Very Important Some Valuable
Technical Information on Roses
CELdek®
System Makes for
Cool Solution in Spain
Background
The Spanish companies of Roses EligFlor - Elig-Flor Castalla
and Rosas Campello Obiol form a corporate group that has as
its business the production of high-quality roses. The two member
companies have production sites situated at Elche and at Castalla
in Alicante city.
The group companies, as a whole, are firmly established
in the Spanish market with a combined production reaching
nine million roses a year. This makes the group one of the
most important rose suppliers in Spain.
The total production of Elig-Flor is sold throughout the
domestic market via the group's own retail stores in the major
cities of Spain (Madrid, Valencia, etc.). All the roses arc
produced on nine hectares of land inside modern greenhouses
having solid frames and employing a rigid plastic multitunnel
system. The total number of employees within the group adds
up to approximately 60 people.
Hot Problem
 During
the summer season (i.e. June, July, and August), this region
of Spain may have temperatures hovering as high as 40 °C
outside the greenhouses. Such high temperatures directly and
adversely affect production, thereby reducing the quality
of the roses.
High house temperatures influence the plant performance
negatively, and the resultant appearance of the roses tends
to reduce the market price. The end result being lower profits
during these summer months for the farmer.
Cool Solution
According to Rafael Obiol (General Manager, Elig Flor),
Everybody in this business knows the benefits of a cooling
system, but only the people who want to invest in quality
actually end up installing it. By reducing the temperature
in the greenhouses during the summer season, we are able to
bring about an optimal growing process for the rose, thus
obtaining the best product quality and appearance for the
market. A good image of the product is very important, even
as regards rose color and endurance, in order to obtain buyer
satisfaction. With this system, which was designed in a cooperative
project between Munters and Elig-Flor, the Group has been
able to
- reduce the temperature inside the greenhouse by 6 °C
- increase the relative humidity to 72%. ('This helps to
dramatically cut water evaporation from the roses as they
grow)
- retain high quality and appearance
- guarantee maximum profit.
An important point of influence is the shadow mesh installed
inside the Group's greenhouses, because this cuts out 60%
of the solar radiation. Owing to this fact, the overall design
was adjusted in consultation with Munters to match the optimal
conditions using such a shadow mesh.
How Munters Does It
 The
essence of CELdek® system
is to provide comprehensive control, from start to finish.
This begins with Munters expertise to choose the right equipment
and goes on to include all the technical support necessary
for a total turnkey solution. The specially designed control
system, for example, is a principal part of the CELdek®
system. In general, it includes CELdek®
evaporative cooling pads, selected Euroemme™
fans, control system, and all necessary water-distribution
equipment, and in some climates, heating systems. Munters
has many years of farranging global experience in providing
the right climate in the right place at the right price.
Installation Calculation
The installation in Elig-Flor's greenhouses was calculated
using on-site data, which included the amount of solar radiation
falling on the greenhouse and the surface of the greenhouse.
 As
a result - for a greenhouse measuring 40 by 1200 meters this
led to an installation of 120 meters of CELdek®
evaporative cooling pads, having a height of two meters and
a thickness of 100 millimeters, inclusive of a gutter system.
Also included in the installation design were a total of 28
EM50 fans of I hp each.
Furthermore, 36 EDC24
units were installed in the greenhouses to prevent air stratification
during the winter season. The purpose of this was to boost
the expulsion of moist air and thus avoid the formation of
dew on walls and ceilings.
Case Study
By installing the CELdek®
system the Elig-Flor Group has been able to:
- Reduce the temperature inside the greenhouse by 6 °C
- Increase the relative humidity to 72%. (This helps to
dramatically cut water evaporation from the roses as they
grow.)
- Retain high quality and appearance
- Guarantee maximum profit
- Improve the control of the house environment, and limit
the temperature and humidity extremes
|
