A window fan is provided that includes a fan housing and chamber assembly. The fan housing includes a front panel with an air outlet and a rear panel with an air inlet and defines a central chamber. The chamber assembly is positioned within the central chamber of the fan housing and includes a cylindrical fan rotatably mounted within the chamber and driven by a fan motor. An air duct assembly is rotatably mounted within the chamber having an air duct panel that is moveable from an open to closed position such that the air duct panel, when in the closed position blocks the airflow through the window fan and permits air flow through the window fan when in the open position. The fan of the window fan assembly may be a cross flow blower fan.

A dual window fan having a rectangular body adapted to engage a window, two fan heads pivotably engaging the body independently of each other about a vertical pivot axis from aiming directly outwardly normal to the body to aiming inwardly through a pivot angle of at least 225 angular degrees.

A dual window fan having a rectangular body adapted to engage a window, two fan heads pivotably engaging the body independently of each other about a vertical pivot axis from aiming directly outwardly normal to the body to aiming inwardly through a pivot angle of at least 225 angular degrees.

A heat exchanger for heat exchange between at least two fluids includes a plurality of heat exchange elements each having at least one fluid-guiding path for conducting at least one of the fluids through. The heat exchanger has a cylindrical shape or substantially cylindrical shape with a cylinder axis around which the heat exchange elements are adjacently arranged. At lease a region of each of the heat exchange elements forms an outline structure at least substantially like one of a triangular cylinder, a trapezoidal cylinder, a circle-sector cylinder, and an annulus-sector cylinder. As a result of adjacent arrangement of the heat exchange elements, the heat exchanger or at least a region of the heat exchanger has an outline structure at least substantially like one of a polygonal cylinder, a polygonal hollow cylinder, a circular cylinder, and annular cylinder. The cylindrical shape of the heat exchanger may alternatively be a cone frustum. The heat exchanger may be incorporated into an air device.

A heat exchanger for heat exchange between at least two fluids includes a plurality of heat exchange elements each having at least one fluid-guiding path for conducting at least one of the fluids through. The heat exchanger has a cylindrical shape or substantially cylindrical shape with a cylinder axis around which the heat exchange elements are adjacently arranged. At lease a region of each of the heat exchange elements forms an outline structure at least substantially like one of a triangular cylinder, a trapezoidal cylinder, a circle-sector cylinder, and an annulus-sector cylinder. As a result of adjacent arrangement of the heat exchange elements, the heat exchanger or at least a region of the heat exchanger has an outline structure at least substantially like one of a polygonal cylinder, a polygonal hollow cylinder, a circular cylinder, and annular cylinder. The cylindrical shape of the heat exchanger may alternatively be a cone frustum. The heat exchanger may be incorporated into an air device.

The present invention relates to an air-conditioning device comprising: a case having an interior divided into a first area and a second area, having an indoor inlet and an indoor outlet formed therein such that the first area and an indoor space communicate with each other, and having an outdoor inlet and an outdoor outlet formed therein such that the second area and an outdoor space communicate with each other; a barrier arranged between the first area and the second area inside the case; an indoor blowing fan arranged in the first area so as to form a flow of air from the indoor inlet to the indoor outlet; an outdoor blowing fan arranged in the second area so as to form a flow of air from the outdoor inlet to the outdoor outlet; a first thermoelectric element comprising a first indoor heat exchanger arranged in the first area so as to exchange heat with air passing through the first area, and a first outdoor heat exchanger arranged in the second area so as to exchange heat with air passing through the second area; a case lower-surface formed on the lower surface of the case so as to have an open upper side such that condensed water generated from the first thermoelectric element is collected; and a second thermoelectric element arranged between the first thermoelectric element and the case lower-surface so as to heat the condensed water. The first area and the second area are connected between the case lower-surface and the second thermoelectric element such that the condensed water is distributed across the first area and the second area. The present invention is advantageous in that indoor cooling/heating can be performed without no separate compressor, outdoor unit, and the like, and condensed water can be effectively evaporated.

The present invention relates to an air-conditioning device comprising: a case having an interior divided into a first area and a second area, having an indoor inlet and an indoor outlet formed therein such that the first area and an indoor space communicate with each other, and having an outdoor inlet and an outdoor outlet formed therein such that the second area and an outdoor space communicate with each other; a barrier arranged between the first area and the second area inside the case; an indoor blowing fan arranged in the first area so as to form a flow of air from the indoor inlet to the indoor outlet; an outdoor blowing fan arranged in the second area so as to form a flow of air from the outdoor inlet to the outdoor outlet; a first thermoelectric element comprising a first indoor heat exchanger arranged in the first area so as to exchange heat with air passing through the first area, and a first outdoor heat exchanger arranged in the second area so as to exchange heat with air passing through the second area; a case lower-surface formed on the lower surface of the case so as to have an open upper side such that condensed water generated from the first thermoelectric element is collected; and a second thermoelectric element arranged between the first thermoelectric element and the case lower-surface so as to heat the condensed water. The first area and the second area are connected between the case lower-surface and the second thermoelectric element such that the condensed water is distributed across the first area and the second area. The present invention is advantageous in that indoor cooling/heating can be performed without no separate compressor, outdoor unit, and the like, and condensed water can be effectively evaporated.

