Path: ...!news.misty.com!weretis.net!feeder9.news.weretis.net!news.quux.org!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Phil Hobbs Newsgroups: sci.electronics.design Subject: Re: Product idea Date: Tue, 18 Feb 2025 00:24:57 -0000 (UTC) Organization: A noiseless patient Spider Lines: 76 Message-ID: References: <67ab9473$15$1783$882e4bbb@reader.netnews.com> <1r7mzay.imogtcf38eroN%liz@poppyrecords.invalid.invalid> <0fov7lxdde.ln2@Telcontar.valinor> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Tue, 18 Feb 2025 01:24:58 +0100 (CET) Injection-Info: dont-email.me; posting-host="252e13761543c64cc94db24dd2a1c399"; logging-data="1462356"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/OSdin1DLZ2Mmy5CcqmmUv" User-Agent: NewsTap/5.5 (iPhone/iPod Touch) Cancel-Lock: sha1:Fp//5jvan1x/E4qC8ZyiRK3LqRM= sha1:loImlV5EdU1GPgnPO6tqqYONq4o= Bytes: 4621 Carlos E.R. wrote: > On 2025-02-13 03:00, Phil Hobbs wrote: >> Carlos E.R. wrote: >>> On 2025-02-12 10:51, Liz Tuddenham wrote: >>>> Carlos E.R. wrote: >>>> >>>>> On 2025-02-12 01:48, john larkin wrote: >>>>>> On Wed, 12 Feb 2025 00:57:33 +0100, "Carlos E.R." >>>>>> wrote: >>>>>> >>>>>>> On 2025-02-11 22:49, Don Y wrote: >>>>>>>> On 2/11/2025 2:00 PM, bp@www.zefox.net wrote: >>>>>>>>> Don Y wrote: >>>>>>>>>> On 2/11/2025 11:19 AM, bitrex wrote: >>>>>>>>>>> A lot of people in e.g. mobile homes in New England and (other areas >>>>>>>>>>> of the US >>>>>>>>>>> it gets cold in the winter) are stuck with baseboard electric heat; >>>>>>>>>>> since the >>>>>>>>>>> new administration is so big into crypto it should be decreed that >>>>>>>>>>> all electric >>>>>>>>>>> space heaters sold in the US should mine crypto, and for the >>>>>>>>>>> baseboards you >>>>>>>>>>> could also have the baseboard form factor crypto miner. >>>>>>>>>> >>>>>>>>>> And, the occupant gets to KEEP any coin that he mines! >>>>>>>>> >>>>>>>>> Which begs the question, will the earnings pay the electric bill? >>>>>>>> >>>>>>>> I think bitrex's point was that the person NEEDING heat has >>>>>>>> already decided to spend the money on the electricity required. >>>>>>>> The realization that the heat could be generated while "doing >>>>>>>> useful work" is insightful. >>>>>>>> >>>>>>>> [I believe electric (resistance) heat is among the least? cost effective] >>>>>>> >>>>>>> A heat pump is the most productive, of the electrical heat sources. >>>>>>> Mining crypto, dunno. >>>>>> >>>>>> Couldn't you burn gas, boil water, spin a generator to make >>>>>> electricity, and heat your house with the condensate heat? >>>>>> >>>>>> That would make free electricity. >>>>> >>>>> Certainly, and it has a name. Combined cycle, or something similar. It >>>>> is a simple as running a diesel generator and heating the house with it >>>>> radiator, and a heat exchanger on the exhaust. >>>> >>>> What is the design life and replacement cost? Writing off the >>>> investment over a few years could work out more expensive than the >>>> electricity it saved. >>> >>> You have to ask somebody else about that. :-) >>> >>> I read, maybe decades ago, that it was in fashion for businesses in >>> Britain to do this, and they surely dir make the numbers. >>> >>> The calculation was done for the heating of the building. The >>> electricity was extra gains. >>> >> >> Of course when the engine drops a valve on a New Year’s Day with 20 degrees >> of frost, you can’t get it fixed before all your pipes freeze and flood the >> house. > > Then use air ducts, as the Canadians :-) I’m Canadian myself, but I never got the knack for washing and cooking with air alone. I’d probably be thinner if I had. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics