Explain the differences between the two types of feed water heaters.

Explain the differences between the two types of feed water heaters. 
by

1 Answer

Answer :

a. Open type: In which bleed steam and condensed water are mixes directly and there is also dearation of steam. 

b. Closed type (shell type): It has tubes and shell. The water passes through the tubes and steam passes through shell. The heat exchange takes placcce through the metal tubes. 
by

Related questions

Why are feed water heaters are used?

Description : Why are feed water heaters are used?

Last Answer : Regenerative Feedwater heaters are employed in steam power plants to improve the cycle efficiency. Also it increases the steam flow rate and reduces the steam flow to the condenser. They raise the temperature of the feed water before it enters the economizer

List the types of super heaters:

Description : List the types of super heaters:

Last Answer : 1. Radiant super heater- absorb heat by radiation 2. Convention super heater-absorb heat via a fluid 3. Separately fixed super heaters- it is totally separated from the boiler

The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual magnetism C. kept warm by using strip or space heaters D. relieved of all capacitive charge by grounding the conductors

Description : The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual ... using strip or space heaters D. relieved of all capacitive charge by grounding the conductors

Last Answer : Answer: C

On large generators, space heaters are used to ____________. A. keep the machine at ambient tmperature of the machinery space B. maintain rotor and stator winding temperatures above the dew point to prevent the formation of condensation C. prevent condensation in the lube oil D. prevent electrolysis due to condensation in the bearings

Description : On large generators, space heaters are used to ____________. A. keep the machine at ambient tmperature of the machinery space B. maintain rotor and stator winding temperatures above the dew point ... C. prevent condensation in the lube oil D. prevent electrolysis due to condensation in the bearings

Last Answer : Answer: B

In the illustration, when the energy saver switch is in the 'lo' position, the _________. EL-0043 A. mullion and frz flange heaters will not energize B. mullion heater and refrig light will not energize C. mullion, frz flange, defrost heaters will not energize D. range of the freezer temperature control is increased causing the cut-in temp to become warmer

Description : In the illustration, when the energy saver switch is in the 'lo' position, the _________. EL-0043 A. mullion and frz flange heaters will not energize B. mullion heater and refrig light will ... energize D. range of the freezer temperature control is increased causing the cut-in temp to become warmer

Last Answer : Answer: A

Some large A.C. motors are equipped with with heaters. These could be ___________. I. resistance heaters bolted directly to the frame II. low voltage windings embedded in the motor windings A. I only B. II only C. either I or II D. neither I or II

Description : Some large A.C. motors are equipped with with heaters. These could be ___________. I. resistance heaters bolted directly to the frame II. low voltage windings embedded in the motor windings A. I only B. II only C. either I or II D. neither I or II

Last Answer : Answer: C

In the illustration, when the energy saver switch is in the 'lo' position _________. EL-0042 A. the mullion and frz flange heaters will not energize B. the mullion heater and refrig light will not energize C. the mullion, frz flange, defrost heaters will not energize D. the range of the freezer temperature control is increased causing the cut-in temp to become warmer

Description : In the illustration, when the energy saver switch is in the 'lo' position _________. EL-0042 A. the mullion and frz flange heaters will not energize B. the mullion heater and refrig light will ... D. the range of the freezer temperature control is increased causing the cut-in temp to become warmer

Last Answer : Answer: A

Which of the following procedures should be used to maintain a large electric motor during periods of inactivity? A. A thin layer of air-drying varnish should be applied on the windings. B. Compressed air should be blown over areas where dust is deposited. C. Spraying a solvent periodically to remove carbon dust. D. Space heaters should be used to prevent condensation of moisture.

Description : Which of the following procedures should be used to maintain a large electric motor during periods of inactivity? A. A thin layer of air-drying varnish should be applied on the windings. B. ... periodically to remove carbon dust. D. Space heaters should be used to prevent condensation of moisture.

