Analysis and design of room air distribution systems.: An article from: HVAC & R Research

Analysis and design of room air distribution systems.: An article from: HVAC & R Research Review

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This digital document is an article from HVAC & R Research, published by Thomson Gale on November 1, 2007. The length of the article is 4703 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: This article analyzes room air distribution and describes a design chart that makes it possible to evaluate variables such as air quality, air speed and draft rate (DR), temperature gradient ([PD.sub.grad]), mean radiant temperature, and radiant temperature asymmetry ([PD.sub.rad]) as a function of flow rate and temperature difference in the supply system. Five different air distribution systems are analyzed: mixing ventilation from a wall-mounted diffuser, mixing ventilation from a ceiling-mounted diffuser, mixing ventilation from a ceiling-mounted diffuser with swirling flow, displacement ventilation from a wall-mounted low-velocity diffuser, and a low-impulse system based on a textile terminal in the ceiling. The procedure to some extent can be based on flow elements, but especially full-scale experiments and computational fluid dynamics predictions have been used for the development of the design charts described herein.

Citation Details
Title: Analysis and design of room air distribution systems.
Author: Peter V. Nielsen
Publication:HVAC & R Research (Magazine/Journal)
Date: November 1, 2007
Publisher: Thomson Gale
Volume: 13 Issue: 6 Page: 987(11)

Distributed by Thomson Gale

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Oct 10, 2011 09:46:35

Cool Thermodynamics: Engineering and Physics of Predictive, Diagnostic and Optimization Methods for Cooling Systems

Cool Thermodynamics: Engineering and Physics of Predictive, Diagnostic and Optimization Methods for Cooling Systems Review

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This book is geared toward those interested in the engineering and physics of airconditioning and refrigeration devices (chillers). Analytic thermodynamic models are developed for a wide variety of cooling systems and a broad range of operating conditions. These models are easily implemented in the field or laboratory. Although the authors focus upon mechanical (electrically-driven) chillers - primarily reciprocating and centrifugal machines - there is also substantial material on heat-driven absorption chillers. Heat pumps and heat transformers are also addressed. A few less common chiller types are also treated, such as thermoelectric, thermoacoustic and vortex-tube units. The material is presented in a manner that can appeal to both the engineer and the physicist, and can form a bridge between the two communities in their analysis and presentation of cooling systems. In each chapter, the authors try to capture the basic physics of the problem, and to emerge with quantitatively accurate predictive and diagnostic tools. They aim for simple thermodynamic models where the functional dependences of chiller performance on the major operating variables are transparent. And all the models presented are required to stand the test of comparison against experimental performance data. The reader is shown how chillers can be viewed as input-output devices, viewed from the outside and probed with only externally-measurable parameters such as power input, cooling rate and coolant temperatures. measurable parameters such as power input, cooling rate and coolant temperatures. The type of information needed by chiller manufacturers and developers in designing and assembling new designs is alsoprovided. How will a given modification in a chiller component affect efficiency and cooling rate? What is the combination of operating conditions of the individual components that maximizes chiller efficiency at a required cooling rate? Many of the chapters can serve as an industry-oriented course tailored to cooling engineers. The book can also constitute part of a university course on cooling systems. Sections of the book can be included in introductory and advanced thermodynamics courses. Both engineering-oriented and physics-oriented topics are covered in most of the chapters. More than a dozen tutorial examples are included.

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Oct 03, 2011 14:34:37

Variable Air Volume Systems for Environmental Quality

Variable Air Volume Systems for Environmental Quality Review

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Stay on top of the hottest topics in HVAC with this guide to economical design, construction, and operation of variable air volume (VAV) systems. It gives you proven methods of using VAV to improve air quality and prevent "sick-building" syndrome. The authors explain VAV operating principles, technology, and utilization. They show how computers help to design and simulate various conditions so you can implement the most ideal system. Sections on assessing conditions explain how to analyze ventilation, thermal comfort, indoor air quality, noise, building pressurization, outdoor air variation, duct static pressure, control stability, and the control scheme. Use of a process perspective throughout clarifies how VAV systems work and how to make them better. Detailed chapters encompass load estimation and calculation, architectural considerations, system selection, inspection, equipment protection, and air balancing and testing. Numerous examples help you avoid VAV design mistakes and installation errors, as well as overcome limitation. Featuring all necessary equations, this guide helps you achieve the best possible indoor air quality.

