Integrated ventilation cooling system
First Claim
1. A system for using outside ventilation air to maintain indoor comfort and air quality, comprising an air delivery means, damper means, sensor means, and control means, wherein:
- said air delivery means supplies outside air to a building interior regulated by said control means for the purpose of providing ventilation cooling;
said damper means directs airflow from said air delivery means using a first and second position, wherein said damper first position causes said air delivery means to recirculate indoor air, and said damper second position causes said air delivery means to supply outside air to indoor spaces and to release a similar volume of indoor air to outdoors;
said sensor means includes an indoor sensor and an outdoor sensor, both for measuring air temperature;
said control means includes a single user interface and a controller;
said user interface and said controller connected by a communication means;
said user interface includes buttons for establishing control settings;
said user interface allows the user to establish preferred minimum and maximum indoor temperature settings;
said controller includes a microprocessor programmed with algorithms for predicting outdoor and indoor temperatures from temperature data obtained from said indoor and outdoor temperature sensors and from said minimum and maximum temperature settings;
said controller conveying said predictions to said user interface where they are graphically displayed and from which a user of said system can select settings that maintain a desired comfort level and minimize needs for cooling of the building interior using vapor compression-based air conditioning;
said algorithms calculate a ventilation limit temperature which is greater than or equal to said minimum temperature setting and which increases with decreasing building cooling requirements to prevent over-cooling;
said control means initiates said ventilation cooling operation by activating said air delivery means and by changing position of said damper means to said second position when the temperature sensed by said indoor sensor exceeds the temperature sensed by said outdoor sensor by a predetermined magnitude, and terminates said ventilation cooling operation when the temperature sensed by said indoor sensor falls below said ventilation limit temperature;
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Accused Products
Abstract
A system and method for cooling and heating of buildings consisting of an integrated assembly of devices, including a variable speed air handler, hot water heating coil, outside air damper, controller, and optional compressor-based air conditioner. During summer the system utilizes nighttime outside air for cooling and uses air temperature predictions to provide information about optimal control settings and to maintain comfort. During winter the system varies airflow with heating demand and ventilates with outside air to maintain indoor air quality.
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Citations
24 Claims
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1. A system for using outside ventilation air to maintain indoor comfort and air quality, comprising an air delivery means, damper means, sensor means, and control means, wherein:
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said air delivery means supplies outside air to a building interior regulated by said control means for the purpose of providing ventilation cooling;
said damper means directs airflow from said air delivery means using a first and second position, wherein said damper first position causes said air delivery means to recirculate indoor air, and said damper second position causes said air delivery means to supply outside air to indoor spaces and to release a similar volume of indoor air to outdoors;
said sensor means includes an indoor sensor and an outdoor sensor, both for measuring air temperature;
said control means includes a single user interface and a controller;
said user interface and said controller connected by a communication means;
said user interface includes buttons for establishing control settings;
said user interface allows the user to establish preferred minimum and maximum indoor temperature settings;
said controller includes a microprocessor programmed with algorithms for predicting outdoor and indoor temperatures from temperature data obtained from said indoor and outdoor temperature sensors and from said minimum and maximum temperature settings;
said controller conveying said predictions to said user interface where they are graphically displayed and from which a user of said system can select settings that maintain a desired comfort level and minimize needs for cooling of the building interior using vapor compression-based air conditioning;
said algorithms calculate a ventilation limit temperature which is greater than or equal to said minimum temperature setting and which increases with decreasing building cooling requirements to prevent over-cooling;
said control means initiates said ventilation cooling operation by activating said air delivery means and by changing position of said damper means to said second position when the temperature sensed by said indoor sensor exceeds the temperature sensed by said outdoor sensor by a predetermined magnitude, and terminates said ventilation cooling operation when the temperature sensed by said indoor sensor falls below said ventilation limit temperature;
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification