1 / 16

RETScreen ® Heating and Cooling Projects

Water-cooled chiller. RETScreen ® Heating and Cooling Projects. Insulated Pipes for District Heating. Photo : Wikipedia. Photo : Wikipedia. Absorption chiller. Solar water heating, apartment in Uganda. District heating for the city of Copenhagen.

tamma
Download Presentation

RETScreen ® Heating and Cooling Projects

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. Water-cooled chiller RETScreen® Heating and Cooling Projects Insulated Pipes for District Heating Photo : Wikipedia Photo : Wikipedia

  2. Absorption chiller Solar water heating, apartment in Uganda District heating for the cityof Copenhagen Overview of Heating and Cooling Projects Photo: Sanyo Electric Co. Photo: Solar Construct Ltd. Ground-source heat pump, single-family home Photo: Reynaers/Greenpeace

  3. Heating Technologies • Boiler • Furnace • Thermal fluid heater • Heating with biomass • Heat pump • Waste heat recovery unit • Solar water heater • Solar air heater

  4. Vapour Compression Cooling Free Cooling Cooling Technologies Requiring a source of power: • Heat pump • Compressor Requiring cool weather: • Free cooling

  5. Cooling Technologies (cont.) Requiring a source of heat: • Desiccant • Absorption Absorption Cooling Desiccant Cooling

  6. Coal being transported, Ohio, USA Types of Fuels Heat from: • Fossil Fuels (Coal, Diesel, Natural Gas, Propane, Gasoline, Oil, etc.) • Biomass • Waste (tires, landfill gas, etc.) • Renewable “fuels” like solar and geothermal energy • Electricity Photo : Wikipedia A heating load or dessicant/absorption cooling load can use these fuels directly, or use waste heat from apower project utilizing these fuels

  7. Electric heating Fire-tube boiler HRSG Base, Intermediate, and Peak Load Systems Photo: Air & Water, Inc Photo: FireCAD Technologies Photo: Babcock-Hitachi K.K.

  8. Equipment Sizing • Base load system • Operates at or near capacity most of the time • Supplies majority of heating/cooling • Lowest operational costs • Equipment typically expensive • Peak load system • Operates only during times of peak demand • Supplies small fraction of heating/cooling • May have high operational costs • Equipment generally less expensive • Intermediate load system • Between base and peak load system On the Energy Model sheet:

  9. Heating and Cooling Projects with RETScreen Steps: • Define Loads (Heating, cooling and power) + heating/cooling degree days for space heating/cooling • Base case characteristics + costs (heating, cooling) • Proposed case characteristics + costs (heating, cooling) • Operating Strategy • Summary (energy) • Emission analysis • Financial analysis

  10. Types of Analyses Project Types: • Heating • Cooling • Combined Heatingand Cooling

  11. Heating load Cooling load Load Characteristics Heating and Cooling Loads • Space heating/cooling • Process heating/cooling • Combination space+process • Spatially-distributed loads: • Single building • Single building with multiple zones • Multiple buildings Base case vs Proposed case

  12. Important Parameters Heating System • Seasonal efficiency Cooling System • Coefficient of Performance-seasonal Power system providing waste heat (see CHP course) • Heat rate • Heat recovery efficiency Eff. = 55 % 100 GJ 55 GJ COP = 3.0 100 MWh 300 MWh

  13. Emission & Financial Analysis Method 2 Method 1

  14. Example 1: Heating or Cooling Project database (Case Studies):Heating – Boiler – Canada– Vancouver – Office • Simplified model • Compare medium andhigh efficiency boiler • Compare natural gas and oil Project database (Case Studies):Cooling – Compressor – USA– Madison – Arena • Compare medium and high COP • Compare compressor withabsorption cooling

  15. Example 2: Heating & Cooling Project Type: Cooling ⇒ Combined Heating & Cooling • Load & Network sheet appears • In Energy Model Sheet: Cooling system ⇒ Absorption • Now the fuel source is the heating system • Base Load System ⇒ Base + Intermediate + Peak Load System • Biomass as a low-cost source of heat

  16. Questions? www.RETScreen.net

More Related