hvac systems design handbook fourth edition

... ASHRAE Handbook, 2000 HVAC Systems and Applications, Chap. 14, ‘‘Medium- and High-Temperature Water-Heating Systems. ’’ 6. Ingersoll-Rand, Cameron Hydraulic Data, Woodcliff Lake, N.J., 1988. Design ... the Terms of Use as given at the website. Design Procedures: Part 4 189 3. ASME, Power Piping Code, ANSI / ASME B31.1-1995. 4. ASHRAE Handbook, 2000 HVAC Systems and Applications, Chap. 11, ‘‘District ... installations. In general, in-line pumps are used in small systems or secondary systems, such as freeze prevention loops. Base-mounted pumps are Design Procedures: Part 4 Downloaded from Digital Engineering...

Ngày tải lên: 17/10/2013, 22:15

... website. 223 Chapter 8 Design Procedures: Part 6 Automatic Controls 8.1 Introduction HVAC systems are sized to satisfy a set of design conditions, which are selected to generate a maximum load. Because these design ... properly designed, operated, and maintained automatic control system is accurate and will provide economical operation of the HVAC system. Unfortunately, not all con- trol systems are properly designed, ... sources Several types of energy are used in control systems. Most older HVAC systems use pneumatic devices, with low-pressure compressed air at 0to20lb/in 2 gauge. Many systems are electric, using 24 to 120...

Ngày tải lên: 20/10/2013, 16:15

... another discussion. The HVAC systems designer will recognize plants as po- tential areas of specialty experience as assignments and interest allow. References 1. ASHRAE Handbook, 2000 HVAC Systems and Equipment, ... Chap. 14, ‘‘Medium and High Temperature Water Heating Systems. ’’ 2. ASHRAE Handbook, 1999 HVAC Applications, Chap. 33, ‘‘Thermal Storage.’’ Design Procedures: Part 5 Downloaded from Digital Engineering ... the systems described are given in Figs. 7.17, 7.18, and 7.19. These are simple block diagrams to illustrate the con- cepts. Design of complete plants requires the development of a fully Design...

Ngày tải lên: 20/10/2013, 16:15

... aircraft where light weight and simplicity are important. Thermoelectric re- Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... Air Conditioning Engineers, Inc., www.ashrae.org. Reprinted by permission from ASHRAE Handbook, 2000 HVAC Systems and Equipment, Chap. 34, Fig. 4.) Sizes range up to as high as 200 tons or more ... Air Conditioning Engineers, Inc., www.ashrae.org. Reprinted by permission from ASHRAE Handbook, 2000 HVAC Systems and Equipment, Chap. 34, Fig. 7.) rolling-piston type, the rotor turns on an eccentric...

Ngày tải lên: 24/10/2013, 15:15

... been withdrawn but not replaced.) 5. ASHRAE Handbook, 2000 HVAC Systems and Equipment, Chap. 6, ‘‘Panel Heating and Cooling.’’ 6. ASHRAE Handbook, 1999 HVAC Applications, Chap. 32, ‘‘Solar Energy ... 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) Copyright ... Air Conditioning Engineers, Inc., www.ashrae.org. Reprinted by permission from ASHRAE Handbook, 2000 HVAC Systems and Equip- ment, Chap. 44, Fig. 23.) The coil loop thermosyphon is similar to...

Ngày tải lên: 24/10/2013, 15:15

... 30,000 Btu/h ϫϫ ϫϫ 3 5555 ft 0.075 lb 60 min 1059 Btu a ϭ 0.0011 lb /lb (11.2) wa Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... collection hoods and exhaust systems. Laboratory and industrial fume hoods require large exhaust air quantities. Sev- eral standards cover the design of some types of exhaust systems. 1,2 11.11 Smoke ... environmental air-handling systems for primary or supple- mentary smoke control is neither simple nor economical. There is a lack of good data on the design of adequate smoke control systems, and code...

Ngày tải lên: 28/10/2013, 22:15

... 406 Chapter Twelve 1. UPS systems may be a useful, even required component of a critical HVAC service and will be included in the HVAC and electric system design. 2. UPS systems themselves create ... of remote origin. The HVAC designer must work closely with the electrical designer to sat- isfy the needs of both disciplines. 12.13 Summary In building construction, HVAC design is interwoven ... website. 397 Chapter 12 Electrical Features of HVAC Systems 12.1 Introduction While most HVAC designers will have the support of a competent elec- trical design staff, it is important to understand...

