Purpose



EWB@WSU: Campbell Farm

Yakama, WA Indian Reservation

Pump Selection Outline

Surveying: Joshua Horky and Alex McDonald

Demand Study, Head Calculations & Surveying Calculations: Joshua Horky

CAD Drawings, System Compilation, & Final Pump Selection: Alex McDonald

Edited By: Alex McDonald



June 15, 2005

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Table of Contents

I. Introduction……………………………………………………………………3-4

a. Fig 1: Proposed Potable Waterline

b. Fig 2: Potable Well System Schematic

II. Demand Study………………………………………………………………5-10

a. Campbell Farm Water System Statistics

b. Fig 3: Diurnal Demand Curve

c. Demand Estimate for Current Population

d. Demand Estimate for Population Expansion

e. Results

i. Fig 4: Population Demand Curve 60 gpcpd

ii. Fig 5: Consumption rate Demand Curve pop. of 64

iii. Fig 6: Consumption rate Demand Curve pop. of 83

f. Demand Summary

III. Determining Head…………………………………………………………...11-14

a. Theoretical Basis

b. Fig 7: Total Head Diagram

c. Calculations Summary

d. Discussion

e. Total Head Calculation

IV. About SQE Pumps…………………………………………………………..15-22

a. Theoretical Basis

b. Reading Typical Pump Curves

i. Fig 8: Typical Pump Curve Demonstration

c. Reading Grundfos Pump Curves

i. Fig 9: Typical Pump Curve Demonstration

d. Max Production

i. 10 SQE05B-200

1. Fig 10: 10 SQE05B-200 at max production

ii. 15 SQE07B-180

1. Fig 11: 15 SQE07B-180 at max production

e. Pressure Range

i. 10 SQE05B-200

1. Fig 12: 10 SQE05B-200 at 10 GPM

ii. 15 SQE07B-180

1. Fig 13: 15 SQE07B-180 at 10 GPM

f. Variable Pressure

g. Using the CU 301

i. Fig 14: CU 301 Control Box

V. Pump Selection………………………………………………………………22-25

a. Pressure Tank

b. Grundfos SQE Series

i. Fig 15: System Design

c. Pump Specifications

i. Fig 16: SQE Cutaway

d. Projected Cost

VI. Special Thanks………………………………………………………………26-27

VII. Works Cited………………………………………………………………….....28

I) Introduction

Directors of Campbell Farm, David Hacker and Sheri, have enlisted the help of EWB@WSU to design and implement a new potable well system. The system is designed per the specifications of the Washington Department of Health (DOH) permit process for Group A-TNC systems.

The Campbell Farm is a Presbyterian non-profit organization that serves as a mission station, hosting people from across the country that come to participate in service projects on the Yakama Indian Reservation.

Danish pump manufacturer Grundfos comes highly recommended by faculty associated with Engineers Without Borders at Washington State University for their quality of product and solid warranty, and thus are the pumps reviewed.

The purpose of this paper is to compile a list of appropriate well pumps for the Campbell Farm potable well system, and demonstrate the reason they were chosen. Pump selection has been based on the head required to transport water from its location at the bottom of the well to the top of a 3/4 in PVC waterline raised 17 ft above ground. It is assumed that all horizontal mainline water extensions from the Flexcon bladder tank will be using 2-inch PVC piping to minimize headloss due to friction. This discovery is to be communicated in this paper. It is expected that the Campbell Farm and Youth Education Services should be able to select a pump based on the information in the following pages. Figures 1 and 2 have been included to help illustrate the total system design for the Campbell Farm well system.

Fig 1: Draft of the Campbell Farm’s proposed potable waterline, pipeline shown in blue

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Fig 2: Draft of the Campbell Farm’s potable well system schematic by EWB@WSU.*

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*Note: Insulation/heating of the 4.5 gallon pressure tank, chlorination, and the complete design of the pump house for the well system is yet to be determined, and therefore subject to change. Chlorination may not be required, and will be determined upon the completion of water testing by Cascade Analytical. Pump house schematics are not required for the DOH permit application.

