Tag: <span>evaporator</span>

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Is your refrigerator keeping you up at night with its various moans and groans? When you need immediate relief from your noisy refrigerator, there are a few steps you can take. Follow these helpful tips from your local appliance repair shop:

• Locate the source of the noise – Is the noise coming from the inside of the freezer, or the outside back of the refrigerator? Determining what area the noise is coming from will help you narrow down the possible components that might be causing the sound.
• Troubleshoot – There are only a handful of parts in a refrigerator that typically cause noise. Once you have narrowed down the general location of the sound, you can begin troubleshooting various components to try to resolve the issue. While some issues can easily be fixed with minimal effort, others will require that you call in a professional who is trained in refrigeration repair.

Noise Inside the Freezer

Noise originating inside the freezer can typically be attributed to the evaporator fan, which runs whenever the unit is actively cooling. If you notice a chirping, squealing, or groaning sound that comes and goes (rather than being steady), it may be an issue with the fan motor. To find out for sure, open the freezer door and hold down the light/fan switch if there is one. If the sound gets louder with the door open, you can be pretty sure that the fan is the cause. Unfortunately, there is no way to repair the evaporator fan motor–you must replace the part in order to resolve the issue.

Noise from the Back of the Refrigerator

Most noises that you notice will come from the back of the refrigerator, where most of the moving parts are located. If you have a self-defrosting unit, the first place you will want to check is the condenser fan. The condenser fan is located on the back of the refrigerator, often behind a thin panel. The fan can occasionally accumulate a buildup of lint and other debris, causing a buzzing or clicking noise. You can try to resolve the problem by removing the thin cover to access the fan, and then cleaning the fan of any debris using a soft bristled brush (old toothbrushes are great for this!). Once the fan is clear of dust or other materials, replace the cover and plug the refrigerator back in. If you still have noise coming from the condenser fan after cleaning it, you may have to replace the part with the help of an appliance repair company.

If your refrigerator is making a rumbling, or purring noise from the back, it may indicate a problem with your compressor. The compressor is located in a football-sized case on the back of the refrigerator, near the bottom of the unit, and usually contains either black or copper tubes with a variety of colored wires. The compressor is typically a sealed unit, so it can not be replaced by a do-it-yourselfer. If you are able to isolate the problem to the compressor, you will need to contact a refrigerator repair technician to complete the job.

Noise from the Bottom of the Refrigerator

If you have noise emanating from the bottom of your refrigerator, it is likely coming from one of two places. The first, and easiest to resolve, is rattling from a loose drain pan. To fix this issue, simply tape the pan securely in place to stop the noise. If that doesn’t work, you may have an issue with the defrost timer. The defrost timer is located in the front of the unit, behind the kickplate. This part is actually a heating element located on the evaporator coil and can not be repaired. If you are experiencing trouble with the defrost timer, you may also notice a buildup of frost in your refrigerator or freezer. To have this component replaced, you should contact an experienced professional for installation of the refrigerator repair part.

When to Contact the Professionals

If you complete the above steps and still can’t determine where the problem is coming from, or if you need to replace a complicated part such as the compressor or defrost timer, you should contact your

local appliance repair service. In addition to providing you with thorough troubleshooting and safe, reliable repairs, most refrigerator repair technicians also offer routine maintenance, which can help you avoid problems down the road. With their help, you’ll be able to sleep soundly without being interrupted by strange kitchen noises well into the future.

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Source by Maria Allen

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Routine repairs of air conditioners have become a common occurrence in most homes and offices especially at the start or during the summer season when temperatures are generally higher. For most people, this man made invention is the only thing that keeps life bearable during hot weather, so they do not mind spending large amounts to pay for air conditioning repair. Getting a basic understanding of the working principles and regular maintenance can help you save some good money every year.

Usually, there are two key areas technicians work on when they perform these repairs and they include the condenser and the evaporator units. For split AC units, you will usually find the condenser unit located outside of the house while the evaporator will be located in the unit placed in the house. These two pieces of equipment have to be tuned or maintained regularly in order to save costs on repairs. A renowned technical study has shown that air conditioners lose about 5% of normal efficiency every year without regular maintenance procedures.

