Working Principle Of Earth Leakage Circuit Breaker(ELCB) And Its #Advantage and Disadvantages#!Imran

What is an Earth Leakage Circuit Breaker(ELCB)!Mohammad  Imran 

An ECLB is one kind of safety device used for installing an electrical device with high earth impedance to avoid shock. These devices identify small stray voltages of the electrical device on the metal enclosures and intrude the circuit if a dangerous voltage is identified. The main purpose of Earth leakage circuit breaker (ECLB) is to stop damage to humans & animals due to electric shock.

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Advantages of Voltage Operated ELCB

• ELCBs are less sensitive to fault conditions and have few nuisance trips.
• While current and voltage on the ground line generally fault current from a live wire, this is not continuously the case, therefore there are conditions in which an ELCB can annoyance trip.
• When an installation of the electrical instrument has two contacts to earth, a near high current lightning attack will root a voltage gradient in the earth, offering the ELCB sense coil with sufficient voltage to source it to a trip.
• If either of the soil wires become detached from the ELCB, it will no longer install will frequently no longer be correctly earthed.
• These ELCBs are the necessity for a second connection and the opportunity that any extra connection to ground on the threatened system can inactivate the detector.

Disadvantages of Voltage Operated ELCB

• They do not sense errors that don’t permit current through the CPC to the ground rod.
• They do not permit an only building system to be simply divided into many sections with independent error protection because earthing systems are typically used mutual earth, Rod.
• They may be skipped by outside voltages from something associated with the earthing system like as metal pipes, a TN-C-S or a TN-S earth mutual neutral and earth.
• As electrical leaky utilizations like washing machines, some water heaters and cookers might source the ELCB to trip.
• ELCBs present an extra resistance & an extra point of failure in 

06EF299610 Semi Hermetic Compressor by Imran

• 06EF299610 Semi Hermetic Compressor by                            Mohammad Imran.

• High-flow, automatically reversible oil pump provides positive-displacement oil lubrication.

• Crankcase venting system equalizes pressure during startup and assures oil return to sump.

• Oversize sump holds extra oil in crankcase to prevent levels dropping below safe lubrication range during flooded starts.
• Contoured pistons lower cylinder clearances to increase compressor capacity and efficiency.

• High-efficiency valves provide increased refrigerant flow and lower pressure drops.
• Electronic oil-pressure switch.

how to avoid from Hypertension by Mohammad Imran

To avoid a hypertension diagnosis, make these healthy lifestyle choices:

                              By Mohammad Imran.

1. Maintain a healthy weight. When it comes to hypertension prevention, your weight is crucial, says Dr. Ogedegbe. ...
2. Eat a balanced diet. ...
3. Cut back on salt. ...
4. Exercise regularly. ...
5. Limit the alcohol. ...
6. Monitor your blood pressure.

Absorption System and How it Works By Mohammad Imran

 Absorption System and How it Works? By Mohammad Imran 

1) Condenser: Just like in the traditional condenser of the vapor compression cycle, the refrigerant enters the condenser at high pressure and temperature and gets condensed. The condenser is of water cooled type.

2) Expansion valve or restriction: When the refrigerant passes through the expansion valve, its pressure and temperature reduces suddenly. This refrigerant (ammonia in this case) then enters the evaporator.

3) Evaporator: The refrigerant at very low pressure and temperature enters the evaporator and produces the cooling effect. In the vapor compression cycle this refrigerant is sucked by the compressor, but in the vapor absorption cycle, this refrigerant flows to the absorber that acts as the suction part of the refrigeration cycle.

4) Absorber: The absorber is a sort of vessel consisting of water that acts as the absorbent, and the previous absorbed refrigerant. Thus the absorber consists of the weak solution of the refrigerant (ammonia in this case) and absorbent (water in this case). When ammonia from the evaporator enters the absorber, it is absorbed by the absorbent due to which the pressure inside the absorber reduces further leading to more flow of the refrigerant from the evaporator to the absorber. At high temperature water absorbs lesser ammonia, hence it is cooled by the external coolant to increase it ammonia absorption capacity.

The Burj Khalifa by Mohammad Imran

The Burj Khalifa construction details by Mohammad Imran.

 known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. With a total height of 829.8 m and a roof height of 828 m, the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009. 

ahisr.blogspot.com



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Thermostatic Expansion Valve by Mohammad Imran.

Pressures Acting Inside the Thermostatic Expansion Valve by Mohammad Imran.

or TEV. The working of the thermostatic expansion valve can be explained with the help of the attached image of the valve. ... The pressure P2 is the pressure acting on the lower side of the diaphragm due to the refrigerant pressure inside the evaporator.