II) Demand Study

Campbell Farm Water System Statistics:

Variables provided by the Campbell Farm

Current Usage

1. Farm House

a. 2 Full Baths (sink, toilet, shower)

b. 1 Kitchen

c. 5 people Year Round

d. 2 additional People in summer

2. Trailer

a. 1 Full Bath

b. 1 Kitchen

c. 2 People Year Round

3. Peach Haven

a. 1 Full Bath

b. 1 Kitchen

c. 8-10 People maximum temporary guests

4. Spitzenburg

a. 1 Full Bath

b. 1 Kitchen

c. 12-14 People maximum temporary guests

5. Hop kiln

a. 5 Baths (one with 2 sinks, 3 stalls, and 2 showers)

b. 1 Commercial Kitchen

c. 1 Kitchen in apartment

d. 29 People Temporary Guests

e. 2 People in Apt Year Round

Expansion

1. 2 Additional Staff Houses

a. 1 Full Bath each

b. 1 Full Kitchen each

c. 2 People each year round

2. 9 Temporary Guest Houses (20X20 in size)

a. 5 Houses with Full Bathrooms for 8 people each

b. 4 For families (2-4 people) with Full Bathrooms, Kitchenettes (sink, microwave, small refrigerator)

3. Chapel

a. Public Restrooms with a couple stalls and sinks each for men and women

4. Conference Building

a. Commercial Kitchen

b. Public Restrooms with 4 sinks and stalls, and shower each for men and women

Fig 3: Diurnal Demand Curve used for Campbell Farm’s projected Total GPM Demand. Curve produced by the American Water Works Association (AWWA).

The diurnal curve used to project the Total GPM Demand for extended period simulations was assumed to be equivalent to the American Water Works Association (AWWA) curve shown in Figure 3.

Diurnal curve is used as follows:

1. The horizontal axis represents a 24-hour time period.

2. The vertical axis represents a system multiplier.

3. A determined average system demand is set to the 1.0 multiplier on the graph. System demand averages are based on gallons per capita per day as rated by an individual’s type of residency – or how long a person lives on the Campbell Farm, and what waterworks activities they are expected to perform.

4. Then the average demand is multiplied by the highest point on the curve. It is important to multiply it by the highest peak, because that is the rate at which the demand on the Farm’s water system is at its highest. This value is 175% of the average of estimated gallons per day consumption of the Farm.

5. The peak value is then converted into gallons per minute through simple unit conversion.

6. All components of the system must be able to perform at that peak level – i.e. a pump must be able to meet the highest demanded flow in order for it to be able to operate at all times.

7. Demonstrations of this process are found on page 7 (detailing current demand) and page 8 (detailing expansion demand). Graphs of the current demand are included on pages 9 and 10.

Demand Estimate for Current Campbell Farm Population

|Given: | | | | |

| |Current | | | |

| | |full time |9 |people |

| | |seasonal |55 |people |

|Total | | |64 | |

| | | | | |

|Also |1 commercial Kitchen | |

| |2 sets of public restrooms, including 1 shower |

| | | | | |

|Find: |Average flow per day | | |

| |Peak flow per hour | | |

| | | | | |

|Assumptions: | | | | |

| |gpcpd = |100 |full time staff/permanent residents |

| |gpcpd = |60 |seasonal campers/non-permanent residents |

| | | | | |

| | | | | |

| | | | | |

|Solution: | | | | |

| |average flow per day = |4200 |gallons |

| |peak flow per hour = |175 |% of average daily flow |

| | |= |7350 |gallons/day |

| |Q1 |= |5.1 |gallons/minute |

Demand Estimate for Campbell Farm’s Population Expansion

|Given: | | | | | |

| |Current | | | | |

| | |full time |9 |people | |

| | |seasonal |55 |people |64 |

| |Expansion | | | |

| | |Full time |4 |people | |

| | |seasonal |56 |people |60 |

| | | | | | |

|Total |124 people | | | |

| | | | | | |

|Also |1 commercial Kitchen | | |

| |2 sets of public restrooms, including 1 shower |

| | | | | | |

|Find: |Average flow per day | | | |

| |Peak flow per hour | | | |

| | | | | | |

|Assumptions: | | | | | |

| |gpcpd = |100 |full time staff/permanent residents |

| |gpcpd = |60 |seasonal campers/non-permanent residents |

| | | | | | |

| | | | | | |

| | | | | | |

|Solution: | | | | | |

| |average flow per day = |7960 |gallons | |

| |peak flow per hour = |175 |% of average daily flow |

| | |= |13930 |gallons/day |

| |Q2 |= |9.7 |gallons/minute |

Results: (gpcpd = gallons per capita per day). Figures 4, 5, and 6 (placed below) are graphical representations of simulations run using current demand estimates from page 7.

