coastal karnataka" yields


A Note on Silica Sands of South Kanara Coast, Karnataka, India
A Note on Silica Sands of South Kanara Coast, Karnataka, India
Top White Silica Sand Manufacturers in Mangalore
Silica sand is illegally mined in Udupi coastal area

It will be interesting to investigate the illegal silica sand miners are serving industries in which region. We should be careful enough to extract silica sand without affecting coast & environment. It has to be used for generating jobs for locals here itself not to supply industries in other places. Please note that irrespective of whether Karnataka will have semiconductors industries here or somewhere else silica sand will be mined here only. So, better let us have semiconductor industries here itself. Only solution against sea erosion due to illegal sand mining is proper monitoring against rules violation of these activities by alert citizen groups.

If there is necessity of importing silica sand from other countries then it is easy due to availability of port. (Just imagine Maharaja Corridor importing sand in aeroplanes).

Harnessing India's chemical expertise for semiconductor ecosystem development


google search for "petrochemicals for semiconductor industry" yields


How Gujarat Is Shaping Up As India's Semiconductor Hub, Building On Its Strength As An Economic Powerhouse


Mangaluru is already a Chemical Hub & in addition, planned Petrochemical Hub will further strengthen it. BASF globally offers a wide range of speciality chemicals and solutions for the semiconductor industry, including those used in cleaning, etching, photolithography, chemical mechanical planarization (CMP), and wet deposition processes. BASF in Mangaluru has enough land in its possession (200 hectares compared to its 23.44 hectares in Dahej) to expand & cater to semiconductor industrial needs of speciality chemicals. Also industries at proposed Plastic Park can economically supply semiconductor plastics.

Other raw materials, required in small quantities, can be imported through NMPT (does Adani have rare earth materials mine in Australia? Monazite deposists are found in coastal Karnataka). Of course copper , aluminium, tin, Nitrogen, Oxygen are also needed. Gold can be smuggled from Dubai <- a joke.

The Global Semiconductor Supply Chain: Key Inputs

Water

Although the project mentioned in the following quora link is cancelled now it would be helpful to read & know how Gujarat won this project in spite of tough competition from other states.

Why did the Vedanta-Foxconn semiconductor manufacturing facility choose Gujarat over Maharashtra and other states? - Quora

Main reason mentioned in the above link is water cost apart from land, power & speciality chemicals.

How Gujarat Is Shaping Up As India's Semiconductor Hub, Building On Its Strength As An Economic Powerhouse


The Secret to Expanding Semiconductor Manufacturing in the U.S.? Water
Semiconductor manufacturing and big tech's water challenge

Ultrapure water is got through desalination. Mangalore SEZ already has a desalination plant.

There is also chance of using Sea Water Cooling System 2. Sea water cools transfer liquids which in turn cools semiconductor plants. There could be inbetween stage of pure water also between sea water & transfer liquid. Anyone interested to do R&D on this? Sea Water Cooling infrastructure can be provided by SEZ or Industrial Park developers.

Google search of "sea water cooled semiconductor plant" yields the following solution.


Same water drawn from sea for cooling can be used to get fresh water by desalination.

Google search of "seawater cooling plus desalination" yields the following solution.


In India currently semiconductor plant works are going on in Gujarat & Assam. Assam's Morigaon has advantage of Brahmaputra river which gives enough water & has potential to generate plenty of electricity. India also planning to construct a huge dam across Brahmaputra for strategical reasons. But Assam may have disadvantage of not having sea port & also procuring speciality chemicals. Even Gujarat's Dholera is far away from sea, about 200 km. And Sanand is 350 km away from sea. Anyway they may be planning to ship finished semiconductor products through air or land & also be planning to have downstream industries there itself to cater to local needs. But Surat being just 50 km away from Hazira port has a small semiconductor plant. Does that mean India doesn't care for port-based semiconductor industries? May not be. Panvel Semiconductor plant proposed by Maharashtra is just 25 km away from sea & Taloja is 14 km away from sea. Tamilnadu is planning to have one in Chennai itself.

Karnataka was intially planning to develop Green Hydrogen Hub in Tumakuru. But due to water scarcity & port requirement the state government was forced to shift the hub to Mangaluru. Now, the corridor identified for semiconductor manufacturing by the state has a similar water disadvantage. Let us call this Maharaja Corridor and have a brief comparative study with Silicon Beach on water issues. (Maharaja Corridor because it has the luxury of bearing cost of importing everything else except land like water, silica sand, speciality chemicals etc from other places & exporting through far off sea ports at high cost).

