Design your energy efficient greenhouse and model your inner climate

About Hortinergy

Design your energy efficient greenhouse with Hortinergy

  • With the Hortinergy online software you can simulate innovative and optimal configurations to reduce your horticultural greenhouse energy consumption (renovation or new project).
  • Calculate the greenhouse energy consumption and expenditure.
  • Model the inner climate (temperature, humidity).
  • Modelling includes specific greenhouse energy efficiency and climate control parameters: composition of the covering, equipment, heating system, canopy, desired internal climate, external climate, etc.
  • Hortinergy integrates modern technologies such as semi-closed greenhouses, active ventilation, etc.
greenhouse energy consumption and climate modelling with Hortinergy
Possible results
  • Greenhouse energy consumption for heating, dehumidification and cooling on an hourly, daily, monthly and yearly basis
  • Inner climate modelling (temperature, humidity) on an hourly basis
  • Consumption of the primary and secondary heating system and heat load-duration curve
  • Equipment sizing
  • Comparison of the solutions (annual, monthly basis)
Possible inputs data
  • GPS coordinates of the greenhouse for the weather file
  • Greenhouse covering with dimensions, materials and screens
  • Desired internal climate control (temperature, humidity, water deficit)
  • Type of culture
  • Type of greenhouse (standard, semi-closed, active ventilation)
  • Heating equipment
  • Greenhouse energy production and storage equipment
  • Control system (day/night, screen, temperature integration, open buffer, etc.)
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Method and reliability

The climate modelling and greenhouse energy efficiency calculations have been performed using proven algorithms. The 10% accuracy has been validated through measurement campaigns carried out at French Interprofessional Technical Centre for Fruit and Vegetables (CTIFL); Institute of Horticulture Technology (RATHO/ASTREDHOR) and Wageningen University (WUR) in Mediterranean, ocean and semi-continental climates in conventional and semi-closed greenhouses.

 

Hortinergy was developed by Agrithermic in partnership with the CTIFL (French Interprofessional Technical Centre for Fruit and Vegetables) and RATHO/ASTREDHOR (Institute of Horticulture Technology), the Agro-Campus Ouest University and the Center for Professional Training and Agricultural Promotion (CFPPA) in La Cote Saint André.

General method
Design energy efficient greenhouse and model climate with Hortinergy
Different steps

Due to the complexity of the algorithms in climate modelling and greenhouse energy consumption, it takes approximately 1 hours for our servers to calculate the energy efficiency and sends the reports.

Greenhouse energy horticultural greenhouse
Functionalities and parameters taken into account

Weather file

Annual record on an hourly basis prepared based on the GPS coordinates with Meteonorm.

  • Temperature
  • Relative humidity
  • Solar radiation (global, diffuse, normal, PAR)
  • Cloudiness
  • Sky temperature
  • Wind speed and direction

Greenhouse covering

Most of classic, innovative and energy effcient greenhouse covering material are included.

  • Orientation and dimensions
  • Shape of the greenhouse: glass, Gothic arch, multi-span plastic
  • Roof and wall materials
  • Airtightness
  • Screen for each wall (quantity, characteristics)
  • Summer whitening (period, characteristics)

Techniques involved

The crop library includes most of the crops

  • Type of culture
  • Type of growing medium
  • Planting and harvesting dates

Heating equipment

Most of greenhouse energy efficient heating aquipment can be modelled

  • Rail pipes
  • Grow pipes
  • Air unit heaters
  • Perimeter heating
  • Low temperature pipe under bench
  • Overhead heating pipes
  • Pulsed-air generator

Heat production and storage

Most of heat production and storage can be modelled to improve greenhouse energy efficiency.

  • Type of energy source
  • Primary production: type and characteristics (maximum and minimum power, condenser, etc.
  • Secondary production / back-up: type and characteristics (maximum and minimum power, condenser, etc.)
  • Storage tank

Climate control and regulation

Climate setpoints are similar as those of a climate computer to model inner climate and optimise greenhouse energy consumption.

  • Temperature: day/night at different periods of the year and morning revival
  • Relative humidity control: RH or humidity deficit
  • Screen: depending on the sunlight (thermal/shading) or internal/external temperature difference
  • Open buffer: Water DT, CO2 production (Minimum solar radiation, required CO2 level), optimisation of the primary system (minimum power), etc.

Semi-closed greenhouse

Hortinergy can model semi-closed greenhouse, closed greenhouse, pad & fan, fog systems etc… to optimise greenhouse energy consumption and inner climate.

  • Semi-closed greenhouse
  • Air revival maximum rate
  • Air internal recirculation rate
  • Fan specification
  • Cooling system (pas, fog)
  • Pad specification
  • Cooling temperature
  • Vent opening temperature

Assimilation light

Assimilation light calculations are included to design energy efficient greenhouse.

  • Type of light (LED, HPS)
  • Maximum power required
  • Lighting efficiency
  • Lighting regulation (DLI, hour)

Greenhouse gas emission

Greenhouse gas emission calculation (g CO2/m² or CO2 / kg product) are required to design energy efficient greenhouse.

  • Nutriments
  • CO2 injection
  • Embodied energy of the greenhouse structure
  • Heating
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What happens to my data ?

You are the owner of your data in all circumstances. We only use your data to design your energy efficient greenhouse and model your inner climate. They are not communicated to third parties or reused in our calculations or for any other purpose.

Your data are conserved on a secure server for 1 year. You keep your hand on it: if you ask for it we can delete all your data anytime.