Fig 4: Population Demand Curve assuming 60 gpcpd

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Figure 4 shows how water demand increases as a function of population when the rate at which a person utilizes water is assumed to 60 gpcpd. The horizontal, solid, red line represents the maximum amount of water that can be legally removed from the ground each day because of current permitting limitations. This corresponds to a maximum population of 83 people, which meets the 5000 gallons per day DOH requirement.

Fig 5: Consumption rate Demand Curve assuming a population of 64 (current pop.)

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Figure 5 shows how demand increases as a function of rate of personal utilization of water when the population is assumed to be 64 people (the current maximum seasonal population). Again, the red line represents the legal limit and here corresponds to 78 gpcpd.

Fig 6: Consumption rate Demand Curve assuming a population of 83 (max legal at 60gpcpd)

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Figure 6 shows how demand increases as a function of rate of personal utilization of water when the population is assumed to be 83 people (the maximum anticipated seasonal population after expansion). Yet again, the red line represents the legal limit and here corresponds to 60 gpcpd

Demand Summary:

According to the DOH, the standard rate of consumption is 100 gpcpd (gallons per capita per day). This number has been reduced to 60 gpcpd for non-residents because of the anticipated lower consumption rate of the campers (laundry, etc is done at home by guests).

The following is in regards to the demand estimates on pages 7 and 8:

The daily consumption rate has been kept below 5000 gallons/day for the current camp size because a daily rate beyond 5000 gallons/day will require the farm to obtain a water right from the Washington State Department of Ecology, which is not likely to happen before the project must be completed this summer (2005). The proposed demands allow the camp to carry on at its present size and demand without obtaining additional water rights.

The system currently demands 4200 gallons/day and a peak supply rate of 5.1 GPM. The expanded system will demand 7960 gallons/day and a peak supply rate of 9.7 GPM. These are the basic demands which must be considered in the feasibility study.

Q1 (current system demand) = 5.1 GPM

Q2 (expansion system demand) = 9.7 GPM

Therefore Q (total system demand) is less than 10 GPM or 0.02228 ft3/s

III) Determining Head

Theoretical Basis

Water does not move itself from a low elevation to a relatively high elevation--this requires energy. This energy can be added to hydraulic systems through a pump. A pump is expected to be lowered into the well and will receive energy in the form of electricity to be transmitted to the water mechanically. This can be communicated mathematically in the following equation.

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Where:

E1 is the energy of the water in at the bottom of the well

E2 is the energy of the water at the top of the 0.75 in pipe raised 17 ft in the air

wshaftin is the work done on the water by the pump

The calculations included in this paper facilitate determination of the work required from the pump to move the water to the second energy level E2.

The pump demand is primarily based upon two (2) things:

1. Q (flow measured in units of volume per unit time i.e. g/m, m3/s, or ft3/s)

2. H (energy measured in units of distance i.e. m or ft)

Work can be expressed in feet of water because (p = ρgh)

The required head is a function of several things:

• Required elevation differential

• Required pressure differential

• Required velocity differential

• Headloss in system

o Minor losses (due to valves, bends, diameter changes, etc.)

o Major losses (due to friction)

o Major and minor losses are calculated with a spreadsheet prepared previously attached here.

The Q – Campbell Farm’s total system demand – has been determined by a previous demand study by EWB@WSU (please see Demand Study pages 5-10) to be less than 10 gallons per minute (GPM) or 0.02228 ft3/s. From the estimated Q value and the assumptions made from Fig 3: Total Head Diagram, pages 11-13 will demonstrate how to determine the value of H – total head required by the pump to operate.

Fig 7: Total Head Diagram used for calculating head created by EWB@WSU

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Calculations Summary

The required elevation differential is a function of the depth of the well, the minimum predicted static level of water in the well, and the height of the water in the storage tank.

Minimum static level of water = 17 ft below waterline

Pump depth = 90 ft below waterline

Height of water in Hop Kiln = 20 ft above waterline

Total elevation differential = 90 ft + 20 ft = 110 ft

Required pressure differential depends on the pressure at the pump in the bottom of the well and upon the pressure required at the top of the 0.75 in PVC line. The pressure at the bottom of the well is a function of the height of the water above the pump in the well. The pump is to be placed 90 feet below the waterline and the static water level may drop as low as 17 ft below the waterline. The water is to be pumped to 20 ft above the waterline. The pressure at the pump is 110 ft - 37 ft = 73 ft. The required pressure at the top of the 0.75 in PVC line is 60 PSI = (~2.307) (60) = ~ 138 ft.

