HVAC Systems Design Handbook part 12
HVAC Systems Design Handbook part 12
... 397Chapter 12 Electrical Featuresof HVAC Systems 12. 1 IntroductionWhile most HVAC designers will have the support of a competent elec-trical design staff, it is important ... over into plant design considerations. 12. 11 Lighting Systems Lighting design ranges from following a cookbook to a high-level artform. It is not the responsibility of the HVAC designer, but lightingimposes ... of remote origin. The HVAC designer must work closely with the electrical designer to sat-isfy the needs of both disciplines. 12. 13 SummaryIn building construction, HVAC design is interwoven...
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HVAC Systems Design Handbook part 6
... Design Procedures: Part 4 1893. ASME, Power Piping Code, ANSI / ASME B31.1-1995.4. ASHRAE Handbook, 2000 HVAC Systems and Applications, Chap. 11, ‘‘District ... ASHRAE Handbook, 2000 HVAC Systems and Applications, Chap. 14, ‘‘Medium- andHigh-Temperature Water-Heating Systems. ’’6. Ingersoll-Rand, Cameron Hydraulic Data, Woodcliff Lake, N.J., 1988. Design ... the HVAC designer isenthalpy, particularly the enthalpy of evaporation, or the latent heatof vaporization hfg. This is the amount of heat, in Btu per pound, which Design Procedures: Part...
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HVAC Systems Design Handbook part 8
... are used in control systems. Most older HVAC systems use pneumatic devices, with low-pressure compressed air at0to20lb/in2gauge. Many systems are electric, using 24 to 120 V oreven higher ... the website. Design Procedures: Part 6 247Figure 8.30Flow versus plug lift in a control valve.Figure 8.31Coil heating capacity versus hot water flow rate. Design Procedures: Part 6Downloaded ... Use as given at the website. Design Procedures: Part 6 243Figure 8.25Wheatstone bridge.Figure 8.26Bridge circuit with calibration and set point. Design Procedures: Part 6Downloaded from Digital...
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HVAC Systems Design Handbook part 7
... website.191Chapter7 Design Procedures: Part 5Central Plants7.1 IntroductionThe design and construction of central plants for heating and coolingis 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 Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)Copyright ... 3 to 5 tons up to 50 tons ormore. Chiller-based systems have been designed from 50 tons up toseveral thousand tons. The technology for such systems is more thanfifty years old. See Figs. 7.13a...
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HVAC Systems Design Handbook part 9
... aircraftwhere 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 theEquipment: Part 1Downloaded from Digital Engineering Library @ ... at the website.Equipment: Part 1 309Figure 9.22Partial sectionthrough a finned coil.Figure 9.23Heat transfer through a tube wall.that area may look good to the designer, but the system won’t...
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HVAC Systems Design Handbook part 10
... website.321Chapter10Equipment: Part 2Heating10.1 IntroductionHeating is the first word in the acronym HVAC. It is the most impor-tant part because without heating mankind would have difficulty insurviving. Proper design ... other source, such as a process, an incinerator, or re-frigeration equipmentSource: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)Copyright ... asmuch 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 re-ceiver and then...
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HVAC Systems Design Handbook part 11
... 30,000 Btu/h ϫϫ ϫϫ35555 ft 0.075 lb 60 min 1059 Btuaϭ 0.0011 lb /lb (11.2)waSource: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)Copyright ... room and supply airtemperatures (58ЊF supply air), the design flow rate of air, designatedCFM, in cubic feet per minute (cfm) will be 120 ,0003CFM ϭϭ5555 ft /min (cfm) (11.1)20 ϫ 1.08where ... components se-lected by the designer. This allows the designer complete flexibility ofsize and arrangement. The built-up AHU tends to have a higher firstEquipment: Part 3Downloaded from Digital...
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HVAC Systems Design Handbook part 13
... identified as being ofparamount 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 andmust be mastered by HVAC system designers. The drawings and spec-ifications complement each other, complete the design, and are part ofthe legally binding commitment of ... Construction Specifications Institute, MasterFormat.4. ASHRAE Handbook, 2000 HVAC Systems and Equipment, Chap. 48, ‘‘Codes andStandards.’’ Design Documentation: Drawings and SpecificationsDownloaded...
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HVAC Systems Design Handbook part 14
... project designer.14.2 Participation during ConstructionDesigner participation during construction and beyond varies greatlywith 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 Handbook Downloaded from Digital ... building and its systems. 14.3.3 Observation of operationMany specifications require the HVAC contractor to certify in writingthat the HVAC systems and controls are operating as designed andspecified....
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Tài liệu HVAC Systems Design Handbook part 15 pptx
... 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 ... 439Chapter15Technical Report Writing15.1 IntroductionAn HVAC designer is almost certain to be faced with the need to writereports. The ability to produce ... FifteenFigure 15.3Report organization. Note that figures and tables for each part of the reportgo behind the text for that part. techniques. Almost any binding system which delivers a neat and de-sirable...
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