BTU Sensar (AC & Heing)
Weka kiyoyozi cha hewa au kipasha - joto katika BHU kutoka mahali pa chumba, tabia ya nchi, jua na ndani yake.
Matokeo yanakuwa bora zaidi unapochapa.
Kuhusu kifaa hiki cha kupigia hesabu
A BTU (British Thermal Unit) is a unit of heat, and air conditioners and heaters are rated by how many BTU per hour they can move. This calculator estimates the capacity a room actually needs so you neither undersize the unit (which then runs flat out and never keeps up) nor oversize it (which short-cycles, wastes energy and leaves the room clammy). For cooling it starts from the U.S. EPA rule of thumb of about 20 BTU/h per square foot, then adjusts for ceiling height, sun exposure, occupancy and heat-producing rooms. For heating it scales the floor area by a BTU-per-square-foot factor that rises with a colder climate.
The cooling adjustments are: scale by ceiling height relative to the standard 8 ft; subtract about 10% for a heavily shaded room or add 10% for a very sunny one; add roughly 600 BTU for each occupant beyond the first two; and add about 4,000 BTU for a kitchen, where appliances throw off heat. As a worked example, a 300 sq ft moderate-climate living room with standard ceilings, average sun and two people needs about 300 × 20 = 6,000 BTU/h — a typical window-unit size. Heating that same room in a cold climate uses a factor near 60 BTU/sq ft, or roughly 18,000 BTU/h.
The result is also converted to tons and kilowatts and rounded up to a sensible unit size, using 1 ton of cooling = 12,000 BTU/h and 1 kW ≈ 3,412 BTU/h. So a 6,000 BTU need is about half a ton or 1.76 kW. These are planning estimates: a proper HVAC load calculation (Manual J) also weighs insulation, window quality, air leakage and local climate data, so treat the number as a well-informed starting point for shopping.
Maswali yaliyoulizwa mara nyingi
Ninahitaji kiasi gani cha BTU kwa kila meta ya mraba?
Kwa kuwa chumba cha meta 20 hivi kwa saa moja hivi kinaanzia, chumba cha meta 300 hivi kinahitaji karibu miaka 6,000 ya BHU. Heeding anahitaji zaidi KULEA kuanzia karibu meta 25 za BTU/sq katika hali ya hewa yenye joto kali hadi 60 katika baridi.
Jua, watu na jikoni hubadilije idadi?
Chumba chenye jua kali sana huongeza karibu asilimia 10 na kivuli huondoa asilimia 10. Kila kinesho cha maji kinachopita viwili huongeza karibu dola 600 za BHU, na jiko laongeza karibu 4,000 BHU kwa sababu vifaa vya umeme hutoa joto.
BHU hubadilikaje kuwa tani au kilowati?
Tita moja ya vitu vinavyoweza kustahimili hewa ni sawa na 12,000 BHU kwa saa, na kilowatt 1 ni zipatazo 3,412 BHU/h. Kwa hiyo kipimo cha 12,000 cha BHU ni tani 1 au karibu 3.5 cha baridi.
Je, urefu wa dari unabadili ule BTU ninaohitaji?
Kadirio hilo linakadiriwa kuwa la kimo cha meta 8, kwa hiyo dari la meta 10 huinua takwa hilo kwa asilimia 25 hivi kwa sababu kuna kiasi kikubwa zaidi cha hewa katika hali.
Je, ni vibaya kununua kifaa cha kufanyia maamuzi?
Kisehemu cha hewa kilichofunikwa hupoa hewa lakini huzima kabla ya kuondoa unyevu wa kutosha, ikiacha chumba kikiwa baridi na chenye joto na kupoteza nishati kupitia vipitisha - umeme vidogo. Ndiyo sababu kifaa hiki kina ukubwa wa mzigo badala ya kuchukua tu sehemu kubwa zaidi.
Je, unahitaji kufanya kazi nyingi zaidi ya kujipodoa ili upate nafasi hiyo?
Kwa kawaida, na hutegemea sana hali ya hewa. Upoa huanza karibu na BAU (mishi) 20 & eeq, huku joto likiongezeka kutoka karibu meta 25 BHU/sq katika hali ya joto hadi 60 katika baridi kali ili chumba cha baridi kiweze kuhitaji mara kadhaa uwezo wa kupasha joto.
Je, ninaweza kuingia katika chumba cha baraza katika meta za mraba?
Yes. Switch the area units to square metres and the calculator converts internally (1 m² ≈ 10.76 sq ft) before applying the BTU-per-square-foot rules, so you can work in whichever unit your floor plan uses.
API bustanini hutumia kifaa hiki cha hesabu kutoka kwenye mfumo wa sheria
Ipigie simu kifaa hiki cha kupigia hesabu kama Junse É not doot toder. Chochote unachoacha kinatumia kiwango kilekile cha mwisho ambacho ukurasa huu haujakamilika; parameta isiyojulikana ni 400, si sufuri kimya kamwe. Soma habari kamili za API docs →
keyboard label
GET https://calculator.free/api/v1/btu/curl
curl "https://calculator.free/api/v1/btu/?mode=cooling&units=sqft&area=300&climate=moderate"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/btu/?" + new URLSearchParams({
"mode": "cooling",
"units": "sqft",
"area": "300",
"climate": "moderate"
}));
const data = await r.json();
console.log(data.results);Matokeo ni makadirio ya mwongozo wa ujumla, si wa kifedha, wa kitiba au wa kodi tu.