hvac systems design handbook roger w haines
HVAC Systems Design Handbook part 6
... Engineers, Inc., www.ashrae.org. Reprinted by permission from ASHRAE Handbook, 1989 Fundamentals, Chap. 21, Table 2. Design Procedures: Part 4 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... Inc., www.ashrae.org. Reprinted by permission from ASHRAE Handbook, 2001 Fundamentals, Chap. 35, Fig. 1.) Design Procedures: Part 4 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... 6.35. Here the flow with one pump will be about 75 percent of design flow. However, unless a bypass is provided around the second pump, the system curve will change some- what with only one pump...
Ngày tải lên: 17/10/2013, 22:15
HVAC Systems Design Handbook part 8
... implemented. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All ... capacity versus hot water flow rate. Design Procedures: Part 6 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. ... (8.2) pi where K i ϭ integral gain constant and ͐ edtϭ integral of the error with respect to time. Design Procedures: Part 6 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...
Ngày tải lên: 20/10/2013, 16:15
HVAC Systems Design Handbook part 7
... suggesting a low-level site. Where water systems are involved, pressures may become very high at lower building levels. This is less of a problem with chillers than with boilers. Systems with boilers ... heat will be supplied from the boiler. When cooling is needed, the return water will be warmer and will be cooled by the evaporative water cooler. Much of the time, some heat pump units will ... scrape it off into a tank which is part of the circulated chilled water system. Design Procedures: Part 5 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...
Ngày tải lên: 20/10/2013, 16:15
HVAC Systems Design Handbook part 9
... the water, (2) the internal tower volume in which air and water come into contact, (3) the airflow rate through the tower, and (4) the water flow rate. Tower fill material used to be redwood. Now ... counterflow. In both arrangements, the water enters at the top of the tower and flows downward through it. In the counterflow arrangement, the air enters at the bottom and flows upward. In the cross-flow ... Thermoelectric re- Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All...
Ngày tải lên: 24/10/2013, 15:15
HVAC Systems Design Handbook part 10
... a steam-pressure-reducing station (see Fig. 6.1). A water-to-water heat exchanger (Fig. 10.12) may be used in many ways. When it is used with high-temperature water (HTW), the HTW is always in the tubes. This provides ... control valve may be a two-way or a three-way type, as shown in Fig. 10.13. This may be part of a cascade arrangement, shown in Fig. 6.3. Two-way valves are used in variable-flow systems. 10.13 Heat ... even when air is blown across the water surface. Wicks of porous ceramic or similar materials may be added. When the base of the wick is immersed in water, water spreads Equipment: Part 2 Downloaded...
Ngày tải lên: 24/10/2013, 15:15
HVAC Systems Design Handbook part 11
... 0.0011 lb /lb (11.2) wa Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. ... is used when refrigerated cooling is required. Equipment: Part 3 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill ... is with the VAV systems previously described. 11.5.3 Induction units These units are described in Sec. 11.2.5. Equipment: Part 3 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...
Ngày tải lên: 28/10/2013, 22:15
HVAC Systems Design Handbook part 12
... to provide power when the primary service is interrupted. UPS systems are of interest and concern to the HVAC systems de- signer in two ways: Electrical Features of HVAC Systems Downloaded from ... accommodate other- wise required roof drain lines or wet sprinkler fire protection. Heating Electrical Features of HVAC Systems Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... a motor for both load and fan wheel inertia. Fan vendors can help with Electrical Features of HVAC Systems Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...
Ngày tải lên: 07/11/2013, 19:15
HVAC Systems Design Handbook part 13
... relationship between owner and con- Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. ... ASHRAE Handbook, 2000 HVAC Systems and Equipment, Chap. 48, ‘‘Codes and Standards.’’ Design Documentation: Drawings and Specifications Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... Design Documentation: Drawings and Specifications 423 Figure 13.3 (Continued ) Design Documentation: Drawings and Specifications Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...
Ngày tải lên: 07/11/2013, 19:15
HVAC Systems Design Handbook part 14
... owners who have staff personnel with these capabilities. And many owners do not After Design: Through Construction to Operation Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... what was wanted or needed. Rejection at such a late date is awkward and sometimes embarrassing, but it is better handled sooner than later. The designer or reviewer needs to be ac- quainted with ... with the design intent in this phase of the work. 14.2.3 Work oversight and field review The designer can only expect what the designer inspects! Periodically during construction the project designer...
Ngày tải lên: 07/11/2013, 19:15
Tài liệu HVAC Systems Design Handbook part 15 pptx
... this definition. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All ... any other kind of writing, it takes practice, time, and effort. The neophyte writer may Technical Report Writing Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... can be used to Technical Report Writing Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any...
Ngày tải lên: 15/12/2013, 03:15
Tài liệu HVAC Systems Design Handbook part 16 pdf
... volume, lbm/ft 3 . Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All ... ‘‘Fluid Flow.’’ 2. Ingersoll-Rand, Cameron Hydraulic Data, 17th ed., Woodcliff Lake, N.J., 1988. Engineering Fundamentals: Part 1 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... container of known volume or of observing the portion of a container filled in a given time. Engineering Fundamentals: Part 1 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...
Ngày tải lên: 15/12/2013, 03:15
Tài liệu HVAC Systems Design Handbook part 17 pptx
... of water at 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 ... first law, we know that some things will not happen unless we expend or give up something to make them happen. Ⅲ Example: A heat resource cannot be fully converted to work. Work can be withdrawn from ... Useful work must be derived from the energy that would flow from the high potential region to the lower potential region. But 100 percent of the energy cannot be converted to work. If it were,...
Ngày tải lên: 15/12/2013, 03:15
Tài liệu HVAC Systems Design Handbook part 18 docx
... ϭ ЊF ϩ 460Њ. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All ... as given at the website. Engineering Fundamentals: Part 3 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. ... geometry. Engineering Fundamentals: Part 3 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any...
Ngày tải lên: 15/12/2013, 03:15
Tài liệu HVAC Systems Design Handbook part 19 doc
... all the 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 ... pressure of water vapor is Engineering Fundamentals: Part 4 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. ... gas laws with only a small degree of error, which is not significant in most HVAC processes. The prop- erties of interest in this discussion are the dry-bulb (db), wet-bulb (wb), and dew point...
Ngày tải lên: 15/12/2013, 03:15
Tài liệu HVAC Systems Design Handbook part 20 pdf
... interference range. Source: HVAC Systems Design Handbook Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All ... compressors, air flowing in ducts, and water and steam flowing in pipes. The paths for transmission are Engineering Fundamentals: Part 5 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. 500 Chapter Twenty Figure...
Ngày tải lên: 15/12/2013, 03:15
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