1 Introduction
A pump is a device which is used to move the fluids, for example, the gases, the liquids and slurries. The pump transfer the volume through physical or mechanical action. The pumps are widely applied in the mechanical industry , pharmacy and domestic field. Positive displacement and centrifugal compose the two main types of pumps.
The peristaltic pump is a kind of positive displacement pump which force the fluid by controlling the fixed the fixed quantity and forcing the volume of the captured volume into the drain. When the suction side cavity expands, the fluid flows into the pump. When the cavity collapses, the fluid flow out of the outlet. The flexible tube is the only pumping element of the peristaltic pump. Due to the only
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The peristaltic pumps are widely used in chemical , dispensing, cosmetic, food processing and water treatment field.
In 1932 DeBakey invented the roller pump for the heart and lungs machine. The device is rhythmically powered by a flexible tube which is an important part of the lung-heart machine applied in the heart surgery. It has the ability to replicate the rhythm of human’s heart. As a result , it is named peristaltic pump.[1]
A composite hose with flanges on both ends compose the basic structure of the peristatic pump. And the discharge lines of the system and the suction are connected by the flanges. The shell contains a rotor mounted on the shaft which support its own bearing. In the casing , there are two or more pressing ‘shoes’ are fixed. The principle of the peristaltic pump is simple. As showed in the figure1. Between the rotor and the tube-bed, the tubing is relatively fixed. There are three position A,B and C which are all squeezed. The rollers-pressing shoes on the rotating rotor go through the pipe. Then the tubing is pressed continuously by the rollers just like the fingers. And the liquid in the tubing is pushed along the revolving rotor. After that the tube in the back of the roller restore the original shape as well as create a vacuum which extract the liquid behind it. Between
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Compared to the linear peristaltic pump and rotary peristaltic pump, the 360 degree peristaltic pump runs more slowly at the same performance. As a result, the hoses will have longer lifetime which is economic. Furthermore, the 360 degree peristaltic pump produces less friction due to the unique structure, and therefore less thermal. Especially, the 360 degree peristaltic pump has only a single compression per rotation while the ordinary pumps with numerous shoes or rollers have at least two or more compression per revolution. This means that the design of the 360 degree pump will prolong the lifetime of the tube. At the same size, this design will generate more flow volume (55%) at the same
The Iron lung was one of the first medical advances made in the field of biomedical engineering (“Iron” par. 7). Philip Drinker, a professor at Harvard University, was the first person to invent an artificial respirator: the iron lung (Pendergast 119). Drinker was an American born who majored in chemical engineering (Schlager par. 2). He invented the iron lung in the year 1928 (Baughman 343). With the development of the iron lung, Philip Drinker established a way to save a patient’s life (Pendergast 119). He developed a machine that could work on anybody, no matter their body type (“Iron” par. 4). The iron lung, sometimes known as the Drinker tank, was invented to be used as an artificial respirator. This invention, however, was a means to keep patients with Poliomyelitis breathing, but it could not be used as a cure (“Poliomyelitis par. 7).
Considering the fact that Marc has both been sweating and drinking minimal amounts of water, Marc is now dehydrated. This means he has less than the required amount of water for his body to complete the processes necessary to maintain its health. As stated in the question, the process of sweating causes the loss of more water than solutes. This means that as the level of water decreases, the level of solute concentration will increase, creating a change in the water to solute ratio.
With this improvement, Dr. Willem J. Kolff, the head of the artificial developmental program at the University of Utah, and Dr. William DeVries, the head cardiac surgeon at the University of Utah, decided to take this device further. They wanted to develop a heart based on the heart tested in farm animals, to place into a human. This was done with the help of Dr. Robert Jarvik who developed the Jarvik-7. This device was made of plastic and aluminum. With all that they had accomplished, the staff at the University of Utah’s artificial development program still had to wait 2 years before they found the right candidate for the project.
Use it as a regular pump or sump pump. It is capable of lifting 1200 to 1800 gallons every hour continuously. Simple connectivity, suitability to many applications, and zero operational criticalities of the 91250 makes it a perfect choice. In fact, its highest portability makes it suitable for carrying it anywhere you go. CSA certification, UL/CUL listing, and suitability to standard GFCI-protected outlet makes it compatible to building codes. Superior Pump has offered a completely reliable pumping solution at an economical price band making it an irresistible
The purpose of this experiment is to investigate the effect of changing the concentration of sodium chloride solution on the rate of osmosis in tubes of potatoes. This was maintained using equal measurements of the potato tubes and applying them into the different concentrations of sodium chloride, 0%, 2%, 5%, 10%, 20% and 26%, in beakers then measuring the change in mass of the potato tubes afterwards. The time taken for all potato tubes to be placed in solution was 15 minutes. Can the concentration gradient of the sodium chloride solution influence on the rate of osmotic diffusion undergone by the potato tubes?
