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Frequently Asked Questions

What is the power factor of an energy efficient motor?

Eastland Industries, Inc.
Power factors vary tremendously depending on motor loading manufacturer. While some energy efficient motor models offer power factor improvements of two to five percent, others have lower power factors than their standard motor counterparts. Overall, replacement of a standard with an energy efficient motor isn't likely to have much influence on power factor. On the average, a power factor improvement of less than one percent is expected.

What is an energy efficient motor?

Eastland Industries, Inc.
quot;energy efficient" motor produces the same shaft output power (hp), but uses less input power (kW) than a standard-efficiency motor. Energy efficient motors must have nominal full-load efficiencies that meet or exceed the NEMA threshold standards. Many motor manufacturers produce models significantly exceeding the NEMA standard.

Is Eye Saver energy efficient?

Westinghouse Eye Saver Easy Reading Light Bulb
Eye Saver is efficient because it controls light from escaping through the top of the bulb, thereby directing more light (than a standard incandescent bulb of similar wattage) onto the work surface. (back to top) Eye Saver gives off the same amount of heat as a conventional incandescent bulb of similar wattage. (back to top)

Can an energy efficient motor replace my present U- or T-frame motor?

Eastland Industries, Inc.
Yes. Since T-frame energy efficient motors generally use the same frame casting as a standard motor, standard T-frame to energy efficient T-frame should be a straight replacement. An adapter or transition base is required for a U-frame to T-frame replacement. In addition, some manufacturers now make energy efficient U-frame motors. Contact Eastland Industries at 1-888-547-6500 for specifics.

Can a standard motor be rewound as an energy efficient motor?

Eastland Industries, Inc.
It is sometimes possible for a standard motor to be rewound with slightly larger diameter wire. This rewind procedure can slightly improve the efficiency and adversely increase the starting current of a standard motor above its initial level. However, the efficiency would still be lower than that of a new energy efficient motor because of its unique physical characteristics. Energy efficient motors can be rewound to maintain their original efficiency.

Should I rewind my standard-efficiency motor or purchase an energy efficient motor?

Eastland Industries, Inc.
energy efficient motor will result in lower energy costs when compared with a rewound standard-efficiency motor. Its cost effectiveness will depend on the hours operated, motor efficiencies, utility rates, and the difference in cost between the rewind and the energy efficient motor.

What is the efficiency of an energy efficient motor at different load points?

Eastland Industries, Inc.
The efficiency of any motor varies with such factors as size, speed, and loading. Energy efficient motors offer performance improvements over standard-efficiency motors under full, partial, and unloaded conditions.

What is the payback period for selecting an energy efficient versus a standard-efficiency motor?

Eastland Industries, Inc.
The payback period varies according to the purchase scenario under consideration, cost difference, hours of operation, electrical rates, motor loading, and difference in motor efficiencies. For new purchase decisions, the simple payback on the incremental cost of a continuously operated energy efficient motor can be recovered through energy savings in well under two years. Manufacturers are free to select descriptive terminology for use in identifying and marketing motor lines.

How do I know I am buying a home that is energy efficient?

Frequently Asked Questions
Buy one with an ENERGY STAR® Label. ENERGY STAR® Homes are designed to use at least 30 percent less energy than required by the national Model Energy Code. To achieve ENERGY STAR® status, a home must be validated by a Home Energy Rater - a certified, third party inspector who audits and tests the home. Home buyers can also save money on their mortgages. ENERGY STAR® Mortgages give home buyers easier access to preferred financing.

How can I be energy efficient?

FAQs
This is mainly about avoiding heat loss (see above), but you can add heat exchangers (with appropriate filters to prevent them getting clogged up) for added efficiency. These take a high proportion of the heat from discarded air and use it to warm the new fresh air supply. Venue operators have a duty of care to workers under Health and Safety regulations. A casino worker recently won an out-of-court settlement of around £50,000.

What does the U.S. Department of Energy have to say about Power Factor reduction?

EMS - The Energy Management System - Questions & Answers
EMS will enhance an average PF correction to any panel that has more than one PF source because the distribution network supplying different motors has an average power factor reading at any given point. EMS will not over correct or cause harm to any of the motor loads, regardless of how many are running at different times, provided units are properly sized to the application. Over-correcting can occur only if too large a unit or too many units are used on a specific application.

Does a radiant system make sense if the building will not be very energy efficient?

Radiantec : FAQ Frequently Asked Questions, Radiant Heat, Sy...
It is always best to be energy efficient, but if not, it is still best to use radiant because you will use less energy and spend less money. You may need a supplemental heat source on very cold days, but radiant heating is the only way to be truly comfortable in a room that is not energy efficient.

What is Power Factor?

TOTAL ENERGY CONCEPTS - FREQUENTLY ASKED QUESTIONS
Power Factor is the measurement of how efficient your facility is using the power that is being supplied by the utility company. When looking at an individual piece of equipment, the Power Factor of that piece of equipment is the expression of its operating efficiency. For example, if the Power Factor measured at the equipment is 75%, then that piece of equipment is only operating at 75% efficiency.

Is a Country Manor Shake roof energy efficient?

Frequently Asked Questions
Yes; Aluminum reflects the vast majority of the sun’s rays, so it doesn’t retain as much heat as wood, asphalt shingles, tile, or cement. This means your Country Manor Shake roof will not pass the sun’s heat into your attic, reducing the load on your air conditioner in the hot summer months and possibly saving you energy dollars.

Is it more energy efficient to leave a lamp on or to turn it off?

M&M Lighting - Frequently Asked Questions
Since there is no surge involved in the starting of any residential bulb, the answer is if you are not using them, turn them off. fluorescent lamps have different operating needs. If you have a fluorescent lamp, the general rule is turning the lamp off unless you are going to need it again within fifteen minutes. Frequent cycling, turning on and off for short periods of time such as in a closet application, can reduce the life of a fluorescent lamp.

Is it more energy-efficient to turn a lamp off or leave it on?

FAQs: Fluorescent: GE Commercial Lighting Products
The question of "turn them off or let them burn" is a common one in lighting. Since there is no surge involved in the starting of any residential bulb, the answer is "if you are not using them, turn them off." The cost of operating a light bulb is the wattage consumed while lighted thus the general answer is turn them off. High intensity discharge lamps (rarely found in indoor household applications) and fluorescent lamps have different operating needs.

When buying a new appliance, how do I know which are most energy efficient?

Safe Disposal of Refrigerated Household Appliances: Frequent...
ENERGY STAR® is the government-backed symbol for energy efficiency. Products that have earned the government’s ENERGY STAR® label (such as refrigerators, freezers, and other appliances) lower greenhouse gas emissions by meeting strict energy efficiency guidelines established by U.S. Environmental Protection Agency and the U.S. Department of Energy.

How can I calculate energy savings with efficient industrial lighting?

Light Corporation FAQ: questions & answers about fluorescent...
Use the energy savings calculator to determine the cost savings of switching from an HID system to a fluorescent lighting system in your workspace. You will need to know the annual burning hours of the system, the energy costs in your area, your estimated labor rate, if your system will be dimmed (% of time and brightness), fixture quantity, total wattage, and lamp cost.
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