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Bitcoin mining in a university dorm: A cooler BTC story

Here is why a run-of-the-mill cooler is actually the perfect home for a dorm-based Bitcoin miner.

The humble university dorm is a place for students taking their undergraduate degrees to study, rest, make new friends, host wild dorm parties and, of course, mine Bitcoin (BTC). 

A master’s student in market research and self-described “data guy,” Blake Kaufman, has hooked up an S9 Bitcoin miner to the Bitcoin network.

He won the S9 miner in a raffle at a mid-Michigan Bitcoin meetup and immediately set about learning how to use it.

During a video call with Cointelegraph, Blake joked that he knew next to nothing about mining prior to the raffle. The moment he won, he raced to the nearest place offering a power cable and an ethernet connection to try it out, his dad’s office.

“We turned it on, never hearing one [an S9] before. And if you know, when they start, they immediately rev up to 100% and we’re all just in the room like — oh my gosh — this thing is loud! We ran it for probably two hours and we walked into that office and it was hot.”

The hot and noisy realization kicked his brain into gear. The Michigan winter was fast approaching and his university provides free electricity. Why not mine Bitcoin from a dorm and take advantage of the waste heat? There was one minor but audible hurdle to overcome. “How can we fix the noise,” he questioned.

“I just looked up online, like, how to noise cancel S9, and this picture of a cooler on Pinterest popped up. Me and my Dad were like, ‘Let's build it. Why not?’ So we bought a $5 cooler on Facebook Marketplace and we had the tubes in our attic and we spent about two hours drilling holes and it ended up working.”

The pair constructed the Bitcoin mining cooler box, which now takes up residence in Blake’s dorm. The finished product would not look out of place in any dorm room and is “actually quieter than an air conditioning unit,” he explains.

Two angles of the cooler-encased Bitcoin miner.

But aren’t there rules against this sort of thing at university? Won’t the energy-hungry Bitcoin miner put a dent in the university’s electricity overhead?

“So the miner is about 900 watts an hour, a mini fridge is about 60 to 100 watts a day. So it’s pulling a decent amount of electricity there. I looked up all the rules and it didn’t say anywhere you couldn’t mine a Bitcoin or use a Bitcoin miner. So if they say you can’t do this, I’d be like, okay, you didn’t say I couldn’t.”

In a nutshell, Blake’s not breaking any rules. What’s more, one miner in one dorm in a large university home to thousands of students is unlikely to raise suspicion. It’s an ode to the famous saying attributed to Rear Admiral Grace Hopper that sometimes, “It is better to ask for forgiveness than permission.”

The ASIC S9 now whirrs away, generating roughly 0.000001 BTC or 100 satoshis —  the smallest amount of a Bitcoin — per Bitcoin block, which occurs on average every 10 minutes. It translates to “about a dollar a day” in fiat-money terms. It’s a paltry amount but not to be sniffed at as a student.

Blake’s total outlay to start his Bitcoin mining venture was a coolbox and a few cables at less than $20 and he can probably reuse the cooler come summertime.

The mining cooler interior.

Incidentally, Blake’s next challenge is to work out what to do when the weather improves and the mercury rises. Peak summer days in Michigan can hit 95 degrees Fahrenheit (35 Celsius). As a result, the outside air temperature will not cool the miner, a vital part of its operation:

“So I'll have to figure out something, maybe put it in a box of ice cubes and then something like that. I don't know yet.”

Blake has already considered using the Bitcoin miner to heat his family home after graduation. The idea, Blake explains, is to experiment with whether he can offset the gas cost at home and make it profitable. “It’s just unfortunate because, in Michigan, our electricity cost is $0.14 a kilowatt hour.”

Michigan’s energy costs are relatively high in the United States, as shown by a darker purple color. Source: Chooseenergy.com

Electricity and heating costs are higher in Michigan than in energy-producing states like Texas. Using the waste heat from Bitcoin mining could be a way of offsetting the energy costs.

Related: The Bitcoin shitcoin machine: Mining BTC with biogas

Indeed, tapping into Bitcoin miner waste heat is a growing trend, particularly prevalent for at-home or “chicken shack miners,” as they’re known. Bitcoin Gandalf from the Braiins Marketing Team told Cointelegraph: 

“Chicken shack” miners are the backbone of the Bitcoin network hash rate. It’s incredible to see all the different ways they come up with to mine. They provide an invaluable service in keeping hash rate decentralized.”

Armed with oodles of Bitcoin knowledge, Blake has since tried to orange pill his classmates and even professors. Unfortunately, some of them hold the belief that “Bitcoin is a scam.” He has taken it upon himself to set the record straight: 

“I’m emailing those teachers being like, Hey, office hours, when are they? Let’s have a chat. You can’t just come out and say Bitcoin is a scam with a Bitcoiner in the room.”

