1 / 23

PE 013 Refrigerant based dehumidification

PE 013 Refrigerant based dehumidification. How do they work?. They’re just a decent size refrigeration unit. Evaporator. Condenser. Warm, wet air. Warm dry air. Cold air. 20 o C 85% RH 15g/m 3 of water. 16 o C 100% RH 14g/m 3 of water. 30 o C 45% RH 14g/m 3 of water. Compressor.

diem
Download Presentation

PE 013 Refrigerant based dehumidification

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. PE 013Refrigerant based dehumidification

  2. How do they work? They’re just a decent size refrigeration unit Evaporator Condenser Warm, wet air Warm dry air Cold air 20oC 85% RH 15g/m3 of water 16oC 100% RH 14g/m3 of water 30oC 45% RH 14g/m3 of water Compressor Water

  3. The energy balance Evaporator Condenser Warm, wet air Cold, wet air Warm dry air 4kWh Compressor Water 1kWh 3kWh

  4. Simple energy costs • But there’s more….

  5. A bit more physics • What happens when the vents are open? • Lose the energy in the water vapour (latent heat) • Lose the energy in 20oC air that is replaced with say 10oC air (specific heat) • This adds 1 to the CoP • New CoP is 5.0

  6. The project at Red Roofs Nursery • 4 dehumidifiers in 6,000m2 • Each unit • Consumes 10kW electricity • Removes 45 litres/hr of water

  7. Energy facts/figures • 2013

  8. Energy facts/figures • 2014

  9. Energy facts/figures • Total heat use - 2013

  10. Energy facts/figures • Total heat use - 2014

  11. Energy facts/figures • Heat saved

  12. Energy facts/figures • Electricity used

  13. Crop data • 2013

  14. Control Dehumidifier

  15. Crop data • 2014

  16. Control Dehumidifier

  17. Financials • Check out the spreadsheet

More Related