Not when you talk heat pump. If the outdoors is 60 degrees F and you want 68 degree indoor, you can probably multiply your heating ability by a factor of 10 with a heat pump. Many residential heat pumps can give you 6X the heat energy they consume via electricity.
All depends on the differential temperature and the design of the unit. Unless the outdoor temp is down at the vaporization temperature of the refrigerant, you will always multiply your heating energy. From: Jan-GAMs Sent: Thursday, January 20, 2022 7:48 AM To: [email protected] Subject: Re: [AFMUG] OT: Major off topic. Off grid home power is power, TANSTAFL (Heinlein). Maybe the OP is confusing his formulae? 1 BTU/hr is not the same amount of power as 1 BTU/min. (minutes vs hours) On 1/20/22 06:30, Josh Luthman wrote: Watts != btu. You're thinking in terms of resistance heating. A mini-split is FAR more efficient in a particular range. The ones I've gotten in the last 4 years are incredibly efficient at ~40-80 degrees. They're still decent at -8 through 40. Not too good when colder than -8, but it'll still heat. On Thu, Jan 20, 2022 at 9:25 AM Jan-GAMs <[email protected]> wrote: somethings off, 6k btu should consume 1758.42642 watts. Your mini-splits invent a new type of btu? On 1/20/22 06:11, Robert wrote: The $800 mini-splits I am looking at put out about 6K BTU's of heat on 400 Watts. The home depot $300 heaters put out 5K BTU's but require 1500 watts.. Not going to do well in the winter overnight off grid... And no a/c in the summer... On 1/20/22 5:53 AM, Jan-GAMs wrote: $1895? For a one room ac/heater? Home Depot has something similar for $300. Is it the decal? Hood ornament? On 1/19/22 05:13, Zach Underwood wrote: If you have not already gotten the mini splits take a look at https://www.hotspotenergy.com/solar-air-conditioner/ It has direct PV inputs when sunny it would put no load on your inverter IT can be put in solar only mode where it will scale the cool/heat output to match the power it is getting PV It can run overnight if you wish by giving in 240volt AC connection. On Tue, Jan 18, 2022 at 7:08 PM Robert <[email protected]> wrote: I am working on my first off grid home, and hope to do another in the future somewhere more northerly.. This one is in the sunbelt of N. Nevada and currently I have 4K of solar feeding a 30KW LFP battery bank through currently a Victron charge controller and a couple midnight solar inverters to generate a flawed 220 as well as two sides of 110. ( the 220 will not run the well controller even though supposedly configured for such. ) I am upgrading the inverters and controller to a https://www.signaturesolar.com/products/8kw-48v-240vac-split-phase-120a-250vdc-off-grid-inverter-by-growatt planning on doing a couple 9K mini-splits for heating/cooling. I wonder if this group has some gotchas that I might learn from in advance before I buy myself into a corner... I'm all ears.. thanks!! -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Zach Underwood (RHCE,RHCSA,RHCT,UACA) My website advance-networking.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -------------------------------------------------------------------------------- -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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