What is a direct contact water heater?

What is a direct contact water heater?
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Google is your friend! If you type your exact question in Google…dozens of sites/explanations come up. Good Luck!
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An electric heater draws 5 kW of power for continuous hot water generation in an industry. How much quantity of water in litres per min can be heated from 30oC to 85oC ignoring losses?. a) 1.3 b) 78.18 c) 275 d) none of the above

Description : An electric heater draws 5 kW of power for continuous hot water generation in an industry. How much quantity of water in litres per min can be heated from 30oC to 85oC ignoring losses?. a) 1.3 b) 78.18 c) 275 d) none of the above

Last Answer : a) 1.3

Explain construction and working of solar water heater.

Description : Explain construction and working of solar water heater.

Last Answer : Solar Water Heater  Construction A typical domestic solar water heater consists of a hot water storage tank and one or more flat plate collectors. Inlet and outlet pipes are connected ... the tank continues automatically due to density difference between hot and cold water (thermosyphon effect).

A process electric heater is taking an hour to reach the desired temperature while operating at 440 V. It will take ------- hours to reach the same temperature if the supply voltage is reduced to 220 V. a) 2 b) 3 c) 4 d) 5

Description : A process electric heater is taking an hour to reach the desired temperature while operating at 440 V. It will take ------- hours to reach the same temperature if the supply voltage is reduced to 220 V. a) 2 b) 3 c) 4 d) 5

Last Answer : c) 4

An electric heater consumes 1000 Joules of energy in 5 seconds. Its power rating is: a) 200 W b) 1000 W c) 5000W d) none of the above

Description : An electric heater consumes 1000 Joules of energy in 5 seconds. Its power rating is: a) 200 W b) 1000 W c) 5000W d) none of the above

Last Answer : a) 200 W

Answer the following S. No Statement Chose the correct answer OR Fill-in-the-blanks 1 Fyrite measures CO2, O2 and SO2 True/False 2 Ultrasonic Flow Meter uses the principle of____& ____ Fill in the blanks 3 Non Contact Infrared Thermometer cannot measure temperature of objects placed in hazardous places True/False 4 To measure the RPM of a Flywheel, ______ type of RPM meter is used and for a visible shaft-end _______ type of RPM meter is used. Fill in the blanks 5 In a switch yard, _____ instrument is used to identify the loose joints and terminations Fill in the blanks 6 Every Designated Consumer shall have its first energy audit conducted by ________ Energy Auditor within ______ months of

Description :  Answer the following S. No Statement Chose the correct  answer OR Fill-in-the-blanks 1 Fyrite measures CO2, O2 and SO2 True/False 2 Ultrasonic Flow Meter uses the principle of____& ____ Fill in the ... of RPM  meter is used and for a visible shaft-end _______ type of  RPM meter is used.

Last Answer : Sr  No Statement Chose the correct  answer OR Fill-in-the-blanks Solution 1 Fyrite measures CO2, O2 and  SO2 True/False False 2 Ultrasonic Flow Meter uses the  principle of____& ____ ... ]  10 In a gasification system the  reduction zone is above the  combustion zone True/False False

Explain with schematic diagram direct distribution of solar energy.

Description : Explain with schematic diagram direct distribution of solar energy.

Last Answer : Explain with schematic diagram direct distribution of solar energy: Solar energy reaching earth's surface consists of two components: i) Direct solar energy, ii) Diffused solar energy. Direct solar energy ... radiation. It is very intense radiation and it can produce sun burns and shadows.

With neat diagram explain calibration of energy meter by direct loading method.

Description : With neat diagram explain calibration of energy meter by direct loading method.

Last Answer : Calibration of Energy Meter by Direct Loading Method:  There are three methods for testing/calibration:  1. Long period dial test  2. Using rotary sub- standard meter  3. Using precision grade instruments  All ... of substandard meter in kWh  Then % error = [(D - DS)/DS] x 100

n a chemical factory where dyes are made, wet cake at 30 OC consisting of 60% moisture is put in a dryer to obtain an output having only 5% moisture, at atmospheric pressure. In each batch about 120 kgs of material is dried. a. The quantity of moisture removed per batch. b. What is the total quantity ( sensible & latent) of heat required to evaporate the moisture, if the latent heat of water is 540 kcal/kg at atmospheric conditions, Ignore heat absorbed by the solids c. Find the quantity of steam required for the drying process (per batch), if steam at 4 kg/cm2 is used for generating hot air in the dryer and the dryer efficiency is 80%. Latent heat of steam at 4 kg/cm2 is 520 kcal/kg.

