Heat resistance of endospores of Bacillus pumilus Abstract Spore suspension of Bacillus pumilus was inoculated into universal bottles containing sterile distilled water in water baths at temperatures of 85°C‚ 90°C and 95°C. At specific time intervals‚ a sample was removed and spread on nutrient agar plates. The number of colonies formed was used to determine the D-value and z-value. The D-value for 85°C is 64.1 minutes‚ 25.7 minutes for 90°C and 8.2 minutes for 95°C while the z-value is 11
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FEASIBILITY OF PRUSSIAN BLUE POWDER (TINA) AS PIGMENT FOR WHITEBOARD INK An Investigatory Project Presented to the Science Department Paliparan II National High School – Congressional Annex Brgy. Paliparan II‚ Dasmarinas City‚ Cavite By: Hidalgo‚ Briggs Lansang‚ Marinella Ranoco‚ Jessa Lonosa‚ Jamaicah Lumapas‚ Christopher Lawrence March 2014 Acknowledgement Abstract TABLE OF CONTENTS LIST OF APPENDICES Appendix 1. Sample Research Instrument Appendix
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Allusion: Henry didn’t mind sitting in the back of the bus. But for some reason Sheldon seemed to resent it. Grousing once in a while about how this was the Northwest and not the Deep South and the bus driver had had no business jerking his thumb toward the back of the bus when he and Henry boarded. Page 214 |Explanation: Henry and Sheldon are heading out to meet Keiko at the new camp and are told to go to the back of the bus by the bus driver. Though Henry is fine with this Sheldon complains
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Heat exchanger An interchangeable plate heat exchanger Tubular heat exchanger. A heat exchanger is a piece of equipment 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. The classic example
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Cross Flow Heat Exchanger Experiment By Andres Rodriguez Abstract The design project of the group was to create an experiment for Thermo/Fluids Laboratory. The experiment will help aide the students in relating pressure drop and heat transfer in a cross flow heat exchanger. The experiment consists of three cross flow heat exchangers (bare inline‚ bare staggered‚ and finned staggered) that will cool hot water with current fan in the Laboratory. Optimal flow rates‚ pressure and temperature
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Experiment 8 - Free & Forced Convection Convection Heat Transfer.doc EXPERIMENT ON FREE AND FORCED CONVECTION HEAT TRANSFER 8.1 OBJECTIVES To study experimental data for heat transfer in order to evaluate the overall heat transfer coefficients and heat balances for the following cases of heat transfer in a .shell and tube heat exchanger. (a) Natural convection and (b) Forced convection. 8.2 THEORY A basic diagram of a shell and tube heat exchanger is shown in Figure 8.1. Here steam at a temperature
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Heat Transfer Lab report Free & Forced Convection Heat Transfer Mahmood Mohsin AL-Khusaibi 85135 Amur Sultan Al-Habsi 86260 Rashid Nasser Al Shabibi 85362 Aim: The objective of this experiment to investigate the use of extended surface to improve heat transfer through surfaces. In addition‚ another target is to demonstrate the effect of the fluid speed on the heat transfer by convection. Introduction: Heat transfer by convection is one of three heat transfer
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geothermal heat pump The Direct exchange geothermal heat pump is the oldest type of geothermal heat pump technology. It is also the simplest and easiest to understand. The ground-coupling is achieved through a single loop circulating refrigerant in direct thermal contact with the ground (as opposed to a combination of a refrigerant loop and a water loop). The refrigerant leaves the heat pump appliance cabinet‚ circulates through a loop of copper tube buried underground‚ and exchanges heat with the
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Aim To investigate the effect of molar mass on the molar heat of combustion of adjacent members of a homologous alcohol series. Introduction Chemists refer to the energy stored in a substance as the heat content or enthalpy of the substance. The heat of reaction is determined by the difference in the enthalpy between the reactants and products. The molar heat of combustion of a substance is the quantity of heat liberated when one mole of that substance is burnt completely in air. In the case
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Heat of Combustion of Magnesium Background: The students were given full instructions on how to experimentally determine the enthalpy of reaction (ΔHrxn) for the combustion of magnesium ribbon‚ using Hess’s Law. Data Collection: | |Reaction 1 |Reaction 2 | | |(MgO) |(Mg)
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