Biomass gasification power systems have followed two divergent pathways, which are a function of the scale of operations. At sizes much less than 1MW, the preferred technology combination today is a moving bed gasifier and ICE combination, while at scales much larger than 10 MW, the combination is of a fluidized bed gasifier and a gas turbine.
Larger scale units than 25 MW would justify the use of a combined cycle, as is the practice with natural gas-fired gas turbine stations. In the future it is anticipated that extremely efficient gasification based power systems would be based on a combined cycle that incorporates a fuel cell, gas turbine and possibly a Rankine bottoming cycle.
Integrated Gasification Combined Cycle
The most attractive means of utilising a biomass gasifier for power generation is to integrate the gasification process into a gas turbine combined cycle power plant. This will normally require a gasifier capable of producing a gas with heat content close to 19 MJ/Nm3. A close integration of the two parts of the plant can lead to significant efficiency gains.
The syngas from the gasifier must first be cleaned to remove impurities such as alkali metals that might damage the gas turbine. The clean gas is fed into the combustor of the gas turbine where it is burned, generating a flow of hot gas which drives the turbine, generating electricity.
Hot exhaust gases from the turbine are then utilised to generate steam in a heat recovery steam generator. The steam drives a steam turbine, producing more power. Low grade waste heat from the steam generator exhaust can be used within the plant, to dry the biomass fuel before it is fed into the gasifier or to preheat the fuel before entry into the gasifier reactor vessel.
Schematic of integrated biomass gasification combined cycle
The gas-fired combined cycle power plant has become one of the most popular configurations for power generation in regions of the world where natural gas is available. The integration of a combined cycle power plant with a coal gasifier is now considered a potentially attractive means of burning coal cleanly in the future.
Biomass Fuel Cell Power Plant
Another potential use for the combustible gas from a biomass gasification plant is as fuel for a fuel cell power plant. Modern high temperature fuel cells are capable of operating with hydrogen, methane and carbon monoxide. Thus product gas from a biomass gasifier could become a suitable fuel.
As with the integrated biomass gasification combined cycle plant, a fuel cell plant would offer high efficiency. A future high temperature fuel cell burning biomass might be able to achieve greater than 50% efficiency.
If you are a homeowner, you have probably thought of lowering your electricity bills every time you get your bill is logical. According to a recent study, the electricity bill is the second-highest cost most homeowners pay every month. That’s not surprising because thanks to modern science, we use electricity to run appliances for everything around the home nowadays.
Especially during this time when coronavirus has damaged the world economy, people are struggling to pay their bills. Meanwhile, lockdowns mean more time at home and higher electricity use than if you were in the office most of your day. You can reduce your electricity consumption if you use it smartly. As a result, your bill will reduce too. If you are looking to cut your electric bill, this article will give you some ideas on how you can do that.
1. Get A Smarter Thermostat
In case you didn’t know, your heating and cooling system takes up almost forty-five percent of your total electricity consumption every month. So, if you can reduce at least some of your thermostats consumption, you will see a huge difference in your total bill.
Depending on your local weather, you may need to run your heater or cooler throughout the day. Though this is almost half of your total electricity consumption, that doesn’t mean you need to give up your comfort to reduce the bill. All you need to do is to make the job a bit easier for the thermostat. Control your urge to set the temperature too high or too low. For instance, put on a few extra layers of clothes to stay warm instead of setting the temperature too high on the thermostat.
If you don’t want to take up the work to adjust the temperature from time to time continually, look into getting a programmable thermostat. With these thermostats, you can program the temperature for each time of the day. This way, you won’t need to change it frequently, but it will run in just the required temperature all the time.
2. Use Solar Power
As mentioned before, if you want to reduce your energy bills, that doesn’t mean you need to sacrifice your comfort. A great way to reduce your energy consumption is not to use it all the time. You don’t need to use electricity all the time when you are getting unlimited solar energy every day.
