Kalkulator BTU (AC & Panas)
Ing jaman biyèn, bumi iku dipérang dadi telung pérangan, ya iku bumi, langit, lan banyu.
Hasil dioptimalake nalika sampeyan ngetik.
Ngendi kalkulator iki
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.
Takon kang asring diajukake
Apa ana sing bisa gawé gawéan kang luwih apik saka iku?
Kanggo pendinginan, kira-kira 20 BTU saben jam saben kaki persegi iku titik wiwitan standar, mula kamar 300 sq ft mbutuhake kira-kira 6,000 BTU. pemanasan mbutuhake luwih - saka kira-kira 25 BTU / sq ft ing iklim panas nganti 60 ing siji adhem.
Apa sing dadi sebabé, lan apa sing dadi akibaté?
Saben wong kang manggon ing omah iki bakal nambah 600 BTU, lan dapur bakal nambah 4000 BTU amarga piranti-piranti bakal ngasilaké panas.
Carané BTU dikonversi dadi ton utawa kilowatt?
1 ton air conditioning padha karo 12.000 BTU saben jam, lan 1 kilowatt kira-kira 3.412 BTU/h. mula 12.000 BTU unit iku 1 ton utawa kira-kira 3.5 kW pendingin.
Apa dhuwur plafon bakal ngganti BTU kang dakbutuhaké?
Ya. Perkiraan punika dipunskala kaliyan langit-langit standar 8 ft, dados langit-langit 10 ft nginggilaken persyaratan kaliyan 25% amargi wonten volume udara ingkang langkung kanggé kondisioner. Tetep dhuwur langit-langit ing pilihan maju kanggé ngitung punika.
Apa ora bisa digawé kanthi cara sing luwih gampang?
Ya. Unit kang luwih gedhé bakal nyedhot udara kanthi cepet nanging bakal disambungake sadurunge bisa mbusak kelembapan kang cukup, banjur ninggalaké kamar kang adhem lan lembab lan bakal ngasilaké energi kang akèh liwat short-cycle. Nanging, alat iki bakal ngukur ukurané miturut beban tinimbang mung milih unit sing paling gedhé.
Nanging, panas punika saged dipun-ginakaken kanggé ngresiki ruangan.
Umumipun, lan punika kadospundi kaliyan iklim. Pendinginan dipunwiwiti ing 20 BTU/ft2, nalika pemanasan wiwit ing 25 BTU/ft2 ing iklim ingkang panas dumugi 60 BTU/ft2 ing iklim ingkang adhem - saéngga kamar ingkang iklimipun adhem saged dipunbutuhaken kamampuan pemanasan ingkang langkung.
Apa kula saged ngetik wewengkon kamar ing mèter persegi?
Ya. Ganti unit wewengkon dadi mèter persegi lan kalkulator bakal ngowahi ing jeroné (1 m² ≈ 10.76 sq ft) sadurunge nglakokaké aturan BTU-per-square-foot, supaya bisa kerja ing unit apa wae sing digunakaké ing rencana lantaimu.
API — gunakake kalkulator iki saka kode
Panggenan kalkulator iki minangka titik pungkasan JSON gratis - ora ana kunci sing dibutuhaké. Kirimi nilai medan ing ngisor iki minangka parameter pitakonan utawa JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Waca dokumen API lengkap →
Titik pungkasan
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);Kajaba iku, ana uga sing ora bisa gawé gawéan, kaya ta dokter, insinyur, lan liya-liyané.