First estimate of pumping rate Calculator

✖Transmissivity is the rate at which groundwater flows horizontally through an aquifer or the degree to which a medium allows something, in particular electromagnetic radiation, to pass through it.ⓘ Transmissivity [T]			+10% -10%
✖Drawdown Across One Log Cycle from Time-drawdown graphs.ⓘ Drawdown Across One Log Cycle [Δs]			+10% -10%

✖First Estimate of the Pumping Rate is the actual volumetric pumping rate.ⓘ First estimate of pumping rate [Q_e]

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Formula

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First estimate of pumping rate

Formula

`"Q"_{"e"} = 2.7*"T"*"Δs"`

Example

`"1323.135m³/s"=2.7*"11m²/s"*"44.55"`

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First estimate of pumping rate Solution

STEP 0: Pre-Calculation Summary

Formula Used

First Estimate of the Pumping Rate = 2.7*Transmissivity*Drawdown Across One Log Cycle
Q_e = 2.7*T*Δs
This formula uses 3 Variables

Variables Used

First Estimate of the Pumping Rate - (Measured in Cubic Meter per Second) - First Estimate of the Pumping Rate is the actual volumetric pumping rate.
Transmissivity - (Measured in Square Meter per Second) - Transmissivity is the rate at which groundwater flows horizontally through an aquifer or the degree to which a medium allows something, in particular electromagnetic radiation, to pass through it.
Drawdown Across One Log Cycle - Drawdown Across One Log Cycle from Time-drawdown graphs.

STEP 1: Convert Input(s) to Base Unit

Transmissivity: 11 Square Meter per Second --> 11 Square Meter per Second No Conversion Required
Drawdown Across One Log Cycle: 44.55 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_e = 2.7*T*Δs --> 2.7*11*44.55

Evaluating ... ...

Q_e = 1323.135

STEP 3: Convert Result to Output's Unit

1323.135 Cubic Meter per Second --> No Conversion Required

FINAL ANSWER

1323.135 Cubic Meter per Second <-- First Estimate of the Pumping Rate

(Calculation completed in 00.020 seconds)

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Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has created this Calculator and 2000+ more calculators!

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NSS College of Engineering (NSSCE), Palakkad

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< 6 Well-Field Design Calculators

Distance from Pumping Well

Go Distance from Pumping Well to Point Intersection = sqrt(2.25*Transmissivity*Time/Storage Coefficient (Well-Field Design))

Storage coefficient given distance from pumping well

Go Storage Coefficient (Well-Field Design) = (2.25*Transmissivity*Time)/(Distance from Pumping Well to Point Intersection^2)

Transmissivity given distance from pumping well

Go Transmissivity = Distance from Pumping Well to Point Intersection^2*Storage Coefficient (Well-Field Design)/(2.25*Time)

Drawdown across one log cycle given first estimate of pumping rate

Go Drawdown Across One Log Cycle = First Estimate of the Pumping Rate/(2.7*Transmissivity)

Transmissivity for first estimate of pumping rate

Go Transmissivity = First Estimate of the Pumping Rate/(2.7*Drawdown Across One Log Cycle)

First estimate of pumping rate

Go First Estimate of the Pumping Rate = 2.7*Transmissivity*Drawdown Across One Log Cycle

First estimate of pumping rate Formula

First Estimate of the Pumping Rate = 2.7*Transmissivity*Drawdown Across One Log Cycle
Q_e = 2.7*T*Δs

What is Pumping Rate?

Pumping Rate is the actual (or maximum desired, if constraints are to be applied) volumetric pumping rate (negative for withdrawal or positive for injection) at the well .

How to Calculate First estimate of pumping rate?

First estimate of pumping rate calculator uses First Estimate of the Pumping Rate = 2.7*Transmissivity*Drawdown Across One Log Cycle to calculate the First Estimate of the Pumping Rate, The First estimate of pumping rate is to provide sufficient pressure to overcome the operating pressure of the system to move fluid at a required flow rate. First Estimate of the Pumping Rate is denoted by Q_e symbol.

How to calculate First estimate of pumping rate using this online calculator? To use this online calculator for First estimate of pumping rate, enter Transmissivity (T) & Drawdown Across One Log Cycle (Δs) and hit the calculate button. Here is how the First estimate of pumping rate calculation can be explained with given input values -> 1323.135 = 2.7*11*44.55.

FAQ

What is First estimate of pumping rate?

The First estimate of pumping rate is to provide sufficient pressure to overcome the operating pressure of the system to move fluid at a required flow rate and is represented as Q_e = 2.7*T*Δs or First Estimate of the Pumping Rate = 2.7*Transmissivity*Drawdown Across One Log Cycle. Transmissivity is the rate at which groundwater flows horizontally through an aquifer or the degree to which a medium allows something, in particular electromagnetic radiation, to pass through it & Drawdown Across One Log Cycle from Time-drawdown graphs.

How to calculate First estimate of pumping rate?

The First estimate of pumping rate is to provide sufficient pressure to overcome the operating pressure of the system to move fluid at a required flow rate is calculated using First Estimate of the Pumping Rate = 2.7*Transmissivity*Drawdown Across One Log Cycle. To calculate First estimate of pumping rate, you need Transmissivity (T) & Drawdown Across One Log Cycle (Δs). With our tool, you need to enter the respective value for Transmissivity & Drawdown Across One Log Cycle and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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