BTU Calculator (AC & Heating)
Nhazi aịkọnọ̀lụ̀ mọọbụ n'ime BTU site na ebe ebe, ihu igwe, anyanwụ nakwa ebe obibi.
Nhọrọ ndị ahụ ga-akpụzi mgbe ị na-etipụta.
N'ihe banyere calculator a
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.
Ajụjụ ndị a na-ajụkarị
Olee BTU m ga-achọ n'otu square foot?
Maka cooling, banyere 20 BTU kwa awa kwa square foot bụ standard na-amalite point, ya mere a 300 sq ft ụlọ chọrọ ihe dị ka 6,000 BTU. Heating chọrọ karịa - site na banyere 25 BTU / sq ft na a okpomọkụ climate ruo 60 na a chill otu.
Olee otú anyanwụ, mmadụ na ụlọọrụ na-agbanwe ọnụọgụgụ?
A sunny room na-agbakwunye banyere 10% na a shaded otu na-ewepụ 10%. Onye ọ bụla n'ime ndị bi n'ebe ahụ n'ebe abụọ na-agbakwunye na 600 BTU, na kitchen na-agbakwunye banyere 4,000 BTU n'ihi na ngwaọrụ na-enye ọkụ.
Olee otú BTU ga-atụgharị n'ime ton mọọbụ kilowatts?
Otu ton nke air-conditioning dị ka 12,000 BTU n'otu elekere, na 1 kilowatt bụ banyere 3,412 BTU / h. Ya mere, 12,000 BTU unit bụ 1 ton ma ọ bụ ihe dị ka 3.5 kW nke cooling.
Ọ bụrụ na elu nke elu ahụ gbanwee BTU m chọrọ?
Ee. Nhazi ahụ ejirila n'ihe nlereanya 8 ft ceiling, yabụ 10 ft ceiling na-ebuli mkpa ahụ site na 25% n'ihi na e nwere ụda ikuku nke ukwuu iji rụzigharịa. Hazie elu nke ceiling na nhọrọ ndị dị elu iji kọwaa ya.
Ọ dị mma ịzụta AC unit nke nwere nnukwu nha?
Ee. Ozu nke nwere oke obosara na-echekwa ikuku n'ụzọ ngwa ngwa ma gbanwee n'ihu ka ọ wepụ n'ime ya n'ime ya, na-ahapụ ebe ahụ na-ekpo ọkụ nakwa na-echekwa ike site n'ụdị n'ime. Ya mere, ihe a na-eme bụ na otu a na-echekwa ihe n'ime ya n'ihi na ọ bụghị naanị ịhọrọ ozu nke kasị ukwuu.
Ọ bụrụ na ọbụna ịkụ ọkụ chọrọ BTU karịa ịkụ ọkụ maka ebe ahụ?
N'ozuzu, na ọ na-adabere n'ụzọ dị ukwuu na ọnọdụ okpomọkụ. Cooling na-amalite n'ebe 20 BTU / sq ft, ebe okpomọkụ na-aga site na 25 BTU / sq ft n'ime ọnọdụ okpomọkụ na 60 n'ime okpomọkụ - ya mere, ebe okpomọkụ-n'oge okpomọkụ nwere ike ịchọrọ oge ụfọdụ nke ike okpomọkụ.
M ga-abanye ebe ebe ahụ n'ime mita square?
Ee. Kpụga mpaghara ebe yunit na square mita na kalkulata ahụ na-agbanwe n'ime (1 m² ≈ 10.76 sq ft) tupu'ịwụnye BTU-per-square-foot iwu, ka ị nwee ike iarụ ọrụ na yunit ọbụla nke floorplan gị na-eji.
API — jiri kaadị a site na kóòdù
Kpọọ kalkulata a dịka ebe ngwụcha JSON n'efu - enweghị kii achọrọ. Ziga valiu ebe ahụ n'okpuru dịka paramita ajụjụ mọọbụ JSON. Ihe ọbụla ị na-ewepụ na-eji dìfọ́ọ̀ltụ̀ nke a na-edebe ihuakwụkwọ a na ya; parameter a na-amaghị bụ 400, ọ dịghị sẽọ̀rọ̀. Gụọ ngwe ndị ahụ niile →
Ebemkpofuozi
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);Ihe a na-ahụta bụ n'ihi nlekọta n'ozuzu ya, ọ bụghị nlekọta ego, ọgwụ ma ọ bụ nlekọta ego.