BTU Kalkülatory (AC & Heating)
Bir howa sowadyjyny ýa-da sowadyjyny BTU'da otagyň meýdançasy, howa, güneş we ulanyşa görä ululykla
Netijeler ýazýan wagtyň täzelener.
Bu hasapçy hakda
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.
Köp soralýan soraglar
Bir kare aýa näçe BTU gerek?
Sowuklamak üçin, 20 BTU/sagat her kareli aýa standart başlanmak nökeri, şuňa görä 300 kareli aýa bir otagyň 6000 BTU gerek. Isletmek üçin has köp gerek - gyzgyn klimatda 25 BTU/sagatdan sowuk klimatda 60 BTU/sagat.
Gün, adamlar we aşhanalar nädip sany üýtgedýärler?
Çok güneşli bir otagda 10% goşmak we kölgeli bir 10% aýyrmak. Ikiden köp adam her biri 600 BTU goşmak, we aşhanada 4000 BTU goşmak sebäbi enjamlar gyzgynlygy çykarýar.
BTU-ny nädip tonna ýa-da kilowatta öwürmek gerek?
Bir tonna howany sowadyjy 12,000 BTU sagatda deňdir we 1 kilowat 3,412 BTU/sagatda deňdir. Şonuň üçin 12,000 BTU birligi 1 tonna ýa-da takmynan 3.5 kW sowadyjydyr.
Taňryň beýikligi meniň gerek bolan BTU'ny üýtgedýämi?
Eý. Bu hasaplama standart 8 ft gapy bilen ölçelipdir, şonuň üçin 10 ft gapy talaplary 25% çemesi ýokarlandyrýar sebäbi bu ýerde has köp howa bolumy bar. Buny göz öňünde tutmak üçin ileri opsiýalarda gapy beýikligini belle.
Öňkiden uly AC birligini satyn almak erbetmi?
Eý. Üstün ululykly birikme howany çalt sowadýar emma ýeterlik çyglygy aýyrmanka ýapylýar, otagy sowuk we çygly galdyryp we az-çagaly çalşyryş arkaly energiýany sarp edip. Bu sebäbi bu esbap iň uly birikme saýlamakdan has köp ýük üçin ululyklaýar.
Ýokary temperaturaly sowadyjyň sowadyjydan has köp BTU'a mätäçmi?
Normally, we bu klimata gaty bagly. Sowuklama 20 BTU/sq ft golaý başlar, gyzdyrma bolsa gyzgyn klimatda 25 BTU/sq ft golaýdan sowuk birinde 60 golaý aralaşýar - şuňa görä sowuk klimatly otagyň birnäçe gezek gyzdyrma mümkinçiligine mätäç bolup biler.
Men otagyň meýdanyny kare metre girip bilermi?
Eý. meýdança birlikleri kare metre öwür we hasapçy BTU-per-square-foot düzgünleri ulanmakdan öň içinde (1 m² ≈ 10.76 sq ft) öwürer, sebäbi siziň planyňyzda ulanan her bir birlikde işlep bilersiňiz.
API — bu hasapçyny koddan ullan
Bu hasapçyny boş JSON ahtar noktasy hökmünde çagyr - açar gerek däl. Aşakdaky meýdança mykdarlaryny soragyň parametrleri ýa-da JSON hökmünde iber. Siziň goýmaýan hernäňiz şu sahypanyň öň bellenen öň bellenenini ulanýar; namydar parametr 400, hiç wagt sessiz sıfır däl. Eňlisçe senedleri oka →
Endpoint
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);Netijeler diňe umumy ýardam üçin hasaplanypdyr, maliýe, saglyk ýa-da salgyt maslahaty üçin däl.