1 / 19

4.1.2

4.1.2. Determining System Load and Customer Demand Profile .

keiran
Télécharger la présentation

4.1.2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 4.1.2 Determining System Load and Customer Demand Profile Designing a satisfactory gas distribution system for a new customer installation, or modifying an existing installation, requires the propane marketer to understand the operating characteristics and demand of the gas appliances, the customer’s life style and the gas appliance operating profile • In this module you will learn to: • Identify fundamental considerations for designing vapor distribution systems • Determine the customer appliance use profile • Identify possible gas appliance system design problems

  2. Read and comply with company-specific customer installation planning documents such as guidelines for supply container sizing, delivery routing, or standard operating procedures for vapor distribution systems. Fundamentals in Designing Vapor Distribution Systems

  3. Fundamentals in Designing Vapor Distribution Systems • Proper vapor distribution system design must meet two fundamental requirements: • Propane storage containers must supply adequate volumes of fuel gas vapor under the reasonably anticipated operating conditions of the gas appliances. • Pressure regulators and distribution lines must be sized to meet the total gas appliance system load without fuel gas vapor pressure and volumes dropping below appliance manufacturer minimum input specifications with all appliances operating at full load demand.

  4. Fundamentals in Designing Vapor Distribution Systems Figure 1. Components of a Vapor Distribution System and Fundamental Design Considerations

  5. NFPA 54 2002 NFPA Code Requirements Requirements for gas piping system design are located in Chapter 5 of the 2002 edition of NFPA 54, National Fuel Gas Code.

  6. NFPA Code Requirements

  7. Determining the Customer Appliance Use Profile Figure 2a. Example of a Gas Customer Profile (Front)

  8. Determining the Customer Appliance Use Profile Figure 2a. Example of a Gas Customer Profile (Front)

  9. Determining the Customer Appliance Use Profile Figure 2a. Example of a Gas Customer Profile (Front)

  10. Determining the Customer Appliance Use Profile Figure 2b. Example of a Gas Customer Profile (Reverse Side)

  11. Determining the Customer Appliance Use Profile Figure 2b. Example of a Gas Customer Profile (Reverse Side)

  12. Determining the Customer Appliance Use Profile Figure 2b. Example of a Gas Customer Profile (Reverse Side)

  13. Determining the Customer Appliance Use Profile • Special system design requirements may include: • Large gas appliance system demand • Year-round use of both indoor and outdoor gas appliances • Large family and group social functions in severely cold weather • Customer desire for concealed propane supply containers • High-altitude appliance operation • Concealed piping or tubing runs, or kitchen equipment installed in island locations • Critical service factors

  14. Determining the Customer Appliance Use Profile Figure 3a. Example of a Gas Customer Profile (Front)

  15. Determining the Customer Appliance Use Profile Figure 3a. Example of a Gas Customer Profile (Front)

  16. Determining the Customer Appliance Use Profile Figure 3a. Example of a Gas Customer Profile (Front)

  17. Determining the Customer Appliance Use Profile Figure 3b. Example of a Gas Customer Profile (Reverse Side)

  18. Possible Gas Appliance System Design Problems Figure 4. Example of Installation Planning Checklist

  19. Time to See If You Got the Key Points of This Module… • Complete the Review on page 8. • See if you are ready for the Certification Exam by checking off the performance criteria on page 9.

More Related