How the Digital Inverter Compressor Has Transformed the Modern Fridge.For decades, Refrigerators or Fridges  had single-speed compressors that were always either off or on. A compressor is the engine that powers the refrigeration cycle, moving refrigerant through the inner and outer heat exchange pipes. With a single-speed compressor, when the temperature inside the fridge reaches above a certain temperature, the compressor suddenly switches on – a noise almost everyone is familiar with. The single-speed compressor operates at full power, producing enough cool air until the temperature has sufficiently decreased before abruptly shutting off.

Enter the digital inverter compressor (a compressor that can operate at variable speeds because it is operated with a digital inverter). Unlike the standard single-speed compressor, which is either off or operating at full speed (typically about 3,600rpm), the digital inverter compressor is almost always on, but can operate at different speeds – from 1,100 to 4,300rpm. This ensures high efficiency and consistent temperature inside the refrigerator. It also results in significant cost savings, a reduced carbon footprint, less noise and a longer lifespan for the compressor. The digital inverter compressor is one of the most important innovations in the history of Fridges and food preservation and Samsung has led the way.

Today, digital inverter compressors are the main technology used in Samsung’s signature appliances eg, air conditioners, washing machine & Fridges, including those that are part of the Chef Collection, the T9000, as well as food showcases and large-capacity premium Fridges. This has played no small role in Samsung’s ascent to become the world’s top refrigerator manufacturer.

In addition, Samsung has become a technical leader, as one of the world’s top manufacturers of this game-changing technology. Samsung produced more than 40% of the world’s digital inverter compressors in 2014 as other major manufacturers now use Samsung’s superior compressors in their Fridges.

Samsung really began its rise in this area in 1999 when the company pushed investment in BLDC (brushless direct current) inverter compressors. Since then, Samsung has continued to expand its investment in research and development, hiring a highly skilled team of researchers, which has enabled the company to remain on the cutting edge of technology. From 2000 to 2014, Samsung sold a total of 27.5 million BLDC inverter compressors, which are highly efficient and less noisy compared to a single-speed induction motor compressor. BLDC motors are also better in terms of reliability and longevity. The current Chef Collection refrigerator employs a fifth generation technology of BLDC inverter compressor.

The benefits are obvious. A fridge with a Samsung digital inverter compressor consumes up to 46.9% less energy than a single-speed induction motor compressor, and thus contributes far less in the way of greenhouse gases. Because the digital inverter compressor gradually speeds up and slows down, it does not have to work as hard to manage the temperature. This means that Fridges with digital inverter compressors suffer less wear and tear on components and are therefore far more durable than fridges with conventional compressors. This has allowed Samsung to offer a 10-year warranty on its digital inverter compressors.

The lack of abrupt starts and stops means no sudden, potentially startling disruptive noises interrupting your dinner. Digital inverter compressors are also far less noisy overall: up to 3 decibels quieter. And the consistent, uniform cooling that maintains the desired temperature means food lasts longer because changes in temperature can lead produce, meat, fish and dairy to spoil more quickly. It all means that consumers will save money on both their electric bills and food costs.

When Samsung sought input from its highly influential group of culinary experts, also known as the Club des Chefs, they emphasized that temperature uniformity is a crucial component of any fridge that may be used in a Michelin-starred kitchen. Chef Collection Fridges boast “Chef Mode,” which ensures that the temperature fluctuates no more than plus or minus 0.5 degrees celsius. The Chef Collection refrigerator is equipped with three evaporators and two compressors to control humidity. It is also made of stainless steel panels, which help to keep the temperature consistent.

These Digital Inverter technology based appliances are best used with solar power options for 2-5 bedroom homes from Nocheski


We’ve just added two Bluetooth enabled Inverters to our range. The new-build Victron Energy Phoenix Inverter Smart models are rated at 1600VA and 2000VA and we have models for 12V, 24V and 48V systems.

  • Dynamic cut-off/intelligent restart
  • We’ve added  48V models to the range
  • Bluetooth communication – allows easy set-up and monitoring on your phone, laptop or smart device
  • Slimline design allows for discreet wall-mounting
  • Eco mode

Bluetooth …and VE.Direct

Bluetooth has been built in to the Victron Energy Phoenix Inverter Smart – allowing your power consumption to be monitored, or the settings changed, straight from your phone, tablet or laptop via our VictronConnectapp – which is free to use. Victron Energy Phoenix Inverter Smart also has a VE.Direct communication port allowing wired connection to a tablet or laptop via an optional VE.Direct to USB cable. The unit can then be set-up and programmed using VE Configure software.