Last Answer : Answer: D

The heaters for the winch circuit shown in the illustration are powered from _____________. EL-0102 A. a separate source B. the winch main bus C. the master switch power circuit D. the contactor control circuit

Description : The heaters for the winch circuit shown in the illustration are powered from _____________. EL-0102 A. a separate source B. the winch main bus C. the master switch power circuit D. the contactor control circuit

Last Answer : Answer: A

Motor controllers are seldom troubled by grounds because ________________. A. cabinet heaters always keep internal components dry B. special insulation is used on wire for vital circuits C. shock mounts on controller panels greatly reduce vibration D. contactors and relays are mounted on nonconducting panels

Description : Motor controllers are seldom troubled by grounds because ________________. A. cabinet heaters always keep internal components dry B. special insulation is used on wire for vital circuits C. ... on controller panels greatly reduce vibration D. contactors and relays are mounted on nonconducting panels

Last Answer : Answer: D

In addition to testing the calibration of a circuit breaker, maintenance should include all of the following EXCEPT ______________. A. changing out of magnetic elements and thermal heaters yearly B. checking for corrosion, accumulation of dirt and thermal fatigue C. inspecting for loose or missing parts D. making sure foreign matter does not block tripping element

Description : In addition to testing the calibration of a circuit breaker, maintenance should include all of the following EXCEPT ______________. A. changing out of magnetic elements and thermal heaters yearly B. ... for loose or missing parts D. making sure foreign matter does not block tripping element

Last Answer : Answer: A

Which of the listed devices may be installed on a large diesel-electric alternating current propulsion generator? A. Temperature detector coils inserted in the stator slots for measuring stator temperature. B. A CO2 fire extinguishing system. C. Electric space heaters to prevent condensation of moisture. D. All of the above.

Description : Which of the listed devices may be installed on a large diesel-electric alternating current propulsion generator? A. Temperature detector coils inserted in the stator slots for measuring stator temperature. B. ... . C. Electric space heaters to prevent condensation of moisture. D. All of the above.

Last Answer : Answer: D

Electric strip heaters are used in motor controllers to _____________. A. prevent freezing of movable contacts B. keep the components at their design ambient temperature C. prevent condensation of moisture D. minimize resistance in internal circuits

Description : Electric strip heaters are used in motor controllers to _____________. A. prevent freezing of movable contacts B. keep the components at their design ambient temperature C. prevent condensation of moisture D. minimize resistance in internal circuits

Last Answer : Answer: C

Moisture damage, as a result of condensation occurring inside of the cargo winch master switches, can be reduced by __________________. A. installing a light bulb in the pedestal stand B. coating the switch box internals with epoxy sealer C. venting the switch box regularly D. using strip heaters inside the switch box

Description : Moisture damage, as a result of condensation occurring inside of the cargo winch master switches, can be reduced by __________________. A. installing a light bulb in the pedestal stand B. coating the ... epoxy sealer C. venting the switch box regularly D. using strip heaters inside the switch box

Last Answer : Answer: D

Which of the listed devices may be installed on a large turbo-electric alternating current propulsion generator? A. Temperature detector coils inserted in the stator slots for measuring stator temperature. B. A CO2 fire extinguishing system. C. Electric space heaters to prevent condensation of moisture. D. All of the above.

Description : Which of the listed devices may be installed on a large turbo-electric alternating current propulsion generator? A. Temperature detector coils inserted in the stator slots for measuring stator temperature. B. A ... . C. Electric space heaters to prevent condensation of moisture. D. All of the above.

Last Answer : Answer: D

In MAPS Unit # 1 end-shield cooling system has got heaters. Why?

Description : In MAPS Unit # 1 end-shield cooling system has got heaters. Why?

Last Answer : Unit # 1 end-shield is made of nickel steel, which had a nil ductility temperature of -100°C while commissioning. After 30 years of operation this will rise to +32°C, because of radiation exposure. ... #2 this problem is not existed because in this unit end-shields are made up of stainless steel. 

Have you had any experience with tankless water heaters?

Description : Have you had any experience with tankless water heaters?

Last Answer : Yes, I had a gas tankless. It still needed electricity to heat water. If your electricity goes out you instantly have zero hot water, unlike a tank you can usually have warm water 2-3 days if ... sink or bathtub That basically give you instant hot at the location. Takes up less space than a tank.

How do water heaters work, and why not make them like electric tea kettles?

Description : How do water heaters work, and why not make them like electric tea kettles?

Last Answer : Electric hot water heaters have a heating element (usually coiled) that is powered on whenever the thermostat detects that the temp in the tank is below what has been set. Your electric kettle has, at ... the US because people like hot showers and the tankless heaters can't keep up with the demand.

Is it a law that the phone must ring while you're in the shower, and hot water heaters and furnaces must break down on Holiday long weekends?

Description : Is it a law that the phone must ring while you're in the shower, and hot water heaters and furnaces must break down on Holiday long weekends?

Last Answer : It’s a Laws of the Universe thing.

Should the government pay for or at least subsidize the installation of new hot water heaters?

Description : Should the government pay for or at least subsidize the installation of new hot water heaters?