Total pressure differential = 138 ft - 73 ft = 65 ft

The required velocity differential is zero (0) since the water is to be at rest in the bladder tank.

The headloss due to friction is a function of the length, diameter, and material of the pipe as well as the flow through it. The total length of the potable pipe system is approximately 446 ft. The friction fluctuates based on the pipeline’s various inner diameters (which are different than their ratings) and the 10 GPM of water flowing though them. The headloss due to friction has been determined to be ~6 ft by the spreadsheet attached above.

Total headloss due to friction = 6 ft

The headloss due to fittings in the pump house is comprised of the gate valves, pressure release valve, water meter, pressure/bladder tank, and pressure transducer. Negligible headloss from the pressure tank, because it acts as a burp tank to absorb back pressure. The pressure transducer creates negligible loss because it detects pressure via a spring loaded system that T’s into the pipeline, creating a small dimple on the line – which is insignificant for this system. The gate valves 0.16 ft of head between them. Thus, the total head from this system is too low to count.

The headloss due to bends, diameter changes, and other constraints is a function of velocity, diameter, and k values. The system is conservatively assumed to have seven 90˚ threaded bends of varying diameters which have been determined to cost ~1 ft of head for the bends and ~1 ft of head for the diameter change (by the spreadsheet attached above).

Total headloss due to bends, diameter and other = (1 + 1) ft = 2 ft

Discussion

The conclusions concerning head losses are approximate values. The calculations have assumed a 20 ft vertical lift above waterline at 60PSI for the 0.75 in PVC Hop Kiln. Additional losses will undoubtedly occur due to bends and friction from a greater length of the 3/4 in pipe maintained in the internal plumbing of the Hop Kiln than the 20 ft stated. However, this loss is not expected to bring the Hop Kiln’s water pressure below the Washington Department of Health’s (DOH) requirement of 30 PSI. It is assumed that all horizontal mainline water extensions from the Flexcon bladder tank will be using 2-inch PVC piping to minimize headloss due to friction.

Total Head Calculation

The total input required from the pump which must move water from the bottom of the well to the top of the 0.75 in PVC line can now be calculated and expressed.

H (total required head) = (110 + 65 + 6 + 2) ft = 183 ft

IV) About SQE Pumps

Theoretical Basis

Water does not move itself from a low elevation to a relatively high elevation--this requires energy. This energy can be added to hydraulic systems through a pump. A pump is expected to be lowered into the well and will receive energy in the form of electricity to be transmitted to the water mechanically. Selection of pumps for potable water systems is primarily based upon two (2) things:

1. Q (flow measured in units of volume per unit time i.e. g/m, m3/s, or ft3/s)

2. H (energy measured in units of distance i.e. m or ft)

According to an earlier demand study produced EWB@WSU and expansion variables provided by the Campbell Farm, the Farm will not require a flow rate over 10 GPM for its entire potable system demand before and after expansion. Selection of the Grundfos SQE pumps was based on the estimated system demand and total required head of 183 ft.

1. Q (total system demand) is less than 10 GPM.

2. H (total required head) = 183 ft

Reading Typical Pump Curves

Fig 8: Typical Pump Curve Demonstration, graph from us.

At left is an example of a typical pump curve. The H (total head required - ft) is demonstrated on the vertical axis, and the Q (total system demand – GPM) on the horizontal axis. The shaded region illustrates at what power levels the pump can operate. To read the graph, simply find system Q and H values, and find where they intersect on the graph. If your values intersect outside of the region, then they exceed the possible function of the pump. It is typically best to select a pump whose operational values are 2/3rds of the way down the curve according to Grundfos technical engineers.

Reading Grundfos Pump Curves

Fig 9: Grundfos Pump curve demonstration, graph from us.

At right is an example of a pump curve to be found on us.. The H (total head required - ft) is demonstrated on the vertical axis, and the Q (total system demand – GPM) on the horizontal axis. Below is another graph that illustrates at what power levels the pump can operate. To read the graph, simply find system Q and H values, and find where they intersect on the graph. If your values intersect outside of the region, then they exceed the possible function of the pump. It is typically best to select a pump whose operational values are 2/3rds of the way down the curve according to Grundfos technical engineers.

