Lift evacuation system during power failures
ABSTRACT
In this model we have proposed few modification in the existing lift to adapt to the frequent power failures. Whenever there is power failure, the lift would halt suddenly in its instantaneous position, be it any particular flour or in between two floors.
The proposed system works as follows:
It consists of a hydraulic system which will bring down the lift to the immediate lower floor in case it is struck in between two floors and open the door for the passengers.
The main advantage of this system will be observed in taller buildings where lift man would take a long time to reach the higher floors and cause inconvenience to the commuters.
Monday, November 23, 2009
Pressure drop: A basis for Heat Exchanger design
Pressure drop: A basis for Heat Exchanger design
Abstract
The conventional method of heat exchanger design i.e number of transfer units (NTU) & logarithmic mean temperature (LMTD) are monotonous as they involve many trials to achieve enviable pressure constraints. This can be substituted by making use of allowable pressure drop as design objective. In this project we are presenting the design of plate heat exchangers (PHE) with and without pressure drop delineations. The PHE consists of a pack of gasketted corrugated metal plates, pressed together in a frame. The design is based on a model, which represents the relationship between heat transfer, pressure drop and effective heat transfer area. A computer algorithm has been developed for thermal design of a PHE. The first step of design based on fixed allowable pressure drop. In optimal design without pressure drop delineation the values of Reynolds number & corresponding value of fluid velocities are determined. Thus it is evident that the method involving pressure drop should be practiced to save time.
Abstract
The conventional method of heat exchanger design i.e number of transfer units (NTU) & logarithmic mean temperature (LMTD) are monotonous as they involve many trials to achieve enviable pressure constraints. This can be substituted by making use of allowable pressure drop as design objective. In this project we are presenting the design of plate heat exchangers (PHE) with and without pressure drop delineations. The PHE consists of a pack of gasketted corrugated metal plates, pressed together in a frame. The design is based on a model, which represents the relationship between heat transfer, pressure drop and effective heat transfer area. A computer algorithm has been developed for thermal design of a PHE. The first step of design based on fixed allowable pressure drop. In optimal design without pressure drop delineation the values of Reynolds number & corresponding value of fluid velocities are determined. Thus it is evident that the method involving pressure drop should be practiced to save time.
Interactive Voice Response System
Interactive Voice Response System
ABSTRACT
IVR system involves a combination of voice technologies, but are distinguished by the use of the telephone as the information transfer mechanism with no visual displays of information to the user. Our purpose of designing IVR system is to help examination department.
The Interactive Voice Response (IVR) System provides new levels of convenience for examination department to control and monitor their environment through their telephone hand set. The system provides a friendly series of voice messages to guide users through telephone. The only information needed to enter is examination number. When a service is selected, the exam number will be checked out from the database and appropriate result is send in terms of voice. Telephone monitoring and control uses a PC and Voice Processing Board from Dialogic Corporation that supports telephone lines, each with the capacity for dial in and dial out functionality.
ABSTRACT
IVR system involves a combination of voice technologies, but are distinguished by the use of the telephone as the information transfer mechanism with no visual displays of information to the user. Our purpose of designing IVR system is to help examination department.
The Interactive Voice Response (IVR) System provides new levels of convenience for examination department to control and monitor their environment through their telephone hand set. The system provides a friendly series of voice messages to guide users through telephone. The only information needed to enter is examination number. When a service is selected, the exam number will be checked out from the database and appropriate result is send in terms of voice. Telephone monitoring and control uses a PC and Voice Processing Board from Dialogic Corporation that supports telephone lines, each with the capacity for dial in and dial out functionality.
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