Abu Dhabi Public Realm Design Manual
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An Engineers Guide to Shaft Alignment, Vibration Analysis, Dynamic Balancing & Wear Debris Analysis
Introduction
The purpose of producing this handbook is to provide basic information and guidelines for the implementation of good shaft alignment, vibration analysis and dynamic balancing practice for standard rotating machines systems.
Laser alignment, dynamic balancing and condition monitoring are essential components of a viable maintenance strategy for rotating machines. In isolation each strategy helps to reduce unexpected machine failure but taken together they form the hub of a proactive maintenance strategy that will not only identify incipient problems but will extend machine operating life considerably.
In each section of this handbook we have used one or two examples of the available methods for measuring the required parameters. We do not suggest that the methods illustrated are the only ones available. For anyone wishing to pursue further the subjects covered here a bibliography of some of the available literature is to be found at the end of this handbook.
An Engineers Guide to Shaft Alignment, Vibration Analysis, Dynamic Balancing & Wear Debris Analysis
Introduction
The purpose of producing this handbook is to provide basic information and guidelines for the implementation of good shaft alignment, vibration analysis and dynamic balancing practice for standard rotating machines systems.
Laser alignment, dynamic balancing and condition monitoring are essential components of a viable maintenance strategy for rotating machines. In isolation each strategy helps to reduce unexpected machine failure but taken together they form the hub of a proactive maintenance strategy that will not only identify incipient problems but will extend machine operating life considerably.
In each section of this handbook we have used one or two examples of the available methods for measuring the required parameters. We do not suggest that the methods illustrated are the only ones available. For anyone wishing to pursue further the subjects covered here a bibliography of some of the available literature is to be found at the end of this handbook.
Design And Analysis of Pressure Disc Type Filter
Abstract:
Presently used Filters for Beverages making industries are very bulky in shape and gives low outlet discharge. Hence they are less efficient .Therefore there is a need to design compact, automated unit that produces completely clear liquor and which have large outlet discharge. This concept highlights the design of new filter which fulfill the requirements of beverages making industries for filtration. For making filtration more feasible, unit is to be design in which multiple disc comprising of blades is to be mounted on a shaft for filtration. Multiple discs will get patterned throughout the shaft and number of disc decides the capacity of filter. The special arrangement of Two cake discharge blades (scrapper remover) suspended from a frame mounted on the tank and serve to deflect and guide the cake to the discharge tube. On large diameter filters, the blades are of the swing type that float to maintain the cake to disc clearance and so allow for the wobble of the turning discs.
Design And Analysis of Pressure Disc Type Filter
Abstract:
Presently used Filters for Beverages making industries are very bulky in shape and gives low outlet discharge. Hence they are less efficient .Therefore there is a need to design compact, automated unit that produces completely clear liquor and which have large outlet discharge. This concept highlights the design of new filter which fulfill the requirements of beverages making industries for filtration. For making filtration more feasible, unit is to be design in which multiple disc comprising of blades is to be mounted on a shaft for filtration. Multiple discs will get patterned throughout the shaft and number of disc decides the capacity of filter. The special arrangement of Two cake discharge blades (scrapper remover) suspended from a frame mounted on the tank and serve to deflect and guide the cake to the discharge tube. On large diameter filters, the blades are of the swing type that float to maintain the cake to disc clearance and so allow for the wobble of the turning discs.
Design Characteristics For Evaporation Ponds In Wyoming
ABSTRACT:
Information for the design of evaporation ponds in Wyoming has been developed. The suitability of various models for estimating evaporation and its variability was investigated while the spatial and temporal variabilities of net evaporation at seven locations were described. A routing procedure was developed to analyze the effects of uncertainty in net evaporation estimates on the probability of pond failure. Comparison of equations which estimate evaporation using climatological data showed that the equations vary greatly in their ability to define the variability of evaporation. The Kohler-Nordenson-Fox equation provided monthly and annual evaporation estimates having statistics resembling those of
measured pan data closer than any of seven other equations tested. The equation requires temperature, radiation, wind, and humidity data as inputs. The Kohler-Nordenson-Fox equation using climatic data extrapolated from nearby stations provided better definition of the variability of evaporation than did equations requiring only on-site temperature data. However, results indicate that extreme care must be taken in selecting the stations from which data will be extrapolated. Monthly and annual means, standard deviations, and highest and lowest evaporation and net evaporation values have been calculated for seven Wyoming stations. The year-to-year and spatial variation of evaporation and/or net evaporation in Wyoming was shown to be great enough to cause serious problems in defining rates for evaporation pond designs. Several factors were shown to exist which might produce uncertainties in any estimate of evaporation. The routing procedure was applied to analyze the effects of these uncertainties and variations. Results indicate that the liquid depth of an evaporation pond depends greatly on evaporation rates and maintenance of minimum liquid depths without pond overflow is very difficult.
