Climate control system and method for a greenhouse

a greenhouse and climate control technology, applied in the field of greenhouses with a controlled climate, can solve the problems of insufficient evaporative cooling effect, difficult to maintain an elevated cosub>2 /sub>concentration, and attenuating any benefi

Active Publication Date: 2015-10-08
TROPOS TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]In addition to the fan and coil units, with their heating/cooling coils, the greenhouse may be provided with a heated pipe system in areas that are designed for vine type products. This system may circulate hot (e.g. 180° F.) water through pipes. Solenoid...

Problems solved by technology

Thus, in hot humid climates, the evaporative cooling effect is typically insufficient to maintain a greenhouse at a temperature favorable to plant growth.
In greenhouses with fan and pad evaporative cooling system...

Method used

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  • Climate control system and method for a greenhouse
  • Climate control system and method for a greenhouse
  • Climate control system and method for a greenhouse

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Embodiment Construction

[0031]A climate control system for a greenhouse according to principles of the invention provides electricity, water, heating, cooling, dehumidification and CO2 enriched air to the interior of a greenhouse for purposes of facilitating plant growth. With reference to the high level block diagram of FIG. 1, the system is comprised of a number of operably coupled subsystems that supply the aforementioned utilities and provide the functionality. The greenhouse 125 is substantially closed, excepting screened vents, and positively pressured to prevent intrusion by contaminants, pests and ambient air, it is not suitable for fan and pad evaporative cooling which requires an open path for rapid airflow to facilitate evaporative cooling. The subsystems include one or more generator subsystems 100 which simultaneously produce electricity for lighting and / or sale to a local grid, hot water for heating, and CO2 for enhanced photosynthesis. Nox from the generator exhaust is removed by reaction wi...

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Abstract

A greenhouse environment control system generates a CO2-enriched air which is supplied to a greenhouse at a controlled temperature suitable for plant growth. An absorption chiller reduces temperature of a CO2-containing stream of processed gasses from an engine. A mixing and blending unit maintains CO2 at an acceptable concentration for enhanced plant growth and human occupation. An HVAC system modulates temperature and positively pressurizes the greenhouse with the CO2-enriched air to reduce risk of contaminant intrusion. Misting further controls temperature. Retractable shades regulate light supplied to plants and solar gain.

Description

FIELD OF THE INVENTION[0001]This invention relates generally to horticulture, and, more particularly, to a greenhouse with a controlled climate, including temperature, humidity and carbon dioxide concentration.BACKGROUND[0002]Commercial greenhouses are high tech production facilities for vegetables and flowers. Heretofore, such greenhouses have been adapted for use in regions with cold winters and arid summers. In such climates, the greenhouse interior may be heated in winter months such as by using boilers, heat pumps, or heat transferred from hot engine exhaust. Such greenhouses may be cooled during hot summer months through evaporative cooling systems. One example of such a cooling system is a pad and fan, which draws dry outside air through a wet porous pad to cool the air via evaporative cooling. To work, the fan must continuously draw ambient air through the pad and exhaust the cooled air to the outside. Fogging and misting systems are also widely used to cool greenhouses in a...

Claims

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Application Information

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IPC IPC(8): A01G9/18
CPCA01G9/18A01G9/246Y02A40/25
Inventor SHELOR, F. MACK
Owner TROPOS TECH LLC
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