Built in Bluetooth allows you to view live data on your mobile phone, laptop or smart device via our VictronConnect app – which is free to use.

Dynamic Cut-off

Your battery is protected by a user-defined low voltage alarm.

The alarm will be followed by an automatic cut-off – the value of which is Dynamic: For example, if the inverter is providing a lot of power at the time a low-voltage condition is detected, the unit will perform its disconnect at a lower battery-voltage than if it were providing only a modest amount of power. When only a modest amount of power is being drawn, cut-off will take place immediately a low-voltage condition exists. See the Manual for full details.

Intelligent re-start

A cut-off will be followed by three intelligent restart attempts. If the cut-off was triggered by a sudden but temporary drop in voltage, the load will be reconnected. A thirty-second delay ensures that the increase in voltage which has been detected is enduring.

ECO mode

In ECO mode some Victron Energy Phoenix Inverter Smart units consume just 0.6 watts – so they can be left in ‘standby’ for extended periods without worrying about the battery running down between jobs. ECO mode is intelligent, too: When the power being provided by the device falls below a certain value – it will automatically enter standby mode. As soon as it detects a load above a preset ‘snooze’ limit, the unit will remain on, to power this new demand.

LED diagnostics

Similarly to its predecessors, the Phoenix Inverter Smart is equipped with ‘traffic-light’ LED’s – the behaviour of which relate to the Inverter’s current ‘status’ – providing you with information concerning which mode the unit is in, whether any alarm conditions exist, or if an automatic trip has taken place. In depth information can be found in the manual. Bluetooth connection to your smart device provides deeper analysis.

The Victron Energy Phoenix Inverter Smart – which weighs around 12kg – can be tidily installed in an out-of-the-way location, thanks to its slim profile, and sturdy mounting plate. But if it’s tucked away – what about reaching it …to turn it on and off? No problem – a remote on/off switch is available.

 

Summary

True Sine Wave power output can be used for sensitive electronics such as computers; and it’s Peak Power capability – of around twice its ‘continuous’ rating – will supply the inrush current typically drawn by workshop tools such as drills, jig-saws, sanders and LED lamps. It can continuously power all the comforts of home – such as Microwave cookers, vacuum cleaners – even pressure washers.

Phoenix Inverter Smart continues to use ultra-reliable ‘full bridge’ configuration and toroidal transformer topology – all housed in a stainless steel case – to provide years of worry-free service.

Phoenix Inverter Smart is a protected against short-circuit, and overheating.

Inverters for every requirement

We have  Inverters, and Inverter/Chargers for every possible requirement – from compact 175W models to 144kW – configurable for 3-Phase; Multi source AC; and even for Assisting Grid-Power. In Ghana call +2332442700092  or visit our facebook page  to find the right Inverter for you.


Ghana:How Fronius saves businesses Ghc 24,000 per annum on electricity.The conversation was getting heated and it ended with the statement “Diesel Generators are cheaper than the Electricity Company of Ghana (E.C.G) and some businesses in Ghana run on generator power even when the grid is available”……………………..

The reality of Ghana’s power situation

This was what I learnt from a conversation I had in 2014 with an associate of mine who ran a medical practice in East Legon at the time.I was actually doubtful of his claims because of his political affiliation and therefore brushed these claims aside.

Whilst Ghana appears to have recovered, somewhat, from the power crisis, many businesses are, ironically, turning to generators which they find to be cheaper than the national grid. Fast forward to 2017 ,whilst running several power audits across Ghana ,I  come across several businesses who run on diesel generator power 2-3 times weekly as a cost cutting strategy for electricity. Some of these business claim to be able to save up to 25% on power costs by this strategy alone.

With Ghana’s prepaid metering system, it’s easy to compare how much is spent on either generators or the national grid on weekly or even daily basis .The bare facts are that  that solar  has gotten cheaper today than it was years ago and with an average 5.5 hours of effective sunshine daily in Ghana, businesses  should seriously consider quality Grid-tied solar power systems such as Fronius .With these solar power systems you don’t need to even worry about rising utility tariffs  or fuel prices.