To prevent high costs on your routine summer repairs, take advantage of special prices usually offered by technicians during spring and fall. Note that some air conditioners can also be used as heating units, so winter is not the best time for low prices. This is due to the fact that the AC technicians are usually busier during seasons of extreme weather. Generally, the servicing will include activities like belt adjustment, coolant level checks, checking for leaks and cleaning the air filters etc.

One other good way to save money on unplanned fixes is by understanding the DIY aspects of these repairs, so that you do not have to call the technicians every time something occurs. During the annual maintenance exercise, observe the different activities performed by your technicians and ask a few questions. You can also read through DIY websites to determine steps you can perform. However, ensure that the power source is completely switched off at all times before you attempt any repairs or checks.

Finally, ensure that the coolant level and piping system of your air conditioner is checked at least once every year or before any repair is made to other components. If the coolant level is low, the pipes must also be checked for leakage before more coolant is put in; else, you will have to spend more money to get more coolant after the leakage is fixed. Just think about it using this mindset; pay a little now to get the technicians to service your unit rather than paying so much more every summer to keep the unit running.

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Source by James Memije

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We often call professionals that provide industrial electronic repair to get our appliances repaired and our split air conditioner is one of them. Every year thousands of people call to inquire about the electronic parts and services regarding their split AC. Global warming is on a new high and long gone are those days when winters actually used to be long. This has ultimately made us more dependent on our beloved split ACs and the pressure on these sophisticated electronic appliances has all the more increased.

Split Air Conditioner Tips

To ensure the smooth functioning of your split AC you need to take care of its proper maintenance. By following the points given below one can easily add a few more years to their split AC.

1. The filter is a quintessential part of an AC and must be changed every month or after every two months depending upon the use. As the name implies, the air filter filters out the air and separates dirt and pollutants from it. Changing the air filter periodically will ensure that the air you are breathing when the AC is switched on is void of any pollutants. Moreover, it lowers maintenance cost significantly.

2. Just like the filter, AC’s compressor is another important part. It helps to compress low pressure and low volume gas into a high pressure and high temperature gas that’s needed by the AC for its functioning. It also helps to remove vapour from the evaporator so as to maintain a low boiling point. Cleaning the compressor on a regular basis will give you cool and refreshing air for a long period of time.

3. While passing through the air conditioning system the air also passes through the evaporator coil. This coil absorbs all the heat from the air so as to provide cold, fresh air in the space. If you are getting warm air from your AC, there is a high probability that your AC’s evaporator coil might not be functioning properly. Replacing this coil with a new one can certainly improve air flow and its circulation in the home.

4. All air conditioning systems use some sort of refrigerant as a part of their machinery so as to absorb excess heat and contribute in the supply of cold air in the house. However, at some point of time in its life your AC might experience a refrigerant leak. Hence, a reliable company that provides industrial electronic repair solutions regarding air conditioners should be called-in immediately to repair that part.

5. Proper air conditioning maintenance must include regular cleaning of all those air ducts from which the AC is able to provide fresh, cold air. In an air conditioning system, air ducts are generally spread throughout the house so as to keep the entire area cool and pleasant. Hence, the ductwork present in the AC must be cleaned on a regular basis so as to remove all sorts of dust and dirt present on air ducts.

Maintenance cost of both – window and split air conditioner is generally the same, hence it does not matter which AC you use as maintenance is vital for both of them.

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Source by Geoff Child

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Heating and air conditioning, (HVAC) systems consist of many mechanical and electronic components including compressors, pumps, fans, pipes, thermostats, etc. These are delicate appliances and needs proper care and maintenance. Central heating and cooling systems are more prone to failure as they stand the extreme weather conditions. This is the reason, an expert technician is always needed in order to repair, maintain, diagnose, as well as correct the severe problems throughout the system.

Experienced plumbers and HVAC technicians offer comprehensive services for:

1. Compressors

2. Evaporator Coils

Compressors

In AC units, the compressor is the prime component and serves big functions. Its main function is to squeeze the refrigerant that comes to the compressor as a cool and low-pressure gas. The compressor in turn envelops the molecules of the fluid close together. The process of squeezing of molecules together enhances its underlying energy as well as temperature and the working fluid leaves the compressor as a hot and high-pressure gas.