In the meantime, the S9 is whirring away in his dorm room, contributing to a network Blake strongly supports and generating 100% “free money.“

Well, “Other than the $30,000-a-year tuition I pay, but it’s 100% free electricity,” he joked.

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Water great idea! Bitcoin mining heats this swimming pool

A Bitcoin miner is heating his entire swimming pool so his kids can swim–all while securing the Bitcoin network and making money.

A Bitcoiner has "pooled" off another mining innovation. The 'waste' heat generated by mining Bitcoin (BTC) is used to warm his swimming pool. 

Bitcoin enthusiast Jonathan Yuan had kids who “love swimming, but the year before [he started using waste heat], they barely ever did it because it was always too cold for them.” Fortunately, he was interested in Bitcoin mining and understood that Bitcoin mining emits a lot of heat. 

Yuan told Cointelegraph that he purchased a “heat exchanger and setup some ASICs,”  (application-specific integrated circuits), and subsequently managed to keep “the pool above 90F all summer.”

The process works by immersion,  which simultaneously cools the ASICs while "reclaiming that waste heat and putting it to practical applications such as heating living/working spaces, pools, or anything that could benefit from up to 60C/140F of heat."

The immersed ASICs underneath the swimming pool. Source: Bitcointv

However, “when the China ban happened” and the difficulty adjustment dropped, Yuan made a tricky decision. Do I mine less Bitcoin or turn the swimming pool into a bathtub?

When [the] difficulty dropped like a rock, I actually pushed all the ASICs to the limit, which brought the pool temp above 110F, so the kids had to not swim for about month or two. lol. Yes, I had to say "sorry kids, the pool is too hot, you can't swim today””

The difficulty adjustment has since risen to new highs, and his kids are able to swim again. Plus, Yuan has “made money” mining and interestingly: “the best part is the pool acted as a perfect heat buffer.”

In fact, using Bitcoin miners to heat his swimming pool is more effective than traditional methods: it keeps “temperature swings over a 24 hour period down to only 1F to 2F despite ambient temps swinging over 40F on some days.”

Yuan's pool. Warm water from Bitcoin mining comes through the yellow hose. Source:Bitcointv 

Based in Minnesota, the upper Midwestern United States, Yuan has kept the pool "toasty" even in cold temperatures:

Related: Gas heater broke down? I'll just heat my caravan with a Bitcoin miner

Yuan recommends anyone with a pool to do the same, as it’s the “perfect use case scenario” for waste heat. Now that his home mining setup has gone swimmingly, Yuan is now building a pool-specific tank that will be rated to run pool water through the heat exchanger directly.

ASICs now heat Yuan's home, and he has turned a passion project into a profession. His Bitcoin mining company, CoinHeated is “dedicated to turning Bitcoin miner waste heat into productive heat.”

The plan now is to bring pool heating projects to other homes, and he's in conversation with “manufacturers of heat exchangers that will be able to make something that won't corrode with the chemically treated pool water.”

In the meantime, the kids are able to enjoy his home swimming pool, warmed courtesy of Proof of Work. 

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Gas heater broke down? I’ll just heat my caravan with a Bitcoin miner

When a propane gas heater stopped working, Bitcoin mining came to the rescue of a cold caravan in Colorado.

Michael Schmid first made contact with Bitcoin (BTC) in 2013; he installed Bitcoin core, mined a few BTC then bought some Bitcoin from MtGox. Schmid told Cointelegraph that shortly after the infamous Mt. Gox hack, in which Schmid lost his Bitcoin, he also “lost interest”.

Timewarp to 2020 and Schmid got “very active again,” as concerns about the “endless money printing” troubled him.

“With that [money printing] I found that I don't agree at all with Fiat money and believe that Bitcoin should be the global reserve currency and a store of value.”

A studious and curious mind, Schmid bored back down the BTC mining rabbit hole, building upon the foundations of knowledge he had excavated 7 years prior. He learned about “ASICs, Antminers and all the other things that happened in the last years in the Bitcoin mining space,” before having a eureka moment.

“It makes much more sense to replace a resistive heater (like a space heater) with a bitcoin miner, as both of them will turn electricity into heat, while the bitcoin miner also generates bitcoin.”

As Schmid was working in an office at the time, he “bought an S9 from a friend and used the S9 miner instead of the space heater to heat my office which worked perfectly.” Schmid has discovered a winning combination.