Description : n a chemical factory where dyes are made, wet cake at 30 OC consisting of 60% moisture  is put in a dryer to obtain an output having only 5% moisture, at atmospheric pressure. In  each batch about 120 ... dryer and the dryer efficiency  is 80%. Latent heat of steam at 4 kg/cm2 is 520 kcal/kg.

Last Answer : Given that   Qty of material dried per batch - 120 Kgs  Moisture at inlet - 60% a. The quantity of moisture removed per batch.  Water quantity in a wet batch - 120 x 0.6 = 72 Kgs.  Quantity of bone dry ... - 48/0.95 = 50.5 Kgs.  Equivalent water in a dry batch - 50.5 - 48 = 2.5 Kgs.

Which of the following is false? a) electricity is high-grade energy b) high grade forms of energy are highly ordered and compact c) low grade energy is better used for applications like melting of metals rather than heating water for bath

Description : Which of the following is false? a) electricity is high-grade energy b) high grade forms of energy are highly ordered and compact c) low grade energy is better used for applications like melting of metals rather than heating water for bath

Last Answer : c) low grade energy is better used for applications like melting of metals rather than heating water for bath

The number of moles of water contained in 36 kg of water is ------------ a) 2 b) 3 c) 4 d) 5

Description : The number of moles of water contained in 36 kg of water is ------------ a) 2 b) 3 c) 4 d) 5

Last Answer : a) 2

The power generation potential in mini hydro power plant for a water flow of 3 m3 /sec with a head of 14 meters and with a system efficiency of 55% is a) 226.6 kW b) 76.4 kW c) 23.1 kW d) none of the above

Description : The power generation potential in mini hydro power plant for a water flow of 3 m3 /sec with a head of 14 meters and with a system efficiency of 55% is a) 226.6 kW b) 76.4 kW c) 23.1 kW d) none of the above

Last Answer : a) 226.6 kW

Which of the following has the highest specific heat? a) lead b) mercury c) water d) alcohol

Description : Which of the following has the highest specific heat? a) lead b) mercury c) water d) alcohol

Last Answer : c) water

1 kg of wood contains 15% moisture and 5% hydrogen by weight. How much water is evaporated during complete combustion of 1kg of wood? a) 0.6 kg b) 200 g c) 0.15 kg d) none of the above

Description : 1 kg of wood contains 15% moisture and 5% hydrogen by weight. How much water is evaporated during complete combustion of 1kg of wood? a) 0.6 kg b) 200 g c) 0.15 kg d) none of the above

Last Answer : b)200 g

The benchmarking parameter for a vapour compression refrigeration system is a) kW / kg of refrigerant used b) kcal / m3 of chilled water c) BTU / Ton of Refrigeration d) kW / Ton of Refrigeration

Description : The benchmarking parameter for a vapour compression refrigeration system is a) kW / kg of refrigerant used b) kcal / m3 of chilled water c) BTU / Ton of Refrigeration d) kW / Ton of Refrigeration

Last Answer : d) kW / Ton of Refrigeration

If a house has solar panels and all energy is free, then is it ok to leave the lights on?

Description : If a house has solar panels and all energy is free, then is it ok to leave the lights on?

Last Answer : I think it would be wise to not waste any energy whether it's free or paid. Every electronic item has a limited working lifespan, if you were to run it all the time, it's gonna break very soon. Aside ... then the short answer is Yes . You can waste as much as you want since you own this energy.

Why don't they construct giant magnifying lenses to create heat and power?

Description : Why don't they construct giant magnifying lenses to create heat and power?

Last Answer : We already do This is probably what you pictured in your head, but it is exactly the same thing on a very large scale. excerpt Creating and storing power was the easy part. Far trickier was finding a way to deal with the stresses created by “radiation fluxes”

Is the energy crisis real?

Description : Is the energy crisis real?

Last Answer : Who is calling it a crisis? We have plenty of energy here in the US. OPEC has been aggrresive at limiting supply and raising prices.

Why is there such a difference between highway and around town miles per gallon?

Description : Why is there such a difference between highway and around town miles per gallon?

Last Answer : Yes to starting and stopping. Gas is used to get up to speed; braking slows it down and repeat. Also on the highway you are in the top gear with fewer RPM’s less gas is used.

When to use dry batteries, when to use wet batteries, and where do you find them?

Description : When to use dry batteries, when to use wet batteries, and where do you find them?

