Archive for the 'Heating & Air' Category

Feb 24 2010

What You Need to Know About Boiler Condensing Economizer

If you are looking to save energy, as you can’t keep up with your bills anymore, you should consider investing in a boiler condensing economizer. What you have to do before you decide on which boiler to get is determine the capacity of the boiler, the steam production, the stack gas temperature, fuel consumption, hours of operation and the combustion efficiency. It is also vital that you discover your in-plant uses for the water; some examples are preheating, makeup heating, process heating and domestic water heating. Once you have distinguished what you need the boiler condensing economizer for, it will be easier for you to make a decision.

It could be residential purposes that you need the boiler for, or it could be industrial, either way, you must know exactly what it will be used for before you can search for the right boiler. Cast iron boilers are the most popular ones to use; they are durable, reliable and affordable so keep this in mind when you are shopping for the perfect boiler. Another aspect you have to take into consideration before purchasing is the thermal requirements to be met through installing an economizer boiler. Cost savings as well as fuel energy are important factors too and should not be neglected.

What you should do is obtain quotations from different companies, but make sure that the quotation includes the installation as well as the boiler itself, unless you know how it should be installed. However, even if you do know a little about boilers, it is not advised that you attempt the installation yourself, but rather get a professional in to do it for you as that way you know that it is done properly and should something happen with the boiler after that you can call them back to fix it and it won’t be your fault, nor should you have to pay for it if the problem stems from the way in which the installation was done.

The heat in the exhaust gases that is available in a boiler condensing economizer will depend on how much hydrogen is in the fuel, it will also depend on the fuel firing rate, the stack gas temperature and the amount of excess oxygen found in the flue.

If a boiler plant is able to provide as much as 500,000lbs of much needed steam for the heating system, the best system to use here would be a direct contact boiler. This is one of the condensing economizers, so it should all work out just fine. This should save anything up to about 20MMtu, but of course this amount would depend on the boiler load used at one time. Due to the fact that the condensate will not go back from the heating system, energy that is recovered will be used further, to heat the plant makeup water.

A boiler condensing economizer will benefit you in more ways than one; not only is it cheaper to have, but it is also easy to use. You will be much happier with the performance of one of these boilers compared to that of a traditional boiler system.

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Feb 23 2010

Heating and Cooling Systems For Your Home

The heating and cooling systems of your home are also known as its HVAC equipment. This acronym stands for Heating, Ventilation & Air Conditioning. The HVAC equipment is responsible for the temperature, humidity & quality of the indoor environment and comfort for the habitants.

There are many different types of heating, ventilating & cooling equipment. The type of equipment used in any particular area has to with its climate. The length & coldness of winter and the length & hotness of summer are the main factors in determining what is needed. The humidity levels also play an important role on what equipment would be required.

HEATING SYSTEMS

Heating your home obviously is a process of adding heat to the indoor environment therefore increasing the temperature. The typical winter time thermostat temperature setting is 66F to 70F with the average being around 68F. This is a reasonable temp for comfort and efficiency. Below are the most common heating systems installed in new homes today.

Forced Air - Most common type of heating and cooling systems used. A blower circulates air across a heat exchanger to heat the home. A/C systems can added to these systems.

Heat Pump – There are several types of heat pumps, however most common is the air-source heat pump. Heat pumps provide the heating and cooling for your home.

Hydronic - Water is heated by a boiler and circulated through radiators located in the home.

Radiant – Water is heated by a boiler and circulated through tubing located in floors, walls or ceilings to warm those surfaces which in turns heats the space by radiation.

Geothermal - A heat pump that uses the ground or water for its heat source. It serves your heating and cooling needs in one system.

Electric - Heat is supplied through electric or resistance heaters when electricity is passed through the device.

COOLING SYSTEMS

The cooling of your home, also known as air conditioning, is the removal of heat to cool and dehumidify the indoor air. The typical summer time thermostat setting is 74F to 80F with the average being around 78F. This average temperature is reasonable for comfort and efficiency. Below are the most common A/C systems installed in new homes today.

Forced Air – Most common type of heating and cooling systems installed. A compressor circulates a refrigerant between two coils (one indoors & one outdoors), then a blower blows through the indoor coil which removes the heat from the home and then it is circulated to the exterior to dissipate the heat that was absorbed to the outdoor air. It uses a system of ductwork to distribute the conditioned air throughout the home.

Ductless Split System – A mini-split air conditioning system. Similar to the traditional split system, however each room has a air handler located it for individual control and therefore no need for ductwork.

VENTILATION

The purpose of ventilation in a home is to help control the indoor air quality & humidity levels. It is best to control this ventilation through the heating and cooling systems of the home.

Kitchens and bathrooms have ventilation systems for removal of odors and moisture. If these are ducted through unconditioned areas (ex: attic, crawlspace), they should be insulated to prevent condensation from forming.

