What is the formula for condenser?
– The formula for the capacity of condenser is given by C=Ad When A is the area of each plate and d is the distance between the plates.
How do you find the condenser surface area?
Solution: The surface area per tube will be: Sa = πDL = π (3/12) (10) ft² = 7.854 ft² – (D – tube diameter in ft).
How do you calculate condenser efficiency?
Vacuum efficiency = (Actual vacuum in condenser X 100)/Max. Obtainable vacuum. Example-4: The air leakage into the steam condenser is 0.721 kg/min.
How do you measure condenser length?
Anyhow there are five equations derived form mass/energy conservations are used to calculate the condenser/evaportor size.
- Q = U A LMTD.
- Q = m CP DT for a hot side.
- Q = m CP DT for a cold side.
- m = density * Ac * veocity for hot side.
- m = density * Ac * veocity for a cold side.
What is TTD of condenser?
TTD is an indication of the efficiency with which heat is transferred. While the TR can show an overall operational change and degradation in performance due to a decrease in flow, the TTD degradation is an indication of an actual change in heat transfer related to the condenser tubes themselves.
What is condenser capacity?
The condenser capacity is the ability of the condenser to transfer heat from the hot vapour refrigerant to the condensing medium. As the temperature difference increases, the heat transfers rate increases and therefore the condenser capacity increases.
How do you calculate condenser cooling water requirements?
- Water requirement in condenser:
- In a condenser the circulating water extracts heat from the vapour to be condensed and the temperature of the circulating water is raised.
- Heat received by circulating water from one kg.
- Heat given out by one kg.
- From equation (i) and (ii), we get m × S × (t2 – t1) = H – h1
How do you calculate cooling load of condenser?
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 air cooled condenser capacity calculated?
These capacities are given in MBH/°TD. Convert the THR calculated in step 2 to MBH/°F TD by dividing by 1,000 to get THR in MBH. Then divide the THR by the design TD to get MBH/°F TD.
What is TTD and DCA?
TTD is defined as the saturation temperature of the extraction steam minus the feedwater outlet temperature. Drain Cooler Approach (DCA) is a method used to infer feedwater heater levels based on the temperature difference between the drain cooler outlet and the feedwater inlet.
How do you calculate condenser cleanliness factor?
The cleanliness factor (CF), is an alternate measurement of relative degradation in exchanger performance. CF=Ud/Uc ×100 CF is closed to 100 for a clean exchanger and decrease over time as the exchanger fouls.
How to calculate heat transfer in a condenser?
The heat transfer coefficient on the shell side, for vertical tubes, with the condensate in laminar flow can be expressed as : h shell = h shellv = 1.47* [λ 3 *ρ 2 *g/μ 2] 1/3 [ (4*Gv) / μ] -1/3
What kind of design does a condenser have?
Condensers can have different kind of design, including direct condensing which consists in contacting the vapor with the cooling fluid. This page is focusing however on condensers designed as shell – tube heat exchangers and installed in vertical or horizontal position.
How to calculate the heat exchanger design equation?
The heat exchanger design equation, Q = U A ΔT lm, can be used to determine the required heat transfer area, A, for a heat exchanger.
How is the heat flux of a condenser calculated?
It is assumed that the vapor to condensate is in the shell side. The heat flux can be calculated knowing the flowrate, the in and out temperatures, the specific heat of the fluid, and the latent heat of the fluid to condensate. If possible, it is easier to calculate the heat flux on the cold side as there is normally no phase change.