In an air conditioning system, a return compartment which is adjacent to a plurality of rooms 13, 14, 15 is formed in a building 1, the respective rooms 13, 14, 15 are provided with air intake sections 18a, 18b, 18c, 18d which spout air sent from a blowing section 40a, 40b, 40c 40d having a DC motor, an exhaust section 52 which forms exhausting current directed from the respective rooms 13, 14, 15 toward the return compartment is provided between the respective rooms 13, 14, 15 and the return compartment, the plurality of blowing sections 40a, 40b, 40c 40d and at least one air conditioning section 30a are placed in the return compartment, a total blast volume of the plurality of blowing sections 40a, 40b, 40c 40d is greater than a conditioned air volume of the air conditioning section 30a, and a blast volume of the blowing section 40a, 40b, 40c 40d is adjusted by an air conditioning load of the room 13, 14, 15. According to this, it is possible to provide the air conditioning system 29 having a relatively simple configuration, capable of changing temperature in the respective rooms 13, 14, 15 and coping with load variation caused by solar radiation if necessary, while comfortably and uniformly keeping temperature of the entire house with saved energy.

A method for air conditioning including installing an air conditioning unit at a desired location. The air conditioning unit includes a housing that has air supply inlets and exhaust air outlets. The housing encloses a mode control unit that switches a zone coil associated with a zone from a cooling mode to a heating mode by switching from a cooling medium to a heating medium flowing through the zone coil. The zone coil receives the heating or cooling medium and conditions incoming air from a supply fan to be exhausted in a zone associated with the zone coil. A variable refrigerant flow cooling/heating unit provides a cooling medium or a heating medium at varying rates to control a temperature of a zone.

A method for air conditioning including installing an air conditioning unit at a desired location. The air conditioning unit includes a housing that has air supply inlets and exhaust air outlets. The housing encloses a mode control unit that switches a zone coil associated with a zone from a cooling mode to a heating mode by switching from a cooling medium to a heating medium flowing through the zone coil. The zone coil receives the heating or cooling medium and conditions incoming air from a supply fan to be exhausted in a zone associated with the zone coil. A variable refrigerant flow cooling/heating unit provides a cooling medium or a heating medium at varying rates to control a temperature of a zone.

An air supply system and a method for controlling operation of an air supply system for supplying a conditioned air flow at a setpoint air temperature to a climate controlled space.

An air supply system and a method for controlling operation of an air supply system for supplying a conditioned air flow at a setpoint air temperature to a climate controlled space.

The present invention relates to a system and method of HVAC (Heating, Ventilating, Air Conditioning) energy management system. More specially, the present invention provides a system and method that can provide automatic optimized control mechanism for HVAC system to save energy.

The present invention relates to a system and method of HVAC (Heating, Ventilating, Air Conditioning) energy management system. More specially, the present invention provides a system and method that can provide automatic optimized control mechanism for HVAC system to save energy.

Described herein are technologies for an enclosed, modular multi-zone variable refrigerant flow air conditioning system. In some implementations, the enclosed, modular multi-zone variable refrigerant flow air conditioning system may include a housing. The housing may have enclosed therein a variable refrigerant flow cooling/heating unit, a mode control unit, a return/exhaust fan, and a supply fan. The enclosed, modular multi-zone variable refrigerant flow air conditioning system may further include one or more units to receive a heating or cooling medium from the variable refrigerant flow cooling/heating unit to cool or heat air going to two or more zones. The enclosed, modular multi-zone variable refrigerant flow air conditioning system may be a modular unit transportable and installable as a single unit.

Described herein are technologies for an enclosed, modular multi-zone variable refrigerant flow air conditioning system. In some implementations, the enclosed, modular multi-zone variable refrigerant flow air conditioning system may include a housing. The housing may have enclosed therein a variable refrigerant flow cooling/heating unit, a mode control unit, a return/exhaust fan, and a supply fan. The enclosed, modular multi-zone variable refrigerant flow air conditioning system may further include one or more units to receive a heating or cooling medium from the variable refrigerant flow cooling/heating unit to cool or heat air going to two or more zones. The enclosed, modular multi-zone variable refrigerant flow air conditioning system may be a modular unit transportable and installable as a single unit.

A method for air conditioning including installing an air conditioning unit at a desired location. The air conditioning unit includes a housing that has air supply inlets and exhaust air outlets. The housing encloses a mode control unit that switches a zone coil associated with a zone from a cooling mode to a heating mode by switching from a cooling medium to a heating medium flowing through the zone coil. The zone coil receives the heating or cooling medium and conditions incoming air from a supply fan to be exhausted in a zone associated with the zone coil. A variable refrigerant flow cooling/heating unit provides a cooling medium or a heating medium at varying rates to control a temperature of a zone.