In central air conditioning systems, it is located in a separate box outside the home comfort. If your air conditioner running continuously, but fail to cool or maintain the inner temperature the problem persist in the compressor. Therefore, it is necessary to keep your compressor clean and clear. Expert plumbers can perform the task and clear away any leaves, herbs, mud, debris, grass clippings or dust particles and rinse it off with a hose. It will clean the compressor and make it more efficient. Plumbers also clean the aluminum fins present inside the component.

Evaporator Coils

It is an integral part of the air conditioning unit, which pulls heat out of your home’s atmosphere. Its main part is to allow the liquid to evaporate arriving from the compressor, which extracts heat from the surrounding home air and eventually lowers the air temperature inside.

For your air conditioning unit to work smartly and efficiently, it’s vital to keep these evaporator coils clean and clear. Plumbers and expert HVAC technicians change the filter frequently. They also inspect your air conditioner in order to identify whether your evaporator coil needs a more thorough, professional cleaning.

Specialists also diagnose other components of the system including thermostat, air handlers, furnaces, heat pumps and provide vitally essential HVAC tips to the people. They provide energy saving tips, annual air conditioning and heat pump maintenance programs and regular repairing services to the keep the system efficient, smooth and trouble-free. For complete peace of mind they tend to offer necessary services including heater and furnace repairs and installation, HVAC installation and repair and air conditioning system design.

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Source by Alfred Gordan

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So, you have never heard about spot cooling before? Then, trust us that you have missed something very useful and effective when it comes to make a hot place cooler.

A spot cooler is a sort of portable, standing ventilating/air conditioning unit. It is an independent framework, which implies its primary components, similar to the fan systems, and vents, compressor unit, evaporator unit, and others are incorporated and installed in one completely protected cabinet that is either made of metal or plastic.

What is Spot Cooling? We can say that spot cooling is the process of cooling a targeted or specific space using smaller, compact, and portable air conditioning system. Despite the fact that anyplace is good for spot cooling, the areas that most perfect for this sort of ventilation and cooling are usually enclosed spaces where comfort must be kept up or where the temperature must stay steady and adjusted, for example, an industrial area.

How Does A Spot Cooler Work?

The spot cooler works as an air conditioning system, and therefore follows the normal air conditioning procedure, which is basically the expulsion of heat through heat transfer or heat exchange, and dehumidification process to expel humidity.

Check out the way how a spot cooler works.

• It absorbs the warm air from inside the area through the assistance of the refrigerant. For this situation, the refrigerant gets pressurized with the assistance of the compressor, and then gets evaporated at a low pressure that enables it to absorb the warm air.

• Then, the refrigerant gets transformed into a hot fluid from a hot gas state.

• The hot refrigerant in fluid travels to the condenser where the heat gets depleted and is discharged outdoors through the vents of the unit.

• Then, the refrigerant, which is currently a sub-cooled fluid yet at the same time, stays extremely hot, goes to the evaporator. This flow of the fluid refrigerant reduces through the metering device.

• The fluid refrigerant starts vaporizing when it comes to the coils of the evaporator and transforms into cool gas.

• Then, this cool air is dispersed in the room, industrial area, or any other place through the tubes while the hot air is regularly evacuated through the vent.

• The process keeps on repeating until the point when the set temperature is reached.

The Accessories Of A Spot Cooler

Beside the fundamental internal segments, similar to a fan system, evaporator, compressor, and condenser, a spot cooler normally comes with these accessories:

• Air filter

• Air pipe seat covers

• Screws

• Water tank

• Drain pipe

• Cold air pipe

• Cold air pipe bend

• Hot air exhaust pipe

• Hot air exhaust pipe seat

Remember, spot cooler is quite often used as an industrial cooler so there might be a few more accessories required and different coolers come with various types of accessories.

