Heat pump From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For theoretical background‚ see Heat pump and refrigeration cycle. Outdoor components of a residential air-source heat pump A heat pump is a machine or device that transfers thermal energy from one location‚ called the "source‚" which is at a lower temperature‚ to another location called the "sink" or "heat sink"‚ which is at a higher temperature. Thus‚ heat pumps moves thermal energy opposite to the direction that
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Discretion plays an indispensable role in the criminal justice system (CJS). Discretion is the judgment or decision implemented through values‚ facts‚ and principles. In the CJS‚ it is the authority given to a decision maker to decide between alternatives or no alternatives. Discretion can be used by police in the area of the criminal investigation process. Its role is continuous from sentencing judgments to the point of detaining offenders in prison past their sentencing period. Discretion also
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characteristics of a Centrifugal pump. The Centrifugal pump is largely used in petrochemical industries to move liquids around the plants and refineries. Through common practise of Centrifugal pump operating characteristics is it possible to determine the optimum conditions of particular conditions. The results of typical characteristics are expressed on this work in terms of pump discharge pressure‚ pump efficiency‚ and power demand at various pump speeds of verses pump discharge. The experimental
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Heat Pump ------------------------------------------------- A heat pump can provide an alternative to using your air conditioner. * Heat pumps can supply heat‚ cooling‚ and hot water. * Your climate and site will determine the type of heat pump most appropriate for your home. For climates with moderate heating and cooling needs‚ heat pumps offer an energy-efficient alternative to furnaces and air conditioners. Like your refrigerator‚ heat pumps use electricity to move heat from a
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PDHonline Course M102 (2 PDH) Selecting a Centrifugal Pump to Handle a Viscous Liquid Instructor: Randall W. Whitesides‚ PE 2012 PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax‚ VA 22030-6658 Phone & Fax: 703-988-0088 www.PDHonline.org www.PDHcenter.com An Approved Continuing Education Provider www.PDHcenter.com PDH Course M102 www.PDHonline.org Selecting a Centrifugal Pump to Handle a Viscous Liquid Copyright © 2002-2011 Randall W. Whitesides‚ P.E.
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Submersible Pump Application The system consists of a submersible pump controlled by a Danfoss VLT AQUA Drive and a pressure transmitter. The transmitter gives a 4-20 mA feedback signal to the VLT AQUA Drive‚ which keeps a constant pressure by controlling the speed of the pump. To design a drive for a submersible pump application‚ there are a few important issues to take into consideration. Therefore the drive used must be chosen according to motor current. 1. The motor is a so called “Can motor”
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Centrifugal Pump @ 1750 RPM · Figure 1 Head Pressure versus Flowrate · Figure 2 Ideal Power versus Head Pressure (H) · Sample Calculations · Raw Data Discussion of Experiment A centrifugal pump contains an impeller or set of vanes encased in housing. Energy is added to the fluid in the form of velocity and pressure as a result of the impeller turning. An engineer must determine the range of flow rates required when using a centrifugal pump. The centrifugal
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Pumps Selection‚ Operation & Maintenance Dr. M.F. Khalil Professor Mech. Eng. Dept. Alexandria University Alex.Eng.Society Short Course By MFKhalil 1 Pumps Function Classification Construction‚ Theory ‚ Operation & Applications Alex.Eng.Society Short Course By MFKhalil 2 Pump Pump is a mechanical device which • converts mechanical energy of its driving unit ( electric motor‚ diesel engine‚ steam turbine ‚gas turbine ‚wind turbine.. Etc.) to hydraulic energy .This hydraulic energy
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machinery problem. We intend to do a project on “Vibration analysis of centrifugal pump at BPCL Kochi Refinery”. The vibration analysis we have done is a part of predictive maintenance on rotary equipments. This technique is mainly used for the improved performance of equipments. Using this we can predict the condition of internal parts of the equipment. We are mainly dealing with the vibration analysis of centrifugal pump‚ compressors and motors. It includes typical causes of vibration like misalignment
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consider a multiple pump system to meet the design requirements. Two typical options include parallel and series configurations of pumps. Specific performance criteria must be met when considering these options. Given a piping system which has a known design flow rate and head requirements‚ Qdes‚ hdes‚ the following pump selection criteria apply. Pumps in Parallel: Assuming that the pumps are identical‚ each pump must provide the following: Q(pump) = 0.5 Qdes h(pump) = hdes Pumps in Series: Assuming
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