Investigation Of The Effectiveness Of The Fan-Pad Cooling System And The Horizontal Temperature And Relative Humidity Changes In The Greenhouse

Abstract

This study was conducted to investigate the effectiveness of the fan-pad cooling system and the temperature and relative humidity changes throughout the horizontal distance in the greenhouse. For this purpose, a total of 6 temperature and relative humidity sensors are installed inside and outside of the greenhouse. In the study, it was determined that the system efficiency was the highest when the external relative humidity is the lowest. When the highest outside temperature measured during the day is considered, the outside temperature at 14:00 was 34.98 degrees C, while the average internal temperature values in the greenhouse cooled by fan-pad reached to 26.37 degrees C. The internal temperature in the greenhouse at that hour was found to be 8.61 degrees C lower than the outside temperature. When the sensor positions are considered, the inside-outside temperature difference measured in front of the pad was 12.27 degrees C and the cooling effect measured in front of the pad at that hour was 84.60%, while these values in front of the fan were measured as 8.10 degrees C - 55.85%, respectively. The average temperature increase from the pad to the fan was 5.90 degrees C and the relative humidity difference was by 16% between the cooling hours of 08:00-19:00. In the statistical analyses performed, it was determined that the temperature-dependent relative humidity difference along the horizontal distance is significantly different from the pad to fan (p<0.01).