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Sep 26, 2011 19:57:18

Energy recovery in air handling systems in non-residential buildings - design considerations.(Report): An article from: ASHRAE Transactions

Energy recovery in air handling systems in non-residential buildings - design considerations.(Report): An article from: ASHRAE Transactions Review

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This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on July 1, 2010. The length of the article is 3417 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: In the case of run-around loop systems there are different strategies for capacity control of the liquid flow to obtain optimal operation. Common alternatives are constant flow with variable temperature by means of a shunt group and variable flow by means of two-way valve. A more energy efficient way is direct flow control of a variable speed pump. In direct flow control a much smaller pump power is used compared to valve control. Shunt groups, in particular, result in pump power that is constant and unaffected by the real demand. Calculations based on measurements on a run-around loop system with direct flow control during three months show that the pump power after optimizing the flow can be reduced by 80 %.

Citation Details
Title: Energy recovery in air handling systems in non-residential buildings - design considerations.(Report)
Author: Caroline Markusson
Publication:ASHRAE Transactions (Magazine/Journal)
Date: July 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 2 Page: 154(14)

Article Type: Report

Distributed by Gale, a part of Cengage Learning

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Sep 16, 2011 10:20:06

Design Guide for Combustion Turbine Inlet Air Cooling Systems

Design Guide for Combustion Turbine Inlet Air Cooling Systems Review

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ASHRAE, founded in 1894, is an international organization of some 50,000 persons. ASHRAE fulfills its mission of advancing heating, ventilation, air conditioning, and refrigeration to serve humanity and promote a sustainable world through research, standards writing, publishing, and continuing education.

The ASHRAE Handbooks are the design standard for control of built environments with volumes on Systems and Equipment, HVAC Applications, Refrigeration and Fundamentals. Each is updated every four years. In addition to publishing design guidance for engineers, architects, and facility managers, we also publish a series of texts for classroom use.

Some of the areas we publish in include:
-Energy Modeling and Auditing
-High Performance Building Design
-Psychrometrics
-Indoor Air Quality and Environmental Quality
-Data Center Energy Efficiency
-Noise & Vibration Control
-Humidity Control
-HVAC for Healthcare Facilities

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Sep 15, 2011 06:58:34

Sustainability in the Process Industry: Integration and Optimization (Green Manufacturing & Systems Engineering)

Sustainability in the Process Industry: Integration and Optimization (Green Manufacturing & Systems Engineering) Review

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Improve the energy efficiency of process industry practices

Sustainability in the Process Industry explains process integration and optimization and discusses applications for improving the energy and water efficiency of industrial as well as nonindustrial energy users. Approaches for adapting these methodologies to include the integration of waste and renewable energy sources are covered. This authoritative text contains eight industrial-based case studies and nine testing examples with developed solutions. Details on software tools are also included in this practical guide.

• Optimization goals and application areas within sustainable industrial process design and integration
• Formulating sustainable tasks as optimization problems
• Improving energy efficiency through process integration
• Heat exchange and heat recovery
• Water/mass integration
• Minimizing water use and efficient generation
• New, relevant process integration research results
• Process optimization frameworks, including mathematical programming and P-graph and S-graph frameworks
• Applications of process integration, modeling, and optimization software tools

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• Lean Manufacturing Implementation: A Complete Execution Manual for Any Size Manufacturer
• Pinch Analysis and Process Integration, Second Edition: A User Guide on Process Integration for the Efficient Use of Energy
• Chemical Process: Design and Integration
• Modeling and Simulation of Catalytic Reactors for Petroleum Refining
• Process Engineering for a Small Planet: How to Reuse, Re-Purpose, and Retrofit Existing Process Equipment

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Sep 05, 2011 14:18:05

Ventilation Systems: Design and Performance

Ventilation Systems: Design and Performance Review

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This comprehensive reference guide to ventilation systems provides up-to-date knowledge based on the experience of internationally-recognized experts to deal with current and future ventilation requirements in buildings. Presenting the most recent developments in ventilation research and its applications, this book covers the fundamentals as well as more advanced topics. With rigorous coverage for researchers and a practical edge for building professionals, Ventilation Systems is the one stop guide for the subject.