Below the first graph is another graph demonstrating the Grundfos pump’s power usage. It is typically best to select a pump near the peak of the power curve as that means it is operating at a high efficiency.

Max Production

When projecting required head for a pump system, the headloss due to friction and bends are proportional to the GPM a pump can provide. As the rate at which fluid is pumped increases, so does the head as a result of friction and bends. This results in a point at which a pump motor cannot push liquid any faster, and is the limiting GPM available to a select pump for a given system. Values are rounded down, as they are not accurate beyond a whole number.

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10 SQE05B-200:

Using the total head calculation process demonstrated above, it can be shown that the 10 SQE05B-200 reaches its fastest production at about 11 GPM as demonstrated in Fig 10.

Total head = (110 + 65 + 8 + 3) ft = 186 ft @ 11.5

Fig 10: 10 SQE05B-200 at max production from us.

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15 SQE07B-180:

Using the total head calculation process demonstrated above, it can be shown that the 15 SQE07B-180 reaches its max production at about 15 GPM as demonstrated in Fig 11.

Total head = (110 + 65 + 14 + 5) ft = 194 ft @ 15.7 GPM

Fig 11: 15 SQE07B-180 at max production from us.

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Summary - Max GPM Production

|Catalogue # |Max GPM* |Power (HP) |

|10 SQE05B-200 |11 |1.13 (0.939 - 1.408) |

|15 SQE07B-180 |15 |1.35 (0.939 - 1.408) |

*Note: Max GPM figures are rounded, as they are not accurate beyond a whole number, and are based on estimated values. Power values are estimates.

Pressure Range

The Grundfos CU 301 control system for the SQE style pumps offers a controlled range of 40-100 PSI for potable systems with a manual setting of plus or minus 10 PSI. The pump will start when the pressure drops to - 7 PSI below the pressure setting. The pump will run until the pressure is + 7 PSI above the pressure setting. Water pressure is directly proportional to head in that 2.307 ft of head is equal 1 PSI. In order for a pump to generate a higher water pressure, it must be able to produce the required Total GPM Demand at a higher amount of head. These are estimated available pressure ranges on a system with 183 ft of head designed @ 60 PSI on a 0.75 in pipeline 17 ft above ground level.

10 SQE05B-200:

The Farm has a total head requirement of 183 ft for 60 PSI at a total GPM demand of no more than 10 GPM. At 10 GPM, the Grundfos 10-SQE05B-200 pump would be able to produce a max of 215 ft of head as demonstrated in Fig 12. With reference to the proportionality of head to PSI as defined earlier:

(215-183) ft = 32 ft; => (32/2.307) ft = 14 PSI

(60 + 14) PSI = 74 PSI

The Grundfos CU 301 control system offers a controlled range of 40-100 PSI in steps of 10 PSI at + - 7 PSI. Thus, the 10-SQE05B-200 pump would be able to supply the Campbell Farm an additional 10 PSI for a total operational pressure range of 33-67 PSI. The pressure setting on the control box can then be set safely to 40-60 PSI.

Operational Pressure Range = 33-67 PSI rated at 10 GPM

Control Pressure Setting = 40-60 PSI rated at 10 GPM

Fig 12: 10 SQE05B-200 at 10 GPM from us.

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15 SQE07B-180:

The Farm has a total head requirement of 183 ft for 60 PSI at a total GPM demand of no more than 10 GPM. More available head is required for the

15 SQE07B-180 because At 10 GPM, the Grundfos 15 SQE07B-180, the pump would be able to produce a max of 265 ft of head as demonstrated in Fig 13. With reference to the proportionality of head to PSI as defined earlier:

(265-183) ft = 82 ft; => (82/2.307) ft = 36 PSI

(60 + 36) PSI = 96 PSI

The Grundfos CU 301 control system offers a controlled range of 40-100 PSI in steps of 10 PSI at + - 7 PSI. Thus, the 15 SQE07B-180 pump would be able to supply the Campbell Farm an additional 30 PSI for a total operational pressure range of 33-87 PSI. Then the pressure setting on the control box can be set safely to 40-80 PSI.

Operational Pressure Range = 33-87 PSI rated at 10 GPM

Control Pressure Setting = 40-80 PSI rated at 10 GPM

Fig 13: 15 SQE07B-180 at 10 GPM from us.