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Personal protective Equipment (PPE) ! Mohammad Imran

Personal protective Equipment (PPE) ! Mohammad Imran

https://ahisr.blogspot.com/2019/07/energy-efficiency-ratio-eer-by-imran.html?m=1

Refrigerant R-32,R-134a, R-410A, R-22 ! Imran

Mathematics symbols! Imran

Mathematics common Symbols ! Imran

Link Aadhaar Card to Voter ID EPIC through SMS ! Imran

Link Aadhaar Card to Voter ID EPIC through SMS. By Mohammad Imran

Because there has no way to find on the official website. Only you can link your voter id with Aadhar.

Send an SMS from your registered mobile number.

The SMS has to be sent to 166 or 51969.

The format of the message is ECILINK <SPACE><EPIC No.>< SPACE><Aadhaar No.>

The Top 08 causes of high humidity in your home!Imran

The Top 08 causes of high humidity in your home by Mohammad Imran.

• Showering. Bathrooms are often humid places and moisture is released into the air by something as simple as taking a shower. ...
  
• Boiling a kettle or cooking. ...
• Drying laundry inside. ...
• Gas heaters / propane heaters. ...
• Poor ventilation. ...
• Rising damp. ...
• Renovations. ...
• Coastal air.

Difference between AHU & FCU BY Mohammad Imran

Difference  between AHU & FCU By Mohammad  Imran

1. AHU is generally a bigger system than FCU.

2. AHU is more complex than the FCU and that AHU are often used in bigger establishments or spaces.

3. The AHU system usually channels air through ducts whereas the FCU don’t have any ductworks.

4. AHU system treats outside air while FCUs basically recycle or re-circulates the air.

5. AHU have sections for reheating and humidifying whereas the FCU does not have any.

6. FCU are often observed to be noisier than the AHU

Here are 8 things you can do to build up your self-confidence !Mohammad Imran

Featured snippet from the we

Here are 8 things you can do to build up your self-confidence by Mohammad  Imran 

1. Visualize yourself as you want to be. ...
2. Affirm yourself. ...
3. Do one thing that scares you every day. ...
4. Question your inner critic. ...
5. Take the 100 days of rejection challenge. ...
6. Set yourself up to win. ...
7. Help someone else. ...
8. Care for yourself

Avoid the 5 Common HVAC Installation Mistakes ! Imran

Avoid the 5 Common HVAC Installation MistakesChoosing the Wrong Installer. One of the first mistakes homeowners or businesses make is hiring the wrong HVAC contractor By.

                                              MOHAMMAD IMRAN 

• Selecting the Wrong Size. ...
• Poor Air Distribution Design. ...
• Poorly Designed Drain Systems.
• Incorrect Exhaust.

The Perfect Way to Introduce Yourself @ interview ! Imran

The Perfect Way to Introduce Yourself by Mohammad Imran .

GOOD Morning Sir/ Madam 

First of all I would like to thank you, for giving me an opportunity to introduce my self.

My self Name I belong from New Delhi.

I am pursuing my under graduation in Information Technology from Institute of Technology  .

I did my Intermediate from State Board with 72% & High school from State Board with 75%.

I like computer, Because In my schooling days, I have scored High marks in that subject compared to Maths, physics.

My Hobbies is playing shuttle, A Passion for music and teaching kids.

My Strength is takes Initiative to work independently, Good leadership skill, Adaptable to any kind of situation in estranged group & Helping tendency.

My Weakness is I am not comfortable, until I finish my work in the given time & over friendly in nature.

My Short term goal is to get the job in reputed company.

My Long term goal is to become more responsible and knowledgeable personality and on respectable position on my company.

That's all about me!

Thank you very much for giving a great opportunity to introduce my self behind you.



Thanks 

Which chemical is used to clean chimney & how to clean !Imran?

Which chemical is used to clean chimney & how to clean? By Imran

1. Remove the filters from the chimney.
2. Fill a bucket with boiling water.
3. Put 3 tablespoons of baking soda and salt and 2 cups of vinegar in boiling water.
4. Soak the filters in it for 1 to 2 hours.
5. Scrub with the scrub brush.
6. Clean it with water. And put the filters back in their place.

How to Eliminate Microbial Growth in HVAC ! Imran

How to Eliminate Microbial Growth in HVAC By Mohammad Imran.

Microbial growth in your HVAC system can reduce energy efficiency and contaminate the air in your building. This is a particular risk in hot, humid areas like Houston and along the Texas coast, but it can occur in buildings anywhere. Inside the HVAC system it is often cold, dark, and wet—providing the perfect environment for mold and other microbial organisms to grow.

How you clean and maintain your evaporator coils, and even the filter you use can affect the spread of bacteria, viruses, mildew, and mold in your system. Here are some tips to help eliminate or prevent microbial growth in your HVAC.

