Water distribution system handbook (part 3)
Biofilm formation and control in a model drinking water distribution system with phosphorus addition
... formation of microbial aggregates, attachment to surfaces, structural stability and spatial arrangement of biofilm structure and serve as a protective barrier against desiccation and retards access ... Biofilm formation begins with the attachment of free-floating bacterial cells to a surface And this attachment is followed by growth into a mature, structurally complex...
Ngày tải lên: 11/09/2015, 09:17
Detection, formation and reactivity of tetravalent lead corrosion product (pbo2) and its role in water quality in drinking water distribution system
... DETECTION, FORMATION AND REACTIVITY OF TETRAVALENT LEAD CORROSION PRODUCT (PbO2) AND ITS ROLE IN WATER QUALITY IN DRINKING WATER DISTRIBUTION SYSTEM NAME: ZHANG YUANYUAN ... critical role in regulating lead contamination in drinking water, a precise and fast method for its detection is required to determine its abundance in drink...
Ngày tải lên: 30/09/2015, 06:15
Hybrid energy system evaluation in water supply system energy production: neural network approach
... power the system for pumping or turbine the flow between reservoirs, and to sell surplus energy [6] An example of a hybrid energy network, integrated in water supply system is drinking system composed ... of the electricity supply infrastructure [1] The concern with the consumption of energy in water supply systems is increasingly inducing the managers of these sy...
Ngày tải lên: 05/09/2013, 14:58
HVAC Systems Design Handbook part 6
... 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
HVAC Systems Design Handbook part 8
... 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
HVAC Systems Design Handbook part 7
... 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
Datasheet - FO - Optical Distribution System - ODS 500
... Order information V tS sy ste m O rd e r n u m b e r Q ty Fram e 1 -1 pc S id e p a n e l 1 -1 pc B a c k w a ll 1 -1 pc 1 -0 1 -1 pc pc Roof 1 -1 pc Units for VtS system Order number Qty Sub-rack ... 6833 72 5-0 6 pc Cable guide unit complete* 6833 72 0-0 6 pc Cable channel unit 6833 72 8-0 6 pc Storage unit 6833 72 7-0 6 pc Sub-racks for 19" frames Order number...
Ngày tải lên: 22/10/2013, 11:15
HVAC Systems Design Handbook part 9
... 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
HVAC Systems Design Handbook part 10
... 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
Distribution System Project
... session CÁC HỆ THỐNG FILE MẠNG (NFS) NFS hệ thống file mạng phát triển vào cuối năm 1990 SNN Microsystems thêm vào hệ điều hành SNNOS (một phiên UNIX) NFS thiết kế dùng hệ thống file mạng cục NFS ... vụ NFS cách trực tiếp qua Internet mà không cần qua máy trung gian (intermedia servers) SUN Microsystem đưa tiêu chuẩn hướng dẫn sử dụng Protocal cho NFS đặt tiêu chuẩn phạm vi công cộng (RFC-109...
Ngày tải lên: 26/10/2013, 19:15
HVAC Systems Design Handbook part 11
... 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
HVAC Systems Design Handbook part 12
... 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
HVAC Systems Design Handbook part 13
... 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
HVAC Systems Design Handbook part 14
... 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
Tài liệu Spoken english elementary handbook part 1 ppt
... Lot Elementary Handbook Contents i v viii x Contents Introduction Free Copying Licence Bibliography A General Information General Information 1. 1 1. 2 1. 3 1. 6 1. 11 1 .12 1. 13 1. 14 1. 18 1. 22 1. 26 1. 27 ... www.englishbanana.com now! Talk a Lot Elementary © English Banana.com iii Talk a Lot Elementary Handbook Contents 18 .7 18 .9 18 .19 18 .25 18 .29 18 ....
Ngày tải lên: 13/12/2013, 21:15