Solar energy is also known as green energy. Using solar energy is an emerging trend worldwide. Solar panels are installed on the roof, and these panels then convert sun rays into solar energy. It is a pretty simple process, but it can work wonders for you. The best part is they are not overly expensive to install – but the energy savings are significant.
You might be thinking that the sun will provide energy only during day time. How are we going to run our utilities at night? The answer is pretty simple. You can get solar battery storage. These storage cells store the excess energy that you don’t need in the daytime and let you use it at night. This way, be it day or night, you can get everything done using solar energy.
3. Use Ceiling Fans
If you live in a warm climate, most of your electricity consumption is used by your air cooler. Although new technologies are coming every day, and you can get energy-efficient air conditioners now, but they still consume a lot of energy. While you can’t get rid of your air cooler completely, you can sometimes use a ceiling fan to create an airflow that cools the room down.
A ceiling fan is a great cost-efficient option. These fans pull out hot air and circulate cold air. It may not give you the same effect as an air cooler, but it will surely make your room a bit more comfortable as it circulates cold air. But the best thing is a ceiling fan takes up a fraction of the electricity that air cooler consumes. So, even if you don’t use it all the time, you can alternate between the ceiling fan and the cooler.
There are a few hacks that can help you stay comfortable even with the ceiling fan. For instance, try keeping the windows and doors which are facing the east covered. This will minimize the heat that comes from the sun.
4. Minimize the electricity your laundry takes
Washing your laundry with hot water takes up a lot of energy. The heater has to work a lot to provide this much hot water to your washing machine. Try using cold water to wash your clothes. You would be surprised how using cold water can reduce almost half of your laundry cost.
The key here is to use appliances. So if you are using your washing machine, try using it as little as possible – save the laundry loads and do them all at once during off-peak hours. So if you are using your washing machine to dry your clothes, you need to reconsider that. Drying clothes is a chore that can easily be done without using any energy. Line drying laundry is an easy way that takes no electricity. It may take longer, but it is free.
5. Reduce Phantom Drainage
If you haven’t heard of phantom drainage before, you are in for a bit of a ‘shocker’! It is also known as standby power. You may think that it is unnecessary to remove the plug when you are not using the appliances. They are turned off after all. But the truth is, your devices consume electricity even when they are not in use.
According to a study, appliances consume almost fifty percent of the total energy when they are actually not used. So, this energy is going nowhere, and you are the one paying for it. Not only is it a loss of our valuable energy and degrading our environment, but it is also a waste of money. So always make sure to remove the plug when you are not using an appliance.
To Sum Up
Reducing your electricity bill is not something that can be done in a day. It’s a day to day practice. Following these simple tips will lower your electricity bill remarkably. But these are not the only things you can do.
There are many small things you can do to get better results. For instance, try to install energy-efficient appliances. They take up a lot less energy than regular ones. You should also be mindful of wasting energy by keeping lights or coolers on when they are not required. Last, but not the least, use a budget calculator to keep a tab on where your money is going.
Working from home does have its perks, but one huge downside is dealing with energy bills that are higher than usual. However, the fact that you’re spending most of your time at home shouldn’t be a reason to simply accept skyrocketing energy bills. There might be a couple of ways you can still bring those monthly charges down despite your high consumption while working from home.
Here are the top reasons why power bills spike and what you can do to mitigate the situation.
1. Failure to upgrade appliances
Most new appliances have been equipped with energy-efficient and power-saving features. Old appliances were not required to have these features, which is why ‘vampire charges’ were such a big deal in the past. Once you upgrade to newer appliances, you’ll find that you won’t even have to religiously unplug your devices since they stop consuming substantial electricity once they’re turned off.
Furthermore, old, rickety appliances lose efficiency as they degrade, so they might be consuming more power to do simple, everyday tasks. You might think you’re saving money by sticking to appliances that are decades-old, but you will undoubtedly feel an improvement in your power bills once you make the shift.
2. Overusing ‘big’ appliances
Even with new appliances, frequent usage is still a major problem. This is especially true for power-hogging devices such as your washing machine or dishwasher. The best strategy is to wait until you have enough laundry or dirty dishes to run your machines at full-load or capacity.