Keep Your Coils and Whole System Clean

Routine preventive maintenance is essential for maintaining the cleanliness and efficiency of your air handlers. Heat transfer across the coils is critical to energy efficiency. When there is a buildup of biofilm or other grime on the coils, it will reduce the unit’s efficiency and require more energy to heat and cool the building. This type of growth also harms air quality in the building, especially when it occurs downstream from the filters. Any spores or particles released into the airstream below the filters will go directly into the air you breathe.

Regular HVAC coil cleaning (at least once per year) helps prevent both microbial growth and the buildup of other contaminants that can negatively affect your HVAC system. For example, steam cleaning is effective because it uses heat to kill growth on the evaporator coils.

It’s also important to remember the drain pan under the coils. Condensation and runoff collect under the unit and need to be captured and drained out of the system, but if there is any standing water or residue, it needs to be treated. HVAC pan tablets can be applied based on the tonnage of the unit to prevent algae or other organisms from growing in this area. Without proper treatment, the drain pan can become clogged—potentially leading to spillage that can damage your system and cause microbial growth to spread.

Pure water can't conduct electricity ! Imran

Pure water can't conduct electricity
             By Mohammad Imran.

 because it does not contain ions. Because of diluting pure water with acid or a base or a salt, because they produce ions due to the dilution. Pure water does not conduct electricity.Only water can conduct electricity because it has some minerals present in it.

Cause of fire & how to prevent from fire in Air condition ! Imran

Causes



Most air conditioning fires are caused by a short circuit in the wiring that causes the appliance to overheat and subsequently ignite. Frequent power surges or fluctuation in the amount of voltage the air conditioner receives can also overheat the unit.

Considerations

Portable air conditioning units are a greater fire risk than stationary units or central air. These units are typically smaller than their permanent counterparts – making it more difficult for the unit to keep up with cooling demands. The longer the air conditioner runs, the more likely it is to overheat or suffer a mechanical failure that ultimately causes a fire.

Prevention

Routinely maintaining your air conditioning unit and having it inspected at least every 4 months will help you catch problems with the unit before those problems result in a house fire.

How volume control Dampers (VCD) is worked !Imran

The Volume Control Damper is used to control air flow in air duct. By Mohammad Imran.
                    

This unit comes with complete manual quadrant or motorized actuators. Volume Control Dampers can be manufactured with galvanized steel, stainless steel and aluminum and are suitable for the systems requiring air control. It would be easy to choose if you have a sound knowledge of the features of volume control damper. Often, the main consideration in choosing a volume damper is its size and the size of the area where it is to be located. Before searching for the perfect damper, find time to measure the room where you intend to place it

Centrifugal Pump troubleshooting ! Imran

Pump troubleshooting by Mohammad Imran

SUBJECT: The pump works for a while and then loses suction 10-12

A couple of things you must keep in mind when troubleshooting centrifugal pump problems:

• The centrifugal pump always pumps the difference between the suction and discharge heads. If the suction head increases, the pump head will decrease to meet the system requirements. If the suction head decreases the pump head will increase to meet the system requirements.
• A centrifugal pump always pumps a combination of head and capacity. These two numbers multiplied together must remain a constant. In other words, if the head increases the capacity must decrease. Likewise if the head decreases, the capacity must increase.
• The pump will pump where the pump curve intersects the system curve.
• If the pump is not meeting the system curve requirements the problem could be in the pump, the suction side including the piping and source tank, or somewhere in the discharge system.
• Most pumps are oversized because of safety factors that were added at the time the pump was sized. This means that throttling is a normal condition in most plants, causing the pump to run on the left hand side of its curve.

Impact of Low Refrigerant ! Imran

Low refrigerant



flow will also cause refrigerant-cooled compressors to overheat. Low evaporator pressure: Low evaporator pressure is caused by the compressor being starved of refrigerant. ... This lower temperature will cause a lower pressure in the condenser because of the pressure-temperature relationship at saturation.

How to replace an AC capacitor!by Imran

How to Replace an AC Capacitor

You can purchase a replacement at a hardware store. Then, it’s time to install:
1. Shut off the power to your air conditioning system at the breaker panel
2. Unscrew the side panel of your condenser unit to access the capacitor. 3. Locate the capacitor and discharge the power
4. Dismount the old capacitor and note how the wires are connected
5. Disconnect the wires carefully from the three capacitor connectors, labeled HERM, Fan, and C. Make a note or take a picture of which colored wires connect to which connector for later reference.
6. Install the new capacitor according to the manual
7. Screw the side panel back on the condenser unit.

Symptoms of bad AC Capacitor!By Imran

Symptoms of a Bad AC Capacitor.

