This calculation translates the heat transfer input requirement to BHP. This constant represents water being converted to steam, which is This will then tell you the boiler horsepower.
Note: To estimate the expected boiler horsepower output from the total heat input from the fuel, the overall boiler efficiency fuel-to-steam efficiency is required. Since a boiler horsepower is a measurement of energy required to convert the water to steam, we need to account for the difference between the heat input of the fuel and the efficiency of the boiler to transfer that energy to the water in order to produce steam.
This is because neither the output requirement nor boiler horsepower take the boiler efficiency into account - they are both a measurement of boiler output capacity only.
Hot water boilers do not experience any phase change in the heating process so the calculation is different than for steam boilers.
Since there are no phase changes, the latent energy is not utilized in hot water boilers. With the Specific Heat, Specific Gravity and Density values representing the properties of water, the output of this calculation will tell you the BTU.
Note: While the SH, SG and Density values are somewhat temperature dependent, the given values are good for estimation purposes when sizing a hot water boiler that uses water only as the heating medium.
The SG, SH, and Density values would change if a different medium was used a glycol mixture, oil, etc. Boiler Horsepower is defined as the thermal energy rate required to turn Public Case Studies. Members Case Studies. Boiler and Steam Improvement Opportunities.
Glossary of Terms. Conversion Factors and Calculators. Further Information. The conversions are generally accepted rules but due to the wide variety of product variance the calculations should be verified with original manufacturers specifications or system engineer. Roth Pump is not responsible for any errors in use of the calculations below.
Proper sizing of pumps, condensate units, and boiler feed water can greatly reduce installed costs and overall systems energy factor. While most condensate return pump manufacturers triple the condensate rate of their condensate return pumps due to flow loss at higher temperatures Roth Pump preferably sizes our condensate unit pump rate a double the actual condensate rate due to the regenerative pumps ability to handle hotter water more reliably than that of a typical centrifugal pump.
This allows the condensate to return at hotter temperatures to the boiler and provides an instant return on the initial investment. This is because light bulbs with greater power may damage the lamp or the fixture due to the heat they produce. In household lighting, this problem may be solved by using lamps that are not incandescent, as those generally consume considerably less power for the same brightness output.
Most manufacturers are working on improving the efficiency of appliances, as well as light bulbs. The brightness or luminosity of a light bulb depends on power and the type of bulb. It is measured in lumens.
Below is a comparison of the power of different light sources for home use, with luminous power information. It is evident from the comparison above that the LEDs require less power, thus they are more efficient in operation. A unit price for an LED light is still high compared to incandescent lights, but over the long-term use, it is cost-efficient.
Some countries implemented or are planning to implement a ban on incandescent lights because of their low energy efficiency. The power of household appliances differs by the maker and the model and they have different power while performing different types of work, but here are some examples of average and approximate values. Machines are not the only objects that can be evaluated through power.
Work produced by animals and humans can be measured using power. For example, the power of an athlete throwing a basketball can be calculated by finding the force, with which she propels the ball for a given distance and the time during which she completes this work.
For example, this calculator shows that a person cm tall and weighing 70 kg will produce a power output of Some athletes use special devices for these calculations, record their performance with respect to power output, and then analyze it to determine the effectiveness of their workout program.
Power can be measured by a special device, a dynamometer. Dynamometers can also measure torque and force. They can have a range of applications, from engineering to the medical field. For example, dynamometers can help measure and evaluate the power output of engines. There are two types of dynamometers, the engine, and the chassis type. Engine dynamometers can only work with engines, taken out of the vehicle or machine, but they are more accurate.
Chassis ones can be used more easily, but are less accurate and more expensive. Dynamometers can also be used to calculate the strength of people for sports or medical reasons.
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