In the semiconductor heating and cooling thermostat, the compressor is one of its core components. Once it fails, it will affect the operation of the whole system. How to solve the fault is better?
The faults of semiconductor heating and cooling thermostat compressors can be divided into motor faults and mechanical faults (including crankshafts, connecting rods, pistons, valve plates, cylinder head gaskets, etc.). Mechanical failure often causes the motor to overload or even stall, which is one of the main causes of motor damage.
The compressor motor load includes the load required to compress the gas and the load required to overcome the mechanical friction. If the pressure ratio is too large, or the pressure difference is too large, the compression process will be more difficult; the frictional resistance caused by the lubrication failure will increase, and the motor stall in extreme cases will greatly increase the motor load. Lubrication failure and increased frictional resistance are the primary causes of load anomalies.
The short circuit caused by the metal shavings of the compressor, the metal chips trapped in the windings are the main culprit for the short circuit and the low grounding insulation value. The normal vibration of the compressor during operation and the twisting of the winding by the electromagnetic force at each start-up will promote the relative motion and friction between the metal chips interposed between the windings and the winding enameled wire. Sharp edges and swarf can scratch the enameled wire insulation and cause a short circuit.
Compressor contactor problems, contactors can meet demanding conditions such as fast cycling, continuous overload and low voltage. They have a large enough area to dissipate the heat generated by the load current, and the choice of contact material prevents soldering at high currents such as startup or stall. In order to be safe and reliable, the compressor contactor must simultaneously disconnect the three-phase circuit. The method of disconnecting the two-phase circuit is not recommended.
The rated current of the compressor contactor must not be lower than the rated current on the compressor nameplate. Contactors with small specifications or poor quality cannot withstand compressor start-up, large current surges during stalling and low voltage, and are prone to single-phase or multi-phase contact jitter, soldering or even falling off, causing motor damage.
Semiconductor heating and cooling thermostat compressors may have more faults. It is not recommended for users to solve them themselves. It is recommended to contact the manufacturer for after-sales service.


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Home Tech The Tech Sector Should Listen to Those with Hearing Loss
The Tech Sector Should Listen to Those with Hearing Loss
David Cannington
Spring 2021 saw the roll-out of new TV customization and fresh content options to cabin-fevered families, such as National Geographic WILD shows added to Disney+ and custom shows created for platforms like NBC's Peacock and HBO Max. Many have already kitted out their home theater experience with an impressive array of soundbars and specialized speakers for immersive surround sound. However, the tech sector should list to those with hearing loss.
Music lovers and those seeking the experience that most strongly resembles the theater are embracing surround sound options in greater numbers. For example, systems such as Dolby's Atmos, in which each sound is recorded individually to give a more realistic perception of it depending on its proximity to the listener. For some, the age of the cinematic living room that offers a 3D multi-channel experience and the ability to 'chase the sound' with your ears is exactly what is called for to escape the pandemic stressors. With all this innovative technology, the tech sector should listen to those that have hearing impairments.
Why the tech sector should listen
However, the options for people with hearing loss remain limited. Top tech and consumer sites still recommend neck and room loops and stethosets like TV Ears for people with hearing loss looking to access something approximating surround sound. True there are wireless options that allow the TV to transmit the audio, either to a headset or hearing aid. But these options tend to conflict with other speakers connected to the television via Bluetooth. The sound is often compressed, can lag the picture, and even lacks discrete volume control. Let's be clear – this is no movie theatre, it's more like huddling around the gramophone.
The World Health Organization's World Report on Hearing reports that over 5% of the world's population – or 430 million people – require rehabilitation to address their 'disabling' hearing loss. With issues on the upper end of this range, faint or delicate audio objects may get lost, even in the peaceful setting of one's home. To deliver an optimal experience, you need products that will ensure those with hearing issues are both included and enjoy the same premium tailored experience as the other members of their family. This is why the tech sector should listen.
Quality design can ensure that the top-of-the-line soundtracks, equipped to deliver movie-quality surround sound, are available for streaming through CD-quality codecs like aptX. While not precisely the same as the surround sound unimpaired listeners enjoy, this solution can provide a preferential audio experience. Many audiophiles suggest that the number of sonic drivers is a key component in replicating high-quality surround sound in a headphone or earbud form factor. Consumer Reports found that shoddy devices "could actually further diminish your ability to hear," underscoring the importance of top-notch audio.
But it's one thing for the millions of Americans with mild to moderate hearing loss to be missing first-class entertainment. It's quite another that they're disproportionately losing out on social interactions. Remote work, distance learning and lockdowns mean we all now must rely more on Zoom and phone calls in our daily lives. This makes it harder to get all the in-person social cues that help everyone navigate work and social relationships. This could prove a disadvantage for some, feeling that Zoom fatigue adds to their mental fatigue. The tech sector should listen to those with hearing and other impairments.