Last Answer : answer:That is more on the last mile end of energy conservation of things. While it would make sense, it's also a costly undertaking. A water heater may only be $250 but how many millions ... only see someplace like the EU. We are too stuck in the 19th century to do something that progressive.

Instant hot water heaters?

Description : Instant hot water heaters?

Last Answer : We put one in recently….I have mixed feelings about it. It’s nice in reducing bills, but because we do not have a supplementary tank, it can take 30sec to a minute to heat. And the further the faucet is from the heater, it seems to take longer.

What causes a water heaters relief valve to discharge water?

Description : What causes a water heaters relief valve to discharge water?

Last Answer : The relief valves are installed on every water heater for your safety. If the tank builds up too much pressure inside it can explode. The relief valve is there to relieve the pressure in the ... the tank exceeds this limit the pressure valve is activated and will relieve the pressure in the tank.

Saving Money On Water Heaters?

Description : Saving Money On Water Heaters?

Last Answer : Replacing a water heater is often an emergency repair. When the water heater is leaking or failing to provide hot water, simply getting the hot water back on becomes such a high priority that little thought ... that are rated to last for a longer time. Your initial cost may be a little higher,

Which are more economical, gas or electric water heaters?

Description : Which are more economical, gas or electric water heaters?

Last Answer : Gas heaters can be more economical. If there is a high supply of gas in the area it would have cheaper prices. Electric can be cheaper in other areas though.

Tankless Water Heaters?

Description : Tankless Water Heaters?

Last Answer : form_title= Tankless Water Heaters form_header= Hot water without the tank. DO you need to remove an old water heater?*= () Yes () No When do you want the water heater installed?*= _ [50] What is your budget for a water heater?*= _ [50]

Which ways can one avoid water heater problems, and are there any ways to trouble shoot electric heaters?

Description : Which ways can one avoid water heater problems, and are there any ways to trouble shoot electric heaters?

Last Answer : In order to ensure that your electric water heater stays in good working order, you should regularly check for, or if unable to do yourself, have a maintenance person check for any damage or faulty ... , and piping can allow you to catch any deterioration or wear before it becomes a large problem.

What are some drawbacks of Bradford White Water Heaters?

Description : What are some drawbacks of Bradford White Water Heaters?

Last Answer : Bradford Water Heaters have a strong reputation and the company has been around for over 100 years. Probably the biggest drawback to this heater is it's cost. The initial investment can be quite high. ... quality, there is always a cost. Over time, the heater will likely be well worth the expense.

Are Bradford White Water Heaters capable of being run on an electrical system or are they only powered by natural gas?

Description : Are Bradford White Water Heaters capable of being run on an electrical system or are they only powered by natural gas?

Last Answer : No if your heater is electric you can not use a gas heater you have to use the electric heater and it would really cause too much to change over from electric to gas so I would truly stick to what heater you have noiw

What type of water heaters have good recommendations?

Description : What type of water heaters have good recommendations?

Last Answer : What type of water heaters have good recommendations? I wouldn't really care for water heating unless my water isn't cold. But the best two I recommend would be Rheem Water Heater, and Utah Water Heater Company.

Does sears sell used water heaters in good condition?

Description : Does sears sell used water heaters in good condition?

Last Answer : Yes, from personal experiences I can inform you that Sears does in fact sell used water heaters. Sears' used water heaters are sold in fairly good condition and at a very affordable price.

Are Bradford water heaters worth the cost?

Description : Are Bradford water heaters worth the cost?

Last Answer : No,they are not cost efficient. Bradford water heaters aren't worth the cost because replication parts are very hard to find and they don't come with refund or warranty.

i am asking about maytag water heaters?

Description : i am asking about maytag water heaters?

Last Answer : Maytag is one of the best brands out there for appliances. It is a bit pricey but it is good affordable. You won't regret buying any thing from Maytag.

Is it financially sound to switch to solar powered water heaters?

Description : Is it financially sound to switch to solar powered water heaters?

Last Answer : If you switch to solar power heaters you earn a lot if money and you will be going green. Also if you switch you would save a lot of money in your energy bill and some money on water.

Where can I find Rheem water heaters for a good price?

Description : Where can I find Rheem water heaters for a good price?

Last Answer : YOu can find Rheem water heaters for a good price by going to www.ebay.com or www.Amazon.com to find a lot of low prices and a very wide selection of weater heaters to choose form SO

Are tankless water heaters available?

Description : Are tankless water heaters available?

Last Answer : Tankless water heaters are available at most hardware/construction retail stores or online stores. Tankless water heater are much more expensive than regular water heaters.

