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How to size a heat pump, using heat loss calculations. скачать в хорошем качестве

How to size a heat pump, using heat loss calculations. 6 months ago

Which heat pump

how to choose a heat pump

What size of heat pump

Heat pump heat loss calculations

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How to size a heat pump, using heat loss calculations.

Wrong heat pump - poor performance. Heat Loss Calculations: How to perform basic heat loss calculations. The basics: 2 major sources of heat loss are calculated for a property Fabric loss – conduction of heat through the floor, walls, windows, doors and roof Ventilation loss measured in Air Changes per hour (ACH) Heat Loss Calculation: Fabric Loss Every external component has a U value which identifies the heat loss for every square meter for 1 deg C temperature difference There are a range of sources for obtaining the U values https://www.diydata.com/information/u... MCS U value table https://www.google.co.uk/url?sa=t&sou... U Value calculator Kingspan https://u-valuecalculator.com/gb/ Ventilation Loss The calculation is based on the number of air changes per hour ACH The equation is Qv = 0.33 × n × V × ΔT watts 0.33 is the specific heat of air in watts N is air changes / hour V is the volume cubic meters ΔT is the temperature difference on the design point day The ACH can be obtained by performing a pressure test on the house More commonly it is an estimate based on the age of your property Heat Loss tools: DIY spreadsheet On line tools – Trystan Lee https://trystanlea.org.uk/energyasses... Calculator https://openenergymonitor.org/heatlos... Heat Punk https://heatpunk.co.uk/ Measure current heat output from your gas boiler: This will allow you to understand how much heat energy your house currently requires. Download gas smart meter data for a cold day in cubic meters. Ideally a day that matches your design point. The Kwh of heat used from the following calculation. Heat output = C * 11.02* E C is cubic meters of gas 11.02 is the Kwh / cubic meter E is the gas boiler efficiency typically about 0.85 for a recent install.

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