E. Reinhart Royce J. Rhoads* Kenneth L. Saucier Paul R. Stodola William X. Sypher* Robert E. Tobin* Kevin Wolf *Member of subcommittee that prepared this report. †Chairman of subcommittee that prepared this report. This report describes pumps for transporting and placing concrete. Rigid and flexible pipelines are discussed and couplings and other accessories described. Recommendations for proportioning pumpable concrete suggest optimum gradation of aggregates; outline water‚ cement‚ and
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CENTRIFUGAL PUMPS Introduction A centrifugal pump is a rotodynamic pump that uses a rotating impeller to create flow by the addition of energy to a fluid. Centrifugal pumps are commonly used to move liquids through piping. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller‚ flowing radially outward into a diffuser or volute chamber (casing)‚ from where it exits into the downstream piping. Centrifugal pumps are used for
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characteristics of the pump‚ comparing the performance characteristics for three different Reynolds numbers and explaining the effects observed and to also make predictions about the performance for a pump with an impeller diameter of 228mm using the data obtained in the experiments. This experiment was conducted under room temperature. The motor was first adjusted to 3000 rpm and the input valve which was used to control the input pressure was adjusted in 0.1bar steps. Pump Inlet and delivery static
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practices. This research paper will review a growing problem in today’s healthcare field that needs to be addressed: Diabetic foot ulcers. To ensure quality patient care‚ current evidence based research has to be an important part of this process. With every new research proposal‚ a solid foundation has to be the basis for that specific research. This paper will discuss why diabetic foot ulcers are a growing problem in healthcare‚ methods used to improve outcomes (negative pressure wound therapy versus
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No. 1: Heat Pump Experiment 1. Objective The objective of the experiment is to measure the Coefficient of Performance (COP) of a Heat Pump. 2. The experimental setup The equipment provided is a heat pump with pressure and temperature sensors placed at various locations. 3. Procedure Study the diagram and equipment provided and identify the various components of the Heat Pump – that is‚ the compressor (1-2)‚ the condenser (2-3)‚ the expansion valve (3-4) and the evaporator (4-1)
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diabetes type I. This is known as insulin-dependent diabetes mellitus (IDDM). This type of diabetes includes people who are dependant on injections of insulin on a daily basis in order to satisfy the bodies insulin needs‚ they cannot survive without these injections. OVERVIEW OF DIABETES TYPE I What is diabetes type I? In order to understand the disease we firstly need to know about insulin. Insulin is a hormone. The role of insulin is to convert the food we eat into
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Insulin plays a critical role in integration and regulation of carbohydrates and lipid metabolism. Insulin and regulation of carbohydrate metabolism Insulin is a peptide hormone which is secreted by the pancreatic beta-cell that present in the islet of Langerhans. It is a protein that function to regulate the metabolism of carbohydrates‚ fats and protein and also utilize of energy from the ingested nutrients especially glucose. Foods that consist of carbohydrates are converted into glucose during
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AUTOMATIC WATER PUMP CONTROLLER The automatic water pump controller is used to control the water pump motor. The motor gets automatically switched on when water in the overhead tank (OHT) falls below the lower limit. Similarly‚ it gets switched off when the tank is filled up. Built around only one NAND gate IC (CD4011)‚ the circuit is simple‚ compact and economical. It works off a 12V DC power supply and consumes very little power. The circuit can be divided into two parts: controller circuit and
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Electrical Submersible Pump Analysis and Design May 30‚ 2001 Electrical Submersible Pump Analysis and Design Case Services‚ Inc. Abstract Case Services’ software provides production optimization for a variety of different methods of artificial lift. This paper discusses the dominant factors in electrical centrifugal submersible pump design and monitoring. Emphasis is placed on three areas: • • • Well inflow performance behavior. Fluid Pressure-Volume-Temperature and phase behavior. Pump equipment performance
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Mabuhay Pumps Company CASE ANALYSIS Introduction Mabuhay Pumps Company has manufactured high quality residential pumps for over 20 years. The firm has always been profitable and relied on home grown talents who have worked with MPC since 15 years ago. The BOD is composed mainly of closed relatives of the founders who have either passed away with a couple of outsiders. Point of View Knowing that MPC is popularly known for their home grown talents‚ quality products‚ and trusted specialization in
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