System enclosure ventilation monitoring system

Abstract

A system enclosure ventilation monitoring system includes a controller having an enclosure temperature input configured to receive signals indicating internal temperatures of the system enclosure, an air circulating device speed input configured to receive signals indicating operating speed of at least one air circulating device, and a damper position input configured to receive a damper position signal and an output. The controller is configured and disposed to set damper position through the output based on at least one of the air circulating device speed input and the enclosure temperature input.

What is claimed is: 
     
         1 . A system enclosure ventilation monitoring system comprising:
 a controller including an enclosure temperature input configured to receive signals indicating internal temperatures of a the system enclosure, an air circulating device speed input configured to receive signals indicating operating speed of at least one air circulating device, and a damper position input configured to receive a damper position signal and an output, the controller being configured and disposed to set damper position through the output based on at least one of the air circulating device speed input and the enclosure temperature input.   
     
     
         2 . The system enclosure ventilation monitoring system according to  claim 1 , wherein the controller further includes a hazardous gas detection input, the controller being configured and disposed to output a damper open signal and a maximum air circulating device speed signal upon receiving a hazardous gas detected signal through the hazardous gas detection input. 
     
     
         3 . The system enclosure ventilation monitoring system according to  claim 1 , wherein the controller further includes a door position input, the controller being configured and disposed to output a predetermined signal upon detecting an enclosure door open signal through the door position input. 
     
     
         4 . The system enclosure ventilation monitoring system according to  claim 1 , wherein the controller further includes a damper position feedback input configured and disposed to provide a damper position change signal indicating a change in damper position. 
     
     
         5 . The system enclosure ventilation monitoring system according to  claim 1 , wherein the controller further includes an ambient temperature input, the controller being configured and disposed to set damper position based, at least in part, on an ambient temperature signal received through the ambient temperature input. 
     
     
         6 . A system enclosure comprising:
 a plurality of walls that define the system enclosure;   a turbomachine system arranged within the system enclosure;   at least one air circulating system including at least one air circulating device coupled to a motor and at least one damper having one or more louvers coupled to a damper motor, the at least one air circulating device being configured and disposed to create airflow through the at least one damper into the system enclosure;   at least one temperature sensor arranged in the system enclosure, the at least one temperature sensor being configured and disposed to detect an enclosure temperature;   at least one air circulating device speed sensor configured to detect a speed of the at least one air circulating device;   a damper position sensor configured and disposed to detect a position of the one or more louvers; and   a system enclosure ventilation monitoring system including a controller having an enclosure temperature input operatively connected to the at least one temperature sensor, an air circulating device speed input operatively connected to the at least one air circulating device speed sensor, and a damper position input operatively connected to the at least one damper position sensor, an output operatively connected to at least the damper motor, the controller being configured and disposed to set damper position through the output based on at least one of the air circulating device speed input and the enclosure temperature input.   
     
     
         7 . The system enclosure according to  claim 6 , further comprising: a hazardous gas detection system having a hazardous gas detection sensor, wherein the controller includes a hazardous gas detection system input operatively coupled to the hazardous gas detection system, the controller being configured and disposed control at least one of air circulating device speed and damper position upon receiving a hazardous gas detected signal. 
     
     
         8 . The system enclosure according to  claim 7 , wherein the controller is configured and disposed to operate the at least one air circulating device at an increased speed and open the damper to a full open position upon receiving the hazardous gas detected signal. 
     
     
         9 . The system enclosure according to  claim 6 , further comprising: an door providing access to the system enclosure and a door position sensor configured and disposed to send an enclosure door open signal, wherein the controller includes a door position input operatively coupled to the door position sensor, the controller being configured and disposed to output an alarm signal upon detecting an enclosure door open signal through the door position input. 
     
     
         10 . The system enclosure according to  claim 6 , wherein the controller includes a damper position feedback input operatively coupled to the damper position sensor, the damper position feedback input being configured and disposed to provide a damper position change signal indicating that the at least one damper has moved to the position. 
     
     
         11 . The turbomachine enclosure according to  claim 10 , wherein the one or more louvers are configured and disposed to remain in a last set position upon failure, the controller being configured and disposed to provide an alert indicating a damper failure based on the damper position change signal. 
     
     
         12 . The system enclosure according to  claim 6 , further comprising: an ambient temperature sensor configured and disposed to detect temperature outside of the system enclosure, wherein the controller includes an ambient temperature input operatively coupled to the ambient temperature sensor, the controller being configured and disposed to set damper position based, at least in part, on an ambient temperature signal received through the ambient temperature input. 
     
     
         13 . A method of ventilating a system enclosure comprising:
 sensing temperature within the system enclosure;   receiving an air circulating device speed input from at least one air circulating device; and   shifting one or more louvers provided on a damper to a desired position to control airflow into the system enclosure in response to one of the air circulating device speed input and the temperature within the system enclosure.   
     
     
         14 . The method of  claim 13 , further comprising:
 receiving input indicating a hazardous gas release within the system enclosure; and   shifting the one or more louvers to a full open position and operating the at least one air circulating device at a high speed in response to the sensed hazardous gas release.   
     
     
         15 . The method of  claim 13 , further comprising: sensing whether the one or more louvers shifted from a first position to the desired position. 
     
     
         16 . The method of  claim 15 , further comprising: maintaining the louvers in the first position if the one or more louvers cannot shift to the desired position. 
     
     
         17 . The method of  claim 13 , further comprising: shifting the one or more louvers provided on the damper of the at least one MIAD assembly to the desired position in response to the air circulating device speed input and the temperature within the system enclosure. 
     
     
         18 . The method of  claim 13 , further comprising: varying air circulating device speed in response to the sensed temperature in the system enclosure. 
     
     
         19 . The method of  claim 13 , further comprising:
 sensing ambient temperature outside of the system enclosure; and   shifting the one or more louvers to the desired position based, at least in part, on the sensed ambient temperature.   
     
     
         20 . The method of  claim 13 , further comprising:
 receiving a door open signal indicating that a door of the system enclosure is open; and   generating an alarm signal until a door closed signal is received.