an example; You have 10 m3/s airflow rate, 1000 Pa total fan pressure and a fan static +motor efficiency of 0.72 then you have (10 x1000)/ (0.72 x 1000) = 13.89 kW.
How is Ahu load calculated?
To calculate the estimated HVAC load for a house with 2,500 square feet, 12 windows, and 3 exterior doors occupied by 4 people, simply plug it into this formula: 2,500 x 25 = 62,500 base BTU. 4 people x 400 = 1,600. 12 windows x 1,000 = 12,000.
How do you calculate the full load of a DC motor?
Full load current I, I =P. / 1.732 * V Amps.
How do you calculate kW cooling capacity?
Using the energy equation of Q = ṁ x Cp x ΔT we can calculate the cooling capacity. We add 273.15K to the celcius to convert it to units of Kelvin. The Specific heat capacity (Cp) is measured in units of kJ per kg per Kelvin. This gives us a final answer of Q = 2,500kW of cooling.
How many kW is a BTU?
Kilowatts to BTU/hr conversion table
| Power (kW) | Power (BTU/hr) |
|---|---|
| 1 kW | 3412.142 BTU/hr |
| 10 kW | 34121.420 BTU/hr |
| 100 kW | 341214.200 BTU/hr |
| 1000 kW | 3412142.000 BTU/hr |
How do you calculate kW heat load?
Heat load (and heat gain) can also be expressed in kilowatts (kW).
- To convert BTU to kW, 1 BTU = 0.00029307107 kW.
- So, from the example above, 10,460 BTU = 3.065 kW.
How do you calculate load?
Calculating Load
- Add together the wattage capacity of all general lighting branch circuits.
- Add in the wattage rating of all plug-in outlet circuits.
- Add in the wattage rating of all permanent appliances (ranges, dryers, water heaters, etc.)
- Subtract 10,000.
- Multiply this number by .
- Add 10,000.
How do you calculate kW electrical load?
We find the power in kilowatts P(kW) by dividing the power in watts P(W) by 1,000. Here’s the Formula for Converting Watts Into Kilowatts: P(kW) = P(W) / 1,000.
What is cooling capacity in kW?
The cooling capacity of 1 ton is equal to 3.517 kilowatts of power. For 1.5 ton AC, the power consumption is the same as the cooling capacity. There was a value of 1.5* 3.517/2.954 kilowatts. The outdoor unit is called the Compressor while the indoor unit is called the Evaporator.
How do you calculate DCDC amps to kilowatts?
DC amps to kilowatts calculation. The power P in kilowatts (kW) is equal to the current I in amps (A), times the voltage V in volts (V) divided by 1000:
How do you calculate AC single phase amps to kilowatts?
AC single phase amps to kilowatts calculation. The power P in kilowatts (kW) is equal to the power factor PF times the phase current I in amps (A), times the RMS voltage V in volts (V) divided by 1000: P (kW) = PF × I (A) × V (V) / 1000.
What is the total cooling capacity of Ahu?
Total Cooling Capacity for AHU is Sensible Load + Latent Load. (33 C DB/ 26.1 C WB), h1 = 81 kJ/kg. Based on Supply Air Temp 16C ,Coil ADP & Entering Point. h2= 44 kJ/kg. Δh = 37 kJ/kg.
What is the flow rate for a 10 tr Ahu?
Typical AHU requires a flow rate of 2.4 gallons/ton. So, the flow rate should be 24 gpm for the AHU capacity of 10 TR. A typical AHU will have a Δt of 10° F, hence we assumed the AHU coil outlet temperature as 54° F. for formulae and derivations.
