A data center includes heat producing components and an air handling system that provides reduced relative humidity air to cool the heat producing components. The air handling system includes a thermal storage unit that removes thermal energy from incoming air under a given set of ambient air conditions and releases thermal energy into incoming air under another set of ambient air conditions. Under the given set of ambient air conditions, the thermal storage unit cools the incoming air and causes water vapor to condense out of the incoming air. Under the other set of ambient air conditions, the thermal storage unit releases thermal energy into the incoming air, thus heating the incoming air.

A data center includes heat producing components and an air handling system that provides reduced relative humidity air to cool the heat producing components. The air handling system includes a thermal storage unit that removes thermal energy from incoming air under a given set of ambient air conditions and releases thermal energy into incoming air under another set of ambient air conditions. Under the given set of ambient air conditions, the thermal storage unit cools the incoming air and causes water vapor to condense out of the incoming air. Under the other set of ambient air conditions, the thermal storage unit releases thermal energy into the incoming air, thus heating the incoming air.

A vapor compression system includes a primary loop, an auxiliary loop, and first and second valves. The primary loop includes an indoor heat exchanger, an outdoor heat exchanger, and a compressor. The first valve is positionable in first and second positions, such that the first valve fluidly connects the indoor heat exchanger to the compressor in the first position. The second valve is positionable in third and fourth positions, such that the second valve fluidly connects the indoor and outdoor heat exchangers in the third position. The auxiliary loop includes a thermal storage unit, a supply duct, and a return duct. The supply duct fluidly connects a thermal storage unit exit to the indoor heat exchanger when the first valve is in the second position. The return duct fluidly connects a thermal storage unit inlet to the indoor heat exchanger when the second valve is in the fourth position.

A vapor compression system includes a primary loop, an auxiliary loop, and first and second valves. The primary loop includes an indoor heat exchanger, an outdoor heat exchanger, and a compressor. The first valve is positionable in first and second positions, such that the first valve fluidly connects the indoor heat exchanger to the compressor in the first position. The second valve is positionable in third and fourth positions, such that the second valve fluidly connects the indoor and outdoor heat exchangers in the third position. The auxiliary loop includes a thermal storage unit, a supply duct, and a return duct. The supply duct fluidly connects a thermal storage unit exit to the indoor heat exchanger when the first valve is in the second position. The return duct fluidly connects a thermal storage unit inlet to the indoor heat exchanger when the second valve is in the fourth position.

An air conditioner according to an embodiment includes a compressor that compresses a refrigerant, an indoor unit that performs heat exchange between air inside a room and the refrigerant, an outdoor unit that performs heat exchange between outdoor air and the refrigerant, a heat storage unit that performs heat exchange with the refrigerant, a room temperature sensor that detects an indoor temperature that is a temperature inside the room, and a control unit that drives the compressor based on a difference between the indoor temperature and a set temperature, and that also allows the heat storage unit to perform heat exchange when the difference of the set temperature falls below a predetermined value.

An air conditioner according to an embodiment includes a compressor that compresses a refrigerant, an indoor unit that performs heat exchange between air inside a room and the refrigerant, an outdoor unit that performs heat exchange between outdoor air and the refrigerant, a heat storage unit that performs heat exchange with the refrigerant, a room temperature sensor that detects an indoor temperature that is a temperature inside the room, and a control unit that drives the compressor based on a difference between the indoor temperature and a set temperature, and that also allows the heat storage unit to perform heat exchange when the difference of the set temperature falls below a predetermined value.

A thermal energy exchange and ventilated hollow core slab system and method within a building where the slab has an air passage with an inlet and outlet, an air handler unit having adjustable heating/cooling structure and, and ventilation structure connected to the hollow core concrete slab, and a building control connected to the hollow core concrete slab and air handler system for relative thermal exchange between the air and hollow core concrete slab to control user comfort; where the building is grid enabled.

A thermal energy exchange and ventilated hollow core slab system and method within a building where the slab has an air passage with an inlet and outlet, an air handler unit having adjustable heating/cooling structure and, and ventilation structure connected to the hollow core concrete slab, and a building control connected to the hollow core concrete slab and air handler system for relative thermal exchange between the air and hollow core concrete slab to control user comfort; where the building is grid enabled.