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Source by Jessie Cooper

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Few things are more frustrating than buying something new that doesn’t work. A significant financial investment like an air conditioner definitely should not be that way. There are key points to keep in mind when buying an air conditioner, and yes, you need to maintain it too. So if you have a fairly new air conditioner (less than a couple years old), read on for the reasons why it may not be working too well.

• Too big. A unit that is too large will not remove humidity well.

• Too small. A unit that is too small will not get your home cool enough on the hottest days.

• Improper installation. Customers should pay attention to duct installation, unit location, and insulation amount.

• Low energy efficiency ratio. An air conditioner model with high efficiency is important. At minimum, air conditioners need to have a seasonal energy efficiency ratio (SEER) of 13. Higher SEER ratings will equal greater savings. Look for an Energy Star sticker that gives the energy efficiency rating or calculate the rating yourself by dividing the watt rating into the BTU.

• Dirty filter. Don’t forget to clean or replace your air conditioner’s filter. Dirty filters block air flow and will reduce your air conditioning system’s efficiency greatly. Air that does get through may carry dirt to the evaporator coil and limit the coil’s heat-absorbing ability. Some filters are reusable while others must be replaced. Filters should be cleaned or replaced every 1-2 months, when using the air condition often. Filters may need to be checked even more frequently if the air condition is on constantly, the house is dusty, or there are pets in the house.

• Dirty evaporator coil. Even with a clean filter, the evaporator coil will still collect dirt, just not as fast. The evaporator coil should be check every year and cleaned as necessary.

For those with old air conditioners (from the 1970s and earlier), save energy by getting a new air conditioner as today’s most efficient air conditioners use 30% to 50% less energy to produce the same amount of cooling as air conditioners from the 1970s.

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Source by Ryan Corey

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HVAC is meant for heating, ventilation and air conditioning. The goal of HVAC is to control the temperature of air inside the assigned “Air conditioned” space as well as control of moisture, filtration of air and supply of outside natural air for control of oxygen and carbon dioxide levels noticeable all around the conditioned space, main control of the development of air or drought. Every one of these elements comprises an efficient HVAC system.

Main Parts of the HVAC

Every HVAC system mainly consists of the furnace, heat exchanger, evaporator coil, condensing unit, refrigerant tubes, thermostat, ductwork, vents and the heat pump.

Importance and duty of each part of the HVAC are mentioned below.

1. The furnace: The furnace takes up a maximum share of the space in an HVAC system. It is generally present in the basement behind a door that nobody ever opens, yet it’s a major part of an HVAC system. Its function is to move air from the heat exchanger into the air channels(ducts). The furnace is typically confounded with boilers, yet they’re separate parts.

2. The heat exchanger: This part is mentioned above but it’s not the part of the furnace. It’s situated inside the furnace, yet the heat exchanger has its own duty. It adds heat to the approaching air from the ignition chamber.

3. The evaporator coil: This part is additionally present in the furnace, yet is responsible for an absolutely different job. A refrigerant (a liquid that causes cooling) travels through the evaporator coil, which ingests heat from air passing over it.

4. condensing unit: The condensing unit resembles the evaporator coil. Inside the cube shape formed unit, the condensing unit too exchanges heat with the air that is blowing it, yet dissimilar to the evaporating coil, it emits heat.

5. The refrigerant tubes.: These metallic tubes interface the evaporator curl with the condensing coil, which generally means that the refrigerant tubes join the inner and outer air HVAC units. They’re intended to contain cooling refrigerant under an extensive range of temperatures.

6. The thermostat: This small portion generally on the wall on the main level of the home, and, depends upon what temperature you set it at, you can turn on your air conditioning or heating system. It’s best to have a programmable or “smart” thermostat to adjust your home’s temperature regardless of the possibility that you’re not there, which implies that you can minimise your energy bill.

7. The ductwork: The air ducts are having the duty of moving air all through the home. Air comes into an HVAC system through specific segments of the ductwork and is spread to rooms through different areas.

8. The vents: As the air goes through the ductwork, it enters into the room through vents. Users know about the rectangular covers that immediate and take air.

9. The heat pump: In hotter months, the heat pump takes heat from house or room to the outside. And in the colder months, it does the inverse.