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Variable Pressure

The Grundfos SQE style pump system maintains a variable soft-start motor. This allows the SQE pumps to accelerate motor speed from 3000 RPM to 10700 RPM to meet system demands. David Bell – local Yakima contractor of Youth Education Services – has expressed interest in plumbing the Campbell Farm in parallel. It is assumed that all horizontal mainline water extensions from the Flexcon bladder tank will be using 2-inch PVC piping to minimize headloss due to friction.

All figures are based on the system illustrated above with an estimated available pressure range of 183 ft of head designed for 60 PSI on a 0.75 in pipeline 17 ft above ground level with an estimated demand rated at less than 10 GPM. It is not recommended that the Campbell Farm design its usage beyond these parameters with the use of the Grundfos SQE 10 or 15 pumps.

In order to maintain the calculated 60 PSI for multiple waterlines, it must be understood that parallel plumbing splits the available gallons per minute of fluid along each demanding pipeline. Each pump’s maximum available GPM is indicated by each pump’s maximum possible production at 60 PSI given the total system head calculations.

Total Available GPM

|Catalogue # |Max GPM |

|10 SQE05B-200 |11 |

|15 SQE07B-180 |15 |

Should the Campbell Farm require water pressure higher than 60 PSI, the SQE style pumps, with their CU 301 control box, will allow for a manual controlled range of 40-100 PSI with a range setting of plus or minus 10 PSI. Variable PSI settings for the 10 and 15 SQE pumps are based off of GPM demanded, and the pump’s available head production at the GPM demanded. Although the control box can be set up to 100 PSI, the pumps actual operational pressure is limited to the capabilities of the pump. The pump will start when the pressure drops to - 7 PSI below the pressure setting. The pump will run until the pressure is + 7 PSI above the pressure setting. Based off of the operational pressure calculations and the limits of the SQE, we can conclude that our actual operational pressure range is:

Operational Pressure Range

|Catalogue # |Rated at GPM |Pressure Range (PSI) |

|10 SQE05B-200 |10 |33-67 |

|15 SQE07B-180 |10 |33-87 |

Using the CU 301

The pressure range can be adjusted manually via the control box to a setting of plus or minus 10 PSI. In order to maintain the operational pressure range indicated above, the Campbell Farm shall keep their control box’s pressure setting to the following range:

Control Pressure Setting

|Catalogue # |Rated at GPM |Pressure Range (PSI) |

|10 SQE05B-200 |10 |40-60 |

|15 SQE07B-180 |10 |40-80 |

Fig 14: Picture and Data in reference to the Grundfos CU 301 control box from us.

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1. Green arrows indicate when water is flowing.

2. A run-dry alarm shows when the pump has stopped because of low water conditions.

3. You can easily boost pressure in the system for special jobs. Easily return the water pressure to normal when finished.

4. Green and red lights clearly show you whether the system is on or off.

5. For daily use, the pressure settings can be locked.

6. If the system needs repair the maintenance light provides a clear signal.

V) Pump Selection

Pressure Tank

Grundfos SQE pump systems allow users to avoid costly large water pressure tank systems. According to Raymond of Consolidated Pump and Supply (CPS) in Spokane, WA large bladder tanks do not work well with the Grundfos SQE well pumps either. Thus, the Campbell Farm’s 85 gallon Flotec bladder tank is not applicable to the current well system. It is the recommendation of CPS that the client purchase the PJR15 4.5 gallon Flexcon tank for the Farm’s well system. CPS list price for the Flexcon tank is $86.

Grundfos SQE Series

Grundfos SQE series allows for adjustable constant water pressure. If the Farm ever requires an extra boost for summer tenants, or other multiple water works, the Farm will be able to raise/lower the pressure on the control unit as needed. The Farm should take care to manage water usage as expansion is pursued, as each water connection will share the total water pressure available. When the summer sessions are over, to save on electric bills and water usage, the SQE will allow the Campbell Farm to lower the amount of water pressure needed –via the control box.

