PDF-Energy Innovators Initiative Technical Fact Sheet Use of Variable Frequency Drives for

Initially utility companies introduced incentives to make it practical to switch from fixed speed and flowthrottling controls to variable frequency drives VFDs Figure 1 Since then more building designs have been specifying VFDs and many building HVA. Introduction. Fans . and blowers provide air for ventilation and industrial process requirements. Fans generate. a pressure to move air (or gases) against a resistance caused by ducts, dampers, or other components. Beatlemania. & Pathology. Fan. Two origins. Latin . fanaticus. (enters English 1550), . fanum. Fancy=fans of specific hobbies or sports, especially boxing (l.18. th. e. 19. th. centuries). Shortened to fan. Pumping System Fundamentals. V = volume flow rate. . D. P. total. . = pressure gain to overcome inlet/outlet affects and friction . D. P. static. (pressure difference between inlet and outlet). D. Types of PROFLO Pumps. Utility. Sump. Effluent. Sewage. Battery . Backup Pumps. Lincoln Stocking Cross. LP#. Model. Description. LP#. Model. Description. 236005. PF91025. 1/5HP THERMOPLAS SUB UTIL PUMP. Basics. vac·u·um. noun . 1. a space entirely devoid of matter. . 2. an enclosed space from . which.  matter, especially air, has been partially removed so that the matter or gas remaining in the space exerts less pressure than the atmosphere ( opposed to . ST. TIME. IN A GOVERNMENT HOSPITAL . “ JJ HOSPITAL, MUMBAI ” . Dr . . Hemant. Gupta . [Associate . Prof. & Unit Head, Dept of Medicine, . J.J.Hospital. , . Mumbai] . Dr . . Ayaz. Ahmed [lecturer]. What is a Pump?. Pump Types. Displacement Pump. Axial-Flow Pump. Centrifugal Pump. Ejectors. Submersible Pumps. Disclaimer. The topic of PUMPS is substantial enough so as to warrant its own course. In this course, we will only have time to ‘scratch the surface’ of pumps.. Or the Great Delta PT . vs. Delta PV Debate. VFD and ECM Controls. Pump performance curve. system . curve. intersecting point = new operation point. new system . curve. System Friction Loss (Head). 1/9/17. Pressure. 1 atmosphere ~ 1 bar ~ 760 mm Hg ~ 760 . torr. ~ 100,000 Pa. Ion gauges read in . mbar, . i.e. 1x10. -10. mbar = 1x10. -13. atm.. Sometimes ion gauges read in . torr. but ours are set to . Gear Pumps. Screw Pump. Lobe Pump. Vane Pump. Radial Piston Pump. PDRP. Rotary Pumps. Positive Displacement Rotary Pumps. A positive displacement pump in which rotary motion carries the liquid from the pumps inlet to its outlet.. Call Doctor Fix-It today for the repairs, maintenance, or installation of an HVAC system in your Littleton home! Affordable services with no hidden fees! Cal Poly State University, San Luis Obispo. Presented to the UC/CSU/CCC Sustainability Conference. June 22, 2009. Presented by. Dennis K. Elliot, PE, CEM. Sustainability Manager. HVAC Retrofits. HVAC Retrofits. DISCLAIMER Portions of this document may be inegibie in dectronic image products, Images are pmiuced fiwn the best available original document. and Global Warming Impacts Emerging Technologies: Ridge Reciprocating Pump. 1- Piston Pump. Reciprocating Pump. Piston Pump. 1- Single acting pump. Double Acting Piston Pump. Reciprocating Pump Pulsation. Plunger Pump. Diaphragm Pump. Slippage. . is leakage .