where to start? (For disclosure: One of our divisions designs, sells and installs fully Customized AHU (Air Handling Units), so I’ve got over a decade of engineering, sales and hands-on experience all mixed together Strength: Typically, double skin, a.k.a. double wall, AHU construction is stronger. It will flex less. As the AHU operates across varying conditions (CFM, pressures, temperatures, humidity) the skin will flex, expanding and contracting. It is not only possible to measure this, but measuring the flex (known as deflection testing) is highly recommended. A good rule of thumb is: ‘the less flexing you have, the higher the unit’s quality’. Of course there are exceptions to this, but having seen every brand under the sun, and having walked inside every major AHU brand (yes, I’m talking 50,000 CFM+ units that are as big as a mobile home and bigger), unit deflection is a very good indicator of overall build quality. Without going into the engineering aspects of material strength, moments, etc., double wall/double skin construction is almost always going to be stronger. However, the thickness of the double skin is not always indicative of how strong a unit is. I can point you to some non-engineering resources that can illustrate this for you. For example, an article on our website: Healthcare HVAC and AHU Replacement goes over some basics of why, for many applications, a double wall AHU is best. We also did a pretty cool time-lapse video that has made the rounds in the commercial HVAC industry, including leading engineers, the biggest healthcare groups in the U.S., pharmaceuticals (yes, the big ones), and tech-manufacturing: MonMan Air Handler Replacement Video I put this video here because it literally shows you how a true custom, double-wall air handling unit is built from scratch. (It’s time lapse and moves quickly, so it’s easy to miss the details; I’d recommend changing the YouTube playback settings to half speed or even 0.25x speed for certain parts.) Many specifications default to a standard wall thickness of something like 4″ thick, or even 6″ thick. The usual reasoning behind this is that the thicker the unit is, the more insulated it is. I feel that is largely a fallacy. Most of the AHUs we install for our high tech and healthcare customers are 2″-3″ thick (the thickness of the walls.) It is simple to meet most R-value insulation requirements with polyisocyanurate foam filling the entire cavity between inner and outer skins. If you want a 6″ thick unit, you’re just being excessive, wasting space and money. A single wall unit (like a residential or light commercial AHU) will almost always be single wall. You’ll have a cheap, galvanized sheet metal box that flexes, bends, rusts and breaks. And on the inside, you’ll often see some cheap fiberglass insulation. I have a huge problem with single wall units with fiberglass insulation. The fiberglass can get wet. It can breed mold. (We did an extensive microbiological study in a hospital - one of the largest hospitals in the U.S. when you count number of patient beds - and single-wall air handlers were a big culprit: The Top 5 Weird Bacteria Hiding Inside Your Hospital.) And the little things, like rodents, that can easily get into a single wallAHU, and start nesting in the insulation, that few people think about unless they are an HVAC technician and have to work on the AHU. Yes, I’ve seen mice, rats and squirrels living, reproducing, and all their other bodily functions, right inside an air handling unit, in the middle of a hospital mechanical room that serves patient areas

Innovative Features: This washing machine comes with Variodrum that treat the clothes gently at the same time gives them a complete clean wash. The Varioperfect function gets the clothes washed in 20percent lesser energy consumption. The washing machine has been designed with Anti-vibration sidewalls that keep the machine silent even during high speed spins. The washing machine allows adding of left over laundry if the water or wash levels permits. The super 15 option allows you to quickly wash lightly stained garments. ActiveWater: A clever feature that adjusts the level of water by sensing the amount of load. In fact, it reduces the water usage that helps reduce electricity. Not just that, it uses hot water to remove the detergent residue and bacteria formed inside the washdrum, increasing the life of the machine and giving you a perfect washingexperience. AllergyPlus and ECARF : World’s 1st washing machine with ECARF (European Centre for Allergy Research Foundation) certified programme to reassure you of a perfectly hygienic programme. Washes away the detergent residue left on your clothes. Just one push of a button, and no more allergies. Anti Vibration Design: Now sleep peacefully at night while your washing machine works without much noise. The AntiVibration Design of Bosch washing machines reduce vibrations during the spin cycle and are designed to ensure the machine does not shake when in action. Reload Function: Forgot a sock or shirt after starting the wash cycle or mixed a coloured item in with the load of white laundry? The reload option allows you to open the door early in the cycle to add or remove the items easily. SpeedPerfect: Perfect for those in a hurry - reduce wash time by up to 65% without compromising on wash results with this option and enjoy more time to do the things you love. Time Delay 24hrs: The Time Delay 24hrs function lets you delay your wash cycle between 1 to 24 hours, so you don’t have to wait for it to finish. You can set the time and delay the wash cycle to give you fresh laundry, when you need it. VoltCheck: Designed specially to deal with fl uctuations and interruptions in your power supply, VoltCheck not only features an indicator that blinks whenever this happens but also automatically resumes the wash from the last cycle when stable power is available. Super 15’/30’ Programme: Running late for work, but still have to do your laundry? Here’s a quick solution. Wash, rinse and spin up to 2kgs of your lightly soiled laundry in 15 to 30 mins with the Super 15’/30’ Programme. Monsoon Program Monsoon - Whether it’s freshening up wet or lightly soiled clothes or removing odours from damp clothes that remain after cold washing – our Monsoon Program will get the job done quickly and easily. This wash program with a warm final rinse cycle reduces moisture and shortens the drying process by 10% for quicker drying – perfect for wet and humid monsoon seasons. WaterPlus: This unique feature is very effective in areas that receive soft water. Soft water leads to extra lathering that requires extra usage of water to ensure thorough rinsing of your clothes so that no detergent residue remains on them. WaterPlus has been designed to increase the level of water during the wash and rinse cycle, making sure every wash is perfect. Vario Drum: It’s built to be tough on the stains and gentle on your clothes. Its asymmetric paddles powers heavy-duty washing and raindrops drum surface design is gentle on the clothes. Its advanced water flow system ensures efficient distribution of water and detergent throughout the wash, so that you don’t waste time soaking your laundry. Warranty: 10 years warranty on motor ensures our products are of the highest standard and quality. EcoPerfect: Save energy consumption with EcoPerfect. Its load and flow sensor detects the laundry load volume along with the kind of fabric. This information is then passed on to the temperature sensor, which takes into account the additional time available and prolongs the heating process. This allows the detergents to get activated by increasing the agitation level, saving electricity while giving perfect wash results.

