Heating system operation

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  • UNIFIED FACILITIES CRITERIA (UFC) HEATING SYSTEMS OPERATION AND MAINTENANCE Any copyrighted material included in this UFC is identified at its point of use. Use of the copyrighted material apart from this UFC must have the permission of the copyright holder. U.S. ARMY CORPS OF ENGINEERS NAVAL FACILITIES ENGINEERING COMMAND (Preparing Activity) AIR FORCE CIVIL ENGINEER SUPPORT AGENCY

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  • During the past 20 years, design and operation of the comfort systems for buildings have been transformed because of energy conservation imperatives, the use of computer-based design aids, and major advances in intelligent management systems for buildings. In the 1970s, rules of thumb were widely used by designers. Today, a strong analytical basis for the design synthesis process is standard procedure. This handbook describes the latest methods for design and operation of new and existing buildings.

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  • UFC are living documents and will be periodically reviewed, updated, and made available to usersas part of the Services' responsibility for providing technical criteria for military construction.Headquarters, U.S. Army Corps of Engineers (HQUSACE), Naval Facilities Engineering Command(NAVFAC), and Air Force Civil Engineer Support Agency (AFCESA) are responsible foradministration of the UFC system. Defense agencies should contact the preparing service fordocument interpretation and improvements. Technical content of UFC is the responsibility of thecognizant DoD working group.

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  • Engineering technology or mechanical engineering industry is the application of physical principles to create all kinds of machinery and equipment or other useful objects. Mechanical application of thermodynamic principles, the law of conservation of mass and energy to analyze static and dynamic physical systems, for design work in areas such as automotive, aircraft and the other vehicles, heating systems and cooling, household appliances, machinery and production equipment, weapons ...

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  • BACKGROUND Public agencies, private corporations, nonprofit institutions, and other organizations regularly invest millions of dollars in acquiring buildings and other constructed facilities to support their lines of business. For this investment, the owner receives a complex structure composed of hundreds of separate but interrelated components, including roofs, walls, foundations, electrical, plumbing, heating, air con- ditioning, ventilation, fire, communication, safety, and architectural systems.

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  • The handbook includes information on thermodynamics and the properties of fluids; the three modes of heat transfer - conduction, convection, and radiation; and fluid flow, and the energy relationships in fluid systems. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility fluid systems.

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  • A look on energy, renewable energies, energy storage and synthetic fuels, hybrid architecture, fuel cells, hydrogen as a vector of energy of the future.The Earth resources are quite limited in quantity Many challenges to mankind in 21st century: development, health, water, food, demography, education, energy.In physics, energy (Ancient Greek: ἐνέργεια energeia "activity, operation"[1]) is a quantity that is often understood as the ability a physical system has to produce changes on another physical system.

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  • A study to measure indoor concentrations and emission rates of volatile organic compounds (VOCs), including formaldehyde, was conducted in a new, unoccupied manufactured house installed at the National Institute of Standards and Technology (NIST) campus. The house was instrumented to continuously monitor indoor temperature and relative humidity, heating and air conditioning system operation, and outdoor weather. It also was equipped with an automated tracer gas injection and detection system to estimate air change rates every 2 h.

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  • An electric drive is the electromechanical system that converts electrical energy to mechanical motion. Being a part of automatic equipment, it acts together with the driven object, such as a machine tool, metallurgical, chemical, or flying apparatus, domestic or medical device. Electric drives area includes applications in computers and peripherals, motor starters, transportation (electric and hybrid electric vehicles, subway, etc.

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  • This section describes heating, ventilating, and air conditioning (HVAC) systems and discusses characteristics and components of automatic control systems. Cross-references are made to sections that provide more detailed information. A correctly designed HVAC control system can provide a comfortable environment for occupants, optimize energy cost and consumption, improve employee productivity, facilitate efficient manufacturing, control smoke in the event of a fire, and support the operation of computer and telecommunications equipment....

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  • A wide range of issues related to analysis of gas turbines and their engineering applications are considered in the book. Analytical and experimental methods are employed to identify failures and quantify operating conditions and efficiency of gas turbines. Gas turbine engine defect diagnostic and condition monitoring systems, operating conditions of open gas turbines, reduction of jet mixing noise, recovery of exhaust heat from gas turbines, appropriate materials and coatings, ultra micro gas turbines and applications of gas turbines are discussed.

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  • decreasing their value added. Successful, cost-effective investment into energy efficiency technologies and practices meets the challenge of maintaining the output of a high quality product while reducing production costs. This is especially important, as energy efficient technologies often include “additional” benefits, such as increasing the productivity of the company. Energy use is also a major source of emissions in the refinery industry, making energy efficiency improvement an attractive opportunity to reduce emissions and operating costs.

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  • There are four major categories of catastrophic failure which exists in the boiler itself. 1. Melt down. This is a result of the heating surface metal reaching its melting point. It is a result of the boiler operating on very low water conditions. This by itself will not cause an explosion but will do major damage to the boiler and create a dangerous situation which could lead to an explosion.

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  • The need for operating circuits at increasingly higher speeds has always challenged designers. From radar and television systems in the 1940s to gigahertz microprocessors today, the demand for pushing circuits to higher frequencies has required a solid understanding of their speed limitations. In this chapter, we study the effects that limit the speed of transistors and circuits, identifying topologies that better lend themselves to high-frequency operation.

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  • Contents of "Respironics V200/Esprit ventilator service manual": introduction and intended use; recommended tools and test equipmen; warnings, cautions, and notes; theory of operation; pneumatic system; air system check valve;...

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  • Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the production and usage of heat and mechanical power for the design, production, and operation of machines and tools.[1] It is one of the oldest and broadest engineering disciplines.

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  • To get around this restriction, many diesels incorporate an air pump in the form of an exhaust-driven turbocharger or a mechanical supercharger. Forced induction can double power outputs without violating the smoke limit. And, as far as turbochargers are concerned, the supercharge effect is free. That is, the energy that drives the turbo would otherwise be wasted out the exhaust pipe as heat and exhaust-gas velocity. The absence of an air restriction and an ignition system that operates as a function of engine architecture can wrest control of the engine from the operator.

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  • Compressed air provides power for many manufacturing operations. Energy stored in compressed air is directly convertible to work. Conversion from another form of energy, such as heat, is not involved. Compressed air can be supplied by several different types of compressors (Fig. 61.1). The choice depends on the amount, pressure, and quality of air a plant system requires. The reciprocating compressor is manufactured in a broad range of configurations.

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  • The energy demand for the endothermic gasification reaction is met by the combustion of residual char in the fast bed combustor. The circulating bed materials act as heat carrier between the two fluidized beds and maintain the required temperature in gasifier. Therefore, the hydrodynamics of such a dual fluidized beds system needs to be thoroughly understood for successful design and operation of the system for industrial application.

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  • CHAPTER 57 GAS TURBINES Harold Miller GE Power Systems Schenectady, New York 57.1 INTRODUCTION 57.1.1 Basic Operating Principles 57. 1.2 A Brief History of Gas Turbine Development and Use 57.1.3 Components, Characteristics and Capabilities 57.1.4 Controls and Accessories 57.1.5 Gas Turbine Operation GAS TURBINE PERFORMANCE 57.2.1 Gas Turbine Configurations and Cycle Characteristics 57.2.2 Trends in Gas Turbine Design and Performance 1723 1723 57.3 1727 1728 1737 1740 57.4 1740 1740 1747 APPLICATIONS 1749 57.3.1 Use of Exhaust Heat in Industrial Gas Turbines 1749 57.3.

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