Patents by Inventor Stephen A. Hamstra

Stephen A. Hamstra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11543164
    Abstract: An exemplary heating, ventilation, and air conditioning (HVAC) system for a building includes a primary heat pump system having a primary heat pump system size, a secondary heat pump system having a secondary heat pump system size less than the primary heat pump system size, a thermal energy storage system, and a control system operable to control operation of the primary heat pump system and the secondary heat pump system. The control system may limit operation of the secondary heat pump system to a first time period, and operates the primary heat pump system according to demand of the building.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: January 3, 2023
    Assignee: Melink Solar & Geo, Inc.
    Inventors: Stephen K. Melink, Stephen Hamstra, Roshan Revankar
  • Publication number: 20210293439
    Abstract: A demand control ventilation system is disclosed. Sensors positioned in the building measure a corresponding air quality parameter. Each air quality parameter is indicative as to a current demand required for ventilation of the building based on human activity conducted by occupants present in the building. A controller monitors each air quality parameter to determine whether any air quality parameter deviates beyond the corresponding air quality parameter threshold. The controller activates a graduated action when each air quality parameter deviates beyond the corresponding air quality parameter threshold to automatically adjust the ventilation of the building to maintain the current demand of the ventilation within the current demand threshold. The current demand threshold is a ventilation level of the ventilation of the building that satisfies the current demand based on human activity and prevents unnecessary energy consumption to satisfy the current demand.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 23, 2021
    Inventors: Stephen K. Melink, Stephen Hamstra
  • Patent number: 11092353
    Abstract: A method of designing an optimized heating and cooling system includes: (1) automatically importing data from an energy model into an optimization model; (2) simulating energy use of a virtual heating and cooling system operating a thermal source or sink with the optimization model based upon the data from the energy model to obtain an optimized system design; (3) developing controls for an actual heating and cooling system based upon the optimized system design; and (4) automatically exporting the controls directly to a controller for the actual heating and cooling system.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: August 17, 2021
    Assignee: GREENSLEEVES TECHNOLOGIES CORP.
    Inventor: Stephen A. Hamstra
  • Publication number: 20210156601
    Abstract: An exemplary heating, ventilation, and air conditioning (HVAC) system for a building includes a primary heat pump system having a primary heat pump system size, a secondary heat pump system having a secondary heat pump system size less than the primary heat pump system size, a thermal energy storage system, and a control system operable to control operation of the primary heat pump system and the secondary heat pump system. The control system may limit operation of the secondary heat pump system to a first time period, and operates the primary heat pump system according to demand of the building.
    Type: Application
    Filed: November 23, 2020
    Publication date: May 27, 2021
    Inventors: Stephen K. Melink, Stephen Hamstra, Roshan Revankar
  • Publication number: 20190370415
    Abstract: A method of designing an optimized heating and cooling system includes: (1) automatically importing data from an energy model into an optimization model; (2) simulating energy use of a virtual heating and cooling system operating a thermal source or sink with the optimization model based upon the data from the energy model to obtain an optimized system design; (3) developing controls for an actual heating and cooling system based upon the optimized system design; and (4) automatically exporting the controls directly to a controller for the actual heating and cooling system.
    Type: Application
    Filed: August 19, 2019
    Publication date: December 5, 2019
    Inventor: Stephen A. HAMSTRA
  • Patent number: 10387581
    Abstract: A method of designing an optimized heating and cooling system includes: (1) automatically importing data from an energy model into an optimization model; (2) simulating energy use of a virtual heating and cooling system operating a thermal source or sink with the optimization model based upon the data from the energy model to obtain an optimized system design; (3) developing controls for an actual heating and cooling system based upon the optimized system design; and (4) automatically exporting the controls directly to a controller for the actual heating and cooling system.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: August 20, 2019
    Assignee: Greensleeves, LLC
    Inventor: Stephen A. Hamstra
  • Publication number: 20190219308
    Abstract: Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.
    Type: Application
    Filed: January 14, 2019
    Publication date: July 18, 2019
    Inventors: Stephen A. HAMSTRA, W. Michael Linn
  • Patent number: 10180268
    Abstract: Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: January 15, 2019
    Assignee: Greensleeves, LLC
    Inventors: Stephen A. Hamstra, W. Michael Linn
  • Publication number: 20160195288
    Abstract: A method of designing an optimized heating and cooling system includes: (1) automatically importing data from an energy model into an optimization model; (2) simulating energy use of a virtual heating and cooling system operating a thermal source or sink with the optimization model based upon the data from the energy model to obtain an optimized system design; (3) developing controls for an actual heating and cooling system based upon the optimized system design; and (4) automatically exporting the controls directly to a controller for the actual heating and cooling system.
    Type: Application
    Filed: September 5, 2014
    Publication date: July 7, 2016
    Inventor: Stephen A. HAMSTRA
  • Publication number: 20160018125
    Abstract: A method of designing an optimized heating and cooling system includes: (1) simulating energy use of a virtual heating and cooling system operating a first potential thermal source or sink under a plurality of conditions; (2) simulating energy use of the virtual heating and cooling system operating a second potential thermal source or sink under a plurality of conditions; (3) optimizing the energy use of the virtual system operating the first potential thermal source or sink or the second potential thermal source or sink using neural network optimization; and (4) designing a heating and cooling system based upon the optimization of the energy use of the virtual system.
    Type: Application
    Filed: March 4, 2014
    Publication date: January 21, 2016
    Inventors: Stephen A. HAMSTRA, Michael W LINN, Shane Richard MASON, Abram Richard GLAS
  • Publication number: 20150316295
    Abstract: Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.
    Type: Application
    Filed: July 13, 2015
    Publication date: November 5, 2015
    Inventors: Stephen A. HAMSTRA, W. Michael LINN
  • Patent number: 9080789
    Abstract: Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: July 14, 2015
    Assignee: Greensleeves, LLC
    Inventors: Stephen A. Hamstra, W. Michael Linn
  • Publication number: 20110272117
    Abstract: Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.
    Type: Application
    Filed: May 5, 2011
    Publication date: November 10, 2011
    Applicant: Greensleeves, LLC
    Inventors: Stephen A. Hamstra, W. Michael Linn