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Collaborative project: Development of latent heat storage and thermal systems for the efficient use of solar energy under glass and plastic film – Subproject 3
Project
Project code: 2815100506
Contract period: 15.11.2007
- 14.11.2011
Budget: 153,321 Euro
Purpose of research: Experimental development
The use of excess heat from greenhouses with phase change materials reduces the amount of primary energy of greenhouse heating for ornamental plant production by 10 to 20%.This effect is increased by the use of intelligent climate control systems. The change of phase must happen within the temperature range accepted by the grown plants (10 to 25 °C). A minimum temperature difference between air and PCM of 4K for charging and discharging is required. The most efficient material was paraffine RT18HC. It turned out that most bed- and balcony plants tolerate alternating temperatures (night 10 °C; day 25 °C). High temperatures should be limited to a few hours per day in order not to increase the amount of growth inhibitors needed. Euphorbia pulcherima was more sensitive to low temperatures especially during induction period. There were promising results also with other potted and greening plants.
Section overview
Subjects
- Horticulture
- Climate Change
Framework programme
Funding programme
Excutive institution
Faculty of landscape architecture, horticulture and forestry
Funding institution
Project management agencies
Associated projects: Development of latent heat storage and thermal systems for the efficient use of solar energy under glass and plastic film
- Collaborative project: Development of latent heat storage and thermal systems for the efficient use of solar energy under glass and plastic film – Subproject 1
- Collaborative project: Development of latent heat storage and thermal systems for the efficient use of solar energy under glass and plastic film – Subproject 2