Are tankless water heaters more cost effective than the traditional water heater?

Description : Are tankless water heaters more cost effective than the traditional water heater?

Last Answer : While tankless water heaters are significantly more efficient than traditional water heaters, it can take up to 22 years to break even on the cost, due to the initial expense of the ... cro/appliances/heating-cooling-and-air/water-heaters/tankless-water-heaters/overview/tankless-water-heaters-ov.htm

How do tankless water heaters operate?

Description : How do tankless water heaters operate?

Last Answer : Unlike traditional tank water heaters, tankless systems do not heat a large quantity of water and hold it until you need it. Instead, they heat your water on-demand, when you turn on the tap. A small heating system warms the water as it runs past it in the pipe.

Which Indian city has the most numbers of rooftop solar water heaters

Description : Which Indian city has the most numbers of rooftop solar water heaters

Last Answer : Bengaluru

A hydrometer indicates specific gravity by comparing the _____________. A. density of a substance in water with the density of the same substance in air B. differences in weight between water and the liquid measured C. mass of substance measured with the density of the same substance D. buoyancy of an object in water with the buoyancy of the same object in the liquid being measured

Description : A hydrometer indicates specific gravity by comparing the _____________. A. density of a substance in water with the density of the same substance in air B. differences in weight between water and the ... of an object in water with the buoyancy of the same object in the liquid being measured

Last Answer : Answer: D

What consists of feed water and steam flow circuit in steam power?

Description : What consists of feed water and steam flow circuit in steam power?

Last Answer : The feed water and steam flow circuit consists of feed pump, economizer boiler drum super heater, turbine and condenser.

How dissolved oxygen control is achieved in feed water system?

Description : How dissolved oxygen control is achieved in feed water system?

Last Answer : Hydrazine is added to feed water system to control dissolved oxygen.  

What are the benefits of feed water heating?

Description : What are the benefits of feed water heating? 

Last Answer : a. It improves the plant efficiency.  b. Feed water is heated nearer to saturation point thus thermal shock to boiler is avoided. 

What would be the total power drawn from the supply, when two heaters, rated at 1000 W, 250 V each ...

Description : What would be the total power drawn from the supply, when two heaters, rated at 1000 W, 250 V each are connected in series across a 250 V, 50 Hz supply?  (A) 1000 W (B) 500 W (C) 250 W (D) 2000 W

Last Answer : Answer:B. One heater 1000W, 250V resistance is 62.5ohm. Two Series connected heaters so, 62.5+62.5=125ohm. Current in the series circuit is 250V/125ohm = 2A. Total power drawn = current2 X R = 22 x 125 = 500W.

Two heaters, rated at 1000 W, 250 V each are connected in series across...

Description : Two heaters, rated at 1000 W, 250 V each are connected in series across a 250 V, 50 Hz ac mains. The total power drawn from the supply would be __________ watt.

Last Answer : Two heaters, rated at 1000 W, 250 V each are connected in series across a 250 V, 50 Hz ac mains. The total power drawn from the supply would be 500 watt.

If you are in Australia: which of these heaters do you think is more efficient?

Description : If you are in Australia: which of these heaters do you think is more efficient?

Last Answer : When we were in Sydney we had one of those oil filled radiators and it wasn't very efficient unless you sat on it. But that was 15 years ago. In Queensland we had the ac/heater thing. I think they ... every room. Just remember to turn them off when you leave the room. How's it going over there???

Will the same thermostat work for both oil and gas heaters?

Description : Will the same thermostat work for both oil and gas heaters?

Last Answer : Check with your furnace guy. That said, in two different houses I’ve had I switched from oil to gas and didn’t have to switch out the thermostat.

Are there portable space heaters that aren't electric? Can you recommend one?

Description : Are there portable space heaters that aren't electric? Can you recommend one?

Last Answer : There’s always kerosene. I have a small kerosene heater for power outages. Smells a bit when you first start it up, though. Do you have natural gas in the office?

How safe are ventless gas heaters indoors?

Description : How safe are ventless gas heaters indoors?

Last Answer : I don’t know specifically about the gas heater, but: Make sure your CO detector is at or above head level, otherwise it’ll go off too late.

I can't get heaters and wipers when starting.

Description : When the car is chciple everything works when starting, there are no wipers or heating ... Relatka are fine and the fuses..I do not know what he gave..Thanks for the answer

Last Answer : Visit service

Are there any space heaters that are powered only by battery?

Description : Are there any space heaters that are powered only by battery?

Last Answer : Need Answer