Difference between Open and Closed Feedwater Heaters
Comparison between Open and Closed Feedwater Heater
Difference between Open and Closed Feedwater Heaters with Comparison Chart.
|Open Feedwater Heater
|Closed Feedwater Heater
|They are simple and inexpensive.
|Due to internal tubing, they are complex and expensive.
|They have good characteristics.
|Less effective since the two streams are not allowed to be in direct contact.
|For each heater, a separate pump is required to handle the feedwater to maintain the same pressure for extracted steam and feedwater.
|They do not require a separate pump for each heater since the extracted steam and the feedwater can be at different pressures.
|Feedwater leaving the saturated.
|Feedwater leaving the heater may not be saturated due to reduced effectiveness.
|Design will be simple.
|Design will be complex.
|Heat transfer capacity will be quite good as compared with a closed feedwater heater.
|Heat transfer capacity will be less effective as compared with an open feedwater heater.
|Open feedwater heater will be less costly.
|Closed feedwater heater will be more costly.