Design Characteristics For Evaporation Ponds In Wyoming
ABSTRACT:
Information for the design of evaporation ponds in Wyoming has been developed. The suitability of various models for estimating evaporation and its variability was investigated while the spatial and temporal variabilities of net evaporation at seven locations were described. A routing procedure was developed to analyze the effects of uncertainty in net evaporation estimates on the probability of pond failure. Comparison of equations which estimate evaporation using climatological data showed that the equations vary greatly in their ability to define the variability of evaporation. The Kohler-Nordenson-Fox equation provided monthly and annual evaporation estimates having statistics resembling those of
measured pan data closer than any of seven other equations tested. The equation requires temperature, radiation, wind, and humidity data as inputs. The Kohler-Nordenson-Fox equation using climatic data extrapolated from nearby stations provided better definition of the variability of evaporation than did equations requiring only on-site temperature data. However, results indicate that extreme care must be taken in selecting the stations from which data will be extrapolated. Monthly and annual means, standard deviations, and highest and lowest evaporation and net evaporation values have been calculated for seven Wyoming stations. The year-to-year and spatial variation of evaporation and/or net evaporation in Wyoming was shown to be great enough to cause serious problems in defining rates for evaporation pond designs. Several factors were shown to exist which might produce uncertainties in any estimate of evaporation. The routing procedure was applied to analyze the effects of these uncertainties and variations. Results indicate that the liquid depth of an evaporation pond depends greatly on evaporation rates and maintenance of minimum liquid depths without pond overflow is very difficult.
CoolToolsTM Chilled Water Plant Design and Specification Guide
Abstract:
The CoolToolsTM Chilled Water Plant Design and Specification Guide is targeted to a technical design audience. It includes design issues such as selection of coils, application of different piping distribution systems, design and applications of controls, mitigation of low delta-t syndrome, and a myriad of other performance critical issues. It also includes a section on Performance Specifications, which is targeted to equipment specifiers, including engineers and facility purchasing agents. It details methods to request and analyze the performance data of submitted equipment. Topics include zero tolerance performance specifications, applications of witness tests, and performance tables for bid alternates.
CoolToolsTM Chilled Water Plant Design and Specification Guide
Abstract:
The CoolToolsTM Chilled Water Plant Design and Specification Guide is targeted to a technical design audience. It includes design issues such as selection of coils, application of different piping distribution systems, design and applications of controls, mitigation of low delta-t syndrome, and a myriad of other performance critical issues. It also includes a section on Performance Specifications, which is targeted to equipment specifiers, including engineers and facility purchasing agents. It details methods to request and analyze the performance data of submitted equipment. Topics include zero tolerance performance specifications, applications of witness tests, and performance tables for bid alternates.
Design of Sanitary Sewers
Introduction:
Sewer systems are essential for the public health and welfare in all areas of concentrated population and development. Every community produces water‐borne wastes of domestic, commercial, and industrial origin. Sewers perform the virtually needed functions of collecting these wastes and conveying them to points of discharge or disposal.
Design of Sanitary Sewers
Introduction:
Sewer systems are essential for the public health and welfare in all areas of concentrated population and development. Every community produces water‐borne wastes of domestic, commercial, and industrial origin. Sewers perform the virtually needed functions of collecting these wastes and conveying them to points of discharge or disposal.
Small Wastewater Treatment Works DPW Design Guidelines
This document’s purpose is to direct the design process for designing the best and most Appropriate wastewater process for effluent which is generated by small scale on site operations, Up to 100 m3/day such as police stations, border posts, DOJ etc. Larger plants are also addressed To some extent. In this manual, the best appropriate process for such small waste water treatment Plants has already been identified as the Rotating Biological Contactors (biodiscs) systems and Biological trickling filters (biofiters) for larger quantities. Consultants designing such plants for The DPW need to take cognizance of all the criteria set out herein and must ensure that apart from That the best available practices as regards such processes are incorporated into the design. The Designers of such plants are however still to consider other alternatives if the circumstances so Dictate.
Small Wastewater Treatment Works DPW Design Guidelines
This document’s purpose is to direct the design process for designing the best and most Appropriate wastewater process for effluent which is generated by small scale on site operations, Up to 100 m3/day such as police stations, border posts, DOJ etc. Larger plants are also addressed To some extent. In this manual, the best appropriate process for such small waste water treatment Plants has already been identified as the Rotating Biological Contactors (biodiscs) systems and Biological trickling filters (biofiters) for larger quantities. Consultants designing such plants for The DPW need to take cognizance of all the criteria set out herein and must ensure that apart from That the best available practices as regards such processes are incorporated into the design. The Designers of such plants are however still to consider other alternatives if the circumstances so Dictate.
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