HVAC Systems Design Handbook part 6

... For design purposes, this value can be used without significant error. The density of water varies from 62 .3 lb/ft 3 at 70ЊF to 60 .1 lb/ft 3 at 200ЊF. Fo r HVAC design purposes, the value of 62 .3 ... 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 Proced...

Ngày tải lên: 17/10/2013, 22:15

... 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 Downloaded from Digital ... the website. Design Procedures: Part 6 247 Figure 8.30 Flow versus plug lift in a control valve. Figure 8.31 Coil heating capacity versus hot water flow rate. Design Procedure...

Ngày tải lên: 20/10/2013, 16:15

... website. 191 Chapter 7 Design Procedures: Part 5 Central Plants 7.1 Introduction The design and construction of central plants for heating and cooling is one of the most challenging and interesting aspects of the HVAC design ... plant, traffic, noise, and emis- sions from the more densely populated areas. Source: HVAC Systems Design Handbook Downloaded from Digital Engineerin...

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 ... although 8 to 10ЊF is common for vapor compression systems and 15 to 20ЊF is common for absorption systems. The approach is the Equipment: Part 1 Downloaded fro...

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 ... Association, Exhaust Systems for Air Conveying of Vapors, Gases Mists and Non-Combustible Particulate Solids, NFPA 91-1999. 2. Fundamentals Governing the Design and Op...

Ngày tải lên: 28/10/2013, 22:15

... website. 4 06 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 ... 220– 180 240 252– 228 230 253– 207 480 504– 4 56 460 5 06 414 2300 2415–2185 2200 2420–1980 4 160 4370–3950 4000 4400– 360 0 12.4 Power Factor In ac systems where the voltage is...

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