Tesla EV compatible home HVAC thoughts

Discussion in 'Tesla' started by 101101, Mar 28, 2020.

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  1. 101101

    101101 Well-Known Member

    Of course EV and home HVAC could communicate in a privacy protected way. And of course 2 way power to vehicle makes some sense here to augment power walls. But I'd like Tesla to fundamentally reinvent what one of these systems can do in terms of principles and cost/performance and installation. Let the bar be raised on practical expectations in this area. Critical to get new home builders on board so it can be done right from the start!

    Function
    Naturally heat pumps will be used where it makes sense which is almost everywhere now.
    It should monitor temp, humidity, CO2, CO, VOC and smoke particles with appropriate alarms. Great if it makes fresh water but let that water accumulate in tempered glass (with spigot) and use tubing made of non-reactive, non-leaching metal.- no sht plastic. And naturally there should be a UV filter for viral, and proper Ionic component to improve the HEPA but make a ionic system that doesn't have to be scraped or is self-cleaning- use something like the laser windshield cleaner or other self - cleaning design, also make sure the polarity of the ions is correct as the wrong polarity can bring anemai and other serious issues in humans and pets. And it makes sense for vehicles now to have the UV IONIC components added to their HEPA systems.

    Installation & Design
    The design can be largely automated by software. A technician with a phone and add on range finder and temperature sensor can walk the interior and exterior and get a concise map of everything. As the tech waves the phone the software highlights items and identifies them and tech approves definition or selects from drop down or provides verbal input with screen confirmation by software. It would map or guestimate all the doors, hall ways, windows , appliances, ducts, switches, sockets, and guess pipes based on locations of faucets, commodes and even get the thicknesses of all windows and doors. It would be list driven with certain vital components checked of as the tech went. But might as well even note the furniture placements. And can request the customer to leave climate off prior to arrival so the system can check ambient temps in the room prior to arrival. From all this a neural net type data processing will provide a precise schematic of the home. And then software will build an optimized system that a tech can then adjust if necessary. Ducting should be air tight snap together aluminum with no sealant needed. Earth quack shouldn't shake it lose. Interior of ducts should be coated to improve air flow and resist build up. System shouldn't work if HEPA isn't in place and it should be impossible to improperly install HEPA- obvious but isn't the case with some systems.

    Tech should just be able to pick up the customized pre bundled components packed in order of installation and follow on screen prompts checking off parts as they are installed. Could even snap pictures of the completed system as it goes to help system further optimize future constructions.

    These systems need to work with tight homes. Shouldn't be any worry about a flu virus or that type of thing getting through the efficient ventilator energy recovery system. These systems make no sense without very precision and quality energy recover air ventilation. Luckily in homes those systems tend to be simple and don't have to be the cost plus garbage the industry pitches. Stuff tends to be solid state or designed around rotary motions that life time electric motors can handle.

    Maintenance
    Systems except for do it yourself filter HEPA filter change should last and self maintain as long as a Tesla solar roof. No stupid service contracts none of those kinds of obvious rip offs. HEPA filters should last a minimum of 12 months and be easy access and easy replacement with alarm if needed earlier. Tesla should send the filter automatically when needed and it should be part of the cost of the initial system- HEPA filters really shouldn't be more than 2-3$ to manufacture. Also customer may need fold down ladders or simple appliances that provide easy access to the HEPA cartridge. They will also need sealants for interior cracks and crevices and seals for windows and doors. All that stuff should be done and last as long as a Tesla solar roof. These should coincide because it makes sense to match the number of power and PV cells to the HVAC system and it makes sense to plan for climate change curves.

    Tesla might also look at whole house water systems. What goes on our skin ends up in our blood streams. People are showering in industrial waste along with recently reprocessed sewage. I've heard that along the Mississippi river every ounce of water has been recently run through many other people's body where the practice is to put a sewage treatment plant where the sewage would output and then collect that still dirty water and put another sewage treatment plant at the input. So of course it would be good to build green hot water heating and water processing capacity into the energy system of the home- this is disaster hardening and will help cut cancers. Should be doing the same for farms- can't dump dirty gray water or lightly processed fracking water on produce and call it organic or call it a Halo tangerine.
     
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  3. bwilson4web

    bwilson4web Well-Known Member Subscriber

    I had briefly thought of the problem when I had a Prius. The first model had a separate inverter from the two motor-generators and a 375 VDC battery. Important because a 240 VAC house voltage will have 340 V peak voltage.

    The architecture is to use the 18 kW, MG1 side inverter as a bi-directional converter. Fed by the house 240 VAC voltage, the inverter converts it to DC to charge the battery pack. In power mode, the inverter generates symmetrical, 240 VAC across two poles and the 3d is the neutral held at 120 VAC relative to the other two. A 60 Hz filter smooths the input/output.

    A pseudo synchro drives the whole system including the solid-state, power relays to the distribution box. When grid power returns, stable for at least 10 seconds, the inverter shifts frequency until it matches the line and then switches out at the zero.

    Bob Wilson
     

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