Plug all the predetermined values into the equation for Hp to calculate horsepower. For example, if the system had a pump with a known efficiency of 65 percent and the pump delivers 250 gallons per minute to a total head of 72 feet, the horsepower of the system is: \(Hp = \frac{250\...
Define a pipeline flowing system to begin the calculation. As an example, if water has to be pumped through a 2-inch Schedule 40polyvinyl chloride (PVC) pipefrom a well to a pond 400 feet away,calculatehow many gpm the system is delivering. The pressure gauge on the pipe at the well h...
There are two types of NPSH; NPSHRis the minimum pressure required to prevent cavitation, which can ruin or shorten the life your pump. This specification is provided by the manufacturer. So the type of NPSH you may be asked to calculate is NPSHA, or the absolute pressure at the pump's ...
So what is GPM, and how do you calculate it? Browse Our Pumps What Is GPM? GPM stands for gallons per minute and is a measurement of how many gallons a pump can move per minute. It is also referred to as flow rate. GPM is variable based on another measurement known as the Head,...
How to Convert CMH to BTU. The cubic meters per hour (CMH) of a heat exchanger describes the flow rate of its refrigerant through the system. The exchanger's British Thermal Units (BTUs) describe the amount of energy that it transfers. It moves this ener
Typical Sump Pump Installation & Use A sump pump is typically installed in a pit at the low end of a building's basement or crawl space floor or in another location where water needs to be removed such as in a boiler pit or an outdoor well pit. On occasion we find sump pumps insta...
If you are purchasing a property served by a private well of any sort, here are the critical questions to ask about the well itself: Where is the well located? Is the well on the property being purchased? You'll also want to know where the well equipment are located: the pump, pressur...
Define the head loss application. In this example, a water pump in the basement of a 10-story building supplies domestic water to every floor. Assuming that each floor in the building represents 12 feet of height, you can calculate the head loss due to elevation and subtract it from the ...
If using a "Fixed Flow Rate" pump, then Pipe Flow Expert will calculate the pump head required to achieve the specified flow rate. If using a pump running in "Set Speed" mode, then the operating point for the pump that defines the pump head added and the associated flow rate, will be...
Using the energy equation of Q = ṁ x Cp x ΔT we can calculate the cooling capacity. Q = (999.78kg/m3 x 0.0995m3/s) x 4.19kJ/kg/K x ((12*c+273.15K) – (6*c+273.15K)) We add 273.15K to the celcius to convert it to units of Kelvin. The Specific heat capacity (Cp) ...