Space air conditioning control system and apparatus
First Claim
1. In a condition control system for ambient air in an enclosed space containing independently cooled moisture condensing surfaces, first switching means operable when energized to cool said air, second switching means operable when energized to heat said air, means responsive to ambient air temperature above a preselected normal range for energizing said first switching means and responsive to ambient air temperature below said range for energizing said second switching means, means responsive to absolute moisture content of said ambient air in excess of a preselected maximum value, and means operable by said moisture content responsive means for energizing said first switching means independently of said air temperature responsive means and without disabling said second switching means.
10 Assignments
0 Petitions
Accused Products
Abstract
In an air conditioning system for selectably heating and cooling an enclosed space under control of a room thermostat, dew point temperature of ambient air in the space is maintained below a preselected maximum value by modified use of the heating and cooling apparatus without separate humidity control. For this purpose the cooling apparatus is controlled by a sensor responsive to absolute moisture content in parallel with the normal thermostat control. Energy is further conserved by night set-back of the thermostat with cooling apparatus normally disabled in night set-back.
100 Citations
17 Claims
- 1. In a condition control system for ambient air in an enclosed space containing independently cooled moisture condensing surfaces, first switching means operable when energized to cool said air, second switching means operable when energized to heat said air, means responsive to ambient air temperature above a preselected normal range for energizing said first switching means and responsive to ambient air temperature below said range for energizing said second switching means, means responsive to absolute moisture content of said ambient air in excess of a preselected maximum value, and means operable by said moisture content responsive means for energizing said first switching means independently of said air temperature responsive means and without disabling said second switching means.
- 6. In a system for controlling the condition of ambient air in an enclosed space containing independently controlled refrigerating equipment having cooled moisture condensing surfaces within said space and a refrigerant condenser outside said space, heating means including said refrigerant condenser for transferring heat from said equipment to said ambient air, means including a refrigerant evaporator for cooling said ambient air, first switching means operable when energized to render said evaporator operable to cool said air, second switching means operable when energized to render said condenser operable to heat said air, means responsive to ambient air temperature above a preselected normal range for energizing said first switching means and responsive to ambient air temperature below said range for energizing said second switching means, means responsive to absolute moisture content of said ambient air in excess of a preselected maximum value, and means operable by said moisture content responsive means for energizing said first switching means independently of said air temperature responsive means and without disabling said second switching means.
- 11. The method for maintaining below a predetermined maximum value the dew point temperature of ambient air in a conditioned space provided with heating and cooling apparatus which comprises, cooling said ambient air when dry bulb temperature of said air exceeds a predetermined normal range, heating said air when dry bulb temperature of said air falls below said normal range, cooling said ambient air independently of said dry bulb temperature whenever absolute moisture content of said air exceeds a predetermined maximum value, and reheating said ambient air if said dry bulb temperature falls below said normal range due to cooling in response to excessive absolute moisture content.
Specification