An air-cooling mechanism. An electric fan has a fan motor and fan blades. A front grill covers the fan blades. A removably attached ice pack holder holds an ice pack. The ice pack holder has an ice pack holder grill and attachment brackets. The ice pack holder also includes a holding mechanism for receiving and holding the ice pack. Connection straps are used to connect the attachment brackets to the electric fan's front grill. In a preferred embodiment the connection straps are Velcro® straps. In a preferred embodiment, the ice pack includes ice pack holes for allowing air flow.

An architectural structure having: a wall of a room of the architectural structure; and a panel integrated into the wall, wherein the panel includes thermoelectric components (TECs) arranged as a TEC grid, thereby defining a radiant panel, wherein: the TECs, of the TEC grid, are thermally coupled to a common heat sink formed in part by an exterior surface of the wall; and the wall defines a wall surface area, the panel defines a panel surface area, and the panel surface area is between 5% and 20% of the wall surface area.

An air conditioning apparatus includes an outdoor unit configured to circulate refrigerant, an indoor unit configured to circulate water, and a heat exchange device that connects the indoor unit to the outdoor unit and that is configured to perform heat exchange between the refrigerant and the water. The heat exchange device includes a first heat exchanger and a second heat exchanger, a first refrigerant pipe and a second refrigerant pipe that are connected to the first heat exchanger, a third refrigerant pipe and a fourth refrigerant pipe that are connected to the second heat exchanger, a first expansion valve disposed at the second refrigerant pipe, a second expansion valve disposed at the fourth refrigerant pipe, a bypass pipe that connects the second refrigerant pipe to the third refrigerant pipe, and a bypass valve disposed at the bypass pipe.

A combined cooling and heating system including a district cooling grid having a feed conduit for an incoming flow of cooling fluid having a first temperature, and a return conduit for a return flow of cooling fluid having a second temperature, the second temperature being higher than the first temperature; a local cooling system being configured to absorb heat from a first building and comprising a heat exchanger having a heat exchanger inlet and a heat exchanger outlet; and a local heating system being configured to heat the first or a second building and comprising a heat pump having a heat pump inlet and a heat pump outlet. The heat exchanger inlet is connected to the feed conduit of the district cooling grid; and the heat pump inlet is connected to the return conduit of the district cooling grid and to the heat exchanger outlet.

The present invention provides a phase change cold storage device having vortex coiled tubes, which falls within the technical field of low temperatures and comprises an inlet tube, an outlet tube, a tube plate, a baffle plate, vortex coiled tubes, a cylinder body, a central tube, a support frame, a seal head and a saddle, wherein the tube plate is fixedly connected to the cylinder body, a lower end position and a central position of the tube plate are respectively perforated, the inlet tube and the outlet tube are respectively connected to a lower end position and a central position of the tube plate, the baffle plate and the vortex coiled tubes are mounted on the central tube, one end of the central tube is fixed on the tube plate, and the other end is inserted through the support frame connected to the cylinder body, the head is connected to the cylinder, provided on the opposite side of the inlet and outlet tubes, and the saddle is provided below the cylinder. The present invention has a compact structure, is easy to manufacture, and easily enhances heat transfer with vortex coiled tubes, and at the same time, has a good cold storage effect and a wide application range.

Passive cooling article (120) includes a plurality of first elements (122) defining a high absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range and a plurality of second elements (124) defining a low absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range, wherein the plurality of first (122) and second (124) elements are interspersed to form a major structure having a first major surface (130) comprising the first element outer surfaces (126) and the second element outer surfaces (128), wherein the first element outer surfaces (126) face a first direction toward a first end region (136) of the major structure (130) and the second element outer surfaces (128) face a second direction toward a second end region (136) of the major structure. The article (120) may be applied to a substrate (104), for example, on a generally vertical surface of a vehicle or stationary structure.

A hydronic system includes a partition, a first conduit embedded in a first side of the partition, a second conduit embedded in a second side of the partition, a first sheet of finishing material covering the first conduit, a second sheet of finishing material covering the second conduit, and at least one valve and at least one pump. The at least one valve and at least one pump are configured to control a flow of a fluid inside the first conduit and the second conduit. When the hydronic system is operating in an isolating mode, the fluid flows in a first closed loop through the first conduit and the fluid flows in a second closed loop through the second conduit. When the hydronic system is operating in a heat exchange mode, the fluid flows between the first conduit and the second conduit in a third closed loop.

A solar powered absorption cooling system employing refrigerant-absorbent solutions such as water and lithium bromide and hybrid storage capabilities, and a method of employing the system in refrigeration and air conditioning units. The system includes a first temperature control valve and second temperature control valve that together regulate the flow of solar heating fluid into the generator and substantially reduce absorbent crystal formation.

A self-sustained, submerged waterborne data center facility that utilizes a closed-looped heat management system that is both energy-efficient and cost-effective is disclosed. Embodiments employ a closed-looped, energy efficient, cost effective thermal management system that leverages natural resources to control thermal conditions and reduce the overall requirement for cooling power.

An air conditioner includes: an outdoor unit; a plurality of indoor units respectively including indoor heat exchangers; expansion valves respectively provided to the plurality of indoor units, the expansion valves being configured to adjust flow rates of a refrigerant in the indoor heat exchangers; and a controller for executing a refrigerant amount balance control for adjusting opening degrees of the expansion valves so that operation state amounts, with which the indoor heat exchangers exert heat exchange amounts, of the plurality of indoor units become equal to each other.