Joseph Nowarski - Energy Conservation Expert

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selection of room air conditioner

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enter or change any number, all the rest will be recalculated automatically

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region	Sea Shore     Inner Plain     Mountains     Desert     Valley
floor	middle     last     first
thermal insulation	without insulation     with insulation

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room floor area, m2 cooling capacity, W see notes to the right cooling capacity, BTU/hr see notes to the right energy rating of the air conditioner national standards are more demanding than in EU     A       B       C       D       E       F       G   Coefficient of Performance - COP for cooling electric power, W compressor size, HP this is not relevant to the AC selection tens of years ago, this was the way to determine the size of AC

Cooling load depends on many parameters and may vary between 100 to 300 W/m2. some parameters: apartment floor, under the roof, middle floor construction materials, kind of insulation, its thickness and position windows geometry and shading arrangements windows and shutters material ventilation (windows opening) habits room orientation solar radiation gain geographic region indoor heat sources and humidity sources neighboring rooms temperature

Enter your search terms Submit search form

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electricity consumption calculations

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working hours of air conditioner, hrs/year
%, thermostat ON/OFF (100=100% ON)
electricity tariffs, cent/kWh, including VAT
electricity consumption, kWh/y
electricity consumption, $/y

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ENERGY CONSERVATION

(c) nowarski@yahoo.com

created: 18 December 2005
updated: 15 May 2009

created by Joseph Nowarski - Energy Efficiency and Renewable Energy Expert