Feb 14th, 2010 Posted in Science | no comment »
There are several rankings and benchmarks for corporate energy efficiency and corporations can perform an energy audit to see where they can improve with their energy usage. Corporations should look into how many kilowatts they use per square foot and how much gas or BTUs are used per square foot. Each country will have average values and recommended values for being efficient.
If you are looking to improve your company’s energy usage you can look into the different products available as each vendor will have information about its products’ energy consumption. For example, glass companies will provide information on their products’ solar heat gain and U-value, and so on.
Many more corporations are creating positions that deal specifically with energy management and many times there is compensation or benefits for those corporations that have good energy performance. There are several different ways in which corporations can make changes to their energy usage and ultimately enjoy big energy savings.
You want to make sure that your building is properly maintained as this keeps it running as efficiently as possible. Small changes can actually cause big changes in energy consumption. One such example is not running the air conditioning at night if no one is in the building. Also you can go through a retro-commissioning process to get your building back to its original state.
Steam systems are frequently an issue with energy usage as they are not maintained well. Steam traps tend to be used to deal with condensation but these can easily become stuck open and transfer the steam back into the boiler. This wastes a lot of heat as the steam goes back into the system and does not heat the building. You need to make sure these are replaced regularly and maintained well.
You also want to optimize your HVAC systems and these can account for 20 percent or more of all energy used in a building. And lastly, you might want to look into thermal energy storage or heat recovery options.
Save Money On Your Company’s Energy Bill, visit Energy Edge Technologies site for strategies on saving a tremendous amount of capital on your Corporate Energy Bill or call 888-729-5722 Ext. 100.
Tags: Energy conservation hotel, energy edge technologies, Energy efficiency hospitality, Energy efficiency hotel, John Gerace, John Gerace Phd PE, Lower electric bill for hospitality, Lower electric bills, Lower electric bills for hotel, Science
Jan 28th, 2010 Posted in Finance | no comment »
In today’s energy climate more and more people have become motivated to accomplish what they can to become more energy efficient to conserve energy and money. Regrettably this same climate has encouraged some to take advantage of innocent consumers’ desires to save energy and reduce operating expenses.
Vendors that advertise power factor improvement (kVAR correction) and transient voltage suppression to save energy are a good case in point of this bad trend. Recently we are seeing more and more of these businesses cropping up and we believe it is time to set the record straight.
First off, transient voltage surge suppression (TVSS) plays an important part in improving power quality to guard sensitive equipment inside a facility. However, TVSS does not save energy. TVSS’s are barely active an infinitesimal portion of a second to defend against voltage surges which only last for less than a millisecond. To actually decrease energy use the TVSS would need to essentially cut power consumption for an extended amount of time which is not what they are designed to do. Again, TVSS is essential to protect susceptible electrical equipment but consumers should steer clear of vendors promising, or even guaranteeing, a reduction in energy consumption.
And what about salespeople who maintain that increasing power factor will save 15% or 20% or 30% of energy consumption and resultant costs? This is false but also a bit trickier.
For homes, power factor correction does zero to save energy because the average home already has an average power factor of approximately 0.97 which is nearly the perfect power factor of 1 or unity. Additionally, the unit (called a capacitor) is installed at the homes main circuit breaker. According to IEEE 5.5.3.3 capacitors must be located at or near the individual inductive motor loads to decrease power system losses by reducing heat and distribution losses known as I2R losses.
So what about commercial and industrial facilities looking to use power factor correction to shrink energy expenditures? It is completely appropriate for a business that is incurring penalties or a kVA billing structure from the utility company to improve the facility’s overall power factor by installing a capacitor bank at the main electrical service entrance or individual capacitors at or near the particular motor loads. Doing so will do away with the power factor penalties and/or reduce the kVA demand charges on the electric bill which can save considerable money and provide a significant ROI on the investment.
But what about power factor correction reducing kWh consumption? IEEE also tells us that at most I2R losses only account for 2 to 5% of the total load in a facility. Simple arithmetic tells us that it would be in opposition to the laws of physics to obtain the 15% to 30% energy reduction claimed by some vendors. Consider it. Even if your facility had 5% distribution losses and you could correct 100% of the predicament via power factor correction at every load (which can’t be done) you would still save no more than 5% at most. No where close to the claims of some capacitor reps and manufacturers.
All that said, power factor correction when done appropriately will eliminate utility penalties and kVA demand charges, improve facility power quality, increase electrical system capacity, and save a modicum of energy when applied at the proper motor loads in an industrial facility.
So make an investment in transient voltage surge suppression and power factor correction when appropriate and necessary. But caveat emptor!
Save Money On Your Company’s Energy Bill, visit Energy Edge Technologies site for strategies on saving a tremendous amount of capital on your Corporate Energy Bill or call 888-729-5722 Ext. 100.
Tags: Carl Baer, energy edge, energy edge technologies, energy edge technologies corp, energy edge technologies corporation, Finance, John Glorioso, John J. Gerace, Kevin Corrigan, Robert Holdsworth, Sales, Scott Brown, William Poulos, William Thiessen