All the HVAC systems consist of the parts mentioned above, and each of the mentioned components relies on the others to function in the proper manner and efficient way.

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Source by Ankur Choudhary

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If your fridge is not cooling for some unknown reason, you can follow this step-by-step guide to detect the problem and fix it yourself. The process is quite simple and can be done using a few simple tools.

Required Tools

• Ratchet/socket set
• Write cutter/stripper

Required Materials

• Condenser/Evaporator Fan

Problem:

When a fridge fails to keep your ice cream frozen or milk cold, know that there can be different causes. Before you follow advanced techniques, we suggest that you try a few easy fixes first.

• Make sure that the unit is plugged in and the light turns on upon opening the door

• Check the fridge thermostat to ensure it’s working

• The backside vents should not be clogged with frozen veggies or ice cream boxes.

• Use a vacuum cleaner to vacuum the coils as clogged coils may be the culprit

• The condenser fan should spin freely and shouldn’t be stuck. All you need to do is unplug the appliance and pull the condenser out. Also, clean the blades of the fan and rotate it by hand to see if it’s operational. Put it back, turn on the fridge and see if it runs fine.

How to Replace the Evaporator Fan

Follow the steps given below:

Remove the Cover

First, take off the cover to take a look at the evaporator and get access to the evaporator fan.

Remove the Fan Cover

If there is a fan cover, you can remove the screws to get access to the fan.

Remove the Evaporator Fan

If you are sure that the fan doesn’t spin or makes noise, you should replace it. First, power off the fridge and remove the screws.

Replace the Fan

Put a new fan in place of the old one. Use the mounting bracket of the damaged fan on the new one. Unplug the wires and attach them to the brand new fan. Lastly, replace the cover.

Replace the Condenser Fan

Unplug the fridge and remove the panel on its back. Now, you can reach the condenser and compressor fan. Your next move is to turn on the fridge and wait for a few seconds to let the compressor turn on.

Make sure the fan is also working. if the compressor works but the fan fails, get a new fan. Now, if none of the things work and compressor seems too hot, power off the unit and point a pedestal fan at the compressor.

Now, wait for a few minutes to let the compressor cool down and make an attempt. If the fan doesn’t work, you need to replace it. If neither the fan nor the compressor runs, you need to get a new compressor relay. In this case, you need to get in touch with a technician.

When should you Replace the Condenser Fan

You can replace it if it won’t run or makes a lot of noise. You may need to remove the bracket to take off the fan.

Install the Brand New Fan

Near the old fan, you will see a few wires. Cut them and connect the brand new fan using quality wire connectors. Attach the new fan and check again.

So, if your fridge is not cooling, you can try out these tips to fix it.

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Source by Shalini M

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Even though standard air conditioners are everywhere, they tend to use a lot of energy and generate quite a lot of heat. They can be hard to maintain, especially in large installations like commercial buildings and office spaces.

Chilled water air conditioning systems are particularly great for large spaces like schools and hospitals because they’re cost-effective and contribute to indoor air quality. These systems use chilled water as part of the cooling process and absorb heat from indoor spaces.

In this article, we’ll take a look at how chilled water air conditioning systems work.

How Does It Work?

A chilled water system is where the entire air conditioning unit is either installed behind the building or on the roof. Once the water is cooled, it’s connected to air handlers and piped throughout the space.

Chilled Water System Components

Evaporator Cylinder

The evaporator cylinder is where chilled water is produced that’s used for air conditioning. The water exits the evaporator cylinder when it’s around 45 degrees F and moves up into the riser so it can travel to the air handing units on different floors of the building.

Air Handling Unit

The chilled water moves through a coil as it enters the air handling unit. It absorbs the heat from the indoor air and releases cooler air that is circulated throughout the building. Once it flows out of the coil, it’s about 55 degrees Fahrenheit. The warmer water then flows back to the evaporator to get cooled again.

Condenser Cylinder

A refrigerant cycle is what connects the evaporator to the condenser cylinder and ensures that the heat keeps flowing out of the evaporator and into the condenser. The two water lines don’t interact with each other. The condenser water which happens to be warm moves up into the riser from where it travels to the cooling tower that’s located on the roof of the building.