The smart window for the smart home and smart grid can harvest energy and supply power to the home, grid and window itself. The smart window for the smart home and smart grid has all the Electrochromic panel, Solar panel and Multimedia panel been the same full window wide view and aligned with each other in IGU. To be a home automation system, the smart window has local/remote access/control capabilities. There are several types of smart windows working as master device or slave device. The operation of smart window automation system has three modes, normal/open mode, shut/tint mode and smart phone mode. The tube of air circulation system is hidden inside the frame surrounding IGU. Most of the electronic components are integrated to be FPSOC Field Programmable System On Chip that all the electronic component is hidden in the frame surrounding IGU, too. Therefore, the smart window doesn't have any blockage of window view with the Solar panel, Electrochromic panel, Multimedia panel and air circulation system. The smart window has the clean outlook as the conventional dual panel IGU does. The master device of the smart window system is similar to the huge screen working as a smart phone. In normal/open mode, the smart window is similar to the conventional dual panel window having the full-panel clean and clear view. For the different architectures of the smart homes, the smart window must have versatile alignments and system control that the smart window has to be implemented with the Field Programmable System On Chips of Anlinx, Milinx and Zilinx made of the W5RS advanced FPSOC chip technologies.

Disclosed are methods for at least approximating any one or any combination of system targets of a) reducing the average energy expenditure for keeping at least one primary compartment of a building within a desired temperature range by means of active

e air conditioning, or b) reducing temperature variations during a typical 24-hour cycle within said at least one primary compartment of said building, or c) reducing one or both of the average temperature or the peak temperature of said at least one primary compartment of said building.

The invention concerns predominantly enclosed spaces, typically buildings, which are at least exposed to directionally and temporally varying levels of solar electromagnetic radiation as well as temporally varying levels of ambient air temperature and ambient air flow velocity and direction. Such a building comprising at least one primary compartment and at least one secondary compartment, and wherein said primary compartment predominantly serves to achieve the primary purpose of the building.

The disclosed methods are furthermore at least in part based on at least one electronic controller, which is able to one or both of a) controlling means to modulate the amount of passive air flow to and from said at least one secondary compartment, and b) controlling means to modulate the amount of actively driven air flow to and from said at least one secondary compartment, and said electronic controller furthermore comprising at least one, at least partially descriptive, analytical and/or, numerical, and/or reduced order model to at least approximately compute, i.e. predict, the thermal behavior of said building, and said controller using said at least partially descriptive model to derive control signals suitable to at least approximate said at least one system target. In some embodiments the disclosed methods are at least partially incorporated in a home automation system, including optionally internet connectivity.

In some embodiments the disclosed methods are at least partially capable of increasing the typical lifetime of some components of buildings and thus reducing resources associated with maintaining at least some buildings functional.

Disclosed are methods for at least approximating any one or any combination of system targets of a) reducing the average energy expenditure for keeping at least one primary compartment of a building within a desired temperature range by means of active

e air conditioning, or b) reducing temperature variations during a typical 24-hour cycle within said at least one primary compartment of said building, or c) reducing one or both of the average temperature or the peak temperature of said at least one primary compartment of said building.

The invention concerns predominantly enclosed spaces, typically buildings, which are at least exposed to directionally and temporally varying levels of solar electromagnetic radiation as well as temporally varying levels of ambient air temperature and ambient air flow velocity and direction. Such a building comprising at least one primary compartment and at least one secondary compartment, and wherein said primary compartment predominantly serves to achieve the primary purpose of the building.

The disclosed methods are furthermore at least in part based on at least one electronic controller, which is able to one or both of a) controlling means to modulate the amount of passive air flow to and from said at least one secondary compartment, and b) controlling means to modulate the amount of actively driven air flow to and from said at least one secondary compartment, and said electronic controller furthermore comprising at least one, at least partially descriptive, analytical and/or, numerical, and/or reduced order model to at least approximately compute, i.e. predict, the thermal behavior of said building, and said controller using said at least partially descriptive model to derive control signals suitable to at least approximate said at least one system target. In some embodiments the disclosed methods are at least partially incorporated in a home automation system, including optionally internet connectivity.

In some embodiments the disclosed methods are at least partially capable of increasing the typical lifetime of some components of buildings and thus reducing resources associated with maintaining at least some buildings functional.