The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2021
Filed:
May. 07, 2019
Johnson Controls Technology Company, Auburn Hills, MI (US);
Soumyadeep Ray, Pune, IN;
Milan Mitra, Milwaukee, WI (US);
Sayan Chakraborty, Brookfield, WI (US);
Anjani Kumari, Pune, IN;
Johnson Controls Technology Company, Auburn Hills, MI (US);
Abstract
An HVAC system for a building includes an airside economizer, a plurality of sensors, and a controller. The airside economizer includes a first air intake configured to receive return air from within a building, a second air intake configured to receive outdoor air from outside the building, and an air discharge configured to provide discharge air to the building. The controller is configured to identify a wet coil condition or a dry coil condition, calculate an enthalpy of the return air and an enthalpy of the outdoor air, select either a normal cooling mode or free cooling mode based on the calculated enthalpy of the return air, the calculated enthalpy of the outdoor air, and the identification of the wet coil condition or the dry coil condition, operate the airside economizer to provide the return air to the building as the discharge air in response to selecting the normal cooling mode, and operate the airside economizer provide the outdoor air to the building as the discharge air in response to selecting the free cooling mode.