Apparatus for tensioning pliable airducts while supporting internal HVAC components are disclosed. An airduct system includes an airduct having an elongate tubular wall of a pliable material. The airduct system further includes a frame disposable inside the tubular wall of the airduct, the frame including a hoop to support the tubular wall in a radial direction, the hoop to define an opening to provide passage of a flow of air along a length of the airduct. The airduct system also includes an HVAC component disposable within the tubular wall of the airduct, the HVAC component to be attached to and supported by the frame inside the airduct, the HVAC component to adjust a characteristic of the air.

Provided is an air-cooling/heating switching type air-conditioning system which includes multiple indoor units, and includes: a receiving section configured to receive information regarding an operation state of air-cooling or air-heating from one indoor unit of the multiple indoor units; a switching section configured to switch the operation state of the air-cooling or the air-heating according to the received information; a control section configured to make such control that operation is performed in cooperation with the one indoor unit in a case where the operation state is switched; and a transmission section configured not to transmit, in the case where the operation state is switched, information on the operation state to other operating indoor units of the multiple indoor units and to transmit an operation instruction to equipment placed in spaces identical to those of the other indoor units to adjust temperatures.

Provided is an air-cooling/heating switching type air-conditioning system which includes multiple indoor units, and includes: a receiving section configured to receive information regarding an operation state of air-cooling or air-heating from one indoor unit of the multiple indoor units; a switching section configured to switch the operation state of the air-cooling or the air-heating according to the received information; a control section configured to make such control that operation is performed in cooperation with the one indoor unit in a case where the operation state is switched; and a transmission section configured not to transmit, in the case where the operation state is switched, information on the operation state to other operating indoor units of the multiple indoor units and to transmit an operation instruction to equipment placed in spaces identical to those of the other indoor units to adjust temperatures.

A portable air cooler for cooling air circulated in a designated area. The portable air cooler comprises an air inlet; an air outlet; a refrigeration unit including a cooling coil, a compressor, a heating coil and an expansion valve operatively interconnected with each other; a receptacle for containing water; and a centrifugal fan preferably positioned between an evaporative pad and the air outlet. The cooling coil is configured for placement in the receptacle for cooling water contained therein. A water pump delivers cooled water to the evaporative pad mounted proximate the air inlet through at least one conduit. The centrifugal fan draws ambient air through the evaporative pad from the air inlet and directs cooled air into the designated area through the air outlet. A part of the cooled air is channeled through an air duct to cool the heating coil, reducing waste heat generated by the heating coil.

A movable air conditioner includes an air conditioner main body, an air conditioning unit installed in the air conditioner main body and configured to generate a cold air or a warm air, a moving unit configured to move the air conditioner main body, a control unit configured to control the air conditioning unit and the moving unit, and a human body recognition unit configured to recognize a person existing in a specific space. The control unit is configured to control the moving unit so that the air conditioner main body is moved toward the person recognized by the human body recognition unit so as to supply the cold air or the warm air from the air conditioning unit to the person recognized by the human body recognition unit.

The invention provides a system (1) comprising a fan assembly (100) with a plurality of nozzle openings (115a, 115b, . . . ) for creating air flows (111a, 111b, . . . ), the fan assembly (100) configured to provide the air flows (111a, 111b, . . . ) in at least two non-parallel directions (112a, 112b, . . . ), wherein the at least two non-parallel directions (112a, 112b, . . . ) are configured within a virtual cone (30) having an apex angle () selected from the range of 10-170 and having a cone axis (31), a control system (200) configured to control the air flows (11a, 111b, . . . ), the system (1) further comprising a light source (10) configured to generate light source light (11), and the system (1) further comprising heating elements (113a, 113b, . . . ) for heating the respective flows (111a, 111b, . . . ).

The invention provides a system (1) comprising a fan assembly (100) with a plurality of nozzle openings (115a, 115b, . . . ) for creating air flows (111a, 111b, . . . ), the fan assembly (100) configured to provide the air flows (111a, 111b, . . . ) in at least two non-parallel directions (112a, 112b, . . . ), wherein the at least two non-parallel directions (112a, 112b, . . . ) are configured within a virtual cone (30) having an apex angle () selected from the range of 10-170 and having a cone axis (31), a control system (200) configured to control the air flows (11a, 111b, . . . ), the system (1) further comprising a light source (10) configured to generate light source light (11), and the system (1) further comprising heating elements (113a, 113b, . . . ) for heating the respective flows (111a, 111b, . . . ).

An HVACR fan and heater assembly accounts for the cyclonic flow produced by centrifugal blowers by placing a heater vertically and biased towards a side of a fan cabinet in order to increase and balance airflow through the heater, eliminating hot spots and fire risk and improving heater efficiency. A blockoff in the fan cabinet forces airflow within the cabinet to move through the heater. The positioning of the heater may vary depending on the direction of rotation of the centrifugal blower. The fan and heater assembly may further include baffles to direct the airflow from the centrifugal blower.

The present invention relates to the technical field of refrigeration, and particularly relates to a hotel-type non-outdoor-unit refrigeration system. The hotel-type non-outdoor-unit refrigeration system includes a refrigeration system and a hotel hot water supply system, the refrigeration system includes a compressor, a refrigeration end of the compressor is connected with a radiator, and a heat dissipation end of the compressor is connected with a heat sink; and the hot water supply system includes a water tank, a booster pump, a water quality purification device and a heater, the heat sink is arranged in the water tank, a tap water inlet pipe and a hot water outlet pipe are arranged on the water tank, the hot water outlet pipe is connected with the booster pump, the booster pump is connected with a water inlet of the water quality purification device, a water outlet of the water quality purification device is connected with the heater, and the heater is connected with use water outlets. According to the invention, the hotel-type non-outdoor-unit refrigeration system is small in engineering quantity, occupies a small space and has a good refrigeration effect; each guest room is independent in water use without affection of an external environment; and the hotel-type non-outdoor-unit refrigeration system is greatly convenient for the water use demands, implements effective utilization and no waste of resources, and is energy-saving and environmental-friendly.

An air conditioning and heat pump tower includes a main casing, a plurality of connecting pipes, a compressor, a front heat exchanger, a rear heat exchanger, a fan unit, and an energy efficient arrangement. The energy efficient arrangement includes a first pre-heating heat exchanger supported in a front compartment of the main casing, and positioned between an outdoor air intake opening and an outdoor heat exchanging portion of the front heat exchanger. The air conditioning and heat pump tower may be operated between an air conditioning mode for absorbing heat from the indoor space, and a heat pump mode for producing heat to the indoor space. A predetermined amount of ambient air may be drawn through the outdoor air intake opening and may be pre-heated by the energy efficient arrangement before delivering to the indoor space.