Stormwater & Subsoil Drainage Systems
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Design Guidelines
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Design of Water Hammer Shock Absorber
Abstract:
In the piping system, water hammer or hydraulic shock is a major issue that engineers need to consider. Water hammer is a phenomenon that leads to shock waves in the fluid due to rapid closing and opening of the valve, which can affect pipes, valves and gauges in any water, gas, or oil applications due to the sudden transient event. It is there for every system that has a flow of fluid through pumping such as houses, hospitals, and influences major effectiveness in the power plant. It occurs when there is a pressure difference in the pipeline leading to a loud noise. Specifically, this project is aimed to design a pipeline system and develop solutions to reduce the water hammer using a shock absorber. The main idea of the design project is to design a water hammer system using a shock absorber in order to reduce the shock waves of the pipes.
Design of Water Hammer Shock Absorber
Abstract:
In the piping system, water hammer or hydraulic shock is a major issue that engineers need to consider. Water hammer is a phenomenon that leads to shock waves in the fluid due to rapid closing and opening of the valve, which can affect pipes, valves and gauges in any water, gas, or oil applications due to the sudden transient event. It is there for every system that has a flow of fluid through pumping such as houses, hospitals, and influences major effectiveness in the power plant. It occurs when there is a pressure difference in the pipeline leading to a loud noise. Specifically, this project is aimed to design a pipeline system and develop solutions to reduce the water hammer using a shock absorber. The main idea of the design project is to design a water hammer system using a shock absorber in order to reduce the shock waves of the pipes.
IMS Design Quick Start Guide
The IMSDesign Quick Start Guide contains information about how you can install the Integrated Membrane System Design (IMSDesign) application. Additionally, this guide contains detailed information about setting the options related to different modules of the application.
IMS Design Quick Start Guide
The IMSDesign Quick Start Guide contains information about how you can install the Integrated Membrane System Design (IMSDesign) application. Additionally, this guide contains detailed information about setting the options related to different modules of the application.
Chilled Water Plant Design Guide
Introduction:
Many large buildings, campuses, and other facilities have plants that make chilled water and distribute it to air handling units and other cooling equipment. The design operation and maintenance of these chilled water plants has a very large impact on building energy use and energy operating cost. Not only do chilled water plants use very significant amounts of electricity (as well as gas in some cases), they also significantly contribute to the peak load of buildings. The utility grid in California, and in many other areas of the country, experiences its maximum peak on hot summer days. During this peak event, chilled water plants are often running at maximum capacity. When temperatures are moderate, chilled water plants are shut down or operated in stand-by mode. This variation in the rate of energy use is a major contributor to the peaks and valleys in energy demand, which is one of the problems that must be addressed by utility grid managers. Most buildings and facilities that have chilled water plants have special utility rates where the cost of electricity depends on when it is used and the maximum rate of use. For instance, PG&E has five time charge periods: summer on-peak, summer mid-peak, summer off-peak, winter mid-peak and winter off-peak. The price of electricity is several times higher during the summer on-peak than it is during the off-peak periods. Not only does the cost of electricity vary, but most utility rates also have a monthly demand charge based on the maximum rate of electricity use for the billing period. Since chilled water plants operate more intensely during the summer peak period, efficiency gains and peak reductions can result in very large utility bill savings. In addition to new construction, the chilled water plants of many existing buildings are being replaced or overhauled. Older chilled water plants have equipment that uses ozone-damaging refrigerants. International treaties, in particular the Montreal Protocol, call for ozone damaging chemicals (in particular CFCs) to be phased out of production. As the availability of CFCs is reduced, the price will skyrocket, creating pressure for chilled water plants to be overhauled or replaced.
