Energy efficiency of air conditioning system by using dual suction compressor

A method for selectively transferring latent and sensible heat from air in a cooling system of a building structure interior volume comprising the steps of

• providing a building structure air conditioning system that provides cooling to at least a portion of the interior volume of a building structure wherein the air conditioning system comprises:
• a dual suction compressor;
• a control unit in signal communication with at least the dual suction compressor;
• a condenser;
• at least two evaporators wherein a first evaporator operates at a first evaporator pressure and a second evaporator operates at a second evaporator pressure that is different than the first evaporator pressure;
• at least a first throttling device in coolant fluid communication with the first evaporator and a second throttling device associated with the second evaporator and wherein the first throttling device and the second throttling device have different throttling characteristics with the first throttling device being less restrictive than a second throttling device;
• and
• a plurality of refrigerant conduits containing refrigerant fluid fluidly connecting the compressor, condenser, the first throttling device, the second throttling device, the first evaporator, and the second evaporator;
• and
• wherein a refrigerant fluid leaves the compressor along at least one refrigerant flow-path, through the condenser and into the first and second throttling devices that thereafter deliver refrigerant fluid to the first evaporator and to the second evaporator and wherein the first evaporator circuit portion operates at a higher temperature than the second evaporator circuit portion and wherein the first evaporator circuit portion and the second evaporator circuit portion merge and rejoin the common refrigerant flow-path portion;
• and
• adjusting a ratio of a time coolant flows through the first evaporator to a time coolant flows through the second evaporator to vary the temperature differential between the two evaporators to effect the energy usage and or to effect the ratio of latent to sensible cooling of the conditioned air stream.

A method for selectively transferring latent and sensible heat from air in a cooling system of a building structure interior volume comprising the steps of:

• providing a building structure forced air, air conditioning system that provides cooling to at least a portion of the interior volume of a building structure wherein the air conditioning system comprises:
• a compressor positioned outside the building structure having at least a first suction port and a second suction port;
• a control unit in signal communication with at least the compressor that controls at least the operation of the compressor;
• at least one condenser positioned outside the building structure;
• at least two evaporators wherein a first evaporator operates at a first evaporator pressure and a second evaporator operates at a second evaporator pressure that is different than the first evaporator pressure;
• at least a first throttling device in coolant fluid communication with the first evaporator and a second throttling device associated with the second evaporator and wherein the first throttling device and the second throttling device have different throttling characteristics with the first throttling device being less restrictive than a second throttling device;
• and
• a plurality of refrigerant conduits containing refrigerant fluid fluidly connecting the compressor, condenser, the first throttling device, the second throttling device, the first evaporator, and the second evaporator;
• a supply fan that circulates air past at least the first evaporator section and circulates air to and from the one or more building areas within the building structure;
• and
• wherein a refrigerant fluid leaves the compressor along at least one refrigerant flow-path, through the condenser and into the first and second throttling devices that thereafter deliver refrigerant fluid to the first evaporator and to the second evaporator and wherein the first evaporator circuit portion operates at a higher temperature than the second evaporator circuit portion;
• and
• using the control unit to control a ratio of a time coolant flows through the first evaporator to a time coolant flows through the second evaporator such that coolant flows through the first evaporator for more time than the second evaporator when more latent heat is removed from the air and more coolant flows through the second evaporator for more time than the first evaporator when more sensible heat is removed from the air.