Text book definition: The probability that a particular piece of equipment will come on at the time of the facility's peak load. It is the ratio of the sum of the individual non-coincident maximum demands of various subdivisions of the system to the maximum demand of the complete system. The diversity factor is always greater than 1. The (unofficial) term diversity, as distinguished from diversity factor refers to the percent of time available that a machine, piece of equipment, or facility has its maximum or nominal load or demand (a 70% diversity means that the device in question operates at its nominal or maximum load level 70% of the time that it is connected and turned on).
Diversity factor is commonly used for a number of mathematics-related topics. One such instance is when completing a coordination study for a system. This diversity factor is used to estimate the load of a particular node in the system.
Diversity Factor = (Sum of Individual Max. Demand) divided by (Max. Demand on Power Station)
Now, what it means to you:
If your laundry has a 1,600 amp electrical service and has a Diversity Factor of TWO, than the sum of all “connected full load amperages” should not exceed 3,200 amps.
Another way to say the same thing is:
A diversity factor of two means, on average, that ½ of all your installed electrical machines are on line running in a full load condition.
When servicing a single 1,000 room hotel about $50,000 worth of delivery hampers are required. Hamper cost to service the largest Las Vegas properties could cost $400,000! How do you decide which hampers to purchase? There are several basic questions that need to be addressed. 1. What size hamper (P72 or BLT72 being the most common). 2. … [Read More...]
Text book definition: The probability that a particular piece of equipment will come on at the time of the facility's peak load. It is the ratio of the sum of the individual non-coincident maximum demands of various subdivisions of the system to the maximum demand of the complete system. The diversity factor is always greater than 1. The (unofficial) … [Read More...]
For any heat exchanger to approach 100% exchange efficiency it must be in a COUNTER-flow condition. The Maximum exchange efficiency while in a CO-flow state is 50%. Most shell & tube exchangers have a reversing valve. A correctly operating reversing valve takes the flow out of COUNTER-flow & places it into a CO-flow condition. The OEM’s … [Read More...]
Readers question: In a recent Hot Tip you were talking about boilers and you used the term BHP to describe the size of the boiler. Why use the “B” to describe Horsepower? There are several different measure of power where the term “horsepower” is commonly used. The following conversion chart should help. Horsepower conversions: In certain … [Read More...]
Readers question: “In a recent Hot Tip, it was recommended that all new washroom trenches be poured monolithically, was does that mean?” Monolithic means it is made from a single pour of concrete. Usually when the term monolithic is used, it is because the concrete footings and slab are poured at the same time. Sometimes footings are poured separately, … [Read More...]