Chilled Water Plant Design Guide
Introduction:
Many large buildings, campuses, and other facilities have plants that make chilled water and distribute it to air handling units and other cooling equipment. The design operation and maintenance of these chilled water plants has a very large impact on building energy use and energy operating cost. Not only do chilled water plants use very significant amounts of electricity (as well as gas in some cases), they also significantly contribute to the peak load of buildings. The utility grid in California, and in many other areas of the country, experiences its maximum peak on hot summer days. During this peak event, chilled water plants are often running at maximum capacity. When temperatures are moderate, chilled water plants are shut down or operated in stand-by mode. This variation in the rate of energy use is a major contributor to the peaks and valleys in energy demand, which is one of the problems that must be addressed by utility grid managers. Most buildings and facilities that have chilled water plants have special utility rates where the cost of electricity depends on when it is used and the maximum rate of use. For instance, PG&E has five time charge periods: summer on-peak, summer mid-peak, summer off-peak, winter mid-peak and winter off-peak. The price of electricity is several times higher during the summer on-peak than it is during the off-peak periods. Not only does the cost of electricity vary, but most utility rates also have a monthly demand charge based on the maximum rate of electricity use for the billing period. Since chilled water plants operate more intensely during the summer peak period, efficiency gains and peak reductions can result in very large utility bill savings. In addition to new construction, the chilled water plants of many existing buildings are being replaced or overhauled. Older chilled water plants have equipment that uses ozone-damaging refrigerants. International treaties, in particular the Montreal Protocol, call for ozone damaging chemicals (in particular CFCs) to be phased out of production. As the availability of CFCs is reduced, the price will skyrocket, creating pressure for chilled water plants to be overhauled or replaced.
Guidelines for Drinking-Water Quality
The primary purpose of the Guidelines for drinking-water quality is the protection of public health. The Guidelines provide the recommendations of the World Health Organization (WHO) for managing the risk from hazards that may compromise the safety of drinking-water. The recommendations should be
considered in the context of managing the risk from other sources of exposureto these hazards, such as waste, air, food and consumer products.
Guidelines for Drinking-Water Quality
The primary purpose of the Guidelines for drinking-water quality is the protection of public health. The Guidelines provide the recommendations of the World Health Organization (WHO) for managing the risk from hazards that may compromise the safety of drinking-water. The recommendations should be
considered in the context of managing the risk from other sources of exposureto these hazards, such as waste, air, food and consumer products.
Community Public Water Systems Design Criteria
Introduction:
This publication is a revised edition of our Design Criteria for Community Public Water Systems. They have been prepared as a guide to water systems, design engineers, and our own staff. There has been no attempt to address every situation. We also know that there will be occasions when these criteria will not apply. Exceptions will be handled on an individual basis. The Tennessee Safe Drinking Water Act of 1983 requires The Department of Environment & Conservation to: "Exercise general supervision over the construction of public water systems throughout the state. Such general supervision shall include all the features of construction of public water systems which do or may affect the sanitary quality or the quantity of the water supply. No new construction shall be done nor shall any change be made in any public water system until the plans for such new construction or change have been submitted and approved by the department." (Extract of part of Section 68-221-706, Tennessee Code) Where the terms shall and must are used, it is intended to be a mandatory requirement. Other terms such as should, recommend, preferred, and the like, are intended to show desirable equipment, procedures, or methods. We encourage development of new methods and equipment. However, any new developments must be demonstrated to be satisfactory before we can approve their use. Operating data from other installations, or demonstration of the equipment by a manufacturer's representative, or both, may be needed for our review. These criteria are a compilation of information from a number of sources. The principle source, however, is Recommended Standards for Water Works, 1982 Edition. This publication is a report of "The Committee of the Great Lakes Upper Mississippi River Board of State Sanitary Engineers" and is commonly known as Ten-State Standards.
Community Public Water Systems Design Criteria
Introduction:
This publication is a revised edition of our Design Criteria for Community Public Water Systems. They have been prepared as a guide to water systems, design engineers, and our own staff. There has been no attempt to address every situation. We also know that there will be occasions when these criteria will not apply. Exceptions will be handled on an individual basis. The Tennessee Safe Drinking Water Act of 1983 requires The Department of Environment & Conservation to: "Exercise general supervision over the construction of public water systems throughout the state. Such general supervision shall include all the features of construction of public water systems which do or may affect the sanitary quality or the quantity of the water supply. No new construction shall be done nor shall any change be made in any public water system until the plans for such new construction or change have been submitted and approved by the department." (Extract of part of Section 68-221-706, Tennessee Code) Where the terms shall and must are used, it is intended to be a mandatory requirement. Other terms such as should, recommend, preferred, and the like, are intended to show desirable equipment, procedures, or methods. We encourage development of new methods and equipment. However, any new developments must be demonstrated to be satisfactory before we can approve their use. Operating data from other installations, or demonstration of the equipment by a manufacturer's representative, or both, may be needed for our review. These criteria are a compilation of information from a number of sources. The principle source, however, is Recommended Standards for Water Works, 1982 Edition. This publication is a report of "The Committee of the Great Lakes Upper Mississippi River Board of State Sanitary Engineers" and is commonly known as Ten-State Standards.
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.
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