Transcript Plant Research International – Greenhouse Technology

Greening The Living Rainforest
Feije de Zwart
Wageningen UR Greenhouse Horticulture
Buildings of The Living Rainforest
760 m²
Amazonica
1050 m² greenhouse
600 m² other buildings
240 m²
Lowlands
50 m²
propagation
Simulated energy consumption of TLR 2006
Liter oil equivalent per day
liter oil equivalents per day
450
400
350
300
250
200
150
100
50
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Simulated energy consumption of TLR 2006
Liter oil
kg woodchip (30% moisture) per day
liter oil and kg Woodchip per day
350
14001400
300
12001200
250
10001000
200
800 800
150
600 600
100
400 400
50
200
0
0
200
0
woodchip
250 ton/year
3500 liter/year
oil
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Simulated energy consumption of TLR 2006
Liter oil
kg woodchip (30% moisture) per day
liter oil and kg Woodchip per day
350
14001400
300
12001200
250
10001000
200
800 800
150
600 600
100
400 400
50
200
0
0
200
0
woodchip
250 ton/year
3500 liter/year
oil
Jan
Feb
Mar
Apr
40 times a year
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Proposed refurbisment TLR
800 m²
Amazonica
1200 m² new energy friendly
greenhouse
650 m² other buildings
400 m²
Lowland
120 m²
Office
s
Energy consumption of complete refurbished TLR
Oil equivalents [liter/day]
450
400
20% more greenhouse,
10% more office surface
350
300
60% reduction of energy
use
105 tonnes woodchip per year
250
200
150
100
50
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Heat demand versus heat surplus
winter
summer
Heat demand and heat surplus
Oil equivalents [liter/day]
200
150
100
50
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Two problems:

How to extract the heat from the surplus

How to apply the extracted heat
(seasonal asynchrony and low
temperature)
Loading the VSHE
24 °C
22 °C
28 °C
10
12
16 20 24 20 16
12
10
Applying stored heat
30 °C
25 °C
2 °C
22 °C
0 °C
11 6
2
6
11 16 18 16
12
10
Applying stored heat
1 unit electricity
4 units heat
COP = 4
3 units from VSHE
More than half of the heat comes from heat pump
Oil equivalents [liter/day]
200
44% from wood chips
56% from heat pump
150
50 tonnes woodchip
60 MWh electricity
100
50
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Heat pump, heat capture and VSHE
Saving:
55 tonnes
woodchip
per year
First only a small renovation
Amazonica
Lowlands
propagation
First only a small renovation
760 m²
Amazonica
240 m²
Lowland
200 m²
new grnh
1000 m² old, very energy inefficient greenhouses
200 m² new, energy friendly greenhouse
650 m² other buildings
120 m²
Office
s
Thank you for
your attention