Water Horsepower (WHP) Calculator
Calculate water horsepower (WHP) easily using flow rate and head. Find the true hydraulic power needed to move water efficiently in pumps and irrigation systems...
water horsepower calculator:
The Water Horsepower Calculator takes a few seconds to convert flow rate and head into water horsepower (WHP), the pure hydraulic power needed to pump water. The flow rate (GPM) and head (ft), and the tool calculates automatically the WHP on the formula WHP = (Q × H × SG)/3960. It is perfect for choosing the pump capacity, analyzing the use of energy, and the design of water systems.
Source Voltage Tools formula
The Source Voltage Calculator determines the required voltage of a power source to maintain proper load voltage in DC and AC circuits. Using the formula:
\[ V_{source}=V_{load} + I \times R \]
where Vsource is the source voltage, Vload is the voltage at the load, I is the current through the circuit, and R is the total series resistance (or impedance in AC circuits).
This tool is essential for electrical engineers, technicians, and students to design and analyze circuits, calculate voltage drops, and ensure proper operation of electrical devices. The calculator works for both DC and AC circuits, including resistive and reactive loads, providing accurate source voltage values for a given load and circuit conditions.
Work & Installation — Input to Output Summary
Work:
- Calculates source voltage for DC and AC circuits.
- Supports resistive and reactive loads.
- Useful for voltage drop analysis, load design, and circuit reliability.
Installation:
- Add HTML input fields for load voltage (V_load), current (I), and series resistance/impedance (R).
- Include JavaScript formula: V_source = V_load + I × R
- Display output in volts (V).
Input:
- Load Voltage (V_load, V)
- Current (I, A)
- Series Resistance / Impedance (R, Ω)
- Circuit Type: DC / AC
Output:
- Source Voltage (V_source, V)
Testing and Final Adjustments
Test with example circuits: DC load V_load = 12 V, I = 2 A, R = 0.5 Ω → V_source = 13 V. For AC, include resistive and reactive loads: V_load = 230 V, I = 10 A, R = 5 Ω → V_source = 280 V (considering impedance). Verify unit consistency, decimal precision, and rounding. Include input validation to prevent negative or zero values. Optimize for real-time calculation as values are entered. Test responsiveness across desktop and mobile devices. Optionally, include voltage drop percentage display. After verification, finalize layout, tooltips, and responsive design for engineering, educational, and professional use.
Frequently Asked Questions - Water Horsepower (WHP) Calculator:
What is water horsepower (WHP)?
Water horsepower is the theoretical power required to move water at a specific flow rate and head, excluding pump losses.
What is the WHP formula?
WHP = (Flow × Head × Specific Gravity) / 3960 when flow is in GPM and head in feet.
Why divide by 3960 in the WHP formula?
3960 is a constant that converts GPM × ft-lbf/min to horsepower.
How do you find brake horsepower (BHP)?
Divide WHP by pump efficiency: BHP = WHP / η.
Can this calculator be used for fluids other than water?
Yes, adjust specific gravity (SG) to match the fluid’s density.
What are common WHP units?
WHP is measured in horsepower (HP), though metric conversions to kilowatts (kW) are possible.
How accurate is WHP compared to BHP?
WHP is theoretical; actual BHP is higher due to pump and motor inefficiencies.
What if flow is in L/s or m³/h?
Convert to GPM before applying the formula or use a built-in converter.
How does pump efficiency affect WHP?
Higher efficiency reduces the required input power to achieve the same WHP.
Why use WHP in system design?
It helps determine pump sizing, energy costs, and hydraulic system performance.
