Without using the table for getting thermal efficiency of fins, how to derive the formula? 1. Find derivatives x'(t) and y'(t) algebraically. 2. Write a MATLAB function that calculate derivatives x'(t) and y'(t) numerically with the central finite diffe...
How to Calculate Power Factor To calculate power factor, you need a power quality analyzer or power analyzer that measures both working power (kW) and apparent power (kVA). With this data, you can calculate the ratio of kW/kVA. Power Factor Formula The power factor formula can be expressed...
How to calculate quantum efficiency of solar cell Quantum Efficiency of Solar Cell: Solar cells are devices that have the ability to convert the energy of a light beam into electrical energy. Usually, semiconducting materials (like Si) are used in solar cell panels under the form of a reversed...
This force creates a torque on the lug nut, which tends to turn the lug nut. English units of torque are pound-inches or pound-feet; the SI unit is the Newton-meter. Notice that the torque units contain a distance and a force. To calculate the torque, you just multiply the force by...
To calculate the power that your installation needs, in addition to the surface area, the installer will take into consideration: The environmental conditions of humidity and temperature. The thermal insulation of the home. The better the insulation, the lower the power required by your equipment...
Power distribution systems.These systems only give off a portion of their stated power usage as heat, so use this formula to calculate its heat output:(0.02 x power system rating) + (0.02 x total IT load power). Voice over IP (VoIP) routers.Up to one-third of aVoIProuter's power cons...
There are plenty of industry terms to keep track of when you’re shopping for solar and net metering is among the most important. Also referred... Read More Are Solar Panels Worth It? Calculate Your Return on Investment Are solar panels worth it? Over the past decade, solar panels have ...
An air conditioner's BTU (for British Thermal Unit) rating is a measure of its cooling power. An 8,000 BTU window unit, for instance, can typically cool a room of 300 to 350 square feet, according to the California Energy Commission.
To calculate the amount of power a turbine can actually generate from the wind, you need to know the wind speed at the turbine site and the turbine power rating. Most large turbines produce their maximum power at wind speeds around 15 meters per second (33 mph). Considering steady wind spe...
How to calculate the payback of test tools Energy efficiency Now that budgets and staff are smaller, it's not uncommon for management to ask for justification before authorizing tool purchases. The key phrase here is return on investment (ROI), or how long will it take to save enough money...