Air Conditioner Performance In Extreme Heat

first_imgDuring the last week of June, many major U.S. news outlets sent reporters to Arizona to issue updates on the area’s extreme heat wave. Outdoor temperatures hit 119°F in Phoenix. Some airplanes were grounded because the hot air was too thin for small jets to take off. Car steering wheels were so hot that some drivers wore oven mitts. Vinyl records delivered by mail arrived warped. Emergency room physicians reported an increase in burn cases: hands were burned when people touched their cars, and children’s feet were burned when they went barefoot outdoors.The reports from Arizona conjured apocalyptic images of a science-fiction future — one in which rising outdoor temperatures make it difficult for humans to leave the safety of an air-conditioned building.The question arises: Can typical split-system air conditioners handle these conditions? Or will extended heat waves require air conditioner manufacturers to design new types of equipment? The compressors will still work To get answers to my questions, I turned to John Proctor, the president of Proctor Engineering Group in San Rafael, California. Proctor is a professional engineer and a nationally recognized expert in residential air conditioning systems.The short answer to my question is that the outdoor units (the condensers) of split-system air conditioners should have no problems handling a heat wave in Arizona. If homeowners feel hot during a heat wave, the problem is rarely due to a condenser or compressor that can’t handle high outdoor temperatures. Instead, problems typically arise from installation problems (for example, restricted air flow to the outdoor unit or poorly designed duct systems).“If you have an old compressor that is unhappy — one that is getting ready to go out — what happens is that at high temperatures, the head pressure… Start Free Trial Already a member? Log in Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and construction details.center_img This article is only available to GBA Prime Memberslast_img read more

BEN KEITHS BLOG Poor Angela

first_imgOh, Blog, poor Angela Merkel! How have my German brethren not given her another full crack of the whip?! Where EXACTLY can she have been seen to have let her people down, when she’s gone to the front, and absolutely run away from the lot of the weak pack, over the last ten years? And look who she’s got to ‘share’ power with; the drippingly wet sounding ‘Social Democrats’. Europe’s finest leader, and ‘sharing power’ with some lefties, really doesn’t sound as if it’s going to work, does it, Blog? Angela, what were you thinking, though? You should have ‘Putinised’ the whole event and booted all of these characters, and democracy nonsense, out of the way years ago!!In other news:I went to my beloved ‘Marroccos’ on Hove sea-front, for dinner this evening, with Belindabelle. I’ve been going there, and enjoying their homemade Italian ice-cream and pizza, since I was a young boy and some sad news has reached me. There always used to be a lovely old man, who I called Mr Marrocco (I dunno, his name was probably Jim Smith), who walked around the place telling everyone how long he’d owned the restaurant and how he made his ice-cream. He was part of the furniture and had time for everyone. I bumped into his son Peter tonight and asked where his dad was. He said, very down-heartedly, that he had been taken into an old peoples home, and fallen into a state of Dementia and Alzheimer’s. This really is sad news and my heart goes out to Peter and his family. Time waits for no man, and nor for that matter, do Marroccos’ Hawaiana pizzas or chocolate ice-creams, so do yourself a favour and get down there asap. Now minus Mr Marrocco, but still top class.Over and out, Ben xlast_img read more