Cooling Tower

The cooling tower is where the warm water is cooled again using fans that pull in ambient air to absorb the heat from the water and release it into the atmosphere. Once the water has cooled off a bit, it flows back to the condenser cylinder.

Fan Coil Units

The chilled water is then piped into fan coil units that contain fans and fins. These fans absorb heat from the atmosphere via the air-heat exchange process. Each fan coil comes with its own thermostat that’s used to regulate the amount of cooling required for the application.

While cooling the space, the water temperature rises up by 10 degrees Fahrenheit and returns to the evaporator where it’s cooled off again before it’s pumped back into the fan coil units.

Chilled water systems are ideal for cooling medium and large spaces. Even though the upfront cost can be quite a bit, lower maintenance costs and higher energy efficiency make up for it. They’re available in various sizes and designs for different applications.

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Source by Mike Petty

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Water Cooled Scroll Chillers is a refrigerating system used to cool fluids and dehumidify air of the surrounding. Working same as that of Air Cooled Chillers, the Water Cooled Scroll Chillers also follows the same basic principles of evaporation and condensation. These water cooled scroll chillers are used in wide varieties of industrial as well as commercial setups. Highly efficient and easy to install, these Water Cooled Scroll Chillers are ideal for any Hotels, Hospitals or industries etc. Various prominent air conditioning companies like Bluestar, Daikin’s, Voltas, Carriers also manufactures there own industrial water chiller, water cooling coils etc.

Structure:

A single closed unit of water Cooled Scroll Chiller consists of an Evaporator, Condenser, Compressor, and an expansion valve. The evaporator is the primary point of initiation. Here the reservoir is filled with water or water-mix for re-circulation. Evaporator with the help of bundle of tubes surrounds the Central Chamber. The Central Chamber is then connected to the Compressor, in this case, we are talking of Scroll Chillers using Scroll Compressor. Scroll compressor also is known as Spiral Compressor because of its very design. Whereupon the compressor connects to the condenser which is again connected to the evaporator to repeat the cycle. These are the basic elements and structure of Water Cooled Scroll Chiller.

Difference between Air Cooled Chillers and Water Cooled Chillers?

The functioning of both the Air Cooled Chillers and Water Cooled chillers is similar. Both consists of an Evaporator, Compressor, Condenser and an expansion valve. The major point of difference lies in the fact that one uses Air to fuel condenser cooling whereas the other uses Water.

This major difference of using water instead of Air is also a point of advantage for the water Chillers as the wet surface is more efficient in transferring the heat when compared to the Air Cooled Chillers.

How do water cooled scroll chillers work?

The process is initiated by filling the reservoir with water or water-mix for circulation. The cycle begins in the Evaporator where the liquid refrigerant flows over the evaporator bundle of tubes and evaporates. It also absorbs heat from the chilled water circulating through the bundle. As soon as the water reaches enough high temperature it starts radiating the heat back to the refrigerant in the evaporator resulting in vapours. with the help of a pipe or a tube, this vapour is made to pass through the compressor. Here the scroll Compressor using its unique spiral design and two interleaving scrolls to pump, compress and pressurize fluids. The most unique feature of Scroll compressor is its ability to be quiet, it works great in the sound sensitive environment. It has a sound pressure level as low as 72 DBA. The compressor then starts raising the temperature of the Condenser by way of pumping the refrigerant vapour to the condenser. The refrigerant condenses on or in the condenser tubes, giving up its heat to the cooling water. It is this high-pressure liquid refrigerant is then made to pass through an expansion device that reduces the refrigerant pressure as well temperature as it enters the evaporator. The refrigerant again flows over the chilled water coils absorbing more heat and completing the cycle.

The market is flooded with options when it comes to industrial Water Chillers and its manufacturers. Almost all the prominent Air Conditioning companies are in the field of manufacturing and rendering their services in this sphere too. Each industrial Chiller would also require maintenance and services after a certain set of the period. This industry doesn’t only cater to the demands of their clients but also cater their services in order to make optimum use of the technology.

Source by Mistcold

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Source by Ranjeet Singh