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Given a circular 8" duct you are dealing with an airflow area of about 50 sq/in. You currently have 72 sq/in opening. I haven't seen a picture of your register - some are not as open as others so it is hard for me to know for sure but... with 72 sq/in opening the air would just dribble out. This is fine for a floor vent that is unobstructed by walls and ...


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I live in Lahore and all both weathers are at their extremes in this city; it gets up to 55 °C in summer and -2 °C in winters. I also live on the top floor and face immense heat, plus I am not allowed to alter the house so I can't put insulation as I don't own the space. So I have installed wooden shades above the windows. Also I have covered my ...


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It sounds like you are attempting to make your own version of a space air conditioner. These are an air condition broken into two parts. The first part is an outdoor box that is the size of a brief case and then the other part is the fan that blows the cool air. The two pieces are connected by about 10 feet of semi-flexible tubing. They plug into a ...


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Depending on your specific equipment setup, you may have a variable speed condenser fan, variable speed compressor, or both. With a variable speed compressor and condenser, the system would ideally maintain stable superheat and suction pressure (effectively controlled by the Siemens superheat controller) and would maintain a stable temperature differential ...


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Former HVAC controls guy here - so I understand this stuff a little bit. Disclaimer: It has been about 10 years since I worked on this stuff so my memory is a bit rusty. The Siemens module is controlling the amount of evaporator superheat by means of modulating the TXV (thermostatic expasnion valve). So the mechanic is partially correct, it does make the ...


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You want your vent venting to air as much as possible. If you are cooling/heating your walls/floors/ceiling this is much more inefficient than doing the same to the room. Think about it this way... Let's say 25% of the heat is absorbed by the wall. Do you think the wall will heat up the room to reflect that 25%? Maybe reflecting 1/5 of that if that. ...


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What a great question. I love questions that hit the sweet spot between a textbook, and the real world. Textbook Physics says that you save energy by pointing the vent to blow to the room. Real world physics says that blowing toward you better when the A/C is on, and to the wall when heating. Personal preference is, of course, a personal decision. In ...


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A light fabric shade on the terrace will cool terrace considerable and also help to make a shade for small parties. This is the cheapest and the best which I am planning to install on my terrace.


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I'm in Michigan and we get harsh winters and salt our roads. Salty roads and ice get on our cars, and this combination is really harsh on our metal parts of our cars. Salty humidity is also very harsh on any metal parts, even galvanized steel. Now galvanized steel in the US has improved in the past 20 years, but it is not impervious to salt water. That ...


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Something that meets or slightly exceeds the 35 in-lb rating, and matches the 24V spec (though you could check if your system is using AC or DC, and just get one to match your system rather than an AC/DC version.) I suppose the time should fall in the general range of this one's 80-110 seconds as well, so vents are not slamming open and closed, but I ...



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