How do you calculate TR for refrigeration?
Some commercial and industrial refrigeration systems are rated in Tons of Refrigeration (TR, tons). A ton is the amount of heat removed by an air conditioning system that would melt 1 ton (2000 lbs.)…Converting between Btu/h and Tons of Refrigeration.
| Btu/h | Refrigeration Ton | kW |
|---|---|---|
| 48000 | 4 | 14.1 |
| 54000 | 4 1/2 | 15.8 |
| 60000 | 5 | 17.6 |
How is tr capacity calculated?
Use the formula Q = M X C X ΔT where:
- Q = heat load in British Thermal Units per Hour (BTUH)
- M = flow in Gallons per Hour (GPM)
- C = specific heat of the fluid.
- ΔT = temperature difference in degrees Fahrenheit.
- Q = 500 BTU per gallon per hour X 40 GPM x 12 ΔT = 240,000 BTU per hour.
How do you calculate refrigeration 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.
What is TR capacity?
A ton of refrigeration (TR) is a unit of heat extraction capacity of the refrigeration or cooling equipment. Generally, TR is defined as the amount of heat transferred to freeze or melt 1 short ton of ice at 0 deg. C in 24 hours. 1 TR is approximately equal to 12000 BTU or 3024 Kcal/hr of energy/heat load.
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.
What is TR in chiller capacity?
A ton of refrigeration (TR or TOR), also called a refrigeration ton (RT), is a unit of power used in some countries (especially in North America) to describe the heat-extraction capacity of refrigeration and air conditioning equipment.
Is TR same as ton?
A refrigeration ton is approximately equivalent to 12,000 BTU/h or 3.5 kW. Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in “tons” (of refrigeration)….
| ton of refrigeration | |
|---|---|
| Unit of | Power |
| Symbol | TR |
| Conversions | |
| 1 TR in … | … is equal to … |
How is chiller KW TR calculated?
The metric calculation would be: 2,500kW / 460kW = 5.4 so the COP is 5.4. This means that for every 1kW of electricity you put into the machine, you will produce 5.4kW of cooling. 2,500kW / 460kW = 5.4 so the COP is 5.4.
How do you calculate Manual J?
The formula for the Manual J calculation requires separate functions, which might look like this:
- (House surface in square feet) x (height of the ceiling)
- (Number of occupants) x 100 BTU.
- (Number of exterior doors) x 1,000 BTU.
- (Number of windows) x 1,000 BTU.