HVAC Systems Design Handbook part 7

... 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 ... subject to the Terms of Use as given at the website. 191 Chapter 7 Design Procedures: Part 5 Central Plants 7. 1 Introduction The design and construction of central plants for...

Ngày tải lên: 20/10/2013, 16:15

... the HVAC designer is enthalpy, particularly the enthalpy of evaporation, or the latent heat of vaporization h fg . This is the amount of heat, in Btu per pound, which Design Procedures: Part ... pressures allow smaller piping but create piping expansion and support problems. In- Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.d...

Ngày tải lên: 17/10/2013, 22:15

... the website. Design Procedures: Part 6 2 47 Figure 8.30 Flow versus plug lift in a control valve. Figure 8.31 Coil heating capacity versus hot water flow rate. Design Procedures: Part 6 Downloaded ... Use as given at the website. Design Procedures: Part 6 243 Figure 8.25 Wheatstone bridge. Figure 8.26 Bridge circuit with calibration and set point. Design Procedures: Part 6 Dow...

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 ... typical water tube velocity of 3 to 7 ft/s, the k factor will fall in the range of 175 to 225 Btu/h/ft 2 of coil surface per ЊF per row. With these values, an HV...

Ngày tải lên: 24/10/2013, 15:15

... website. 321 Chapter 10 Equipment: Part 2 Heating 10.1 Introduction Heating is the first word in the acronym HVAC. It is the most impor- tant part because without heating mankind would have difficulty in surviving. Proper design ... other source, such as a process, an incinerator, or re- frigeration equipment Source: HVAC Systems Design Handbook Downloaded from Digital Engineerin...

Ngày tải lên: 24/10/2013, 15:15

... follows: 3 1min 1ft 1h 1lb w ⌬w ϭ 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 ... 3 67 Chapter 11 Equipment: Part 3 Air-Handling Systems 11.1 Introduction By definition, air conditioning involves control ... reserved. Any use is subject to the Terms...

Ngày tải lên: 28/10/2013, 22:15

... Smaller systems focus on 120/208 V, larger systems on 277 /480 V. Control systems usually step down to 24 V. Utility and campus distribution voltages are often found at 2300, 4160, 72 00, and 12, 470 ... Air Conditioning, May 1 971 , pp. 75 77 . 2. National Electric Code, National Fire Protection Association, Quincy, MA, 1999, revised every 3 years. Electrical Features of HVAC Sys...

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 ... science, but it can and must be mastered by HVAC system designers. The drawings and spec- ifications complement each other, complete the design, and are...

Ngày tải lên: 07/11/2013, 19:15

... 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 ... 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 Handboo...

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 ... 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 produc...

Ngày tải lên: 15/12/2013, 03:15