Pe 013 refrigerant based dehumidification
Download
1 / 23

PE 013 Refrigerant based dehumidification - PowerPoint PPT Presentation


  • 141 Views
  • Uploaded on

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.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' PE 013 Refrigerant based dehumidification' - diem


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 013 refrigerant based dehumidification

PE 013Refrigerant based dehumidification


How do they work
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
The energy balance

Evaporator

Condenser

Warm, wet air

Cold, wet air

Warm dry air

4kWh

Compressor

Water

1kWh

3kWh


Simple energy costs
Simple energy costs

  • But there’s more….


A bit more physics
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
The project at Red Roofs Nursery

  • 4 dehumidifiers in 6,000m2

  • Each unit

    • Consumes 10kW electricity

    • Removes 45 litres/hr of water




Energy facts figures2
Energy facts/figures

  • Total heat use - 2013


Energy facts figures3
Energy facts/figures

  • Total heat use - 2014



Energy facts figures5
Energy facts/figures

  • Electricity used


Crop data
Crop data

  • 2013


Control

Dehumidifier


Crop data1
Crop data

  • 2014


Control

Dehumidifier


Financials
Financials

  • Check out the spreadsheet


ad