There are
three types
of superheaters: radiant, convection, and separately fired. A superheater can vary in size from a few tens of feet to several hundred feet (a few metres to some hundred metres).
What is the difference between boiler and super heater?
It is different from a boiler in a way that,
boiler utilizes both sensible heat as
well as latent heat to convert water into steam while superheater utilizes only sensible heat to superheat the steam in order to increase its enthalpy.
What is primary superheater?
Primary Superheaters are
the first heaters placed after steam drum
. Primary Superheater is a Low Temperature Superheater (LTSH). Low temp superheater pipes absorb heat from LTSH combustion exhaust gases.
How many methods of superheater temperature control are there?
Three major systems
are adopted the world over: the injection type, the flue gas flow diverting type, and the burner tilt. The last two are adopted for reheater steam temperature control. The first one is adopted for superheater temperature control.
What is economizer and super heater?
is that superheater is a component of a boiler system that heats the steam produced above its saturation temperature to prevent it condensing, and in case of a steam engine to improve its efficiency while
economizer is a person who avoids waste
.
What is economiser function?
Economizers
lower the consumption of fuel for a given steam demand
. They also reduce thermal stress in the boiler and add heat transfer surface area to the boiler system. “By recovering waste heat, an economizer can often reduce fuel requirements by 5% to 10% and pay for itself in less than 2 years.” –
Why superheater is used in boiler?
Superheaters and reheaters are
specially designed to increase the temperature of the saturated steam and to help control the steam outlet temperature
. They are simple single-phase heat exchangers with steam flowing inside and the flue gas passing outside, generally in the cross flow.
What is Attemperation method?
STEAM TEMPERATURE CONTROLS IN POWER PLANT BY DESUPERHEATING OR ATTEMPERATION METHOD. this is
a commonly used method to control superheated steam temperature
. In this method cold condensate is spryed directly to the superheated steam.
How many types of economizers are there Sanfoundry?
Explanation: Economizer makes use of waste heat from the hot gases to heat the feed water before suppling it to the boiler. There are
two types
of economizers – independent type and integral type. Independent type economizer is installed in the pathway of the hot gases.
How many types of economizers are there?
There are
2 types
of economizers: non-condensing and condensing.
What is boiler efficiency?
Definition of Boiler Efficiency is “
The percentage of the total absorption heating value of outlet
.
steam in the total supply heating value
.” In other word, it is a rate how the boiler runs efficiently.
Why economiser is used in chiller?
An economizer is a type of sub-cooler that
uses part of the total refrigerant flow from the condenser to cool the rest of the refrigerant flow
(see Figure 10.13). … The sub-cooling of the main refrigerant flow (m2) reduces the quality of the inlet vapor to the evaporator, which increases the cooling capacity.
What is deaerator principle?
Thermal deaeration relies on the principle that
the solubility of a gas in water decreases as the water temperature increases and approaches its boiling point
. … Deaeration is done by spraying feedwater into a chamber to increase its surface area, and may involve flow over multiple layers of trays.
What are the two types of economizer?
There are 2 types of condensing economizers:
heat exchanger and direct contact (spray)
.
What is a chiller economizer?
An economizer is
a type of sub-cooler that uses part of the total refrigerant flow from the condenser to cool the rest of the refrigerant flow
(see Figure 10.13). … The cold gas from the economizer can also be used to provide extra cooling for the compressor.
