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NOTE: Requirement for Thursday

NOTE: Requirement for Thursday . Email me: Final project group members Project title One paragraph (200-300 words) including - Project objective Methodology Expected results Any schematic drawing is welcome Thursday afternoon long office hours to discuss your project .

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NOTE: Requirement for Thursday

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  1. NOTE: Requirement for Thursday Email me: • Final project group members • Project title • One paragraph (200-300 words) including - Project objective • Methodology • Expected results Any schematic drawing is welcome Thursday afternoon long office hours to discuss your project

  2. Lecture Objectives: • Learn more about eQUEST • Questions related to project 1 • Discuss the final project assignment • Introduce PSP and other building for envelope analysis • Learn more about various HVAC

  3. Example orientation East- west orientation Part a) Part b) • Project I data N W E S N W E S

  4. eQUEST • Example of • Defining envelope and internal loads • Selecting HVAC system • Presenting results • Finding design cooling and heating loads • Extracting simulation detail

  5. eQUEST HVAC Models • Predefined configuration (no change) • Divided according to the cooling and heating sources • Details in e quest help file: For example: DX CoilsNo Heating • Packaged Single Zone DX (no heating) • Packaged single zone air conditioner with no heating capacity, typically with ductwork. • Split System Single Zone DX (no heating) • Central single zone air conditioner with no heating, typically with ductwork. System has indoor fan and cooling coil and remote compressor/condensing unit. • Packaged Terminal AC (no heating) • Packaged terminal air conditioning unit with no heating and no ductwork. Unit may be window or through-wall mounted. • Packaged VAV (no heating) DX CoilsFurnace • Packaged direct expansion cooling system with no heating capacity. System includes a variable volume, single duct fan/distribution system serving multiple zones each with it's own thermostatic control. • Packaged Single Zone DX with Furnace • Central packaged single zone air conditioner with combustion furnace, typically with ductwork. • Split System Single Zone DX with Furnace • Central single zone air conditioner with combustion furnace, typically with ductwork. System has indoor fan and cooling coil and remote compressor/condensing unit. • Packaged Multizone with Furnace • Packaged direct expansion cooling system with combustion furnace. System includes a constant volume fan/distribution system serving multiple zones, each with its own thermostat. Warm and cold air are mixed for each zone to meet thermostat control requirements.

  6. Primary and Secondary Building Systems Distribution systems Fresh air For ventilation AHU Primary (Plant) systems Air transport Electricity Secondary (HVAC) systems Cooling (chiller) Heating (boilers) ECJ building Gas (or Gas) AHU – Air Handling Unit

  7. Processes in AHU fresh air damper filter cooling coil heating coil filter steam humidifier fan mixing Building

  8. Economizer Controlled devices are damper fresh air damper mixing recirc. air T & RH sensors

  9. Economizer Fresh air volume flow rate control % fresh air 100% enthalpy Fresh (outdoor) air TOA (hOA) Minimum for ventilation damper mixing Recirc. air T & RH sensors

  10. Building Envelope analysis 1) Optimization of building envelops glass area ,shading,…. 2) Effect of internal loads on energy consumption 3) Design (Size) the hot water (solar) system 4) ….. ……… n) Size the solar collectors (production system) to make a building net zero energy.

  11. Envelope and thermal mass analysis • Focus on large commercial buildings • Glass area and glass properties • Ratio between glass and concrete • …. • …. • - Life cycle const analysis

  12. Solar hot water system

  13. Water Cooled Chiller Chiller Cooling tower Building Water 120°F Water 52°F Outside air 95°F Water 100°F Inside 75°F Water 42°F Task: analyze COP for the whole year and different locations

  14. Small and large thermal storage systems(in combination with a cooling machine / heat pump) Winter Summer In the summer, the earth acts as a cooling tower. The Cooling Machine loads the loop with heat, sending warmed water to be cooled by the earth In the winter, the earth acts as the boiler. The Heat Pump extracts heat from the loop, sending cooled water to be warmed by the earth.

  15. More final project topics: Software (eQUEST) based • Energy analysis of building form Integrated design course, • Any other building or building system Detail Modeling (your model) • Heat recovery systems, • Attic problem, • Mass transfer (moisture,…) • Vented cavity walls - exam problem Your ideas…

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