Exportinitiative Energieeffizienz Energiebesparingssystemen voor kassen Christian Kurtsiefer KMA Umwelttechnik GmbH Eduard-Rhein Straße Königswinter, Germany Phone: +49 (0) Internet:

Agenda 1. Introduction 2. The system – winter time 3. The system – summer time 4. Functions in parallel 5. Efficiency 6. Monitoring 7. Examples

Winter well water The carrier medium is heated up to an inlet temperature of +10 to +12 °C The heat pump transforms the heat energy to a usable level between 25 and 45 °C. +10 to +12 °C +25 to +45 °C By means of air convectors, the greenhouse air gets heated up. By means of black collector pipes (solar thermal collector in the pediment of the greenhouse) heat is collected by absorbing sunlight. Floor heating in the flower / vegetable beds ensure a very efficient low-loss heating of the plants. The carrier medium is water or brine (for frost protection) Heat can be provided to low temperature consumers (such as floor heating for homes and office buildings, swimming pools, or air heating systems in production facilities). or water from ground collector If there is the requirement for cooling in the neighborhood (data centre, production process), cold carrier medium can be provided cold mediumhot

Summer a) Natural / Passive Cooling or b) The heat pump transforms the cooling energy to a higher level. By means of air convectors, the heat energy gets removed from the air. well water The carrier medium is reduced to an inlet temperature of +10 to +12 °C +10 to +12 °C By means of black collector pipes (solar thermal collector in the pediment of the greenhouse) heat is collected by absorbing sunlight. To improve carbon footprint: Heat can be provided to low temperature consumers (swimming pools, showers, hot process water). or water from ground collector cold mediumhot Cooling can be provided to external consumers (office building, …). In case of warm days and cold nights: the underground could be used as energy storage.

By switching valves of the heat pump many of the following functions can be used in parallel: - Natural / Passive Cooling (heat pump switched off) - Active Cooling (heat pump in operation) - Transformation of specific heat (heat removed from greenhouse could be used elsewhere) - Heat recovery on external sources / consumers - Highly efficiency air conditioning - Low temperature heat pump (LTHP)

Efficiency: The term coefficient of performance (COP) is used to describe the ratio of useful heat movement to energy input. According to layout data from Bitzer

Monitoring The PLC can be equipped with remote maintenance / diagnosis (teleservice) functions.

Examples 1400 kW heat output capacity 2 x 300 kW heat output capacity7 x 300 kW heat output capacity 800 kW heat output capacity

Thank you for your attention. If you should have any further questions, please don't hesitate to contact me. Christian Kurtsiefer KMA Umwelttechnik GmbH Eduard-Rhein Straße Königswinter, Germany Phone: +49 (0) Internet: