BTU/hr to watt BTU/hr to kW BTU/hr to tons hp to watt hp to kW kW to BHP kW to BTU/hr kW to hp kW to tons kW to watt mW to watt Tons to BTU/hr Tons to kW Watt to mW Watt to kW Watt to hp Watt to BTU/hr VA to watts VA to kW VA to kVA kVA to watts kVA to ...
Calculate heat transfer rate, Q. Q is measured in units of energy per unit time, such as BTU/hr or Watts. For a wall of uniform thickness d, with a thermal conductivity of k, an area of A, a hot temperature, Thot, and cold temperature, Tcold, solve Q with the following equation:...
Calculate heat transfer rate, Q. Q is measured in units of energy per unit time, such as BTU/hr or Watts. For a wall of uniform thickness d, with a thermal conductivity of k, an area of A, a hot temperature, Thot, and cold temperature, Tcold, solve Q with the following equation:...
Let’s say we have a big 1,000 sq ft room with standard 8 ft high ceiling. We want to calculate the CFM of a fan that will exchange all the air in such a room every 15 minutes (ACH = 4). We can use calculate fan CFM in two ways: ...
Calculate the system efficiency by the air conditioning efficiency formula EER = Btu/hr cooling/watts consumed. Substituting actual values, 480,000 Btu/hr/24.8 kW/hr = 480,000 Btu/hr/24,800 watts/hr = 19.35. This is very high cooling performance compared to the 2010 SEER standards of 13-...
An air conditioner's BTU (for British Thermal Unit) rating is a measure of its cooling power. An 8,000 BTU window unit, for instance, can typically cool a room of 300 to 350 square feet, according to the California Energy Commission.
Find the contribution by the lights in the room or space using the formula: Lighting BTU = total lighting watts x 4.25. Step 6 Calculate the Total Heat Load BTU using the formula: Total Heat Load BTU = Area BTU + Total Window BTU + Occupant BTU + Equipment BTU + Lighting BTU. ...
What is the heat in Joules required to raise the temperature of 25 grams of water from 0 degree C to 100 degree C? What is the heat in calories? Calculate the watts equivalent of 22 kilocalories consumed in 24 hours. If 200 cal of heat are added to a system, how much ene...
To calculate amp draw (A) from watts (W), we also need to know the voltage (V). To calculate amps, we use the basic electric power equation: P(in W)= I(in A)* V(in V) Basically, electric power P (wattage) is calculated by multiplying electric current I (amps) with voltage V...
Windows.If your data facility has windows, you must calculate how much heat is generated by sunlight from all windows. A general calculation is 60 Btu/hour/ft2of window. ASHRAE considers location, hours of sunlight, building materials, window materials, refraction rates and more in their calcula...