What is coefficient of utilization in lighting?
Coefficient of Utilization (CU) is a measure of how much light exiting the fixture will fall on a canopy area of a certain size; CU is an important factor to consider in designing an energy efficient Controlled Environment Agriculture (CEA) facility.
What is utilization factor in DIALux?
Fig. In DIALux the utilisation factor method is defined by the CIE to determine roughly the right number of luminaires for all luminaire arrangements. By using this method the expected initial illuminance as well as the maintained illuminance is indicated.
How do you calculate utilization?
So what’s the best way to calculate utilization rate? The basic formula is pretty simple: it’s the number of billable hours divided by the total number of available hours (x 100). So, if an employee billed for 32 hours from a 40-hour week, they would have a utilization rate of 80%.
What is utilization factor in electrical?
In electrical engineering, utilization factor, , is the ratio of the maximum load which could be drawn to the rated capacity of the system. This is closely related to the concept of Load factor.
What is RCR in lighting?
Room Cavity Ratio (RCR) LIGHTING: A shape factor (for a room, etc.) used in lighting calculations. RCR = 5H (L+W) / L x W, or, alternately, RCR = (2.5) Total Wall Area / Floor Area.
How do you calculate lighting for a room?
Multiply the width by the length for each room or room segment, if applicable. Multiply the result by 1.5 to determine the estimated watts to sufficiently light a room. For example, for a room 10 feet wide by 12 feet long, multiply 10 times 12 to get 120, then multiply by 1.5 to get 180 watts.
What is capacity utilization formula?
The capacity utilization rate of a company or a national economy may be measured in order to provide insight into how well it is reaching its potential. The formula for finding the rate is: (Actual Output / Potential Output ) x 100 = Capacity Utilization Rate.