1 / 23

Advanced Plumbing and HVAC Systems: Design, Control, and Optimization

This course focuses on the objectives of understanding and optimizing plumbing and HVAC systems. Participants will learn about duct systems, hydronic terms, head loss, loop types, and the driving forces behind air and water movement in buildings. The curriculum includes discussions on centrifugal pump curves, net positive suction head, and the design and research of plumbing arrangements. Additionally, the course covers advanced control logic for HVAC systems, ventilation requirements, and the application of economizers, aiming at energy efficiency and optimal performance in building systems.

albina
Télécharger la présentation

Advanced Plumbing and HVAC Systems: Design, Control, and Optimization

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. Objectives • Finish duct systems • Learn about plumbing systems • Discuss your question relate to HW4 • Introduce some project topics

  2. Hydronic Terms • Head loss • Open-loop vs. closed loop

  3. Head Loss

  4. Fittings

  5. Pumps • Driving force to move air water in buildings • Raise pressure and produce flow • One main type • Centrifugal

  6. Pump curves • NPSHR = Net Positive Suction Head Required

  7. Plumbing Arrangements

  8. Project • Design problem • …. • Research problem • ….

  9. Couple chiller and cooling tower Cooling tower TCTS TCTR Weather parameters P - Find COP for several weather condition • Use nonlinear equation solution methods TCWS TCWR Q

  10. HVAC Control Economizer (fresh air volume flow rate control) fresh air damper filter cooling coil heating coil filter steam humidifier fan mixing

  11. Mixture 3 DPTSP Set Point (SP) Mixture 2 Mixture 1 DBTSP Sequence of operation(ECJ research facility) Control logic: Mixture in zone 1: IF (( TM<TSP) & (DPTM<DPTSP) ) heating and humidifying Heater control: IF (TSP>TSA) increase heating or IF (TSP<TSA) decrease heating Humidifier: IF (DPTSP>DPTSA) increase humidifying or IF (DPTSP<DPTSA) decrease humid. Mixture in zone 2: IF ((TM>TSP) & (DPTM<DPTSP) ) cooling and humidifying Cool. coil cont.: IF (TSP<TSA) increase cooling or IF (TSP>TSA) decrease cooling Humidifier: IF (DPTSP>DPTSA) increase humidifying or IF (DPTSP<DPTSA) decrease hum. Mixture in zone 3: IF ((DPTM>DPTSP) ) cooling/dehumidifying and reheatin Cool. coil cont.: IF (DPTSP>DPTSA) increase cooling or IF (DPTSP<DPTSA) decrease cooling Heater control: IF (TSP>TSA) increase heating or IF (TSP<TSA) decrease heating

  12. Fan Biomedical Engineering (BME) Building Duct Optimization Ducts Supply Return In-Take air Exhaust

  13. Life Cycle Cost Analysis • Engineering economics Option A Option B

  14. Enthalpy wheel

  15. VAV Example • One system • Multiple Spaces/Zones - VAV box for each space/zone • http://www.trane.com/commercial/library/vol242/v24b6.asp

  16. VAV System Terms & Equations(you can find them in ASHRAE Standard 62) • Fraction of minimum outdoor air in space/zone supply air Xi = VOAi / VSAi • Critical space Space with maximumXi , Z=max(Xi) • Fraction of outdoor air in system supply air X = sum(VOA ) / sum(VSA) • Required Fraction of outdoor air: Y=X/(1+X-Z)

  17. Example Solution

  18. Other Issues Related to VAV • Fan control • Minimum supply air • Occupancy sensors

  19. DOAS System • www.doas.psu.edu

More Related