The very people who require hearing assistance most are those afforded the fewest options. The pandemic has reduced access for in-person services like visiting an audiologist. Those with hearing loss of any kind may be feeling disproportionately isolated during a time when everyone is isolated. It's well-documented in audiology research that improved hearing health supports memory, retention, and brain function. Older adults with untreated hearing loss may incur health care costs on the magnitude of 46 percent greater than those who access support, according to a study from Johns Hopkins Bloomberg School of Public Health. Over a decade, these costs could amount to $22,434 per person. Mild hearing loss can double the risk of an adult contracting dementia; moderate hearing loss can triple this risk.
Stop, listen and improve
Tech executives should not overlook these trends: the growing number of Americans who require hearing assistance, the desire to participate in premium experiences like surround sound, the added strain brought on by the pandemic, and the concerns or stigma associated with certain hearing assistive devices.
In an age where consumers have more choice over streaming TV content, that they can enjoy on larger screens with even more sophisticated cinematic audio, let's not forget those with hearing loss. Sure, they want to enjoy the movie or the sports game just as much as the rest of their family. But they face bigger challenges, in this remote world, just getting their work done, connecting with loved ones, and feeling connected. To me, that sounds like a problem worth solving – affordable, accessible hearing health. That's why it's important that the tech sector should listen to those with hearing loss.
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David Cannington is a seasoned international sales and marketing executive with experience across the consumer and technology sectors. David was the CMO for Sensear where he developed his passion for commercializing audio technology devices. He has advised many startups on go-to-market and growth strategies and was the founding CEO of ANZA Technology Network, a leading cross-pacific technology entrepreneurs network.
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Blue Zones are Places Where People Live Much Longer Than Average
Written by Reuben Westmaas
Humans have been searching for the fountain of youth ever since we climbed down from the trees. We'd say that it's an impossible dream, except that there are so many communities around the world that seem to have found their own sources of anti-aging. What makes these so-called "Blue Zones" so healthy, and what can we learn from them?
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The Bluest Places on Earth
So what is a Blue Zone? In broad terms, it's a place where people live to be 100 at extraordinarily high rates, have an extraordinarily average high life expectancy, or an extraordinarily low mortality rate for middle-aged people. When National Geographic explorer Dan Buettner first started looking into these strangely healthy places, he began to note certain similarities that tied them all together. But where are they?
You'll find them all over the world. The first spot that grabbed Buettner's attention was Sardinia, a large Italian island just north of Tunisia. It has the most men over 100 in the world — everywhere else, there are five centenarian women for every centenarian man, but on Sardinia, the ratio is 1-to-1.
The Japanese island of Okinawa is another Blue Zone, and Okinawan women have the longest average life expectancy of anyone on the planet. Back in the Mediterranean, elderly Greek residents of Ikaria live eight years longer than average and have a much lower dementia rate on average. And across the ocean in the Americas, you've got plenty of centenarians in the Nicoya Peninsula in Costa Rica, and Loma Linda, California, is home to an Adventist community that lives longer than anyone else in the United States.
One thing that immediately pops out is how close all of these places are to the ocean. It's probably not very surprising, therefore, that Buettner links a seafood-oriented diet with a longer lifespan. But it isn't just about eating fish — many of these places have strangely similar eating habits, including heaping helpings of legumes and enjoying a (moderate) amount of wine. There's more, too, but we can't go over every aspect of diet here. Check out Buettner's "The Blue Zone Solution" for a dietary prescription from the oldest nonnas on the planet.
Living Your Bluest Life
But how you eat isn't the only thing that determines how long you'll live. In fact, Buettner and his associates have instead identified a series of behavioral and environmental factors at play that keep people in these few places healthier, longer. Here are a few of the key ingredients:
Natural Motion. Blue Zoners aren't taking up Jazzercise; they're staying active naturally by keeping up physical work they've done their whole lives.
Purpose. In virtually every Blue Zone, elderly people are encouraged to stay active and support the community — retirement may not be very good for you!
Down Shift. While stress is a universal part of life, no matter what color your zone, Blue Zones often have cultural practices designed to lessen stress and blow off steam.
80% Rule. Okinawans specifically live by this directive: Stop eating when you are 80 percent full. It's an easy way to hit the sweet spot between "enough" and "too much."
Vegetarian Habits. Almost all of the places on the Blue Zone list have a long tradition of favoring vegetarian cuisine (even if they aren't strictly vegetarian).
That's just the first half of the rules, but it all makes a certain sense. Healthy living, healthy motion, and a healthy sense of purpose — it all adds up to a long and happy life.
Want to find out more about Blue Zones? Check out Dan Buettner's original book, "The Blue Zones: Lessons for Living Longer" or for a lifestyle recommendation you can start applying today, see his newest work, "The Blue Zone Solution." If you make any purchases from these links, you help to support Curiosity.
Written by Reuben Westmaas October 19, 2017
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