Clothes dryers are another form of ventilation where the moisture is vented to the exterior. This ducting should be made of metal pipe for proper fire protection and its joints are to be only taped together (high quality aluminum tape is best) as screws will collect lint & eventually clog the duct. Clothes dryers should NEVER be vented to the interior (some stores sell this type of lint collector for this purpose) as this will increase the indoor humidity levels tremendously and will contribute to mold growth & poor indoor air quality.

Today’s homes are being built much tighter therefore allowing less infiltration of outdoor air. The air exchange rate (outdoor air that leaks into the home) of newer homes is much lower than older homes, therefore the indoor air can become stagnant and unhealthy if nothing is done to increase this air exchange rate. Most home heating and cooling units, including forced air heating systems, do NOT mechanically bring fresh air into the house.

One way of doing this is with a heat recovery ventilator. This device brings in outdoor air through a type of exchanger where the indoor also passes through it, therefore transferring the heat from the indoor air into the outdoor air that is being brought into the home. You can also installed a duct on your HVAC return plenum directly from the outdoors so that any time your home is under negative pressure, it draws the air through this duct instead of through the cracks in your home.

Mac has remodeled many old homes, been employed in several different construction trades & is a major do-it-yourselfer. He currently owns a home inspection company and has been inspecting homes for many years which is where my experience is most relevant to the proper way to build a home. To learn more about building your dream home, visit my website, http://www.house-building-tips.net

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Feb 22 2010

Alternative Wall Heaters

There are several types and brands of wall heater. They are fairly simple to install and not too expensive to buy and to run. Many people buy them for their homes either because their homes are not heated by central heating, or because there are certain rooms of their homes that are either not reached by the central heating or not warmed quick enough by it.

The three types of wall heaters are electric heaters, propane heaters, and gas heaters. The advantage to electric wall heaters is that you plug them in and voila! That is all there is to it, while a gas heater needs a gas line installed, which costs more and propane wall heaters will need propane. There are also dual fuel sourced wall heaters on the market that can run on more than one energy source. If you are someone who is concerned about the environment and this is something that is important to you, then you should note that the gas wall heater is the most environmentally friendly of the three mentioned above; however, if you favor plain old convenience more than anything else, the electric heater would likely be the way to go; in fact, out of the three heater types mentioned above, the electric wall heater seems to be the most popular.

There are also two ’set up’ types for wall heaters – one is set up on the wall with hooks or fasteners, then plugged in or attached to its source of energy. This has the advantage that it could be moved if you like; simply unfasten the fasteners and re-fasten them where you would like to move the heater to. The second type is called an ‘in wall heater’ – that does not mean it is built into the wall when the house is built, but it is inset into the wall. Whatever type of heater you buy it will set you back around US$100 or so, although this also depends on what brand you buy. The wall heater should come with a ten year warranty on the element and one year on the other components that go with it. This price range is for a 2000 watt heater, which will likely heat your room up in a quick amount of time. Most heaters also come with a thermostat included, although you should always check that this is the case before you buy the heater. The thermostat helps to regulate the temperature in your room, preventing it from getting too hot (or too cold.)

Another point to keep in mind when buying a heater is that it is advantageous for you to get one that already has a blower included, you will need one if you want the room to heat quickly. Many heaters do not include them and you have to buy them as a separate addition, which will set you back a little more.

Bob Hander, part time home decorator, loves to write and share his experiences with you on a variety of topics ranging from heaters, to his views on the best propane heaters.

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Nov 26 2009

Choosing the Perfect Home Heating System

Home heating systems can be of two basic types. You can either set up a central heating system, or you can fix a heater in each room. It is your call. Operating each of these two types will be different. In the case of the central heating system, you will not have to do too much work. All that you would have to do is change the intensity of the heat by the simple turn of a knob.

The second kind of heating system can be quite tedious. In this case, you will also have to maintain all the heaters that are situated in each of the rooms. The central system is simpler to maintain. You could use a boiler or a furnace, which could be situated below your building. By pumping warm air through the air ducts, you will be able to heat up your entire home. You could also have room radiators installed. This can make use of heated water which would heat up the house.

There will be thermostats which can control the heat levels in your house. With these controls, you can adjust the heat at your home. If the homes are without a central heating system, you could have floor heaters or baseboard heaters, which run on electric current.

The heating systems which you decide to install in your home will have to be of the right size. After all, you are seeking to heat up your entire home. The unit should not be oversized. An oversized unit would lead to overheating at times when the weather is not too cold. You would also need to check to see how much heat is being lost through the walls and windows of your home. Then you will be able to determine the size for the heating system that you should install. The system should be able to handle the heat load. After all, you should not face a breakdown in the middle of severe cold weather. You will also need to look for something that is cost effective and of high quality.

The next step that you will need to take is to calculate how much energy you will be consuming every month. If your consumption levels seem too high, you could choose to heat only the main rooms in which you would need the most heat. This would help you to save energy. You could use radiant elements which could be installed on the roof. In such a case, blowers would not be required.

Radiant heating is also possible through pipes. These pipes would be instrumental in running hot water under the floorboards. Radiant heating units could also be used on the ceilings, depending on how warm you want to keep your home. There are also space heaters which operate with the help of kerosene or gas. These can be used as and when required to heat up a specific space. All that you would require in such a case would a place on your wall.