Fig 15: System Design Picture and Data adapted from us. by EWB@WSU

Grundfos SQE Maintain:

* Dry-run protection

* High efficiency pump and motor

* Protection against up-thrust

* Soft-start

* Over-voltage and under-voltage protection

* Overload protection

* Over-temperature protection

* High starting torque

* Constant pressure control

* Variable speed regulation

* Electronic control and communication

Pump Specifications

All information is from us. and EWB@WSU SQE pump analysis. Values are based on an estimated system with 183 ft of head designed @ 60 PSI on a 0.75 in pipeline 17 ft above ground level with a demand rated at 10 GPM.

|Rating |10 SQE05B-200 |15 SQE07B-180 |

|Motor type |MSE3 |MSE3 |

|Voltage (V) |230 (200-240) |230 (200-240) |

|Amperage (A) |Run : 4.9-7.6; Start: 8 |Run : 4.9-7.6; Start: 8 |

|Frequency (Hz) |60 |60 |

|Phase |Single |Single |

|Power (HP) |1 / 2 (0.939 - 1.408) |3 / 4 (0.939 - 1.408) |

|Check Valve Vertical Depth (ft) |Good for 100 ft |Good for 100 ft |

|Max GPM |11 @ 1.14 (HP) |15 @ 1.37 (HP) |

|Operational Pressure Range (PSI) |33-67 @ 10 GPM |33-87 @ 10 GPM |

|Control Box |CU 301 |CU 301 |

|Control Pressure Setting (PSI) |40-60 @ 10 GPM |40-80 @ 10 GPM |

|Copper Wire Cabling (AWG) |# 12 |# 10 |

|Variable Speed Motor (RPM) |3000 – 10700 |3000 – 10700 |

|Minimum Well Borehole |2.99 in |2.99 in |

|Size of Pumping Outlet |1.25 in NPT |1.25 in NPT |

|Cost of Pump |$986 |$1025 |

Fig 16: SQE Cutaway Picture and Data adapted from us. by EWB@WSU.

|1 |2 |3 |4 |

|1. Reliable Check Valve |2. Rugged |3. Permanent- |4. Advanced |

| |Design |Magnet Motor |Electronics |

| | | | |

|Reliable built-in spring |Pump design uses "floating" |Motors are based on a |Grundfos' own micro-frequency |

|loaded check valves allow the |impellers. Each impeller has |permanent-magnet rotor which produces|converter allows the pump to |

|farm to operate the pump |tungsten carbide/ceramic |high and flat efficiency pump curves.|control and communicate with |

|without the installation of a |bearings. This design and the |This allows the SQE to cover a wide |pumps to allow for Constant |

|check valve in the well. |high quality of materials make |power and load range with the same |Pressure Control, Soft-Start |

| |the pump very wear resistant, |motor, as compared to conventional AC|and integrated Dry-Run |

| |especially in sandy conditions.|motors. |Protection, among other |

| | | |functions. |

Projected Cost

Prices are projected market costs. Actual values may vary. Market listings are about $1000 for the pumps selected, $600 for a CU 301 control system, and $86 for the Flexcon tank. This list does not include cost of installation, or other component parts of a well system – such as the PVC line, well drilling, galvanized steel well pipe, etc. Price listings provided by: Consolidated Pump and Supply (CPS) of Spokane, WA

Estimated Cost of Grundfos Pumps

|Catalogue # |10 SQE05B-200 |15 SQE07B-180 |

|Grundfos SQE Pump | $986 | $1025 |

|CU301 control system | $600 | $600 |

|PJR15 4.5 gal Flexcon tank | +$86 | +$86 |

|Total = | $1672 | $1711 |

Due to a small cost difference, EWB@WSU recommends the purchase of the Grundfos submersible pump: 15 SQE07B-180

Washington State Department of Health requires that only licensed professionals install pumps. Rick Poulin Drilling is licensed to install Grundfos products according to Grundfos supplier Consolidated Pump and Supply in Spokane, WA. It is recommended that the Campbell Farm contact Rick Poulin about the purchase and installation of Grundfos products. If Rick Poulin Drilling is not a satisfactory option for the Campbell Farm, then another drilling company can be found and contacted by EWB@WSU.

|Rick Poulain Well Drilling |

|Name |Specialization |Contact |

|Rick Poulain |Well Drilling |509-697-4841 |

|Doug |Pump Dealer |509-728-0018 |

Please contact President of Engineers without Borders at Washington State University at (206-291-8674 cell or 425-488-1355 Seattle home) as soon as the Campbell Farm has decided which pump they would like to install.

