Feb 6, 2014 Heating
Gas furnaces come in a variety of sizes and can be used for different applications. By and large, the most common gas furnaces use natural gas and utilize electronic ignition. Electronic ignition gas furnaces are slowly replacing the older style standing pilot furnaces where a pilot light remained lit all the time.
Now, with the newer modern electronic ignition, gas furnaces only use gas when there is an actual call for heat. This adds efficiency because with the older standing pilot gas furnace the pilot remained on even in the summer months. While the heat produced by a standing pilot light is negligible, it is still added heat to the system in the summer when the whole purpose in the summer is to remove the heat from the system rather than add heat like a standing pilot would do.
A gas furnace is rated for efficiency by AFUE or Annual Fuel Utilization Efficiency rating. Furnaces installed before the nineties have efficiency ratings down to 60 percent efficient (or less in some cases). The AFUE ratings of gas furnaces is simply the amount of heat delivered by the gas furnace divided by the fuel used to make that heat.
Another way to look at AFUE is to measure the amount of heat lost up the exhaust stack. If the furnace delivers 90 percent of the heat produced into the dwelling then ten percent of the heat produced is lost up the stack. Even the highest AFUE rated furnace is going to lose heat up the stack.
It is nearly impossible to get 100 percent AFUE out of any gas or oil furnace simply because all oil and gas delivered to a furnace has a small amount of moisture in it. Gas typically has a moisture content of 4 to 5 percent. Oil depends on the quality of oil purchased, how many additives used in the oil, and the integrity of the oil tank and piping system. The end result of all this moisture and additives in the fuels effects the AFUE of the furnace and is the reason why no gas or oil furnace can achieve more than 96 percent efficiency.
The original is here: High Performance HVAC
Feb 4, 2014 HVAC
Heat Pumps can be a very economical way of heating and cooling your dwelling depending on geographical location and the cost of electricity in your area. The volatile costs of natural gas, propane, and oil has enabled these conditions where it can be cheaper to heat with a heat pump than with fossil fuels. There is a common conception that a heat pump blows cold air and while this can be true in some cases it is not true to all heat pumps.
If a heat pump is blowing cold air when in the heating mode then it needs to be looked at because there exists a problem that needs to be corrected. Even when the outside unit kicks into the defrost mode the unit should provide adequate heat to heat the zones which it serves. Again, if it is not providing adequate heat then it needs to looked at for a technical problem that needs correcting. A well designed heat pump system, working properly and efficiently, can provide competitive and economical heat for your dwelling.
Author: High Performance HVAC
Jan 31, 2014 Heating
No matter what sort of home you have you should consider the use of Commercial Biomass boilers. Energy efficiency is very important these days and Commercial Biomass boilers can help with this. Commercial Biomass boilers are easy to use and as long as you follow steps to ensure your own safety. It’s safe and simple as long as you are careful.
Commercial Biomass boilers are easy to use and are certainly an option you should consider if you are worried about the world and want to be more energy efficient. The first thing you need to do is consider how often you need to heat your home. The condition of your home and the environment you are in decides this for you.
Keeping your Commercial Biomass boilers regime regular is important if you own a home with no double glazing or you have a damp problem or live in a cold area. To avoid your home being cold and damp while you’re living there or while you’re away you should use Commercial Biomass boilers on a regular basis.
If you have a very cold environment then you should probably use Commercial Biomass boilers every day or at least once every two days. Keeping your home warm is important no matter how warm you may think it is. Just remember to be careful while you’re using Commercial Biomass boilers.
While you’re looking for Commercial Biomass boilers, the second thing you should think about is the type of Commercial Biomass boilers you’ll need.Commercial Biomass boilers are ideal for people with poor immune systems because they’ll ensure that you don’t get ill easily by using energy efficient fuel to keep you warm.
To ensure that you buy the right Commercial Biomass boilers for your needs you’ll need to do some research first. Make sure you know what you’re looking for. Commercial Biomass boilers are very cheap to run now. You can get very quiet Commercial Biomass boilers as well so that you won’t be irritated by it running.