If your air conditioner is not blowing cold air, a bad capacitor may be the reason.
However, look for the simple solutions first: Maybe you need to change the air filters, or it could be one of several other reasons.
Once you rule them out, if your unit is still blowing warm air, the issue may be the capacitor.
The most common signs and symptoms of a bad AC capacitor include:

AC not blowing cold air

AC takes a while to start once you turn it on

Humming sound coming from your air conditioner

AC shuts off on its own

AC won’t turn on

Diabetic common symptoms!By Imran

  Diabetic women and men have in common symptoms 

• Excessive thirst and hunger. D
• Frequent urination (from urinary tract infections or kidney problems)
• Weight loss or gain.
• Fatigue.
• Irritability.
• Blurred vision.
• Slow-healing wounds.
• Nausea.

Symptoms of kidney stone ! By Imran

Here are eight signs and symptoms that you may have kidney stones.

Pain in the back, belly, or side. ... Pain or burning during urination. ... Urgent need to go. ... Blood in the urine. ... Cloudy or smelly urine. ... Going a small amount at a time. ... Nausea and vomiting. ... Fever and chills

How to Prepare for an Interview !By Imran

How to Prepare for an Interview: The Ultimate Guide.

Before your interview, spend some real time on the employer's website. Dig into the job description. ... Write down the questions you're likely to be asked, and practice saying your answers out loud. Figure out what you're most nervous about being asked. Come up with questions of your own to ask.

Some common symptoms of enlarge Spleen! By Imran

enlarged spleen

No symptoms in some cases. Pain or fullness in the left upper abdomen that may spread to the left shoulder. Feeling full without eating or after eating only a small amount from the enlarged spleen pressing on your stomach. Anemia. Fatigue. Frequent infections. Easy bleeding

LG error code troubleshooting!By Imran

LG Error Code troubleshooting

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Acute pancreatitis signs and symptoms! By Imran

Acute pancreatitis signs and symptoms

Upper abdominal pain. Abdominal pain that radiates to your back. Abdominal pain that feels worse after eating. Fever. Rapid pulse. Nausea. Vomiting. Tenderness when touching the abdomen.

Common heart attack signs & Symptoms! By Imran

Common heart attack signs and symptoms

Pressure, tightness, pain, or a squeezing or aching sensation in your chest or arms that may spread to your neck, jaw or back. Nausea, indigestion, heartburn or abdominal pain. Shortness of breath. Cold sweat. Fatigue. Lightheadedness or sudden dizziness. Thanks for read this topic subscribe for new updates.

How to get Adsense account approval !By Imran

How to get Adsense account approval for BlogSpot blog:

Buy a custom domain name.

Use Google apps to create a professional email address.

Add pages like About, Contact.

Ensure you use a clean BlogSpot design.

Have at least 10-15 well-written blog posts.

Ensure you don't use copyright images.

Drain line blockage troubleshooting !By Imran

Blockages in the AC Drain Line

1. Turn HVAC system off. 2. Locate cleaning port. If the unit has turned off due to a blockage, you may need a bucket to collect the condensation resting in the drain pan. 3. Remove cleaning port cap. 4. Assess clog. If you can see the blockage, attempt to remove the blockage. Do not push it further away. Instead, attempt to lift the blockage out of the drain pipe. If the blockage breaks, separates and falls down the pipe do not be alarmed. It can be rinsed out with water. 5. Slowly pour cleaning solution down PVC drain line. If cleaning solution fills drain line, do not continue to pour solution. Follow steps in Method 2. 6. After pouring is complete, assess the blockage. If the cleaning solution does not flow out of the drain line, the blockage is still intact. This may be a sign that there is a larger block in the drain line. Follow steps in Method 2. If the pipe fills and slowly drains then repeat step 5 until cleaning solution passes without difficulty. 7. Replace cleaning port cap. 8. Turn system back on.

Rankine cycle! By Imran

Rankine cycle By Mohammad Imran

The Rankine cycle is a model used to predict the performance of steam turbine systems. It was also used to study the performance of reciprocating steam engines. The Rankine cycle is an idealized thermodynamic cycle of a heat engine that converts heat into mechanical work while undergoing phase change.

Advantages and Disadvantages of Thermal Power Plant! By Imran

Advantages and Disadvantages of Thermal Power Plant:

Advantages: Low setup and maintenance cost. It is not directly related to climate condition like hydro power plant. Large amount of coal available at earth. Easy maintenance. Less land area required. It can be installed near load center which minimize transmission losses. It can be installed near coal mines which can minimize transportation cost of fuel. Disadvantages: Low cyclic efficiency around 35 to 45 percent. It continuously generates smoke which contributes in increase air pollution. It uses consumable fuel. Operation cost is high compare to hydro and nuclear power plant. It creates large amount of ash per hour so ash handling is quiet difficult. Sometimes heated water directly drawn into river which can harm life cycle of water living.