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US 4,903,759 AGranted
Apparatus and method for monitoring and controlling heating and/or cooling systems
OwnerJohn G. Lapeyrouseinventor
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OwnerJohn G. Lapeyrouseinventor
Estimating the term…
This invention relates to an apparatus and method for monitoring and controlling a heating and/or cooling system which controls the temperature of air in a conditioned space within a building and to such an apparatus and method capable of indicating the performance of such a system and effectuating control over the system for maximizing the operating efficiency of the system. As compared with a conventional control system, additional temperature sensors are provided to sense the temperatures of air drawn into and discharged from a temperature modifying unit such as an air handling unit having a heat exchange coil. The sensed temperatures are then used as a basis for determining the differential attained by flowing air through the unit, and compared with a desired differential taken as indicating an optimal condition, with the percentage of attainment of the optimal differential being visually displayed for an operator of the system. The attainment or non-attainment of certain target differentials within certain predetermined time intervals is used to control the operation of the system by either stopping such operation and draw attention to a clearly defective system or cycling the system to operate a satisfactory system in the most economical way. Application to systems other than circulating air systems is suggested.
In an apparatus for changing the temperature of air in a conditioned space and having a first temperature sensor for sensing the temperature of air in the conditioned space and a temperature modifying unit for circulating a flow of air through the conditioned space and changing the temperature of the flowing air, the unit being operatively connected with and responsive to the first temperature sensor, an improved system for monitoring the efficiency of operation of the apparatus and comprising:
In an apparatus for changing the temperature of air in a conditioned space and having a first temperature sensor for sensing the temperature of air in the conditioned space and a temperature modifying unit for circulating a flow of air through the conditioned space and changing the temperature of the flowing air, the unit being operatively connected with and responsive to the first temperature sensor, an improved control system for optimizing the efficiency of operation of the apparatus and comprising:
In an apparatus for changing the temperature of air in a conditioned space and having a first temperature sensor for sensing the temperature of air in the conditioned space and a temperature modifying unit for circulating a flow of air through the conditioned space and changing the temperature of the flowing air, the unit being operatively connected with and responsive to the first temperature sensor, an improved control system for optimizing the efficiency of operation of the apparatus and comprising:
In an apparatus for changing the temperature of air in a conditioned space and having a first temperature sensor for sensing the temperature of air in the conditioned space and a temperature modifying unit for circulating a flow of air through the conditioned space and changing the temperature of the flowing air, the unit being operatively connected with and responsive to the first temperature sensor, an improved control system for optimizing the efficiency of operation of the apparatus and comprising:
In an apparatus for changing the temperature of air in a conditioned space and having a first temperature sensor for sensing the temperature of air in the conditioned space and a temperature modifying unit for circulating a flow of air through the conditioned space and changing the temperature of the flowing air, the unit being operatively connected with and responsive to the first temperature sensor, an improved control system for optimizing the efficiency of operation of the apparatus and comprising:
In an apparatus for changing the temperature of air in a conditioned space and having first temperature sensing means in the conditioned space for sensing the temperature of air in that space and an air handling unit with a fan for circulating a flow of air through the conditioned space and a temperature modifying element for changing the temperature of air flowing through the air handling unit and operatively connected with and responsive to the first temperature sensing means, an improved control system for optimizing the efficiency of operation of the apparatus and comprising:
In a method of controlling the temperature of air circulating in a conditioned space and which includes steps of sensing the temperature of air in the conditioned space, circulating a flow of air through the conditioned space and changing the temperature of the flowing air in response to any difference between the sensed temperature thereof and a desired temperature, an improvement in monitoring the efficiency of the method which comprises the steps of sensing the temperatures of return air drawn from the space and supply air returned to the space;
In a method of controlling the temperature of air circulating in a conditioned space and which includes steps of sensing the temperature of air in the conditioned space, circulating a flow of air through the conditioned space and changing the temperature of the flowing air in response to any difference between the sensed temperature thereof and a desired temperature, an improvement in monitoring the efficiency of the method and controlling the temperature change which comprises the steps of sensing the temperatures of return air drawn from the space and supply air returned to the space;
Dependencies are inferred from the claim text.