hvac systems design handbook free download 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

... or design office 5 Space limitations 6 Maintainability / reliability 7 Central plant versus distributed systems 8 Simplicity and controllability stood, the designer cannot provide an adequate HVAC ... 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 ... difficult and require a thorough inquiry by the HVAC de-signer into the process and its needs Until the process is fully Trang 2under-TABLE 4.1 Criteria for HVAC System andEquipment Selection 1 Demands

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, ... ASHRAE Handbook, 2000 HVAC Systems and Applications, Chap 14, ‘‘Medium- and High-Temperature Water-Heating Systems.’’ Ingersoll-Rand, Cameron Hydraulic Data, Woodcliff Lake, N.J., 1988 Downloaded

Ngày tải lên: 17/10/2013, 22:15

... 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) ... Handbook, 2001 Fundamentals, Chap 36, ‘‘Abbreviations and Symbols.’’ ASHRAE Handbook, 1999 HVAC Applications, Chap 38, ‘‘Computer.. .Design Documentation: Drawings and Specifications Design ... 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 Downloaded from Digital

Ngày tải lên: 07/11/2013, 19:15

... opportunities for innovative HVAC design Industrial hygiene criteria complement HVAC criteria in these environments 2.9 Designing for Operation and Maintenance Over the life of the HVAC system, the operating ... may be necessary Radiant effects are often beyond the control of the HVAC designer but should be taken into account in the HVAC design Typical radiant effects are caused by windows (cold in winter, ... No HVAC system can be designed without a thorough knowledge of how it is to be controlled Psychrometrics is helpful in control system design, since the psychrometric chart which describes the HVAC

Ngày tải lên: 26/01/2014, 14:20

... Source: HVAC Systems Design Handbook Chapter Design Procedures: Part Load Calculations 3.1 Introduction All solutions to engineering ... of Use as given at the website Design Procedures: Part Design Procedures: Part 71 Figure 3.9 Calculation form The design airflow rate is CFM ϭ qs TD ϫ AF (3.6) Downloaded from Digital 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

Ngày tải lên: 26/01/2014, 14:20

... at δ = 0° for stiffness preserving design is (17.128) which indicates, at δ = 0°, that the mass of C4T11 is equal to that of C4T10 in a stiffness-preserving design Therefore, the mass reduction ... stiffness-preserving design Therefore, the mass reduction of C4T1 i structure in a stiffness-preserving design is unlikely to happen However, if the horizontal string t h is added in the C4T11 element ... 8Figure 17.45 showing all the possible configurations of a two-stage tensegrity can be quite usefulin designing a deployable tensegrity beam made of many stages The deployment of a beam withmany stages

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 ... Suspension Systems 12.1 Introduction Vibration Isolation vs. Vibration Absorption • Classification of Suspension Systems • Why Semi-Active Suspension? 12.2 Semi-Active Suspensions Design ... 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

Ngày tải lên: 21/06/2014, 21:20

... the standard synthesis of a servosystem formechanical systems However, robotic systems have some essential differences to other mechanicalsystems For example, robots have variable moments of inertia ... control systems of the newest generations of robotshave to take into account the dynamics of robots The control law which takes into account all (orsome of) dynamic forces in the robotic systems ... the joint axis increase Ifduring synthesis of servosystems we have not included the mass and the moment of inertia of thepayload, the servosystems can become underdamped which causes oscillations

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

... panel of the CNC system Readers are referred to machine design handbooks and texts for the basics of designing stationary, are covered in this handbook 4.2 Chatter Vibrations in Cutting Machine tool ... bodies The stationary parts carry moving bodies, such as table and spindle drives They must be designed to carry large weights and absorb vibrations transmitted by the moving and rotating parts ... assembly Because the parts to be machined will vary depending on the end-user, the builder must design the machine tool structure and control of drives to deliver maximum accuracy during machining

Ngày tải lên: 02/07/2014, 12:20