This will lessen the frequency with which you run these major power-hugging appliances, therefore reducing your overall power consumption in the long run. If there is an urgent need to free up some clean dishes or clothes, handwashing them is a better alternative than running the washer just for a few items.
3. Late detection of leaky ducts
Poorly sealed or weakly insulated ducts can add thousands of dollars to your yearly power bills. This is because they release hot air into unheated spaces in your home. Make sure you are not spending more than necessary for your home’s heating or cooling systems by maintaining vents and ducts.
Aside from sealing or insulating ducts, you also have to ensure that your airflow is not restricted by furniture and other large objects. Keeping registers clean can also help optimize ducts, therefore helping with the power bills.
4. Higher rates
If you live in an area where electricity markets have been deregulated, like in Connecticut, then know that you have a choice regarding your third party power supplier. Now, unless you’re closely watching spot market news, you might not have noticed that your energy provider has been secretly hiking rates.
To take better control of your power bills, compare the rates charged by power suppliers in your area, then change electricity providers so that you will get the most value for your money.
5. Not exploring cheaper power sources
If you’re already subscribed to the cheapest energy provider in your area but are still struggling with power bills, then you might want to check alternative power sources like installing solar panels or keeping solar batteries at home.
Now, unless you have an industrial-level solar energy system, it’s highly unlikely that you can cover all your power needs using PV panels, but this would at least reduce your dependence on provider-supplied electricity, thus substantially reducing your power bills.
Of course, there are several other tips and tricks that could chip away at your huge power bills like replacing your lights with LED bulbs and setting a timer on your A/C, but if you really want a substantial reduction in what you’re paying for energy, you have to make big changes around the house, such as the ones mentioned and discussed in this article.
As more and more companies mull letting employees work from home permanently, you must be able to do so without forever stressing about those monthly power charges.
Being a student is a wonderful experience that comes with a lot of perks, especially if you’re living on campus. This is the time to explore various experiences, gain personal responsibility, and figure out your meaning in the world.
You can have a lot of fun, make a lot of new friends, and enjoy your independence to the maximum. There are no parents to tell you what to do, no bedtime hour, and very few rules to follow.
Nevertheless, the biggest problem comes when you realize that your money reserves are slowly fading away. In fact, money management is one of the biggest problems that students face when parents aren’t really an option.
The most obvious way to get more money is to get a part-time job. The less obvious way is to become disciplined and reduce your energy bills and expenses. If you haven’t thought about that yet, here are some of the most important benefits of saving energy during college time:
If you’ve never done it before, there’s no need to worry about it. You can make a decision now and commit to being a part of the energy efficiency movement. College and university life can be so much better with more money in your pockets, while also knowing that you’re contributing to a higher purpose.
In today’s article, I’m sharing 7 ways to save energy for students who are eager to reduce the costs of their bills and reduce unnecessary waste.
1. Turn Off the Lights
Spend less time with the lights on and you’ll soon notice a significant difference in your energy bills. This is a simple habit that needs to be implemented through lots of practice. To make it easier, place a note near the switch that says “TURN ME OFF” or “green to go”.
2. Unplug Unused Devices
Once I decided to cut down the energy waste, I have realized that my energy bills were huge because I was always forgetting to shut down my computer and online learning devices.
Don’t repeat my mistake. Simply unplug all the unused devices, including the phone and laptop chargers. Even when you’re not charging, the chargers are still wasting energy. Also, if you really want to save energy, reduce the TV time and don’t forget to turn it off before you leave or fall asleep.
3. Dry Your Clothes Naturally
Most students are used to drying their clothes on radiators because it’s fast and convenient. However, besides the fact that they’re wasting energy throughout the process, they’re also putting their health at risk.
Clothes are absorbing heat from the radiator while pouring condensation into the air. This creates damp and mold.
The simplest solution is to dry your clothes naturally on a rack, especially when the sun is out and you don’t need them immediately.
