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Saw the MM2 project back in 2017 and was straight away an enthusiast. My girlfriend thought it was a cool project to, but it had to be a large one. So our family could enjoy it while sitting at breakfast and could use it for checking hair and make-up before going out. For myself the news and agenda was the most important thing and it needed to blend in the interior.
At first, i bought a second hand 32" Sony Bravia for 50 euros only. Quickly installed Raspbian and the MM2 on a RPi 3B+. Connected so i could see how it looked on the screen and boy, that was awesome!
Then i ripped the tv apart which was a bit stressfull due to the size. Cable managment therefor was quite easy due to the space.
Some tricky woodwork. With a table saw i made this. Finished with a layer of ‘old oak’.
The mirror completed (with the two way mirror glass) in the workshop
Modules i used:
(added 3 calenders, work1(chalkboard_teacher), work2(user_tie), and our family calendar (heart)
(icon set to 1c, and no hourly forecast)
Curious about what you guys here think of it!
Hey! Awesome design, I really like the edgeless look! I noticed you are from Denmark as well! I’ve programmed my mirror by having trouble finding the right glass. Could you tell me where you get yours?
The title says it. I have 2 Raspberry Pi 3’s and 2 32" flat screen TVs. I need to find someone who will get the frames and 2 way Plexi or glass. I haven’t done my due diligence on which is a better material for a smart mirror. But I will provide you with the Raspberry Pi and tv if you provide me a frame and 2 way. I figure it’s less hassle than selling the extra items and then sourcing what I need. I will provide pictures and tracking I will also expect that in return. Hopefully we can help each other out and each have everything to build this nifty gadget.
In anti-seepage engineering, HDPE geomembrane is the most important anti-seepage data, it is very important to select excellent geomembrane for anti-seepage engineering.Width is an important target of geomembrane, wider width can bring many advantages to seepage control engineering.For the tailings dam or transpiration sugar and other projects with a large laid area, the wider geo membrane data should be selected.
In the anti-seepage engineering, the most easy leakage point is the welding place of geotechnical composition data.The wider the width of the geomembrane hdpe liner supplier is, the less welding seam will occur during the practical welding construction. The less the welding seam is, the smaller the possibility of leakage will be. For the anti-seepage engineering, the higher the safety coefficient will be.
In addition, the increase in the width of the geomembrane and the reduction of the weld also bring two other favorable conditions for the anti-seepage project.One is to reduce the lap loss during welding construction: compared with the geomembrane with a width of 8 meters and the geomembrane liner with a width of 7 meters, the theoretical loss rate can be reduced by 14%, which is conducive to the reduction of project cost.Another point is that because of the reduction of the weld, welding time and labor will also be cut, and then can reduce the construction cycle of anti-seepage engineering, and the corresponding human capital.This advantage in some of the strict requirements of the construction period of large-scale anti-seepage engineering, particularly significant.
The following is to introduce the key to the construction of geofilm rubble:
(1) The presence and paving of gravel shall be managed by a designated person; Professional supervision engineers are required to supervise the whole construction process.
(2) Rules for gravel transport vehicles are limited to the dedicated gravel passage with the thickness of more than 80CITI and steel plates, and the operation and construction shall be carried out in the regular time period;
(3) Gravel paving only allows caterpillar mechanical vehicles to construct on the geosynthetic liners gravel layer with a thickness of not less than 60cm, and no other mechanical vehicles are allowed to enter;
(4) Gravel dumping and spreading. It is necessary to strictly control the height (and the height of the anti-seepage layer shall not be more than 50cm), and rough operation is strictly prohibited;
(5) It is necessary to strengthen the control of the quality of gravel (particle size), in the unloading and paving process of strict inspection, once found in the extra-large particle size stones or any other debris that may damage the geomembrane, it is necessary to completely remove.
In competitive power markets, combined cycle facilities are experiencing more operating cycles than owners initially planned for at the design stage. It’s not uncommon for a combined cycle plant to experience more than 250 starts per year these days.
While the ability to cycle a large combined cycle plant is ideal for fleet flexibility, frequent startups and shutdowns strain many critical components and limit their lifetimes. Witness the relatively common boiler tube failures caused by flow-accelerated corrosion (FAC) and the premature failure of steam turbine bypass China valve inspection service. Similar problems with feedwater valves have been experienced at several combined cycle plants with different types of steam turbines and heat recovery steam generators (HRSGs).
Such problems can bring a plant down for extended periods, often without warning. Given that there are up to eight critical boiler feedwater valves per HRSG, maintenance or replacement of these valves can be very expensive. The cost of feedwater valves for a two-on-one combined cycle plant can run more than $160,000.
While many problems can be traced to frequent cycling, there are other reasons for feedwater valve damage. The non destructive testing services application is an inherently severe service; a combined-cycle plant using F-class combustion turbines will employ feedwater pressures as high as 3,000 psig, and some repowering projects have pressures climbing above 4,000 psig. Valves operating in such high feedwater pressures encounter a potential for cavitation damage.
Another common feedwater valve issue is excessive leakage, which is typically revealed by an increase in drum water level. With leakage comes damage to the internal throttling and seating surfaces of the valve. Once it is determined which valves leak, they must be opened for inspection to determine the root cause. It is important to understand the type of damage and its cause before the dimension check proper replacement or fix can be applied.
One problem occurs when feedwater valves are not specified for tight shutoff. ANSI (American National Standards Institute) and FCI (Flow Control Institute) have established criteria to denote leakage classes for control valves. Table 1 shows the corresponding leakage of 3-inch and 4-inch feedwater valves. Class V shutoff is recommended for feedwater valves exposed to cavitation conditions.
Looking at the table, it is easy to understand what can happen to the drum-level valves if they are not Class V. Flow that leaks past the seating surface will cavitate, damaging the seating surfaces of the plug and seat ring, exposing the visual inspection to further damage. It is very likely that feedwater valves in existing service may have been installed with a Class IV shutoff rating or less. To upgrade a valve without Class V (CLV) shutoff, a simple trim change (Figure 1) will solve the issue.