Do Fuel Cells Have a Future as an Energy Source?

The concept of fuel cells as an energy source is credited to a chemist, William Grove. He demonstrated in 1839 that electric current could be produced by an electrochemical reaction between hydrogen and oxygen over a platinum catalyst. Thereafter, many alternate forms of the technology emerged for producing electricity from various materials and catalysts. History of Fuel Cells During the OPEC oil embargoes of the 1970s, many governments and consumers became more concerned about energy efficiency and environmental awareness. Not surprisingly, fuel cell technology as an alternate energy source grabbed the headlines. Government entities began sponsoring the development of FCEV

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Building Automation Systems Networking, Benefits, and Challenges

A building automation system enables various components in a building, to communicate with each other. This enhances living conditions within the space while reducing energy use and operational costs. A basic building automation system (BAS) can monitor parameters such as the temperature, light, humidity, occupancy and activities levels. Using algorithms, it adjusts the appropriate equipment to suit program levels. Having automatic controls improves internal conditions, making a space more comfortable, safe and secure while reducing energy consumption. Other features include monitoring the equipment condition, as well as safety or security issues. The system can send alerts or sound alarms when

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Facts About Electrical Prefab and Profitability

Electrical contractors are increasingly turning to prefabrication as a way of cutting costs and increasing productivity and profitability. The use of electrical prefab provides an opportunity to reduce project duration, installation labor needs, and costs, as well as enhancing safety. The prefabs are usually designed and built in the workshop and then delivered to the work site as ready-to-install modules. Thus, they only require quick and easy assembly. Carrying out these tasks in the workshop, which provides a controlled environment, is both convenient and cost effective. The workers are more productive as opposed to the job site where they may

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Cordless Tools Recommended for Electrical Contractors

Cordless tools have been around for decades, but the technology is constantly evolving. They offer portability, convenience, and access to a wide ranges of devices to make any project go smoothly. DeWalt Tools The DeWalt line of tools has been a long-time favorite of many contractors for decades. They offer a wide range of tools from precision 8-14.4v screwdrivers and drills to the well-known 18v cordless tools. Their flagship family of tools is the new 20vMAX line of brush and brushless drills, impact drivers, saws, and grinders. With over 100 tools, from miter saws and band saws to framing nailers

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Understanding Residential House Wiring

Residential house wiring should offer the capacity to efficiently and safely supply the entire house with electricity.  In addition, it should adhere to relevant electrical codes to ensure safety in regard to electric shocks and fires. Electrical codes provide a design for standard wiring systems that qualified electrician will readily understand. They specify the type and size of cables, parts, spacing of electrical outlets, grounding, protection. Only authorized people should carry out the wiring design. Why you should use a licensed, qualified electrical contractor Just like all other electrical work, qualified and licensed workers must perform residential house wiring. If a

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Best Practices for Residential Electrical Outlets and Receptacles

The placement and installation of residential electrical outlets and receptacles is governed by local and national code compliance organizations. This is done to minimize the risk of home fires and electrical shocks. A few of the best practices are discussed below. Lights should be on their own properly rated circuits. It is recommended that they have a 15 Amp branch circuit for lighting a living area of up to 600 square feet. Increase to 20 Amps for 800 square feet. However, this may vary, especially if there are numerous high powered lights. Most of the time, there is an average

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Do the Benefits of Prefab Electrical Systems Outweigh the Costs?

Electrical contractors often utilize prefabrication techniques when installing big systems. This method can cut costs and shave time off the project, thus increasing profits. Prefab electrical systems offer a number of great benefits. By fabricating electrical assemblies in advance at the workshop, the electrical contractor and building owner benefit in a variety of ways.  A few of these are discussed below: How prefab benefits the building owner Electrical prefabs minimize those repetitive tasks performed at the job site. In addition, they reduce the need to find extra space for storage of materials. Prefabrication means putting together the electrical assemblies well

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How to Select a Variable Speed Drive

The variable speed drive helps consumers realize huge energy savings and control. The key to savings is creating a good match between the application and the drive. Some electrical suppliers such as USESI provide guidelines to their customers on how to chose suitable drives for their applications. Some of the major considerations for optimum performance include: The type of motor to control When selecting the variable speed drive, the consumer must consider factors such as the motor design and compatibility with the electrical drive. The electrical insulation in older motor windings may be insufficient to withstand high transients associated with

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Advantages of Adjustable Speed Drives in Motor Control

Adjustable speed drives (ASD) are devices comprised of electronic components that regulate the current or frequency of power to the motor. They convert the AC main’s fixed voltage and frequency to a variable output.  Capable of providing different motor speeds and torques to suit a range of application needs, the ASD offers many benefits. The frequency determines the speed of the motor, while the combined voltage and frequency determines the torque. The adjustable control feature allows the matching of the motor speed or torque to the process requirements. Even though there are both fixed and variable drives, the adjustable version

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Three Phase Power Electrical Wiring

It is common practice to install three phase power components in commercial buildings, residential flats, and industrial plants. Sometimes, the wiring is distributed such that different lights and electrical outlets in one location are supplied by a variety of phases. This helps in balancing the load while ensuring that a power outage on one of the phases does not leave the whole floor without power. The three phase power supply has three live wires and a neutral. A three phase machine will be connected to the three phases, while single phase equipment is connected between one phase and the neutral.

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