Build up of damp and cold can cause major problems in the way of mould, spores and leaks so it’s essential that you keep your system heated. Commercial Biomass boilers are a great way to ensure your home is entirely heated and will definitely help a damp or mould problem.
Commercial Biomass boilers aren’t very obtrusive anymore either. They used to be large and take up a lot of space but these days they are small and easy to install. Installing Commercial Biomass boilers is easy these days. Usually all you have to do is get a technician to come and install it for you.
Using windows a lot will increase your chances of needing to use Commercial Biomass boilers because of a build up of cold and damp problems. Maintaining your Commercial Biomass boilers is pretty easy. Usually you just have to keep an eye on them which is a simple enough task.
Commercial Biomass boilers, in general, don’t have to be a horrible task. If you hire a safe and practical professional then it’s easy and fast. In order for Commercial Biomass boilers to work their best you should place them around your home in the attic or storage areas.
Commercial Biomass boilers can be very helpful for people with poor immune systems but they are also useful for people who want to be energy efficient. Many people decide to buy Commercial Biomass boilers because they are an essential part of their lives. They’re simple and easy though which makes them popular.
Jan 29, 2014 Ventilation
The fan of Nisco Co. makes the low profile positive pressure ventilators that have been designed to fit spaces of the American National Standard in small bins close without benefit or scarificing characteristics. These compact ventilation blowers are available is both gasoline driven conviguration that with the electric motor to single phase 115/230V. The positive pressure ventilator was used in a large amount of fan pressurize a burning structure, in case of fire, to expel the smoke.
The fans of positive pressure ventilators are portable and gasoline, most of which use a 5.5 engine horsepower. The theory of positive pressure ventilation is based on the principal of even pressure distribution. Once a structure is pressurized, air and smoke can be espelsi with the opening (similar to escape from an inflated baloon). The electric smoke ejectors (negative pressure ventilation) can be used for removal of smoke but this was found to be less than positive pressure ventilation.
What does the higher positive pressure ventilation vs negative pressure?
* The risk of injury from the docked structure has decreased while the fan running.
* The positive pressure ventilation is faster to install and requires little personnel that the positive pressure fan was a source of energy independent, while electric fans require cables and smoke and the heat of adapters is removed from all levels of negative pressure from the different structure which can cause the most rapid localized extraction
* After the initial shock, the positive pressure ventilation can be initiated and which show that immediate improvements in the internal conditions.
* It allows the replacement of pollutants with the vital cooling device, air cleaner – especially in buildings without windows or sealed . It ‘s also very effective in large buildings and divided into compartments, warehouses, schools, etc results fast allow firefighters to enter the fastest due to lower levels of warmth and visibility improved.
The following tests should be considered for effective use of positive ventilation:
– The cone of air must cover the opening of the socket. The fan must be provided for the correct distance from the structure like that of the cone forms a seal around the air opening.
– The size and location of the discharge is important. The discharge, if at all it can be up and away from the wall as is practical. The format of discharge should take place between times of 1 / 2 – 3 / 4 socket. This may not always be possible while the fire is already dictating the positions and sizes of discharge, but each time there is a choice, the criteria above should be used.
– It is important to control the flow between the AIT and unloading. The positive pressure ventilation can move long distances on air, if adequate control is done by opening and closing doors, windows, etc.
It is important that firefighters know not to open the structure too: IE breaking windows, etc.. The standard features of positive pressure ventilators Co. fan of Nisco include: fold down “T” handle, 8 “pneumatic tires with the axis of great breadth, a” tilt and lock ‘device that allows you to l’ unit is tilted 20 degrees up or down with the positions in the infinite Meanwhile, robust and illuminate a 1-inch casing around the structure.
Electric motors protected against explosions drivers are available as well. The optimal provision of the fan on most of the 6 ‘6 “doors is about five – six feet away. If the provision is too close, the seal won ‘t be the place. If the provision is too far, the cone of air will be good to hit out of the opening. Further information can be found in industrial Co.