Hess Gasoline Truck Transporter with Helicopter 2006



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Hess Gasoline Truck Transporter with Helicopter 2006
Showing posts with label Generators. Show all posts
Showing posts with label Generators. Show all posts

Sunday, May 12, 2013

Generators

Generators





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Generators are used for the generation of electric power. There are basically two types of generators: standby generators and portable generators. Generators ensure that most of the essential appliances can be run whenever there is a power outage. Standby generators provide backup power in homes and offices and are permanently installed outside the house or office building. They are plugged into the electric circuits or home wiring. Standby generators can automatically detect disruption in the usual electric supply and begin supplying power within a few seconds. Portable generators are usually used in places where there is no supply of power or the need for power is less such as on construction sites camps. These generators are sufficient for lighting and to run appliances like televisions, refrigerators, sump pumps and furnaces.

Generators are available in varying size and output power. The choice of buying the right type of generator depends upon a number of factors such as the wattage capacity, voltage ratings, fuel type, fuel efficiency, noise level, portability and price.

Generators for home use most often run on fuels such as gasoline, diesel, natural gas or propane. Each has its own advantages and disadvantages. Gasoline is inexpensive and easily available. Gasoline generators gives the most power per weight unit but require frequent maintenance. It is also noisy, emits harmful carbon monoxide and the engine wears faster than diesel, propane or natural gas generators.

Diesel is easy to acquire but is comparatively more expensive. Diesel generators require less maintenance and are fuel-efficient. Its disadvantage is that it is noisier, emits more smoke and smells, and harder to start in cold weather.

Propane is expensive and is feasible for homeowners who already have a storage tank to store propane. Propane generators require less maintenance, has no condensation and no problem starting up in cold weather like the gasoline generators. However, propane gas or natural gas generators consume more fuel per kilowatt of power produced than diesel generators. Natural gas generators are the most convenient to use as there is continuous supply of fuel. They can be connected to home gas lines.

A generator should always be used according to the guidelines provided by the manufacturer. Care should be taken to see that the generator is not overloaded. A heavy-duty extension cord must be used to connect appliances to the generator. A qualified electrician must be called in to install a transfer switch to plug the generator to the home wiring system. Refueling the generator when in operation should be avoided. Spilling of fuel on the heated components may cause fire.

Smaller generators can meet most of the basic power needs of a homeowner. Buying a larger generator will consume more fuel to power the same appliances that a smaller generator could. A 5-kilowatt portable generator can power main lights, televisions, sump pumps and refrigerators. Generators of higher wattage capacity are also available according to the needs of the individual house owner. Commercial establishments may need standby generators having an output capacity of more than 200 KW and supplying three-phase power, that is, 120, 240, 480 volts.

It is always wise to invest in good quality generators. All brands and models of generators are listed on the -- a very convenient way to find the best deal.


Generators


Gasoline



Gasoline

Generators



Generators
Generators



Gasoline

Sunday, March 31, 2013

The Relative Efficiency of Gasoline, Natural Gas, and Propane Fuels For Back-Up Generators

The Relative Efficiency of Gasoline, Natural Gas, and Propane Fuels For Back-Up Generators





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When purchasing a generator as a back-up power supply for your home, one thing to consider is which type of fuel you will be using.  While there are several other important factors when buying a generator, this article is only concerned with the method of comparing the relative efficiency between gasoline, natural gas and propane.

The first thing to understand is the equivalent ratio of energy output for the three fuels as expressed in BTUs, the commonly used unit of energy.  The following table will demonstrate:

Gasoline 1 gallon = 125,000 BTUs Natural Gas 1 CCF = 100,015 BTUs (CCF=100 cubic feet) Propane 1 gallon = 91,700 BTUsYou can see from above that 1 gallon of gasoline is more efficient than 100 cubic feet of natural gas or 1 gallon or propane.  In fact, the ratio is approximately:

1 gasoline = 1.25 CCF natural gas = 1.36 gallons propaneIn other words, you would need 1.36 gallons of propane to produce the equivalent BTUs of 1 gallon of gasoline; or, 1.25 CCF of natural gas.

As a practical example let's say that gasoline is currently .85 a gallon, natural gas $.95 per CCF, and propane .00 a gallon (these are today's prices where I live). Next, my generator uses 10 gallons of gasoline a day if run continuously for 24 hours.  Therefore, for one day's usage I need:

10 gallons of gasoline, or 10 x 1.25 CCF of gas, or 10 x 1.36 gallons of propane
10 gallons of gasoline, or 12.5 CCF of gas, or 13.6 gallons of propaneIf we then enter the prices:

(.65) x (10) for gasoline; ($.95) x (12.5) for natural gas; or, (.00) x (13.6) for propaneThe cost for running the generator 24 hours is:

.50 for gasoline; .88 for natural gas; or, .40 for propaneAs you can see, once you know the relative efficiency of the three fuels you can just plug in the current prices of the fuels to calculate the daily cost of running your generator for each fuel. However, in the case of propane, the cost per gallon can vary widely depending on the number of gallons purchased.  In the example above, .00 a gallon was for filling up a small 4-5 gallon container; for larger purchases the price can decrease substantially.

If you are thinking of buying a generator it is best to consider more than just the initial purchase price.  If you will be using it for extended periods of time it could be cheaper in the long run to buy a generator capable of running on alternative fuels.


The Relative Efficiency of Gasoline, Natural Gas, and Propane Fuels For Back-Up Generators


Gasoline



Gasoline

The Relative Efficiency of Gasoline, Natural Gas, and Propane Fuels For Back-Up Generators



The Relative Efficiency of Gasoline, Natural Gas, and Propane Fuels For Back-Up Generators
The Relative Efficiency of Gasoline, Natural Gas, and Propane Fuels For Back-Up Generators



Gasoline