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Sep 01, 2011 08:53:38

Sustainable On-Site CHP Systems: Design, Construction, and Operations

Sustainable On-Site CHP Systems: Design, Construction, and Operations Review

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PROVEN TECHNIQUES FOR REDUCING ENERGY USE WITH CHP SYSTEMS

Plan, design, construct, and operate a sustainable on-site CHP (combined heat and power) facility using the detailed information in this practical guide. Sustainable On-Site CHP Systems reveals how to substantially increase the energy efficiency in commercial, industrial, institutional, and residential buildings using waste heat and thermal energy from power generation equipment for cooling, heating, and humidity control. In-depth case studies illustrate real-world applications of CHP systems.

Coverage includes:

• CHP basics, power equipment, and thermal design
• Packaged CHP systems
• Regulatory issues
• Carbon footprint, environmental benefits, and emission controls
• Conducting a feasibility study and economic analysis
• CHP plant design and engineering
• Construction, permits, and risk management
• Operation and maintenance
• Performance monitoring and improvement

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Aug 08, 2011 07:42:27

Changes in the cooling systems: changing maintenance requirements and new design concepts are giving cooling systems some well-deserved attention.(Equipment ... An article from: Fleet Equipment

Changes in the cooling systems: changing maintenance requirements and new design concepts are giving cooling systems some well-deserved attention.(Equipment ... An article from: Fleet Equipment Review

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This digital document is an article from Fleet Equipment, published by Babcox Publications, LLC on July 1, 2010. The length of the article is 1938 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

Citation Details
Title: Changes in the cooling systems: changing maintenance requirements and new design concepts are giving cooling systems some well-deserved attention.(Equipment Technology)
Author: Tom Gelinas
Publication:Fleet Equipment (Magazine/Journal)
Date: July 1, 2010
Publisher: Babcox Publications, LLC
Volume: 36 Issue: 7 Page: 42(4)

Distributed by Gale, a part of Cengage Learning

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Jul 08, 2011 12:42:55

Energy-Efficient Building Systems: Green Strategies for Operation and Maintenance

Energy-Efficient Building Systems: Green Strategies for Operation and Maintenance Review

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Proven Strategies and Solutions for Reducing Energy Consumption

Property and facility managers can turn to Energy-Efficient Building Systems as a one-stop guide to operating and maintaining commercial building systems at peak efficiency. Designed to help reduce energy costs and meet environmental standards, this state-of-the-art productivity tool contains fully illustrated, real-world examples of successful green building projects that have achieved significant, energy-saving results.

From energy management and auditing, HVAC systems, cooling towers, and pumping systems…to lighting, electrical systems, automation, and building envelope, this expert resource takes readers step by step through procedures for getting optimal performance from every building system. For each system, the book presents the latest methods for improving efficiency…identifying promising new solutions…evaluating their feasibility…and estimating actual savings. Comprehensive and authoritative, Energy-Efficient Building Systems enables building professionals to:

Get an in-depth understanding of the principles of each building system

Select the most efficient systems for any nonresidential building

Maximize energy efficiency with practical strategies and solutions

Utilize hands-on methods for evaluating feasibility and estimating savings

Review real-world examples of successful green building projects

Inside This Cost-Saving Energy Guide

• Energy Management and Energy Auditing • Air-Conditioning and Central Chiller Systems • Boilers and Heating Systems • Pumping Systems • Cooling Towers • Air Handling and Distribution Systems • Lighting Systems • Building Electrical Systems • Building Automation Systems • Building Envelope

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• Handbook of Energy Audits, Eighth Edition
• Intelligent Buildings and Building Automation
• HVAC Equations, Data, and Rules of Thumb, 2nd Ed.
• Guide to Energy Management, Sixth Edition
• Commercial Energy Auditing Reference Handbook

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Jun 28, 2011 12:28:05