Matching their lifestyle

This week’s post comes from Bob McClain, Franklin Electric’s Technical Specialist, Drives & Controls

Just a few decades ago, the average new home was around 1,000 square feet, had three bedrooms and one bathroom (one and a half baths if it was an “upscale home”). The typical day consisted of dad getting up, showering, going to work and mom spending the day getting the kids off to school, doing some laundry during the day, and hand washing the dishes after dinner.

Fast forward to today. The average new home is more than twice as large, even though we have fewer children. There are at least 4 bedrooms, with 4 to 5 bathrooms. Mom, dad and the kids all get up in the morning within an hour of each other and take showers before heading out the door for work, school, or daycare. Then, the water system probably isn’t used for the next 8 to 9 hours. But come evening, it’s showers for everyone after ball practice, along with running the dishwasher and washing machine. Throw in lawn irrigation or a geothermal system, and you see that today’s water system needs are nowhere near what they were like just a few decades ago. Not only are the total requirements greater, but water demand is far more driven by peak demand.

So, more than ever before, it’s not a matter of how much, but how much when. An extreme example really illustrates this – On average, each person in North America uses 105 gallons of water per day. Doing some quick math, a 3 gallon per minute well and pump can produce 4,320 gallons per day. That’s enough water to supply a home of 41 people, but unless water the supply is very limited, no one installs 3 GPM pumps. The reason of course, has more to do with our lifestyles than it does with the math.

So, we have to size our water systems based on the consumer’s lifestyle, and especially focus on that one hour in the morning and those three to four hours in the evening. This is where constant pressure, variable speed systems really shine. By matching the performance of the water system to the demand placed on it, these systems provide the water delivery that your customers demand and matches their lifestyle. That’s a good deal for them and for you.

The best deal they will ever see

This post was originally published last April. Since we received so many good comments on it at the time, we thought it was worth a repeat, in case you missed it the first time.  

Here’s a question that more of us should know the answer to. How much water can you get for $1?

With a submersible water system, it’s easy to figure out. We just need to know 3 things:

  1. The GPM delivered by the pump
  2. The power consumption of the motor
  3. The price of electricity

For our example, we’ll use the most common unit in the United States, a ½ horsepower, 10 GPM pump. We can ignore whether it’s 2- or 3-wire, since the power consumption is identical for both units.

From page 13 of the Franklin Electic AIM Manual, the power consumption of a ½ hp motor is 0.96 kilowatts. But, we pay for electricity in terms of kilowatt-hours. That is, the number of kilowatts multiplied by the number of hours we used those kilowatts. So, if we run that ½ pump for 1 hour, we’ll consume 0.96 kilowatt-hours (0.96 kilowatts x 1 hour).

According to the latest figures from the US Department of Energy, the average retail price of electricity in the US is 9.7 cents per kilowatt-hour. To keep the math simple, we’ll just round that to 10 cents.

So, putting it all together, if we run that pump for 1 hour, we’ll pay:

0.96 kilowatt-hours x 10 cents per kilowatt-hour x 1 hour = 9.6 cents

To get to $1, we would need run the pump about 10.4 hours:

0.96 kilowatt-hours x 10 cents per kilowatt-hour x 10.4 hours = $1.00

That 10.4 hours converts into 624 minutes (10.4 hours x 60 minutes). With our 10 GPM pump, that would mean 6,240 gallons for a dollar.

So, for $1, we provided over 6000 gallons of cool, clean, fresh well water. You can run the same exercise with different ratings of motors and pumps. But, no matter what, your customers will never find a better deal anywhere.

The deal of a lifetime…

The deal of a lifetime …

Here’s a question that more of us should know the answer. How much water can you get for $1?

With a submersible water system, it’s easy to figure out. We just need to know 3 things:

  1. The GPM delivered by the pump
  2. The power consumption of the motor turning that pump
  3. The price of electricity.

For our example, we’ll use the most common unit in the United States, a ½ horsepower, 10 GPM pump. We can ignore whether its 2- or 3-wire, since the power consumption is identical for both units.

From page 13 of the Franklin Electic AIM Manual, the power consumption of a ½ hp motor is 0.96 kilowatts. But, we pay for electricity in terms of kilowatt-hours. That is, the number of kilowatts used multiplied by the number of hours we used those kilowatts. So, if we run that ½ pump for 1 hour, we’ll consume 0.96 kilowatt-hours (0.96 kilowatts x 1 hour).

According to the latest figures from the US Department of Energy, the average retail price of electricity in the US is 9.7 cents per kilowatt-hour. For the sake of keeping the math simple, we’ll just round that to 10 cents.

So, putting it all together, if we run that pump for 1 hour, we’ll pay:

0.96 kilowatt-hours x 10 cents = 9.6 cents

To get to $1, we would need run the pump about 10.4 hours, or 624 minutes (10.4 hours x 60 minutes in an hour). With our 10 GPM pump, that would mean 6,240 gallons for a dollar.

So, for $1, we provided over 6000 gallons of water. A pretty good deal, huh?