The State of Ohio elevator codes leaves the solution of pumped hydraulic oil and water to the design engineer. Our updated R. L. Deppmann plumbing …
Hydraulic Elevator Sump Pumps in Michigan –Meeting the Code
The State of Michigan is very specific in codes regarding sump pumps located in hydraulic elevators. Our latest and updated R. L. Deppmann Plumbing website …
Sump & Sewage Pump Design Calculations: Pump Head for Building Services
Today we want to help you in determining the pump head for sump and sewage applications. Simple or not, it is good to review the …
Sump and Sewage Pump Design Calculations – Old Pipe or New Pipe in Head Calculations
Today, the R. L. Deppmann Company Monday Morning Minutes starts a series of articles on sump and sewage system sizing tips. The pump head calculations …
Variable Speed Pump Control – More Detailed Curve and Area Control
Curve control, Area control, Sensorless control, Remote DP sensor control. Local sensor control: the shopping cart of speed pump controls can get overwhelming. We just …
HVAC Hydronic System: Parallel Pumping Specifications
OK. I get it! Parallel pumping is a design technique I should review on most of my projects where first cost and energy cost are …
HVAC Hydronic System: Parallel Pumps and Cost
Reduced cost is often viewed as the reason parallel pumping exists as a design option for engineers. In today’s hydronic heating and cooling systems, we …
Hydronic Pump Energy: Motor & VFD Efficiency – How Low Can You Go?
I’m in the middle of the series of blogs on parallel pumping. We can’t ignore the efficiency of variable frequency drives and motors when looking …
HVAC Hydronic System: Parallel Pumps and Standby Capacity
Giving up the 100% standby pump is often the major concern when using parallel pumping strategies for hydronic heating and cooling systems. This strategy …
HVAC Hydronic System: Controlling Parallel Variable Speed Pumps
The historical view of parallel pumping was to make sure all the staging points landed on the single constant speed pump curve. This avoided …