How do you calculate 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 |
|---|---|---|
| 54000 | 4 1/2 | 15.8 |
| 60000 | 5 | 17.6 |
What is Accurator in refrigeration?
A refrigerator actuator or water dispenser consists of a paddle-shaped lever that releases ice or water. When the water dispenser lever will not work or depressing the lever causes little to no water flow, there may be air in the water dispenser supply lines or a broken lever mechanism that needs to be replaced.
How is refrigerator effect calculated?
Refrigeration Formulas
- Compression Work. Compressor work can expressed as.
- Compression Horsepower. Compression horsepower can be expressed as.
- Compression horsepower per Ton. p = 4.715 / COP (2c)
- COP – Coefficient of Performance. COP = NRE / h (3)
- Net Refrigeration Effect.
- Capacity.
- Compressor Displacement.
- Heat of Compression.
What is the normal COP of refrigerator?
The result shows that the average COP of the refrigeration system using the refrigerator test rig was about 2.7. Refrigerator is a cooling appliance comprising a thermally insulated compartment and a refrigeration system is a system to produce cooling effect in the insulated compartment.
How do I calculate BTU for refrigeration?
Step 1: Measure The Square Footage (Length, Width, Height Exact To 0.25 Ft)
- Square Footage = Measured Length x Measured Width.
- Square Footage = 16 3/4 ft (Length) x 14 1/2 ft (Width) = 243 sq ft.
- BTU Requirement = 500 sq ft x 20 BTU per sq ft = 10,000 BTU.
- Accurate BTU Calculation = 20,000 BTU * 1.1 + 600 BTU = 22,600 BTU.
What is a damper and actuator?
Dampers are the final control devices for almost all airflow in HVAC systems. Actuators are the interface between the control system and the mechanical system and are critical to accurate control.
What is use of damper actuator?
Damper Actuator can operate the damper or valve by remote control under the bad conditions such as high place, high temperature and much dust. Widely used in iron ＆ steel, cement, non-ferrous metal and electric power plants with its feature of easy maintenance and high reliability.
How do you calculate kwh of refrigeration?
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 the formula of coefficient of performance of refrigerator?
The coefficient of performance of the fridge is the refrigerating effect per cycle, Q1, divided by the net work done on the fridge per cycle, and, for a Carnot cycle it can be calculated from T1/(T2 − T1).
Can COP of refrigerator is greater than 1?
The coefficient of performance (COP) of refrigeration is always more than 1. Hence option (a) is correct. COP is the ratio of heat extracted from the refrigerator to the work done on the refrigerant. It is also called by the name Theoretical coefficient of performance.
How do you calculate refrigeration load?
Q = U x A x (Temp out – Temp in) x 24 ÷ 1000.
- Q= kWh/day heat load.
- U = U value of insulation (we already know this value) (W/m2.K)
- A = surface area of walls roof and floor (we will calculate this) (m2)
- Temp in = The air temperature inside the room (°C)
- Temp out = The ambient external air temperature (°C)
How many CFM is 1 ton?
400 CFM
How Many CFM For 1 – 6 Ton Units? ( Chart)
| Unit Tonnage: | CFMs Required: |
|---|---|
| 1 Ton Unit | 400 CFM |
| 1.5 Ton Unit | 600 CFM |
| 2 Ton Unit | 800 CFM |
| 2.5 Ton Unit | 1,000 CFM |