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Integrated Temperature and Humidity Control: A Unique Approach
During hot and humid periods, a comfortable indoor environment can be attained only by controlling both the dry-bulb temperature and the humidity in the space. Conventional thermostats control the ON/OFF status of a cooling plant to maintain only the dry-bulb temperature within the conditioned space. This can result in the space dew-point temperature increasing to uncomfortable levels, especially during cool and humid times of the day and/or when there is high latent gain. Consequently, the occupant must resort to undesirable and inefficient interventions (e.g., manually lowering the space dry-bulb temperature set point) to "sweat out" the water from the air. An innovative controller, the Integrated Temperature and Humidity Controller, has been invented for controlling both the dry-bulb temperature and the absolute moisture content of the air in a conditioned space. These new algorithms have been implemented in a product prototype, and limited field tests have been performed. Preliminary results confirm the expected operation and performance of the controller and its robustness and are extremely encouraging.
Shah, D. J. (2000). Integrated Temperature and Humidity Control: A Unique Approach. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from