HVAC systems design handbook, fourth edition

... website Design Procedures: Part Design Procedures: Part 165 Figure 6. 9 shows flow versus head loss (pressure drop per 100 ft) and velocity in schedule 40 steel pipe This is for water at 60 ЊF, but ... the Terms of Use as given at the website Design Procedures: Part Design Procedures: Part TABLE 6. 8 169 Iron and Copper Elbow Equivalents See Table 6. 7 for equivalent length...

Ngày tải lên: 17/10/2013, 22:15

... the Terms of Use as given at the website Design Procedures: Part Design Procedures: Part 237 Figure 8. 18 Pitot-tube flow sensor V ϭ C͙VP (8. 4) where, for HVAC work, V is in feet per minute and VP ... as given at the website Design Procedures: Part Design Procedures: Part 245 Figure 8. 28 Straight-through (two-way) control valve Control valves A control valve (Fig 8. 28...

Ngày tải lên: 20/10/2013, 16:15

... at the website Design Procedures: Part Design Procedures: Part 219 Figure 7. 17 Engine driven cogeneration configured flow diagram (P&ID) for the proposed system with subsequent design for each ... The HVAC systems designer will recognize plants as potential areas of specialty experience as assignments and interest allow References ASHRAE Handbook, 2000 HVAC Systems and Equ...

Ngày tải lên: 20/10/2013, 16:15

... Equipment: Part Equipment: Part 299 Air out Screen Condenser coil Hot gas in Liquid out Air in Figure 9. 11 Air-cooled condenser coil face area, fan airflow rate, desired condensing temperature, and design ... of Use as given at the website Equipment: Part Equipment: Part 3 09 Figure 9. 22 Partial section through a finned coil that area may look good to the designer, but the syst...

Ngày tải lên: 24/10/2013, 15:15

... at the website Equipment: Part Equipment: Part 355 Figure 10. 29 Psychrometric chart for Fig 10. 28, without heat recovery Figure 10. 30 Psychrometric chart for Fig 10. 28, with heat recovery Downloaded ... given at the website Equipment: Part Equipment: Part 363 Figure 10. 38 Humidifier with radiant heater Ⅲ Airflow rate: 10, 000 ft3 /min with 20 percent outside air Ⅲ At desig...

Ngày tải lên: 24/10/2013, 15:15

... subject to the Terms of Use as given at the website Equipment: Part Equipment: Part 379 Figure 11. 11 Fan and system curves for Fig 11. 10 If no fan volume control device is used, the fan will nevertheless ... hoods and exhaust systems Laboratory and industrial fume hoods require large exhaust air quantities Several standards cover the design of some types of exhaust systems. 1,2...

Ngày tải lên: 28/10/2013, 22:15

... Features of HVAC Systems 406 Chapter Twelve 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 UPS systems ... The HVAC designer must work closely with the electrical designer to satisfy the needs of both disciplines 12. 13 Summary In building construction, HVAC design is interwoven w...

Ngày tải lên: 07/11/2013, 19:15

... the Terms of Use as given at the website Design Documentation: Drawings and Specifications Design Documentation: Drawings and Specifications 13. 3.1 413 Drawing size and scale Drawing size and ... product 13. 3.9 Use of computers in drafting The use of computers in design, drafting, and specification writing has proliferated in recent years.2 Computer-aided design and drafting (CADD)...

Ngày tải lên: 07/11/2013, 19:15

... 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 ... than later The designer or reviewer needs to be acquainted with the design intent in this phase of the work 14. 2.3 Work oversight and field review The designer can only expect wh...

Ngày tải lên: 07/11/2013, 19:15

... follow the outline of Sec 15. 2, as shown in Fig 15. 3 Figures and tables for each section may be embedded with the related paragraphs or grouped at the end of the section 15. 6 Letter Reports Many ... logo and borders for report pages See Fig 15. 2 There are many binding methods available, ranging from three-ring looseleaf styles to mechanical clip systems to standard bound-book Downlo...

Ngày tải lên: 15/12/2013, 03:15

... airside and waterside 16. 6 Summary Fluid mechanics issues show up in nearly every aspect of HVAC systems design Pumps, fans, coils, heat exchangers, refrigeration systems, process systems, boilers, ... 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 o...

Ngày tải lên: 15/12/2013, 03:15

... COPcool ϩ Qin In heat pump systems, the system designer should again try to work with the smallest possible thermal lift to get maximum beneficial effect for least input 17. 7 Specific Heat Cp The ... 1.08 Btu/[h ⅐ (ft3 /min) ⅐ ЊF] Q ϭ CFM(1.08)(T1 Ϫ T2 )Btu/h 17. 8 Summary Thermodynamics is an interesting and valuable study for the HVAC designer Its principles define the concept of energy...

Ngày tải lên: 15/12/2013, 03:15

... Fundamentals: Part Engineering Fundamentals: Part 463 Figure 18. 2 Heat transfer through a tube wall 9.10) and the finned coil (see Fig 9.20) In both cases, the barrier is a tube wall, as in Fig 18. 2 Heat ... evaporation and condensation of moisture creates additional design issues which must be addressed by the HVAC system designer References ASHRAE Handbook, 2001 Fundamentals, Ch...

Ngày tải lên: 15/12/2013, 03:15

... examples in Secs 10 .19. 2 and 10 .19. 3 19. 5.6 Chemical dehumidification This process is described in Sec 11.7.2 19. 6 The Protractor on the ASHRAE Psychrometric Chart Figure 19. 1 includes a protractor ... temperature 19. 5 HVAC Processes on the Psychrometric Chart Any HVAC process may be plotted on the chart if the end state points are known and sometimes if only the beginning stat...

Ngày tải lên: 15/12/2013, 03:15

... permission from ASHRAE Handbook, 1987 HVAC Systems and Applications; subsequent editions are similar, i.e., 200 1 Fundamentals, Chap 7, Table 11 of the HVAC systems, the HVAC designer is not generally ... equipment Proper acoustical design should eliminate these problems References ASHRAE Handbook, 200 1 Fundamentals, Chap 7, ‘‘Sound and Vibration.’’ ASHRAE Handbook, 1999 HVA...

Ngày tải lên: 15/12/2013, 03:15