Last Answer : In many cases, dry cell batteries are not rechargeable, where wet cell batteries are. Dry cell batteries were once used in old telephone systems and wet cell batteries are used in automobiles. ... means of absorbent material -from The New Century Dictionary, 1944 ed. Like a flashlight battery.

What branch of science does research into tachyon energy computing ?

Description : What branch of science does research into tachyon energy computing ?

Last Answer : Right after we reach “the speed of light”. We are close, to speed of light, with the Large Hadron Collider.

Is it possible to convert infrared energy into electricity?

Description : Is it possible to convert infrared energy into electricity?

Last Answer : Silicon solar cells can convert the shorter wavelengths of IR to electricity: https://www.solarquotes.com.au/blog/uv-solar-panels/ You can also concentrate solar IR and use the ... .com/innovationtoronto.com/wp-content/uploads/2015/12/Solar-Thermal-Power-Plant_forcetoknow.com_.jpg?resize=627%2C221

Which takes less energy?

Description : Which takes less energy?

Last Answer : Send this Q to LuckyGuy!

Why is it important to not mix brands of batteries in a device (whatever kind of device)

Description : Why is it important to not mix brands of batteries in a device (whatever kind of device)

Last Answer : It is the type of battery not the brand. Types of batteries include: Carbon Zinc, Alkaline, Rechargeable Alkaline, Li-Ion or NiCD.

Does Isis want to destroy the planet?

Description : Does Isis want to destroy the planet?

Last Answer : Your question details are a non sequitor to your question on ISIS. ISIS does not want to destroy the planet, just civilizations that it considers evil. But what the hell does that have to do with renewable energy? Besides, ISIS gets funding from oil sales.

Have they successfully converted energy to mass?

Description : Have they successfully converted energy to mass?

Last Answer : They?

How do you feel about the expansion of nuclear power as a zero CO2 emission energy alternative?

Description : How do you feel about the expansion of nuclear power as a zero CO2 emission energy alternative?

Last Answer : In general I am in favor of the newer Gen 3 and the future Gen 4 designs. Gen 1 and 2 now in the field are fossils. Yes, there is nuclear waste that we don'[t know how to handle ... never become the utopian Hydrogen society and nuclear waste will continue to fester for tens of thousands of years.

What to do if you feel that there is no energy to do something?

Description : What to do if you feel that there is no energy to do something?

Last Answer : Lying down without sleeping. Shorter power naps. Meditation. Changing your life situation so you aren’t upset about it. Taking breaks and stepping outside. Changing/improving your work location (lighting, noise, distractions, air quality). Various other personal developmental approaches.

Can you help with home heating question?

Description : Can you help with home heating question?

Last Answer : We don’t do homework questions here.

Why do we relate the square of the speed of light in energy?

Description : Why do we relate the square of the speed of light in energy?

Last Answer : You’re squaring the speed at which light travels, not light itself.

How can I figure out how much energy a hummingbird expends while hovering?

Description : How can I figure out how much energy a hummingbird expends while hovering?

Last Answer : answer:I don’t know all the formulas, but the approach to solving it is lift = load Since F= mA, and m = mass of a hummingbird and A = acceleration of gravity (32ft/sec/sec), the lift energy must be equal to the load force.

Alternative energy - why not an executive order that every new construction have solar panels?

Description : Alternative energy - why not an executive order that every new construction have solar panels?

Last Answer : I’d be down for that.

Is gravity a renewable resource?

Description : Is gravity a renewable resource?

Last Answer : Renewable? What “exhausts” or diminishes it? If a falling stream drives a water wheel, the water might dry up, but you will wait a long time for the day when a single drop fails to fall or even falls more slowly.

Are you venting your electric dryer into your home during this patch of cold weather?

Description : Are you venting your electric dryer into your home during this patch of cold weather?

Last Answer : With the dryer venting into the house all the energy stays indoors. You are drying your clothes and humidifying your house for free.

Do you believe in negative energy/vibes in objects?

Description : Do you believe in negative energy/vibes in objects?

Last Answer : No. That is nothing more than superstition.

Do you drink Energy drinks?

Description : Do you drink Energy drinks?

Last Answer : No. I never understood the existence of these things. It’s as though coffee was never invented.

What are some good or natural ways of gaining long term energy to workout longer or for other projects?

Description : What are some good or natural ways of gaining long term energy to workout longer or for other projects?

Last Answer : Eat a banana.

Suggestions on books about the global energy market?