Ghana :How Fronius saves businesses Ghc 24,000 on electricity

A grid-tie solar installation ,showing solar panels on the roof of a Guesthouse in Ghana

Most Ghana based business shy away from Solar power because of the perceived high initial costs. Grid-tied solar often has fewer upfront costs than an off-grid system. For one, it can cost less to install a grid-tied system because it does not require batteries, as off-grid does. For another, it’s more flexible, as you don’t necessarily have to install the number of panels you will need to produce all your energy needs right away. people choose grid-tied solar power  systems when they know they could only afford a certain number of panels at a given time, so their goal is to lower their electricity bills—but not eliminate them entirely just yet.

Grid-Tie Research Findings

A fully installed 20Kw Fronius Grid-tied solar inverter in Accra-Ghana

Over time, you can always add more panels as you find the financial resources to do so.This solar power option is excellent  for  commercial operations that have a high power demand during daytime hours.Up to 65% percent of power demand for most offices in Ghana is for air-conditioning /cooling due to high daytime temperatures  and humidity.  Our research indicates that grid tied solar can be at least 45% cheaper than off grid solar power systems and you can save Ghc 24,000 per annum by the deployment of just 10kwp. We are able to calculate the savings because of the inbuilt monitoring systems in these intelligent devices built by Fronius BV of Austria.

Nocheski Solar is dedicated to using products  that have a strong, unrivalled reputation for technical innovation, reliability, and build quality. Our products are widely considered to be the professional choice for independent electric power.You may call +233244270092  email for further information


Inverter Air conditioners & the rising electricity tariffs in Ghana

My Nigerian friends often say Ghanaian folk have a signature look, very dark skin and red eyes. This they claim is as a result of the scorching sun in Ghana. Ghana is hot o…….

Average temperatures often range between  35-40 degree Celsius with high levels of humidity . Due to the nature of the weather in Ghana Air-conditioning is no longer a luxury.Most homes and offices who can afford , have invested in one form of cooling or the other while those who cant have settled for fans.But what happens when there is erratic power supply and load shedding  AKA Dumsor  in Ghana? I bet that is another topic for another day.

little children cooling off in bowls of water at home on a sunny day in Accra,Ghana

Recent electricity price hikes in Ghana have made Air Conditioners a pain point for most who are concerned about their electricity bills. Electricity bills increase significantly when an air conditioner is added to the list of appliances in a household. Although it is difficult to significantly reduce the “big” impact of an air conditioner on your electricity bills, it can be managed by choosing the right technology. Also by following the right installation/maintenance/operation procedure and also putting into consideration the insulation of room where the air conditioner is being operated.

The latest and the most efficient technology that is available on market today is the Inverter Technology for air conditioners. Inverter technology is designed in such a way as to save 30-50% of electricity (units consumed) compared to regular air conditioning systems.At Nocheski ,we live up to our promise of driving your business with technology and we recommend the use of energy efficient appliances such as inverter Air-conditioners from brands including LG,Daikin,Carrier Samsung , Gencool, Hisense just to name a few.

How do air conditioners work?

For most people, air conditioner just throws cool air at the temperature one sets it at. But does it really work that way? In principle, an air-conditioner during the cooling process, takes the indoor air, cools it by passing it through evaporator and releases it back in the room. It is quite opposite to how our good old air coolers used to work. Air coolers used to take outside air, cool it with water and throw it in. But air conditioners just work on internal air. Along with evaporator an air conditioner also has a compressor that compresses the gas (refrigerant) in the AC to cool it that in turn cools the incoming internal air from the room.

In a regular air conditioner:

The compressor is either off or on. When it is on, it works at full capacity and consumes the maximum electricity it is designed to consume. If the thermostat reaches the temperature level set in the AC, the compressor stops and the fan (in AC) continues to operate. Then the thermostat senses that the temperature has increased, the compressor starts again.

Air Conditioners with Inverter Technology

The inverter technology works like an accelerator in a car. When compressor needs more power, it gives it more power. When it needs less power, it gives less power. With this technology, the compressor is always on, but draws less power or more power depending on the temperature of the incoming air and the level set in the thermostat. The speed and power of the compressor is adjusted appropriately. Originally developed in Japan for use in air-conditioning systems, digital inverter technology is now applied globally in appliances such as refrigerators, washing machines and even microwave ovens.

