hvac systems design handbook fifth edition pdf

... Source: HVAC Systems Design Handbook Chapter HVAC Engineering Fundamentals: Part 1.1 Introduction This chapter is devoted ... impact on the design of HVAC systems Particular codes are sufficiently diverse in their adoption and implementation that it is unwise for this book to list any specifics The HVAC system designer should ... strings A word of caution Energy conservation is important in HVAC design, but it is not the purpose or function of the HVAC system HVAC systems are intended to provide comfort, or a controlled environment

Ngày tải lên: 26/01/2014, 14:20

... difficult and require a thorough inquiry by the HVAC de- signer into the process and its needs. Until the process is fully under- Source: HVAC Systems Design Handbook Downloaded from Digital Engineering ... Maintainability/ reliability 7. Central plant versus distributed systems 8. Simplicity and controllability stood, the designer cannot provide an adequate HVAC system. Most often, different parts of the process ... acceptable (see Chap. 11). Most HVAC systems for process environments have opportunities for heat reclaim and other ingenious ways of conserving energy. Off-peak thermal storage systems are becoming popular

Ngày tải lên: 26/01/2014, 14:20

... Source: HVAC Systems Design Handbook Chapter Design Procedures: Part Fluid-Handling Systems 6.1 Introduction All air-handling units (AHUs) and ... of Use as given at the website Design Procedures: Part Design Procedures: Part 189 ASME, Power Piping Code, ANSI / ASME B31.1-1995 ASHRAE Handbook, 2000 HVAC Systems and Applications, Chap 11, ... subject to the Terms of Use as given at the website Design Procedures: Part Design Procedures: Part 6.7 181 Pumps Centrifugal pumps are used in HVAC systems for circulation of brine and chilled, hot,

Ngày tải lên: 17/10/2013, 22:15

... discussion The HVAC systems designer will recognize plants as potential areas of specialty experience as assignments and interest allow References 1 ASHRAE Handbook, 2000 HVAC Systems and ... website Design Procedures: Part 5 Design Procedures: Part 5 221 ‘‘Steam Systems ’; Chap 11, ‘‘District Heating and Cooling’’; Chap 12, ‘‘Hydronic Heating and Cooling System Design ’; ... storage systems Thermal storage is typically sized on the basis of ton-hours... Chiller-based systems have been designed from 50 tons up to several thousand tons The technology for such systems

Ngày tải lên: 20/10/2013, 16:15

... other source, such as a process, an incinerator, or re- frigeration equipment Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) ... much as 15 to 20 percent of steam capacity Some industrial plant systems are designed for 100 percent makeup In small boiler systems, condensate is returned by gravity to a receiver and then ... control systems are being marketed, but their value is limited and costs are high They should be evaluated as a developing technology 10. 7 Boiler Feedwater and Water Treatment Systems Hot

Ngày tải lên: 24/10/2013, 15:15

... Handbook, 2001 Fundamentals, Chap 36, ‘‘Abbreviations and Symbols.’’ ASHRAE Handbook, 1999 HVAC Applications, Chap 38, ‘‘Computer.. .Design Documentation: Drawings and Specifications Design ... identified as being of paramount importance to the relationship between owner and con- Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) ... lack of acceptance—of the product, which is the design. Early in the development of computer-aided design (CAD) techniques, it was felt that computer- Design Documentation: Drawings and Specifications

Ngày tải lên: 07/11/2013, 19:15

... Source: HVAC Systems Design Handbook Chapter Design Procedures: Part Load Calculations 3.1 Introduction All solutions to engineering ... as given at the website Design Procedures: Part Design Procedures: Part 73 where CFM ϭ design airflow rate for cooling, ft3 /min qs ϭ sensible cooling load, Btu/h TD ϭ design temperature difference ... after the design is completed This chapter refers to a great many data tables from the ASHRAE Handbook Many of these tables require several pages in the 81⁄2-in by 11-in format of the Handbook

Ngày tải lên: 26/01/2014, 14:20

... rated. The HVAC designer is particularly interested in the effects on horsepower, pressure, and volume consequent to varying the speed of the fan in a system. Source: HVAC Systems Design Handbook Downloaded ... 95 Chapter 5 Design Procedures: Part 3 Air-Handling Systems 5.1 Introduction In most HVAC systems, the final energy transport medium is moist air—a ... diameter and d ϭ air density. For further variations, see ASHRAE Handbook, 2000 HVAC Systems and Equipment, Chap. 18, Table 2, p. 18.4. Design Procedures: Part 3 Downloaded from Digital Engineering

Ngày tải lên: 26/01/2014, 14:20

... the design of one component (the controller) should be influenced by the (given) dynamics of all other components However, in systems design, where more than one component remains to be designed, ... Sultan, M Corless,... biological design that govern the cytoskeleton, Journal of Cell Science, 104(3), 613–627, 1993 36 R.E Skelton, Dynamic Systems Control — Linear Systems Analysis and Synthesis, ... structure design, where the structure and control disciplines were ingredients in a multidisciplinary system design, but no interdisciplinary tools were developed to integrate the design of

Ngày tải lên: 21/06/2014, 21:20

... the early design steps At any stage the use of more complex models is possible for evaluating the performance or more advanced design strategies If the design methods allow, design- by-simulation ... applicability of these systems. 14-16 12.2 Semi-Active Suspensions Design 12.2.1 Introduction SA suspensions can achieve most of the performance characteristics of fully active systems, thus allowing ... principles and design issues for SA suspension systems, which are discussed in the form of a vibration absorber and vibration isolator. 12.2.2 Semi-Active Vibration Absorption Design With

Ngày tải lên: 21/06/2014, 21:20

... the standard synthesis of a servosystem for mechanical systems. However, robotic systems have some essential differences to other mechanical systems. For example, robots have variable moments of ... designates the control concepts by specifying... inaccuracy in the robot and environment (e.g., for robust control design purposes), the problem becomes even more complicated For control design ... integrate control mechanical system design. 39 This approach is based on micro–macro manipulator structures that provide inherently stable and well-suited subsystems for high bandwidth active force

Ngày tải lên: 21/06/2014, 21:20

... specific kinds of technological systems (systems with recognition © 2002 by CRC Press LLC 8596Ch24Frame Page 640 Tuesday, November 6, 2001 9:43 PM in the loop, systems with elements of learning ... diagonal dominance of convenient position control systems of industrial robots are derived in S ˇ urdilovi´c. 53 In the majority of industrial robot systems, diagonal dominance is achieved by high ... force control methods cannot be suitably applied in commercial robotic systems lies in the fact that commercial robots are designed as positioning devices. The feedback term, i.e., the signal proportional

Ngày tải lên: 21/06/2014, 21:20

... of m subsystems: (2 m – n) subsystems correspond to the powered joints modeled as in Equation (27.47), and (n – m) composite subsystems modeled as in Equation (27.56) In fact, all the subsystems ... the subsystems However, these tests require that all subsystems are stable To analyze stability of the mechanisms including unpowered joints, we introduced the so-called composite subsystems ... between subsystems ( f i ∆Pi ) are neglected): ˙ ∆x i = Ai ∆x i + bi N (t , ∆ui ) , ∀i ∈ I1 (27.62) The decoupled model of the system (Equation (27.62)) represents a set of decoupled linear subsystems

Ngày tải lên: 21/06/2014, 21:20