Ngày tải lên: 07/11/2013, 19:15

... 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) Copyright ... Construction Specifications Institute, MasterFormat. 4. ASHRAE Handbook, 2000 HVAC Systems and Equipment, Chap. 48, ‘‘Codes and Standards.’’ Design Documentation: Drawings and Specifications Downloaded ... as given at the website. 411 Chapter 13 Design Documentation: Drawings and Specifications 13.1 Introduction Design documents evolve from and include the designer’s calculations, equipment selections,...

Ngày tải lên: 07/11/2013, 19:15

... during construction, relieving the design office of any possible in- volvement, except to clarify a conflict in documents or a design error. Source: HVAC Systems Design Handbook Downloaded from Digital ... building and its systems. 14.3.3 Observation of operation Many specifications require the HVAC contractor to certify in writing that the HVAC systems and controls are operating as designed and specified. ... project designer. 14.2 Participation during Construction Designer participation during construction and beyond varies greatly with design office practice and with the owner’s desires. Some design offices...

Ngày tải lên: 07/11/2013, 19:15

... value of the final report will re- late strongly to the clarity of this definition. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... of Use as given at the website. 439 Chapter 15 Technical Report Writing 15.1 Introduction An HVAC designer is almost certain to be faced with the need to write reports. The ability to produce ... Figure 15.2 illustrates a report form sheet which may be used to include text, tables, and figures. A design firm may be known to some extent by the quality of its report formatting and presentation. Document...

Ngày tải lên: 15/12/2013, 03:15

... nearly every aspect of HVAC sys- tems design. Pumps, fans, coils, heat exchangers, refrigeration sys- tems, process systems, boilers, deaerators, water softeners and treat- ment systems, water supply ... Blood and catsup are nonnewtonian fluids. Density ␳ : Mass per unit volume, lbm/ft 3 . Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... piping and duct systems. It requires attention to differences in elevation for pumping of ‘‘open’’ systems and teaches us to recognize static-pressure concerns in both closed and open systems. Static...

Ngày tải lên: 15/12/2013, 03:15

... the top of a hill has potential energy with respect to the bottom of the hill. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... knowledge helps an HVAC designer to identify reality among the often overstated claims of overenthusiastic inventors and salespeople. The mathemat- ical relationships of thermodynamics allow the designer ... energy input becomes a benefit. Q ϩ Q evap in COP ϭϭCOP ϩ 1 heat cool Q in In heat pump systems, the system designer should again try to work with the smallest possible thermal lift to get maximum...

Ngày tải lên: 15/12/2013, 03:15

... is used, or for absolute temperatures the Rankine (ЊR) scale: ЊR ϭ ЊF ϩ 460Њ. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... and Air Conditioning Engineers, Inc., www.ashrae.org. Reprinted by permission from ASHRAE Handbook, 1999 HVAC Ap- plications, Chap. 32, Fig. 3.) A 1 ϭ face area of smaller surface, ft 2 T 1 , T 2 ϭ ... fundamentals, particularly as they apply to HVAC. For a detailed, rigorous treat- ment, the reader should refer to a good college-level text on heat trans- fer or to the ASHRAE Handbook. 1 18.2 Heat Transfer...

Ngày tải lên: 15/12/2013, 03:15

... very brief. The subject is very important to the HVAC designer, and further study of Ref. 1 and other sources is recommended. Every set of HVAC design calculations should include one or more psychrometric ... water it can hold at a specified temperature and pressure. The properties of moist Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... not uniformly spaced. (Percentage of saturation lines would be uniformly spaced but are not used in HVAC design. ) When any two properties of a moist air sample are known, a state point may be plotted...

Ngày tải lên: 15/12/2013, 03:15

... from ASHRAE Hand- book, 1987 HVAC Systems and Applications; subsequent edi- tions are similar, i.e., 2001 Fundamentals, Chap. 7, Table 11. of the HVAC systems, the HVAC designer is not generally ... for masking unwanted sound, is ran- dom sound in the speech interference range. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... design should eliminate these problems. References 1. ASHRAE Handbook, 2001 Fundamentals, Chap. 7, ‘‘Sound and Vibration.’’ 2. ASHRAE Handbook, 1999 HVAC Applications, Chap. 46, ‘‘Sound and Vibration Con- trol.’’ Engineering...

Ngày tải lên: 15/12/2013, 03:15

Ngày tải lên: 15/12/2013, 03:15

Ngày tải lên: 26/01/2014, 14:20

Ngày tải lên: 26/01/2014, 14:20

Ngày tải lên: 26/01/2014, 14:20

Ngày tải lên: 26/01/2014, 14:20