Humidity-Based Sensory Temperature Control for Greenhouse Ventilation
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Solution Overview
Problem
Conventional vinyl houses and stables face challenges in maintaining optimal temperature and humidity levels, leading to issues such as uneven temperature distribution, moisture evaporation, and increased risk of disease and insect damage due to inadequate ventilation and heating methods that prioritize temperature over humidity.
Innovation Solution
A system incorporating multiple variable fans, thermometers, and hygrometers for precise control of temperature and humidity, where the control unit adjusts fan operation based on detected humidity and temperature values to maintain optimal sensible temperature, minimizing damage from disease and insects and improving productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heating devices are operated to increase internal temperature in winter, then temperature is improved, but temperature distribution becomes uneven and moisture evaporation increases
Solution Approach 1:
The patent divides the heating function into multiple heating devices distributed throughout the vinyl house rather than using a single centralized heater. This segmentation allows heat to be generated at multiple locations, creating more uniform temperature distribution and reducing localized overheating that causes moisture evaporation.
Solution Approach 2:
The patent implements local temperature control by positioning heating devices and ventilation openings at specific locations throughout the structure. Each region can be independently optimized for its thermal requirements, with heating elements placed in colder zones and ventilation adjusted locally to prevent moisture accumulation and evaporation.
2Ease of operation
If ventilation is increased to improve air circulation, then temperature control is improved, but heat loss increases in winter
Solution Approach 1:
The patent employs periodic or conditional ventilation rather than continuous operation. Ventilation openings are opened only when temperature thresholds are exceeded or humidity requires control, and closed during cold periods to retain heat. This periodic action maintains air circulation when needed while minimizing unnecessary heat loss.
Solution Approach 2:
The patent uses temperature and humidity sensors to provide feedback to the control system, which automatically adjusts ventilation opening positions and sizes based on real-time environmental conditions. This feedback mechanism ensures ventilation occurs only when necessary for temperature or humidity control, preventing excessive heat loss during winter months.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides a humidity-considered sensible temperature, reducing damage from disease and insects, and enhancing productivity by maintaining optimal conditions for plants and livestock through precise temperature and humidity control, reducing energy loss and stress on livestock.
Implementation Method 1
a variable fan formed of a motor and allows external air input to internal... if the detected temperature (A′) is higher than the appropriate temperature (A′′), the variable fan operates, and external air is inputted, thus lowering the internal temperature
Implementation Method 2
a thermometer and a hydrometer for measuring internal temperature and humidity
Implementation Method 3
a thermometer and a hydrometer for measuring internal temperature and humidity
Data Source
AI summary
The present invention can provide an optimum sensory temperature and can increase productivity by a system having a variable fan provided in a vinyl greenhouse, receiving optimum temperature (A) and humidity (B), detecting internal temperature (A′) and humidity (B′), calculating temperature (A″) according to the humidity, and providing the temperature (A″) suitable for the humidity (B′) detected through an operational control of the variable fan.