Samsung has a new line-up of household appliances ,digital inverter air conditioners,fridges, etc for the digital home that saves on cost and offers more features.

Samsung has a new line-up of household appliances for the digital home that saves on cost and offers more features.

What is benefit of Inverter Technology?

Air conditioner is designed for a maximum peak load. So a 1.5hp AC is designed for a certain size of room and 1 hp for a different size. But not all rooms are same . A regular air conditioner of 1.5hp capacity will always run at peak power requirement when the compressor is running. An air conditioner with inverter technology will run continuously but will draw only that much power that is required to keep the temperature stable at desired levels.  Hence Automatic adjustment of capacity based on the requirement of the room it is cooling and so requiring less electricity for efficient operation although air conditioner with Inverter Technology adjusts its capacity based on the room requirement, it is very important to install a right sized air conditioner in a room.

Its important  that you evaluate the room and air conditioner capacity before you make a purchase.Moreover digital inverter technology appliances such at home further increases the business case for installing solar for home.This as a result of highly reduce electrical load. Check out our off-grid solar  offers for 2-5 bedroom homes .For further clarifications on this subject ,you may contact our product specialist in Tema  here


Air Conditioners are a pain point for most people in our country who are concerned about their electricity bills. The moment an air conditioner is added to the list of appliances used in a household, the electricity bills increase significantly. Although it is difficult to significantly reduce the “big” impact of an air conditioner on your electricity bills, but still some of it can be managed by choosing the right technology, doing the right installation/maintenance/operation and by doing the right insulation of the room where the air conditioner is used.

ACINVERTERTECHOLOGYWhen it comes to technology, there were not many available in the past. When BEE actively started analyzing and labeling the air conditioners, we got some good one in form of 5 star air conditioners. The latest and the most efficient technology that is available in market today is the Inverter Technology for air conditioners. Inverter technology is designed in such a way that it can save 30-50% of electricity (units consumed) over a regular air conditioner.

How does an air conditioner function?

For most people, air conditioner just throws cool air at the temperature one sets it at. But does it really work that way? In principle, an air-conditioner during the cooling process, takes the indoor air, cools it by passing it through evaporator and throws it back in the room. It is quite opposite to how our good old air coolers used to work. Air coolers used to take outside air, cool it with water and throw it in. But air conditioners just work on internal air. Along with evaporator air conditioner also has a compressor that compresses the gas (refrigerant) in the AC to cool it that in turn cools the incoming internal air from the room.

In a regular air conditioner:
The compressor is either off or on. When it is on, it works at full capacity and consumes full electricity it is designed to consume. When the thermostat reaches the temperature level set in the AC, the compressor stops and the fan (in AC) continues to operate. z_pv-LGWhen the thermostat senses that the temperature has increased, the compressor starts again.

Air Conditioners with Inverter Technology

The inverter technology works like an accelerator in a car. When compressor needs more power, it gives it more power. When it needs less power, it gives less power. With this technology, the compressor is always on, but draws less power or more power depending on the temperature of the incoming air and the level set in the thermostat. The speed and power of the compressor is adjusted appropriately. This technology was developed in Japan and is being used there successfully for air conditioners and refrigerators. This technology is currently available only in split air conditioners.

What is benefit of Inverter Technology?

Every air conditioner is designed for a maximum peak load. So a 1.5hp AC is designed for a certain size of room and 1 hp for a different size. But not all rooms are of same size. A regular air conditioner of 1.5hp capacity will always run at peak power requirement when the compressor is running. An air conditioner with inverter technology will run continuously but will draw only that much power that is required to keep the temperature stable at the level desired. So it kind of automatically adjusts its capacity based on the requirement of the room it is cooling. Thus drawing much less power and consuming lesser units of electricity.

Although air conditioner with Inverter Technology adjusts its capacity based on the room requirement, it is very important to install a right sized air conditioner in a room. Please make sure that you evaluate the room and air conditioner capacity before you make a purchase. Keep watching for this space as we are in process of creating a comparison for electricity savings in various air conditioners brands.