Understanding various systems for heating the home is very important. This is a must before you go about installing one in your home.

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Nov 25 2009

Space Heater Safety Tips

During the cold winter months, many homeowners and renters turn to efficient and easy-to-use space heaters to provide supplemental heat, heat rooms that are normally not heated, and provide warmth when the power goes out. While these space heaters can provide many hours of comfort, there are some dangers that everyone needs to be aware of. Using space heaters safely is not difficult, but it is important to gather the knowledge needed to avoid common problems with these appliances.

Some of the most critical tips for keeping the home and family safe when space heaters are in use include:

  • Make sure that all space heaters are placed a minimum of three feet from anything that could be flammable
  • Never lay clothes or any other materials on top of a space heater. It can be tempting to dry clothes, socks or shoes near a space heater, but those materials could easily catch fire.
  • Never use space heaters for anything other than providing supplemental heat. Using space heaters to cook food, thaw frozen water pipes or any other purpose for which they are not intended is dangerous.
  • Use only the proper fuel for fuel burning space heater. Kerosene heaters are designed to burn only kerosene, not any other kind of fuel.
  • Turn off all space heaters when the room is empty, and turn off all space heaters before going to bed for the night.
  • Pets and children should be carefully supervised around space heaters. These appliances get very hot, and children or pets can easily be burned severely.
  • Carefully check all electric space heaters or signs of frayed wires, broken wires, overheating or frayed insulation. If any problems are found the heater should not be used until the problem has been fixed by a professional.
  • When buying a new space heater, be sure to look for built in safety features such as heating element guards and automatic shutoff features.
  • When adding fuel to a fuel powered space heater, always allow the heater to cool completely before adding additional fuel. If any fuel is spilled, be sure to wipe it up thoroughly and immediately.
  • If considering a kerosene heater, be sure to check with the local fire company first. Many municipalities do not allow such heaters in their communities.
  • Try to avoid using an extension cord with a electric space heater. If such a cord must be used, be sure to choose an industrial strength cord and make sure you use the right gauge size for the heater.

These tips, along with the user guide and instructions that will accompany any heater you buy will ensure that you keep your family and your home safe.

You can find a great Heater Guide for all types of heaters, including electric space heater and kerosene heater information and Consumer Product Safety Information.

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Nov 24 2009

Winterize Your Home In 10 Easy Steps

Winterize your home to save a lot more money than you’d think. Did you know that over 40% of your energy bill goes to heating or cooling? So here are 10 easy steps to winterize and save money while helping the environment as well:

1. Don’t wait until winter. If you do most of these things between Labor Day and Halloween while the weather is still relatively nice, it makes it a lot easier to get motivated and get done. Some of these steps will help you save money year round as well.

2. Keep your furnace’s filter clean. This helps your furnace work more efficiently and helps keep your air fresher. If you have central air, you should already be doing this monthly because it helps your A/C run more efficiently as well. A simple reusable filter that you clean will really help you save money because you only have to buy it once.

3. Clean your gutters. This keeps melting snow from seeping under shingles which helps your roof last longer.

4. Replace worn, cracked or torn weather-stripping around doors and windows. Keep the cold air out and the warm air in. Use a small piece of plastic wrap or an incense stick to find drafts. Use caulk to seal windows. If the windows are really bad, have them replaced with energy-efficient models. If that’s not economically feasible, get plastic sheeting and tape it around the windows. You can get the kind that you warm with a hair dryer to make it clear and smooth.

5. Check your insulation, especially in your attic. Make sure it’s thick enough. If you’re unsure, it might be a good idea to add some. It’s better to have too much than not enough.

6. Make sure your thermostat is efficient and has fresh batteries, if needed. You can replace an old thermostat with a new programmable unit that controls the temperature for you. It can lower the temperature during the day when no one is home, and at night when everyone is asleep.

7. Set your thermostat lower: For every degree you lower your thermostat, you’ll save about 3% on your heating bill. You can lower it just at night by getting a programmable thermostat.

8. If your house has storm windows, install them before it snows. A little too early is better than putting them up when it’s really cold outside.

9. Make sure you have an energy efficient furnace or central air unit. If your furnace is more than 10 or 15 years old, it’s about time to replace it with a more efficient unit. It may seem like a lot of money, but it will pay for itself in savings over time. Get your furnace serviced and have the ducts cleaned every year before it gets cold. This can prevent problems and fix leaks early.

10. Install energy efficient blinds. Open the ones that face the south and east during the day to let in the sun’s warmth, then close them at night to keep the heat in.

Most of these cost saving measures are very inexpensive. If you can spend $5 to save $20 that’s a very good return on your investment. For a little bit of your time and money, you will definitely reap the rewards for quite some time.

Neece, like everyone else, enjoys the finer things in life. She researches and discovers the best things available so you can find the luxuries you deserve as well as gifts for those you love all in one convenient place. http://www.authenticindulgences.com/

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