Tampa Bay Water is a seawater desalination plant located in Tampa, Florida. Their method of desalination of ocean water or brackish groundwater is another method to obtaining water from fresh surfaces or groundwater sources. This could be used to replace the need for a water supply dam. There are several different technologies that exist to remove salt and other impurities from ocean water. The two most commonly used methods are thermal distillation and desalination. Thermal distillation copies the natural water cycle by using heat to create a vapor that is converted into freshwater. Desalination is a process that removes some amount of salt and other minerals from saline water. The traditional process used is vacuum distillation, which boils water at less than atmospheric pressure making the water sit at a much lower temperature than normal. This is due to the fact that the boiling of liquid occurs when the vapor pressure equals the outside pressure and vapor pressure increases with temperature. Due to the reduced temperature, low-temperature "waste" heat from electrical power generation or industrial processes can be used. The processes use membranes to desalinate, by applying standard reverse osmosis technology. These membrane processes use semi-permeable membranes and pressure to separate salts from water.
Pressure relief valves are relatively simple pieces of equipment. The operation of these devices involves a spring-loaded disk resting on a seat. When the pressure is low the force on the disk is less than the spring force on the disk and the valve remains closed. The pressure force increases causing a drop in the force that seals the disk on the seat. Once the valve is raised a larger disk area is available for the fluid to flow through providing a lifting force which is directly correlated.
A process flow diagram of the pump system is shown in Figure 1. The main components of the system are a centrifugal pump with a 4½-inch impeller, a 2-horsepower motor, a piping system with an effective length of about 285 feet, a rotameter for low liquid flow rates (0-2 gpm), a magnetic flow meter for high liquid flow rates (0-90 gpm), and a tank.
Mechanical based heat pumps systems all have some common components: a compresser, a condenser, and an evaporator. The whole system is made of pipes that circulate a fluid that allows the transfer of heat. The evaporator is what transfer heat from the air in the room to the fluid inside of the system of pipes. The condenser is what takes the heat from the fluid and transfers it to the air outside.
Opercular pumping is a mechanism utilized by certain fish for gas exchange. An opercular pump is used to pump water through the gills in an almost continuous unidirectional flow (SHSU). A dual pump is used in tandem in order to drive the unidirectional flow, both a buccal cavity and opercular cavity work simultaneously. The oral valve along the buccal cavity opens, allowing an influx of water. This influx of water causes an expansion of the opercular cavity, dropping the pressure (Hall). Water then enters into the opercular cavity and flows out due to opercular cavity compression. This compression pumps water out which leaves fresh air in the buccal cavity to be brought to the lungs for respiration. Lungfish utilize a different method of
The fantastic thing is a bike pump is a handy device you can use to pump up more than just a flat tire. You can even use it to inflate from a soccer ball to basketball. The handy tool is a necessity to carry around with you anywhere.
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In the reservoir to stored in the form of the potential energy, and then release the water at low tide, the use of high and low tide level gap between the rotating t...
Although, hydraulics are known to be used as far back as the Hellenistic age, the Proper named father of hydraulics is William George Armstrong. Hydraulics systems work in a very simple and easy to understand way. Force that is applied at one point is transmitted to another point using an incompressible fluid. When Force acts on a small area it can create a much larger force by acting on a larger area by virtue of hydrostatic pressure, Allowing large amounts of energy to be carried by a small flow of highly pressurized fluid. The benefit of a hydraulic system is that force multiplication/division can easily be added to the system.Often times a hydraulic system uses some type of oil although other fluids can be used.
Water and well pumps are utilized to draw water from a profundity where the water table is a few feet underneath the range of provision. Regularly utilized for water conveyance. Hand pumps are physically worked pumps; they utilize human force and mechanical playing point to move liquids or air starting with one spot then onto the next. They are broadly utilized as a part of each nation on the planet for a mixture of mechanical, marine, watering system and recreation exercises. There are numerous distinctive sorts of hand pump accessible, fundamentally working on a cylinder, stomach or turning vane guideline with a check valve on the section and passageway ports to the chamber working in restricting bearings. Most hand pumps have plungers or responding cylinders, and are sure relocation.