V) Special Thanks

EWB@WSU Contributing Members

|Name |Field of Study |Contribution to Pump Report |

|Bankston, David |Mechanical Engineering |Organizational Review Paper |

|Crane, Brandon |Mechanical Engineering |Organizational Review Paper |

|Dunford, Kyler |Chemical Engineering |Storage-Sanitation Review; Permitting |

|Giesa, Ashley |Mechanical Engineering |Pump and System Design Research |

|Kirchner, Matt |Mechanical Engineering |Pump Design Research |

|Mansoori, Alireza |Electrical Engineering |Solar Pump System Research Paper |

|Morris, Aaron |Economics |Legal Issues |

|Spirog, Steve |Biochemistry |Storage and Sanitation Review |

|Westley, Dan |Civil Engineering |Trench Details and Pump House Specs |

|Zaman, Tahir |Bio-Engineering |Storage and Sanitation Review |

WSU Contributing Students

|Name |Field of Study |Organization |

|Feldner, Cliff |Electrical Engineering |Solar Decathlon – Solar and Power |

|Jesse |Computer Engineering |Linux Users Group – Website Design |

|Hash, Haven |Computer Engineering |Linux Users Group – Website Design |

Civil Firm – Private Sector

Calving George Civil PE – Taylor Engineering: Spokane, WA

EWB@WSU would like to sincerely thank Calvin George for his dedication to the project. He played an integral part in the implementation of the CAD drawings, system compilation, final pump selection, and general oversight.

Washington State University – PhD Candidates, Faculty, Professors

Mark Stone Civil PhD – WSU: Pullman, WA

EWB@WSU would like to sincerely thank Mark Stone for his dedication to the project. He played an integral part in the implementation of the site inspection, surveying procedure, demand study, head calculations, and general oversight.

Assistant Professor Dr. Mat Taylor of Arch & CM – WSU: Pullman, WA

EWB@WSU would like to sincerely thank Dr. Mat Taylor for his general oversight and guidance. His availability was crucial to the implementation of this project.

Professor Dr. Daniel Dolan of Civil Engineering – WSU: Pullman, WA

EWB@WSU would like to sincerely thank Dr. Dan Dolan for making himself available as much as possible, and was integral in laying the foundation for our design. His availability was crucial to the implementation of this project.

Assoc Prof Dr. Robert Richards of Mechanical Engineering – WSU: Pullman, WA

EWB@WSU would like to sincerely thank Dr. Robert Richards for helping students to understand how well pumps functioned, and demonstrated how to read pump curves.

Depart Chair & Prof Dr. David McLean of Civil Engineering – WSU: Pullman, WA

EWB@WSU would like to sincerely thank Dr. David McLean and the entire Civil Engineering department for the resources made available toward the project. Under his direction, his department lent surveying equipment and transportation to EWB@WSU. His donation of resources was crucial to the implementation of this project.

Vendors – Private Sector

EWB@WSU would like to sincerely thank Byron Morgan of Robertson’s Supply in Nampa, Idaho whose advice on design implementation and pump selection was crucial to the completion of this report.

EWB@WSU would like to sincerely thank Thomas of Consolidated Pump and Supply headquarters in Tacoma, WA whose advice on design implementation and pump selection was crucial to the completion of this report.

EWB@WSU would like to sincerely thank Raymond of Consolidated Pump and Supply dealership in Spokane, WA whose advice on design implementation and pump selection was crucial to the completion of this report.

EWB@WSU would like to sincerely thank the employees Energy Outfitters their advice on project design and plumbing.

Works Cited

Diurnal Demand Curve produced by:

American Water Works Association. .

Mark Stone Civil PhD WSU provided the diurnal curve, and

the Campbell Farm provided the statistics of its locale.

Head calculations and respective values are based on the principles of:

Young, Donald F, Bruce R. Munson, Theodore H. Okiishi. A Brief Introduction to: Fluid Mechanics. John Wiley & Sons, Inc: New York, 1997.

Facts, figures, diagrams, and advice regarding Grundfos pumps provided by:

SQE. Domestic Water Supply - Product catalogue, documentation and CAD drawings – Pump Solutions. Grundfos USA. .

And the engineers on staff at Grundfos technical support 800-333-1366.

System designed with consideration for the regulations of:

Office of Drinking Water, Division of Environmental Health. Washington State Department of Health. .

With advice from Mike Wilson – Klickitat and Yakima Regional P.E. – and other Regional Engineers from the Spokane, WA. Office 509-456-3115.

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