MECHANICAL SEALS FOR PUMPS S. Raghavachari Consultant Chennai Abstract Mechanical seals are pieces of engineering marvel. Process industries could meet today’s stringent environmental pollution regulations through the effective sealing of even the most difficult fluids. This paper describes different kinds of seals‚ their design‚ properties and functioning. Effect of various factors like seal balance‚ face pressure‚ temperature and lubrication on performance of seal and probable causes
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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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feels. We can sidestep this molecular picture by dealing with objects as a whole‚ and treating the energy transfer as the flow of heat‚ rather than kinetic energy transfer among particles. |Specific Heat for Various Materials | |Material |Specific Heat | | |(J/kg C°) | |Water |4186 | |Aluminum |900 | |Steel
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of the experiment which is the determination of specific heat of metals. The obtained value of experimental specific heat of metal of aluminum and copper are 0.2152 calg-℃ and 0.0958 cal g-℃ ‚ respectively. It is a must to work faster in performing this experiment because working in an air-conditioned room greatly affects the result of the temperature. For the temperature values‚ the final temperature of mixture should not increase more than 1 ℃ compare to its initial temperature of water/calorimeter
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Achievement Standard 91106 (2.9) Log number: 4 Title: The Heat Text type: Film Director: Paul Feig The film ‘The Heat’ is a film about a very formal but cocky FBI agent who is paired with a really aggressive Boston cop to take down a ruthless drug lord. The FBI agent‚ Sarah Ashburn‚ only agreed to take on this case to get a promotion. The Boston cop‚ Mullins‚ was chosen to do this case because she knew the town better than anyone else did. Sarah Ashburn and Mullins did not like each other
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Which heats up faster: sand or water? Hypothesis: Sand heats up faster than water because it has a lower specific heat. Water has a specific heat‚ which requires one calorie of energy to raise the temperature of one gram of water by one degree Celsius. Sand has a lower specific heat. It takes .19 calories per gram to raise the temperature of the sand by 1 degree Celsius. Sand requires fewer calories to raise its temperature one degree Celsius and that’s why it heats up faster than water.
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These experiments were conducted to find the specific heat of a metal as well as the heat of solution of a solid. Both experiments required the use of calorimetry to measure heat flow and temperature change. The specific heat of the metal was found by heating it in boiling water before transferring it to the calorimeter that was partially filled with water. After shaking the calorimeter‚ the temperature change was measured and recorded. This information was used to calculate the specific heat. The
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Heat transfer Heat transfer is the transition of thermal energy from a hotter object to a cooler object ("object" in this sense designating a complex collection of particles which is capable of storing energy in many different ways). When an object or fluid is at a different temperature than its surroundings or another object‚ transfer of thermal energy‚ also known as heat transfer‚ or heat exchange‚ occurs in such a way that the body and the surroundings reach thermal equilibrium‚ this means that
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heat exchanger is a device built for efficient heat transfer from one medium to another. The media may be separated by a solid wall‚ so that they never mix‚ or they may be in direct contact.[1] They are widely used in space heating‚ refrigeration‚ air conditioning‚ power plants‚ chemical plants‚ petrochemical plants‚ petroleum refineries‚ natural gas processing‚ and sewage treatment. One common example of a heat exchanger is the radiator in a car‚ in which the heat source‚ being a hot engine-cooling
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Specific Heat and Conservation of Energy When energy in the form of heat Q is added to a material‚ the temperature of the material rises. Note that temperature‚ in units of degrees Celsius (°C) or Kelvin (K)‚ is a measure of how hot or cold a substance is‚ while heat‚ in units of joules (J) or calories (cal)‚ is a measure of its thermal energy. 1cal = 4.19J. A measure of the efficiency with which a substance can store this heat energy is known as specific heat capacity‚ or simply the specific heat‚ . The
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