Both liberals and conservatives are fighting imaginary wars that have no real solutions as the problems are not real. Climate change is real but it will take 50 years of technology to solve in the US, Europe and other modern nations. However, in third world countries this will drag on for perhaps one hundred years. 40 years ago Jimmy Carter passed laws to make cars obtain 27 miles per gallon. My current cars average around 21–22 miles per gallon. Plus all the additional traffic signs and left turn lanes and modern cities walling off residential streets probably waste 15–20% auto fuel due to waiting and stopping at all these signs. Auto makers cannot overcome these obstacles unless we force cities to allow more traffic on residential streets and use more parallel roads as we did 100 years ago. We have national programs to reduce energy construction in new government buildings that add 15% additional costs but architects continue to build buildings with massive windows and minimal insulation in the walls. 40 years ago I typically added 20–25% more horsepower to every fan and pump due to architects using poor building insulation, cheap window glass and inadequate space to fit this equipment. As a state engineer I have observed the need to knock down walls to hide air conditioning equipment that would not work. Almost 15 years ago the National Building code made it illegal for architects to design buildings such that equipment could not physically be installed to work as intended. Manufacturer data on clearances and servicing is ignored by architects and we should criminally prosecute the entire profession to stop this negligent practice. Minnesota has a law for 15 years requiring new and remodeled government buildings to use 30% less energy than what the Energy Code Allows. Most architects design buildings walls taller to show the window area is reduced based on more wall area. The Andersen Building on the State Capitol Complex did not have enough space to use energy efficient fans and duct design. The result is there is somewhere around 900 horsepower of fan motors. An efficient design allowing adequate space for equipment and ductwork in the ceilings could probably save 400 horsepower. We have laws requiring that fire hydrants be tested to verify they provide adequate water to fight fires. I have found most are never tested and observed broken ones shutdown. I have read many articles that indicate the about 25% of all fire sprinkler systems have inadequate water flow and organic obstructions growing in the piping. Perhaps 20–25% of fire alarm systems, smoke detectors in large buildings are defective and left unrepaired. Almost 100 years ago it was common to wrap copper wire with paper and install inside a lead pipe. The pipe was filled with oil and glass ferals installed on each end to keep the two metals from touching each other. The State Capitol Complex in Minnesota has many of these feeders with 13,800 volts of electricity and have not been inspected for decades. I hope you take the time to read this and understand we need to do something about this and like right now.

Yes, but project complexity depends on details.

Are you charging batteries, synchronising to grid, or powering switching power supplies of computers and such?
Is the mechanical power supply continuous hydroelectric or intermittent wind-/pedal powered?
These details are crucial to decide what kind of motor would be best to turn into a generator, what kind of step-up gear it needs to make useful power, and what kind of power regulator is needed to make the generated electricity usable.

There are many types of motors in washing machines:
What type of motor is used in washing machine?
Is Washing machine motor a dc or an ac?
What is better, direct drive motors or belt drive motors in a washing machine?

Permanent magnet motors are nice not needing external excitation current to start working, but unfortunately their output voltage and frequency vary with speed, so you’ll probably need to run that messy electricity through battery charger, battery bank, and inverter before use in appliances.