Schmid's S9 miner in a box below his laptop, with a heat exhaust. Source: Michael Schmid 

He could solve valid Bitcoin blocks and reap the rewards while keeping his working and living space nice and warm. Office work aside, Schmid also enjoys traveling across America–often in his American-style campervan, an Airstream.

So when during Schmid’s next trip with his Airstream (see photos), the heating unit suffered intermittent problems, Schmid thought he “could use the S9 heater also to heat the Airstream as a fallback solution.”

The airstream, parked in snowy Colorado heated by a Bitcoin miner. Source: Michael Schmid 

They say necessity is the mother of invention so Schmid “started to think about how I [he] could build the system.” Space is at a premium in an Airstream and if the S9 were to be placed inside the camper “it would easily overheat the airstream.”

“So I came up with the idea to keep it in a box outside and route the warm air into the airstream.”
Putting the S9 outside saves space and avoids overheating. Source: Michael Schmid

After a series of iterations and a few superficial burns, a short circuit and one day in which the airstream’s ambient temperature rivaled a Scandinavian sauna: “[I] got the airstream inside temperature to 90F [32 degrees Celsius] during one day as the heater was running while it shouldn't,” Schmid finally cracked it.

The caravan was kept warm while mining Bitcoin, powered by solar panels on the roof and free campsite electricity–negating the need for burning propane gas. Schmid adds that “we have a quite small airstream (only 22ft), bigger RVs have much bigger propane heater systems and would pay much more for the propane (they could also run more S9 of course).”

But why go to all the effort equipping an RV with a Bitcoin miner? Why not try to fix the propane heater issue? 

Granted, it’s a cool Bitcoin side project. However, not only has it solved the intermittent heating issues, but Schmid “saves around 50% of the propane costs which is around $2.7 per day,” and at current estimates, he generates “0.00006259 BTC per day.”

All in, Schmid and his fiancé “technically heat the airstream for free” all while securing the Bitcoin network.

Satoshi would probably be proud of the tidy bitcoin heating setup. Source: Schmid

Related: Flower powered: Bitcoin miner heats greenhouses in the Netherlands

Schmid shared a message to any aspiring miners:

“I really encourage anybody to play with home mining, I truly believe that one of the most important things of Bitcoin is the decentralization of not only the coins but also the mining infrastructure." 

In a word of encouragement, he concludes "the more home mining setups that are out there the better.”

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Bitmain signs 500MW joint venture with sustainable BTC miner Merkle Standard

Sustainable Bitcoin mining gets a boost from the joint venture between mostly hydro-powered BTC miners Merkle Standard and infrastructure provider Bitmain.

Beijing-based Bitmain has partnered with a United States-based sustainable Bitcoin miner, Merkle Standard, which will contribute capital investment, expertise and parts.  

As part of the joint venture, Bitmain will contribute to the development of up to 500 MW of clean digital mining infrastructure at Merkle Standard's hydro-powered facilities in Eastern Washington.

Bitmain is a household name in the Bitcoin (BTC) ecosystem, famed for the Antminer brand, the name behind popular Bitcoin ASIC miners the S9 and S19. Merkle Standard claims to be a carbon-conscious BTC miner, keen to become ​​net carbon negative by year-end. Merkle Standard will install up to 150,000 Bitmain mining machines thanks to the venture.

Ruslan Zinurov, CEO of Merkle Standard, told Cointelegraph that the partnership with Bitmain will “catapult our growth plan of building one of North America’s largest sustainable digital asset mining platforms.”

In a further commentary, Josh Zappala, chief strategy officer at Merkle Standard, underlined the benefits BTC mining brings to the social fabric of local communities. With aspirations to become one of the area’s largest employers, the joint venture will introduce “35–50 full-time jobs to the site,” while “supporting local business.” He told Cointelegraph:

“Due to the flexible characteristics of the data center’s power load, we are suited to be the ideal power consumer for our power providers and look forward to providing additional support to the community.”

No strangers to scrutiny, Merkle Standard’s move reflects the trend of BTC miners worldwide upping their ESG credentials. The Bitcoin Mining Council boasted a sustainable energy mix of 58.5% in the fourth quarter of 2021, while miners in Norway are even using waste heat to dry out lumber.

Related: Intel to reveal new energy-efficient Bitcoin mining ASIC at next ISSCC

According to the press release, data center development has entered the first phase of production at the Merkle Standard mothership in Eastern Washington. The 225MW site will expand to 500MW by the second quarter of 2022.

The new equipment, including Bitmain’s S19J Pro, S19 XP, and S19+ hydro miners will come online in Eastern Washington, although Merkle Standard nods towards “various expansion locations” in 2022. Ultimately, the joint venture is one part of CEO Zinurov’s vision to “achieve industry-leading power efficiency.”

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