Pe 013 refrigerant based dehumidification
This presentation is the property of its rightful owner.
Sponsored Links
1 / 23

PE 013 Refrigerant based dehumidification PowerPoint PPT Presentation


  • 108 Views
  • Uploaded on
  • Presentation posted in: General

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.

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


PE 013Refrigerant based dehumidification


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


The energy balance

Evaporator

Condenser

Warm, wet air

Cold, wet air

Warm dry air

4kWh

Compressor

Water

1kWh

3kWh


Simple energy costs

  • But there’s more….


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


The project at Red Roofs Nursery

  • 4 dehumidifiers in 6,000m2

  • Each unit

    • Consumes 10kW electricity

    • Removes 45 litres/hr of water


Energy facts/figures

  • 2013


Energy facts/figures

  • 2014


Energy facts/figures

  • Total heat use - 2013


Energy facts/figures

  • Total heat use - 2014


Energy facts/figures

  • Heat saved


Energy facts/figures

  • Electricity used


Crop data

  • 2013


Control

Dehumidifier


Crop data

  • 2014


Control

Dehumidifier


Financials

  • Check out the spreadsheet


  • Login