Thermal energy use for dehumidification of a tomato greenhouse by natural ventilation and a system with an air-to-air heat exchanger
| Autor: | Sven Nimmermark, Katarzyna Maslak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Waste management
business.industry 020209 energy ventilation humidity lcsh:S Greenhouse Natural ventilation 02 engineering and technology Articles lcsh:S1-972 greenhouses lcsh:Agriculture Heat recovery ventilation Thermal energy use Heat exchanger 0202 electrical engineering electronic engineering information engineering Environmental science lcsh:Agriculture (General) business Thermal energy dehumidification rotating heat exchanger Food Science |
| Zdroj: | Agricultural and Food Science, Vol 26, Iss 1 (2017) Agricultural and Food Science |
| ISSN: | 1795-1895 1459-6067 |
| Popis: | The aim of the study was to estimate the amount of thermal energy used for dehumidification of a naturally ventilated tomato greenhouse and to estimate how mechanical ventilation with the use of a heat exchanger recovering heat from the exhaust to the supply air may decrease the energy use. Measured use of thermal energy in a naturally ventilated tomato greenhouse was compared to modelled values using Powersim® software. By the help of the model an estimation of the amount of energy used for dehumidification was made for the months April – September. A non-hygroscopic rotary air-to-air heat exchanger was studied, and its temperature and moisture efficiencies were measured. Modelling for leaf area index (LAI) 3.5 and 4.0 m2 m-2 indicated that 23 and 29% of the total thermal energy was used for moisture removal respectively. Modelling for the heat exchanger indicated thermal energy savings of 15 and 17% for the same LAI respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|