4. Use Dishwashers
There’s a false belief that washing dishes manually consumes less energy than a dishwasher. Well, that’s a myth that needs to be treated like a myth. To be truly energy efficient, make sure you fill your dishwasher entirely before turning it on.
5. Keep the Door Closed
What’s the point of using energy to create heat if you leave the door open? This is common sense advice that should stick with you immediately. Don’t let the heat go out by simply making a habit of keeping the doors closed.
6. Turn Down the Thermostat
Your thermostat is a very tricky device. If you set the temperature high, the thermostat won’t stop heating until it reaches the values that it has been instructed to reach. It is said that turning the thermostat down can reduce your heating bills by up to 10%.
7. Turn Down the Temperature of the Washing Machine
Whenever you wash clothes, you should consider two important aspects: First of all, use your washing machine only when you can fill it up with a lot of clothes. There’s no point in using it twice a week when you can be disciplined and wait until more dirty clothes are gathered up.
Secondly, make sure you turn down the temperature of your washing machine to approximately 30 degrees. Because washing machines leverage the same amount of water to get the job done, the temperature doesn’t need to be high.
Saving energy in college is easier than you may think. Every time you turn off the light and consciously think about the fact that you’re saving energy, you will be laying the foundation of a new habit.
Start developing more and more energy-saving habits and you’ll notice the amazing benefits in a very short time. Besides the fact that you’ll feel good about yourself, your energy bills will put you in less trouble every time they pop. More money for you, more benefits for the planet!
Did you know the average American household spends about $2,000 annually for utilities? What’s more, $200 to $400 is money wasted due to drafts, air leakage, and outdated HVAC systems. That’s a lot of money, right? You can save that money by making energy efficient upgrades to your home.
Let’s take a look at these money-saving upgrades, shall we?
A very cost effective way to save on energy is by adding more insulation in the attic, or switching out the typical blanket insulation for either cellulose loose-fill insulation or spray foam insulation. The spray foam insulation is the most effective type of insulation for energy efficiency.
With that in mind, installing spray foam insulation requires professional installation and it can range anywhere from $1 to $1.50 per square foot.
2. Energy efficient appliances and HVAC system
Older appliances tend to use a of energy and are nowhere near as energy efficient as newer models. Look for appliances and electronics that are ENERGY STAR approved products. By replacing the refrigerator, washer and dryer and even the ranges, you can save 15% on how much energy your home uses.
It seems like everything is a smart device doesn’t it? Smart thermostats are an excellent way to reduce the amount of heating and cooling is used, especially when you’re not home. In the winter, you can decrease the temperature when you’re not at home and increase it to a comfortable temperature about 30 minutes before you get home, and vice versa.
If you don’t want to go the smart thermostat route, there are programmable thermostats where you can change the settings so the temperature is where it’s set to at the desired time.
4. Eliminating air leaks
One of the biggest culprits of wasted energy is air leakages. A whopping 40% of a home’s heating or cooling is lost due to drafty doors and windows and ill-fitted air ducts. You can prevent this by upgrading your doors and windows to high energy options. Not only are the new doors and windows themselves energy efficient, but the new seals will prevent air leakage.
If you cannot afford new windows or doors, you can always use exterior-grade caulking and new weatherstripping to seal up cracks or gaps you may find.
5. Install ceiling fans
Ceiling fans are a great way to add a bit of style to a room, but they can also help circulate the air, regardless of the season. Most fans have a switch that allows you to change the direction the fan moves. In the summer, it should rotate counterclockwise to push the cooler air down, therefore making the air feel cooler than it actually is. In the winter, it should rotate clockwise to pull the cool air upward and push the warm air downward.
Keeping your home’s energy costs as low as possible isn’t just smart as a homeowner, it’s also a good way to increase the value of your home. And, according to HomeLight’s Q2 2020 survey, we are in a seller’s market! 60% of agents who participated in the survey said there were 60% more bidding wars in June 2020 and the market doesn’t seem to be slowing.
That means if you’re looking to sell, these energy efficient upgrades are a great way to pique a buyer’s interest – maybe even more than one!
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