An air-conditioning system including an air handler and unique thermodynamic coil suitable for residential and commercial applications providing excellent comfort and range of operation. The arrangement includes a unique conical cylindrical evaporator coil with an air bypass opening and a cylindrical air-handler containing a fan wall dividing plenums, and heating assembly. This entire assembly may sit on top of or affix an energy recovery component and also include comfort and energy savings controls.

A heat exchanger includes a tube having a length and an outside boundary. The tube is configured to convey fluid therethrough to facilitate heat transfer, and the outside boundary of the tube having a bottom wall portion, a top wall portion opposing the bottom wall portion, and two side wall portions between the bottom wall portion and the top wall portion, in which a segment of the length of the tube has a plurality of dimples selectively placed outside of the bottom wall portion.

A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains at least 1,2-difluoroethylene.

A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains at least 1,2-difluoroethylene.

The invention relates to a method and an air condition arrangement for cooling of a user space, comprising the steps of providing an air condition arrangement (1) including a cooling media producing heat exchanger loop (10) having a low pressure tubing (106) in operational connection with a cooling media (31), which cooling media (31) includes water/ice, and having a high pressure tubing (103) in operational connection with a compressor (101) and a condenser (101) and said air condition arrangement further including a air cooling heat exchanger (2) including a cooling media storage member (20) and a flow channel (805, 806, 808) in operational connection with said cooling media (31), to enable inlet flow (801) via at least one inlet (803) of surrounding air into said air condition arrangement (1) to produce a cooled air flow (802) out from said air condition arrangement (1) via at least one outlet (804) during inactivity of said cooling media producing heat exchanger loop (10) and to intermittently produce ice in said cooling media (31) by means of said cooling media producing heat exchanger loop (10), wherein said air condition arrangement (1) provided in a, preferably movable, wall shaped housing (11) and passing inlet air (801) into a downwardly extending path (805) of said flow channel (805, 806, 808).

The invention relates to a method and an air condition arrangement for cooling of a user space, comprising the steps of providing an air condition arrangement (1) including a cooling media producing heat exchanger loop (10) having a low pressure tubing (106) in operational connection with a cooling media (31), which cooling media (31) includes water/ice, and having a high pressure tubing (103) in operational connection with a compressor (101) and a condenser (101) and said air condition arrangement further including a air cooling heat exchanger (2) including a cooling media storage member (20) and a flow channel (805, 806, 808) in operational connection with said cooling media (31), to enable inlet flow (801) via at least one inlet (803) of surrounding air into said air condition arrangement (1) to produce a cooled air flow (802) out from said air condition arrangement (1) via at least one outlet (804) during inactivity of said cooling media producing heat exchanger loop (10) and to intermittently produce ice in said cooling media (31) by means of said cooling media producing heat exchanger loop (10), wherein said air condition arrangement (1) provided in a, preferably movable, wall shaped housing (11) and passing inlet air (801) into a downwardly extending path (805) of said flow channel (805, 806, 808).

A dehumidifier includes a machine body including a case. The case includes an air inlet, an air outlet, and an air duct communicating the air inlet and the air outlet. The dehumidifier further includes an axial flow fan arranged in the air duct. An air outlet direction of the axial flow fan is configured to face the air outlet. The dehumidifier also includes a compressor arranged inside the case and side by side with the axial flow fan.

A dehumidifier includes a machine body including a case. The case includes an air inlet, an air outlet, and an air duct communicating the air inlet and the air outlet. The dehumidifier further includes an axial flow fan arranged in the air duct. An air outlet direction of the axial flow fan is configured to face the air outlet. The dehumidifier also includes a compressor arranged inside the case and side by side with the axial flow fan.

When a controller determines that a leakage of refrigerant occurs, the controller executes a control of rotating an air-sending fan at high rotation speed. After the control, the controller executes a control of stopping rotation of the air-sending fan or reducing a rotation speed of the air-sending fan in accordance with a result of detection by a first refrigerant sensor provided in a lower portion of a heat exchanger chamber. Thus, the air-sending fan is prevented from continuing the rotation at high rotation speed. Therefore, an indoor unit for an air-conditioning apparatus is excellent in safety and is capable of avoiding feeling of discomfort of a user due to the high-speed rotation of the air-sending fan.

An air conditioner including an arc shaped discharge port formed in a cylindrical member of a housing; a main fan; an arc shaped heat exchanger between the main fan and an inner peripheral surface of the cylindrical member with respect to a radial direction of the cylindrical member; and an auxiliary fan. A discharge flow path is formed between an outer peripheral end of the heat exchanger and the inner peripheral surface of the cylindrical member. A guide flow path is formed outside the discharge flow path with respect to the radial direction of the cylindrical member. The auxiliary fan is in the discharge flow path and is configured to suck some of the air discharged through the discharge port into the guide flow path. The guide flow path returns the air sucked by the auxiliary fan to the auxiliary fan.