Technologies are disclosed herein for a thin heat exchanger through which coolant may be pumped. The heat exchanger may include an envelope and a heat conduction layer provided over the envelope. The envelope may include one or more channels formed therein. The channels formed between the envelope and the conduction layer may extend the length of the heat exchange layer and be configured to carry coolant therethrough. The heat exchange layer may include an inlet manifold on a first end and an outlet manifold on another end opposing the first end. The inlet manifold may allow the flow of coolant into the heat exchange layer and the outlet manifold may allow the removal of the coolant from the heat exchange layer. Coolant flow may be controlled by a suction pump operating under computer control based at least in part on sensor data.

A water cooling and heating system for swimming pools and hot tubs for heating and/or cooling a flow of water drawn from a body of water and then returning the heated and/or cooled flow of water back to the body of water wherein the system includes an inner conduit within an outer conduit, the outer conduit having an exterior conduit surface that is exposed to solar energy from the sun whereby a portion of the solar energy absorbed by the outer conduit is transferred to and heats an outer water flow within the outer conduit and the outer water flow in the outer conduit heating an inner water flow of water in the inner conduit, the system further including at least one control valve to selectively control a flow of water to the inner and outer conduits and a bypass flow of water that is directed back toward the body of water.

The invention discloses an efficient solar flat plate heat absorption system, composed of a primary circulating pipe network, a secondary circulating pipe network and a control system, wherein the primary circulating pipe network is formed by communicating a pipeline in a pressure bearing water tank with a heat exchange tube I in a flat plate heat collector group through a pipeline I and a pipeline III, the secondary circulating pipe network is formed by communicating a pipe network at the bottom of a swimming pool with a heat exchange tube II in the flat plate heat collector group through a pipeline II and a pipeline IV, wherein thermometers are arranged at a water outlet of the heat exchange tube I, at the water outlet of the heat exchange tube II, in the swimming pool and in the pressure bearing water tank, and circulating pumps are arranged on the pipeline I and the pipeline II. The invention makes full use of the heat energy by using the two circulating pipe networks formed by the parallel double heat exchange tubes in the flat plate heat collector group to realize the automatic and constant-temperature heating of the water in a swimming pool and avoid the water temperature in the swimming pool fluctuating suddenly, meanwhile the redundant heat can be recycled, thereby making full use of energy, saving resources and having obvious social and economic benefits.

A combination fence and solar heater. The fence for enclosing a swimming pool and heating water from the swimming pool in order to provide more comfortable swimming conditions and a longer swimming season. The fence includes posts, upper and lower rails, and pickets. The rails include first and second conduits, each having a passageway for carrying water being circulated in communication with the swimming pool. The first conduit has an exterior surface that is exposed to the sun; absorbing solar energy which heats the stream of water therein. The second conduit is nested within the first conduit and absorbs a portion of the energy absorbed by the first conduit. Often, water temperatures within the first and second conduits differ from each other, allowing for discharge of heated water over a range of temperatures to the swimming pool.

The invention relates to a floating structure comprising pontoons (P) that are interconnected so as to form at least one closed floating frame of any geometrical shape, which is fixed to means for stabilising and anchoring in relation to a body of water, the at least one frame (n) being secured to a sealed pocket (1) to be filled with water in order to allow the movement of at least one person, said pocket (1) being fixed to a filtering system (2). The walls of the pocket (1) are provided with flexible thread-like elements (6) that have elastic means (7) for coupling both to a framework (8) that has been secured to the at least one frame and is designed to be submerged in the body of water, and also to a part of the underneath face of the pontoons (P).

A heat exchange assembly for heating a pool includes a housing that defines an internal space. The housing has a top that is open. A lid, which is complementary to the top and substantially transparent, is sealably couplable to the housing to cover the top. A tube is loopedly positioned in the internal space. The tube has opposing endpoints that are positioned through the housing. Each of a pair of couplers is coupled singly to the endpoints of the tube. The lid is configured to allow sunlight to pass through the lid into the internal space, wherein the internal space is heated relative to the ambient environment. The tube is configured to transfer heat from the internal space to liquid passing through the tube. The couplers are configured to couple the tube to a reservoir of liquid, such as a pool.

A portable solar powered pool heater comprising a housing, a hose, a controller, a solar panel and at least one leg having a first position for supporting the housing above a surface, and a second position disposed inside of the housing. This heater can include a hinge, wherein the leg comprises a leg that is coupled to the housing via the hinge. In one embodiment the leg comprises a telescoping leg having a first leg, and a second leg wherein said second leg is telescoping inside of the first leg.

A heating system is described that uses solar thermal technology in the heating cycle using the compression principle to reduce the electrical consumption of the compressors, thereby increasing the efficiency of systems being used for heating with an increased refrigerant flow. Thermal energy provided from solar thermal energy collectors may be used. The rate of efficiency of the total heating system depends heavily on the size and construction of the heat exchanger array and the pipework to and from these heat exchangers. The system uses proper dimensioning, components in the pipework, and logic groups with sensors and actuators attached in that pipework to increase energy efficiency.

A pool system may include a solar heating system for heating water of a swimming pool or spa comprising. The solar heating system includes a collector which may receive water from the swimming pool or spa and heat a flow of water from the swimming pool or spa using solar radiation. The solar heating system includes one or more control devices, which may control a flow rate of water through the solar heating system and/or a pressure of water through the solar heating system.