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Title: Rooftop package unit diagnostician

Abstract

A diagnostic system for an HVAC system includes a number of sensors used to measure the operation of the HVAC system. Sensor readings are measured by timing the delay between when a strobe signal is sent to a sensor and when an interrupt signal from the sensor is received. A device driver used to measure the sensor readings stores the sensor readings in pseudo-character device files, which are universally accessible by different subsystems of the diagnostic system. Based on the readings from these sensors, this diagnostic system is able to determine the operational status of the HVAC system and if an economizer in the HVAC system is operating properly.

Inventors:
 [1];  [2];  [3]
  1. Pasco, WA
  2. Kennewick, WA
  3. Benton City, WA
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1007796
Patent Number(s):
6778945
Application Number:
10/020,849
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F24 - HEATING F24F - AIR-CONDITIONING
G - PHYSICS G05 - CONTROLLING G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Chassin, David P, Pratt, Robert G, and Reid, Larry Dean. Rooftop package unit diagnostician. United States: N. p., 2004. Web.
Chassin, David P, Pratt, Robert G, & Reid, Larry Dean. Rooftop package unit diagnostician. United States.
Chassin, David P, Pratt, Robert G, and Reid, Larry Dean. Tue . "Rooftop package unit diagnostician". United States. https://www.osti.gov/servlets/purl/1007796.
@article{osti_1007796,
title = {Rooftop package unit diagnostician},
author = {Chassin, David P and Pratt, Robert G and Reid, Larry Dean},
abstractNote = {A diagnostic system for an HVAC system includes a number of sensors used to measure the operation of the HVAC system. Sensor readings are measured by timing the delay between when a strobe signal is sent to a sensor and when an interrupt signal from the sensor is received. A device driver used to measure the sensor readings stores the sensor readings in pseudo-character device files, which are universally accessible by different subsystems of the diagnostic system. Based on the readings from these sensors, this diagnostic system is able to determine the operational status of the HVAC system and if an economizer in the HVAC system is operating properly.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {8}
}