Menu Close

How do you calculate the Ahu cooling capacity?

Admin

How do you calculate the Ahu 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 is tr in Ahu calculated?

One short ton = 2000 lb, Heat extracted = 2000 x 144/24 hr = 288000 Btu/24 hr = 12000 Btu/hr = 200 Btu/min, 1 ton refrigeration = 200 Btu/min = 3.517 kJ/s = 3.517 kW = 4.713 HP .

How is cooling CFM calculated?

How to Calculate the CFM of a Room

  1. Measure the room’s width and length.
  2. Multiply the three measurements from step 1 to determine the cubic footage of the room.
  3. Multiply the cubic volume of the room by the number of times you want the air to turn over or exchange in an hour.

How do you calculate sensible cooling?

We also learned that the sensible cooling load (hs) is calculated by multiplying the specific heat of air (cp) by the density of air (rho) by the air flow (q) and the temperature differential. SHR is calculated by dividing sensible cooling load by the total cooling load.

How do you calculate cooling cost?

The answer is your annual cost of cooling. For example, if the BTUs of your unit are 36,000, the SEER number is 10.5, your cooling load hours are 600, and your electric rate is . 092, your process would be 36,000 divided by 10.5, or 3,428.57. Multiply 3,428.57 by 600 to equal 2,057,142.80.

How do you calculate TR on a cooling tower?

Multiply 500 times the water flow rate, times the temperature difference, divided by 12,000 or 500 x q x dt/12,000. The result is the tons of capacity of the cooling tower.

How do you calculate TR?

How to calculate total revenue

  1. total revenue = (average price per units sold) x (number of units sold)
  2. total revenue = (average price per services sold) x (number of services sold)
  3. total revenue = (total number of goods sold) x (average price per good sold)
  4. total revenue = (40,000) x ($5)
  5. total revenue = $200,000.

How do I calculate air compressor CFM?

How Do You Calculate CFM for an Air Compressor?

  1. Next, convert to standard pressure (ATM).
  2. Tank Pump-up Time = 1 min 8.4 seconds (1.14 minutes)
  3. The three primary factors are:
  4. CFM = Tank Volume in Cubic Feet x Standard Pressure (ATM) During a Cycle x Cranks per Minute.

How do you calculate ventilation rate?

Ventilation rate is expressed as the volume of gas entering or leaving the lungs in a given amount of time. It can be calculated by multiplying the volume of gas, either inhaled or exhaled, during a breath (the tidal volume) by the breathing rate [e.g., 0.4 liter (or 0.4L) × 15 breaths/min = 6L/min].

How is the cooling capacity of an air conditioner measured?

Refrigeration or cooling capacity can be measured in tons. A water-chiller refrigeration ton is defined as: A ton is the amount of heat removed by an air conditioning system that would melt 1 ton (2000 lbs.) of ice in 24 hours. The heat required to melt 1 lb of ice at 32 oF to water is 144 Btu.

What are the functions of an air handling unit?

An air handling unit often abbreviated as AHU, is a factory fabricated assembly consisting of fan, heating and/or cooling coils, filters, dampers and other necessary equipment to perform one or more of the following functions of circulating, cleaning, heating, cooling, humidifying, dehumidifying, and mixing of air.

Which is the correct equation for cooling and heating?

Latent and sensible cooling and heating equations – imperial units. Sponsored Links. The sensible heat in a heating or cooling process of air (heating or cooling capacity) can be calculated in SI-units as. hs = cp ρ q dt (1) where. hs = sensible heat (kW) cp = specific heat of air (1.006 kJ/kg oC) ρ = density of air (1.202 kg/m3)

How to calculate the cooling load of water?

Water flows with 1 gal/min and 10 oF temperature difference. The ton of cooling load can be calculated as: h = 500 (1 US gal/min) (10 oF) = 5000 Btu/h. = (5000 Btu/h) / (12000 Btu/ton) = 0.42 ton. Converting between heat and energy units.