’Arsonval in 1881‚ OTEC have developed for years along with advancements that have made in this technology. The three most common OTEC systems are open cycle‚ closed cycle and hybrid cycle‚ all requiring all requiring a working fluid‚ condenser and evaporator within the system. These three systems all employ the thermodynamics of a working heat exchanger and use the temperature differences naturally occurring in the ocean as the driving force. A. Closed-Cycle D ’Arsonval ’s original
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Essential oils are volatile components associated with the aromas of seeds‚ bark‚ or roots of plants. In this experiment‚ the essential oil eugenol was isolated from ground cloves using steam distillation techniques. Eugenol had a high boiling point‚ but it was isolated at a lower temperature by performing a co-distillation with water‚ a process known as steam distillation. This technique allowed the desired material to be distilled at a lower temperature than 100℃. The point of the steam distillation
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The Split-type air conditioner Some rooms do not have external windows or walls. Difficulties arouse in creating sufficient air flow in the rooms‚ which can lead to discomfort for residents in terms of temperature and humidity. The split-type air conditioner can be used in these situations. Introduction: A split air conditioning simply means that the condensor (or sometimes referred to as the “outdoor unit”) is separated from the “indoor unit”‚ thus the term “split”. The split air conditioning
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and doors. The next step would be to place an auxiliary fan in front of the car facing the condenser. Allow the system to stabilize which will take approximately five to ten minutes. Now begin to place a thermometer in the register closet to the evaporator and check the temperature. When you read the temperature it should be around thirty-five to forty degrees Fahrenheit with an ambient air temperature of eighty degrees Fahrenheit. At this time if you have a set of gauges‚ this would be a good time
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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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CAMIGUIN POLYTECHNIC STATE COLLEGE – Institute of Engineering and Computer Studies ACKNOWLEDGMENT The trainee extends his warm appreciation and gratitude to those who helped in the completion of his training. To the trainee’s parents and relatives for their endless support both moral and financial. To the OJT – in – charge‚ Engr. GIL B. SALAS for his teachings and reminders to be a good and responsible trainee and enrolling the trainee on their OJT. To the engineering instructors‚ for molding
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Republic of the Philippines PHILIPPINE INSTITUTE FOR DEVELOPMENT STUDIES Makati City SUGGESTED FORMAT OF RESEARCH PROPOSAL PART I. Summary of Proposal A. PROJECT TITLE: B. NAME AND ADDRESS OF PROJECT PROPONENT: C. BRIEF DESCRIPTION OF THE PROJECT: (General objectives of the project‚ its significance‚ output expected and major activities envisioned under the project.) D. TOTAL PROJECT COST: E. TIMEFRAME: (Project duration in weeks and approximate starting and completion dates
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Abstract Coffee is the third most popular beverage in the world after tea and water. However‚ the caffeine within coffee prevents some people from enjoying the strength‚ taste‚ and aroma that this beverage has to offer. In the past century‚ a new market for decaffeinated coffee has arisen‚ and the technology to develop this product has evolved. Over time‚ this technology has become more effective in removing a greater percentage of caffeine‚ while preserving more of the coffee’s flavour. Because
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1881‚ OTEC is not a new technology. Since then many advancements have been made in the development of this technology. The three most common OTEC systems are: open-cycle‚ closed-cycle and hybrid cycle‚ all requiring a working fluid‚ condenser and evaporator within the system. These three systems all employ the thermodynamics of a working heat exchanger and use the temperature differences naturally occurring in the ocean as the driving force. Concerns with efficiency losses due to befouling‚ system
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(CH2Cl2) that is also referred to as direct contact. Calcium carbonate (CaCO3) is used to remove the tannins from the coffee. Afterwards an extraction is used to separate the organic layer (bottom) from the aqueous layer (upper). By using a rotary evaporator‚ it evaporates the organic solvent and forms the crude caffeine. Afterwards we used acetone-petroleum ether for recrystallization and the vacuum apparatus for filtration to obtain pure caffeine. At the end the melting point of the pure caffeine
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