Description : Suggestions on books about the global energy market?

Last Answer : answer:I would recommend The Prize (Daniel Yergin) but that is somewhat dated now and is definitely more pointed at the petroleum industry. Yergin also (more recently) wrote The Quest, which is a ... to some checking on which issue(s) of each to consult, but they are both quality publications.

Is the total mass and energy of the Universe constant?

Description : Is the total mass and energy of the Universe constant?

Last Answer : No, it does not imply that, it just means the empty spaces get bigger. From what I understand, the emptiness is not all dark matter and energy.

If I jog too early will I become uneasy?

Description : If I jog too early will I become uneasy?

Last Answer : Are you eating enough and staying energized? What is your dietary intake like? What is your sleep schedule like? These are additional aspects that you should monitor when entering a new exercise routine. We might be able to give you more direction with some further information.

Australians: How do I get a fluorescent globe that isn't dull and green?

Description : Australians: How do I get a fluorescent globe that isn't dull and green?

Last Answer : USA answer, look for CFL bulbs with a 3000* K or LESS for “color temperature”. The blues and greenish color come from CFL’s at slightly higher * K, the bulb come with up to 6500 *K which is called “daylight” by some.

[SFW] Does matter matter? See detais.

Description : [SFW] Does matter matter? See detais.

Last Answer : TLDR. Yes, it matters. OK.

What energy drink should I have today?

Description : What energy drink should I have today?

Last Answer : As a person with severe sleep problems, I highly recommend that you avoid drinking more caffeine than you usually do. Rather, do the unthinkable and try to go for a walk to start your day. When you feel ... and get moving again. If all else fails, avoid the energy drinks and go for a small coffee.

How many Wh of heat does each Hot Hands packet offer?

Description : How many Wh of heat does each Hot Hands packet offer?

Last Answer : answer:I do not have the absolute scientific answer for you but I do have a subjective one that might help others answer your question. First I commend you for asking the question in the form ... $0.00084 = ~ 0.1 cents Batteries and chemical heaters are very expensive when compared with electricity.

What cities around the world use steam heat and what are the pros and cons?

Description : What cities around the world use steam heat and what are the pros and cons?

Last Answer : answer:Most municipal steam heating uses waste heat , that is, steam that has already been used in some process or other (typically electric power generation), but no longer has the pressure or ... it. That's not such a problem in the summer time, when maintenance outages are normally scheduled.

What are the greatest opportunities for moving U.S. energy policy forward?

Description : What are the greatest opportunities for moving U.S. energy policy forward?

Last Answer : A Democratic President with a 60 seat Democratic majority in the House, and 65 seats for the Democrats in the Senate.

If you found out helmets were unnecessary, would you be more likely to use a bike sharing program in the city?

Description : If you found out helmets were unnecessary, would you be more likely to use a bike sharing program in the city?

Last Answer : Helmets do save lives. I think people should be able to choose for themselves but, one cannot dispute the safety factor. I've been a horse person most of my life and helmets are mandatory in any ... brain damaged. Bikes, motorcycles, horses, yep, a good idea even if they are hot and uncomfortable.

What's the best way to store mechanical energy?

Description : What's the best way to store mechanical energy?

Last Answer : One way to store mechanical energy is to convert it into potential energy, such as raising a weight. Many grandfather clocks use this method, and it can store energy for an unlimited amount of time. ... is much more compact and does not depend on gravity; however, the springs can degrade with time.

Do atoms have more energy when moving?

Description : Do atoms have more energy when moving?

Last Answer : answer:Atoms are always moving. If there center-of-mass does not seem to be moving relative to some reference there is the internal movement of the electrons and the vibrational modes. But yes, ... of anything, at least because of the Heisenberg effect observing the momentum is going to change it.

Think back a couple of years, when corn was being touted as a "renewable energy source" and its plentiful supply would solve our energy problems forever. What happened?

Description : Think back a couple of years, when corn was being touted as a "renewable energy source" and its plentiful supply would solve our energy problems forever. What happened?

Last Answer : answer:Biofuels are a good idea in rich countries with surplus production of food. Biofuels are a bad idea in poor countries where people struggle to be able to pay for their food. Using ... farm. And there's also geothermal. Plus energy efficiency. Better windows. Better insulation of buildings.

Do you think that bad luck can be cleared away? Or changed in someway?

Description : Do you think that bad luck can be cleared away? Or changed in someway?

Last Answer : The native Americans burn white sage around the interior perimeter of their homes to dispel bad energy.