How does BTU convert to heat in degrees in a greenhouse?

  • #1
gary350
253
52
Information online claims sun is 200 btu per sq ft in winter only when sun is perpendicular to plastic or glass of a green house. When sun hits glass or plastic at an angle there are losses. The steeper the angle the more losses will be.

Is it possible to calculate how warm a green house will get in full sun at solar 12 noon.?

Our average day temperature is now about 50 degrees a temperature rise for 25 degrees will make it 75 degrees in a green house tunnel during the day only. It will still get 25 degrees after dark. Winter plants are good down to 0 to -20 degrees but nothing grows below 40 degrees.

If I can prove on paper this will work then i will build it.
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  • #2
Why not build a test model with some sort of thermometer inside that can be read visually from the outside?

One thing to be aware of is snow or cloud cover may further reduce its effectiveness.

In Texas, we would cover our plants with plankets. However where the plant leaves touched the planket we would see the effects of frost.
 

Related to How does BTU convert to heat in degrees in a greenhouse?

1. How does BTU convert to heat in degrees in a greenhouse?

BTU, or British Thermal Units, is a unit of measurement used to quantify the amount of heat energy required to raise the temperature of one pound of water by one degree Fahrenheit. In a greenhouse setting, BTUs are used to measure the amount of heat energy needed to maintain a specific temperature within the structure. By calculating the BTU requirements based on factors such as greenhouse size, insulation, and outside temperature, you can determine the amount of heat needed to maintain the desired temperature.

2. What is the relationship between BTU and temperature in a greenhouse?

The relationship between BTU and temperature in a greenhouse is direct. As the temperature drops outside, the greenhouse will lose heat to the surrounding environment. To maintain the desired temperature inside the greenhouse, additional heat in the form of BTUs must be added. By calculating the BTU requirements based on the greenhouse's specific conditions, you can ensure that the temperature is maintained at the desired level.

3. How can I calculate the BTU requirements for my greenhouse?

To calculate the BTU requirements for your greenhouse, you will need to consider several factors, including the size of the greenhouse, the desired temperature, the outside temperature, the insulation level, and any heat sources or equipment present. By using a BTU calculator or formula that takes these factors into account, you can determine the amount of heat energy needed to maintain the desired temperature in your greenhouse.

4. What are some common sources of heat that can be used to convert BTUs in a greenhouse?

Common sources of heat that can be used to convert BTUs in a greenhouse include electric heaters, gas heaters, wood stoves, geothermal systems, and solar panels. Each of these heat sources has its own advantages and disadvantages in terms of cost, efficiency, and environmental impact. By selecting the most appropriate heat source for your greenhouse based on factors such as availability, cost, and energy efficiency, you can ensure that your greenhouse remains at the desired temperature.

5. How can I monitor and control the conversion of BTUs to heat in my greenhouse?

To monitor and control the conversion of BTUs to heat in your greenhouse, you can use a variety of tools and technologies, such as thermostats, temperature sensors, and automation systems. These devices can help you track the temperature inside the greenhouse, adjust the heat source as needed, and ensure that the desired temperature is maintained. By regularly monitoring and controlling the conversion of BTUs to heat in your greenhouse, you can create an optimal environment for your plants to thrive.

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