We have in science knowledge neither a. G. U. T. nor a G.U.P. !
And what helps us to know about low-/no energy need devices for our daily needs if we can not financial afford these. ?!
Sometimes academical advices are also far from reality :
http://www.rexresearch.com/cuinanoagwire/cuinanoag.html" ........eliminate need for indoor heating."
Only 12 W for body ambient conditioning,a success related to Daimler-Benz 90' R&D e-wear invention with 80 Welectric consume ! But I decide mainly for outdoor use. !
Argumentation : living at the sea-side,coast/beach 500 meters away the inhouse humidity/condensation needs to be diminished and this is with "12 W" body AC not possible,illness and textiles/mobiliar damage risk. !
Heat comparison : hot water electric 1500 W kettle and 1 liter water heated in 5 minutes and this hot water in an hot water gum bottle as body/bed warmer ~ 125 Wh hot water/4-5 hours "warming effect"~ 25 W/h
Condensation temperature : % humidity dependent 10-15 °Celsius inhouse caloric temperature. !
Condensation and as effect/consequence mold is today one of the greatest problems in modern " pseudo-evacuated" modern construction buildings.( blower door teste !)
For old houses I would recommend these electric candle heater with dehumifier effect concept :
https://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=0&ND=3&adjacent=true&locale=en_EP&FT=D&date=19881019&CC=GB&NR=2203529A&KC=A#The british inventor wrote about 2 x 200 W devices for (his ?) semi-detached house and 0°C to 14,5°C ambient temperature condition for beside heating also dehumidifying.as solution !
[14,5°C was/is in much private households in winter/cold weather time average reality world-wide. !
German CIVIL COURTS DECISION: too less, minimum 20°Celsius in average in-house caloric temperature
Who buys with credit his home is by law not home owner; legal term definition : Owner/Eigentuemer( credit-free) and credit-holder/User/Besitzer ;
can the credit giver= by law home owner - demand the home user to heat up to these minimum 20°C average temperature ? YES ,HE CAN ! Credit object damage risc and worth lost risc ! ]
And 25W for the "small bedroom"
Undefined : sqm/sqft living area
Because several billions Earth habitants are living in deep-max 0°C climate areas this can be helpfull. !
As possible improvement the heat bulb heater/dehumidifyer seriell connection. :
https://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=0&ND=3&adjacent=true&locale=en_EP&FT=D&date=20041118&CC=WO&NR=2004100349A1&KC=A1#2x200 W and 14,5°C are in personal absence ( work-time/holiday cabin et cet.) "physiological-physical ( but not legal if not home owner) sufficient,
for higher room temperature 3x/4x/? 200 W ( up to 2000 W units as by the inventor descripted) for average 16°/18°/20°also configureable. !
Attention : not linear calculation possible, condensation ( % humidity) enthalpy gains relationship !
Light/heat bulbs by same given nominal Wattage works with different radiation effect !
Also here since the 80' some technical improvements. !
Also with coatings on the lamp holder surface the results are improveable !
Science = knowledge each one is in his life his scientist
Such an offer probably in the next years industrial and later commercial available. :
https://patentauction.com/patent.php?nb=11462Actually ,by technical similar concept prototype,I estimate the 1 KW AC-amplifyer costs with 250 EUROs in seriell/mass production ( without over-head costs) for many people a technical solution for their ecologic energy use,but by their purse content : financial not affordable the buy, only possible as " device rent/lease"
4x 200W e-candle heater/dehumidifyer and the amplifyer effect for such a semi-detached house
~ 80 W-net electric input for warm and relative dry inhouse
Which was the Daimler-Benz body ac e-wear Wattage in the 90'. ?
Each one has to find his own right solution !
Perfect ,by german academical theory, constructed 10 W/sqm "PASSIVHOUSE"-buildings have in real use 20 W/sqm consume ( Fraunhofer Institute study ), G.U.T./G.U.P. : + 100%
The cheapest solution which me is known of electricity delivery= hydro-electric device , by costs calculation from material and industrial transformation to ready to use product and later physical and financial R.O.I.,is :
https://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=5&ND=3&adjacent=true&locale=en_EP&FT=D&date=19280203&CC=FR&NR=633752A&KC=A#= multi-waterbattery-set
Future 112 sqm private4 habitants household energy consume
1000 KWh electricity per year ~ 2,74 KWh per day means
274 Wh per day magnet amplifyer input need per day
1 MEREDIEU WATERBATTERY electricity delivery per day 12V x 1,5 Ah x 24 h = 432 Wh
But: per battery only 18 Wp per hour
1000 Wp consume after magnet amplyfier 100 Wp x AC-AC magnet amplyfier Wattinrushpeak :
55 MEREDIEU WATERBATTERIES a 18 Wp DC~ 1000 W. to DC-AC inverter ( inverter Wattinrushpeak ?)
to AC-AC magnet amplifier
Or WATERBATTERY loads conventional battery( with the higher - accumulated- Wp)
After each 30 hours full battery load : water as fuel re-fill
or more WATERBATTERIES f.e. 7 days= 7 WATERBATTERIESand 1 time per week refill
Now :
DC or AC ( inverter) micro-grid and the Wattpeak and Wattinrushpeak knowing if all needed electric devices in parallel or seriell-micro grid conection are in action/function !