The following clippings are from Hosadigantha except the last one which is from Udayavani.

Save Sharavathi Tailrace





Pumping from brooks & couloirs of Yettinahole + Eyes on Sharavathi Reserved Forest







Yettinahole Expansion Not Needed



Tender for Sharavati Tailrace - A Hideout Game



Why do Karntaka government want to destroy everything? Why this pigheadedness when better alternate option for Semiconductor Hub is available? I don't want to guess how much land each politician may be having along Maharaja Corridor as they have mastered the art of walking out clean from honourable courts.

The government may claim that Yettinahole & Sharavathi water is not for semiconductor plants but for domestic purposes and semiconductor plants will use Kaveri water. But Tamil Nadu will object to this as Kaveri quota for the city is meant for drinking water only.

One more water hurdle to Maharaja Corridor - No Mekedatu Dam Without Tamil Nadu’s Consent: Minister Duraimurugan

Vented Dams Effect: Groundwater Level Increased



Comparatively, Tulunadu has potential for many more dams to cater water needs of semiconductor industries. As an option semiconductor manufacturers can be asked to construct dams themselves. Also there is sea water desalination option.

Strategy

We need two teams. Let us call these teams as legal team & technical team. Legal team will campaign to save Yettinahole & Sharavathi Tailrace with full noise. Technical team will work silently for establishment of Semiconductor Hub in Silicon Beach.

I request legal team or Save Yettinahole & Sharavathi Tailrace campaigners who want to file PIL in their petition to show availability of alternate/better option for water guzzling semiconductor plants. They should also ask for the measures taken by the state government to decrease the population of Maharaja Corridor. There is every possibility to prove in the court that Silicon Beach is better option for semiconductor hub than Maharaja Corridor by collecting & providing all relevant documents as evidence.

Whereas techical team will arrange for a meeting with various stakeholders like BASF (speciality chemicals), a few semiconductor companies including Adani, silica sand manufacturers, TiE-Mangalore, KCCI, MSEZ, MRPL (speciality chemicals + plastic), GSI, NITK, MU to explore possibilities.

Silicon Beach Program (SBP) needs to expand its scope to promote Mangaluru to semiconductor manufacturers.

Along with this Mangaluru University has to strengthen its Solid State Physics & Chemistry departments. NITK has to strengthen its Electronics, Material Science, Chemical Engineering & Compuer Science (chip design) departments, we need good mechanical engineers knowing semiconductor machinery & even civil engineers with knowledge of cleanrooms, structural enginneering etc. Tulunadu deserves an NIELIT & an Indian Institutes of Science Education and Research (IISER).

A list has to be prepared on Tulunadu-origin semiconductor experts working across country & world and how many of them are ready to return (Back to Ooru) if opportunity is provided here itself. The list has to be made available to potential companies ready to invest in Tulunadu.

We may start with a small semiconductor plant like the one in Surat.

Will Adani be interested to put up a semiconductor plant in Mangaluru & then Adani University catering to semiconductor/data center education and R&D? Adani can use UPCL excess power itself for semiconductor plant. If materialized it will provide a big boost to both passenger & cargo traffic of MIA. I won't be surprised if they now plan for semiconductor plant at Yellur in place of Data Centre or both. This is the one sharp-minded business group which knows how to exploit opportunities.

Potentially, we can have semiconductor plants at Yellur (530 acres KIADB land), Belapu, Karnire (proposed for industries), Kinya-Someshawara etc near sea as cool water will be available within 40 km from shore at 800 meters depth. In case of Karnire, Green Hydrogen plants can use desalinated water after cooling semiconductor plants. Note that desalination plants are well spread out in this way, hence will not have much effect on increasing salinity level of nearby sea.

Note that all districts of Malenadu will also be benefited by this as many Eelectronics industries can come up there instead of Maharaja Corridor backyard.

Why is the central government not declaring water rich regions as potential regions for semiconductor industries? Why is it allowing water starved, over populated, unviable regions to be declared as hubs for semiconductor industries?

The state government may argue doing all these things ourselves is protocol violation. But please don't care for this government which doesn't care for Karavali & Malenadu.

MP Brijesh Chowta meets Modi, discusses Mangaluru’s future


Did the MP talk about his plan on how to develop Mangaluru as a Semiconductor Hub? Or at least Energy Transition & Climate Action Industrial Hub?



All we need to prove the potential of Mangaluru is just one meeting among stake holders!

Last edited by BolliBatlu; Nov 15, 2025 at 9:24 AM. Reason: added the link to precious version of the picture for reference
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