Abstract: An enclosure temperature control system utilizes a renewable power source and a thermal sink to reduce the overall power requirements from a power grid. A renewable power source, such as a solar panel may provide power that drives the components required to maintain the greenhouse temperature within upper and lower limits, including a HVAC system and/or a heat transfer system coupled with a thermal sink. The thermal sink includes a phase change material that releases heat when it solidifies and this heat can be used to heat the greenhouse. Likewise, the phase change material absorbs heat during the day to reduce the temperature within the greenhouse. A heat transfer system may be coupled with the phase change material and a solid conductor component within the tank of a phase change material may increase thermal transfer rate.

Abstract: A shipment container for perishable food items enables a receiver of the shipment container to track the temperature of the perishable food items during shipment and in some cases, the time and day of harvest and/or of shipment. The receive may use a remote electronic device, such as a mobile telephone, to track the shipment. The shipment container has phase change material that is used to control the temperature of the perishable food item during transient to the receiver. A phase change material is configured at least partially around a product compartment for receiving the perishable food item. The phase change material or modular temperature control compartment may be selected based on the type of perishable food item or based on the temperature of harvest. The shipment container may be locked and require input of an identification code to unlock the container upon delivery.

Abstract: An enclosure temperature control system utilizes a renewable power source and a thermal sink to reduce the overall power requirements from a power grid. A renewable power source, such as a solar panel may provide power that drives the components required to maintain the greenhouse temperature within upper and lower limits, including a HVAC system and/or a heat transfer system coupled with a thermal sink. The thermal sink includes a phase change material that releases heat when it solidifies and this heat can be used to heat the greenhouse. Likewise, the phase change material absorbs heat during the day to reduce the temperature within the greenhouse. A heat transfer system may be coupled with the phase change material and a solid conductor component within the tank of a phase change material may increase thermal transfer rate.