Environmental control system with humidity control and method
First Claim
1. In an environmental control system having heating apparatus and temperature responsive means for controlling the heating apparatus, a humidity controlled sub-system, comprising:
- means for sensing the relative humidity;
a ventilation system; and
means for actuating the ventilation system in response to the relative humidity exceeding a preselected value until the heating apparatus is actuated by said temperature responsive means to increase the temperature and thereby reduce the relative humidity; and
in whichsaid heating apparatus controlling means includes a humidity sensor and a humidistatic circuit responsive to the humidity sensor for producing a binary actuation signal in response to sensed humidity.
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Accused Products
Abstract
An environmental control system has a controller (10) which causes heating apparatus (12A) or ventilation apparatus (12B) to operate through thermostatic dead zone temperature ranges, in response to excessive relative humidity. In the event the heating apparatus (12A) is actuated in response to falling temperatures, ventilation, previously called for by excess humidity, is terminated to prevent inefficiency due to concurrent heating and ventilating. After fresh air of relative lower humidity is introduced by ventilation, the fresh air is heated to further reduce the relative humidity.
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Citations
8 Claims
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1. In an environmental control system having heating apparatus and temperature responsive means for controlling the heating apparatus, a humidity controlled sub-system, comprising:
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means for sensing the relative humidity; a ventilation system; and means for actuating the ventilation system in response to the relative humidity exceeding a preselected value until the heating apparatus is actuated by said temperature responsive means to increase the temperature and thereby reduce the relative humidity; and
in whichsaid heating apparatus controlling means includes a humidity sensor and a humidistatic circuit responsive to the humidity sensor for producing a binary actuation signal in response to sensed humidity. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling the relative humidity within a controlled space, comprising the steps of:
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sensing the temperature within the controlled space; controlling a heating apparatus in accordance with sensed temperature to maintain a preselected temperature range within the controlled space; actuating a ventilation system to introduce fresh air into the controlled space; deactuating said ventillation system in response to actuation of the heating apparatus in accordance with sensed temperature; establishing a dead zone temperature range over which said heating controlling means does not call for actuation of the heating apparatus; and causing said heating apparatus to continue heating through said dead zone in response to the sensed relative humidity. - View Dependent Claims (8)
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Specification