A solar photovoltaic (PV) water heating system includes a tank including at least a first heating unit having at least first and second heating elements, at least one of which is switchable; a PV solar collector; an inverter adapted to convert the output from the PV collector to an alternating power supply; a modulator to modulate the alternating power supply from the inverter; a controller adapted to control the modulator and the switching of the or each switchable heating element; wherein the controller is adapted to control the modulator and the switchable heating elements to maximize the energy drawn from the PV collector.

Methods of preparing a proteoliposome comprise the step of contacting a liposome with an effective portion of RalBP1 to create a proteoliposome. RalBP1 is effective for the protection and treatment of mammals and the environment against the accumulation of toxic compounds, and prevents accumulation of one or more toxic compounds, reduces the concentration of toxic compounds, and protects against further contamination with one or more toxic compounds. In addition, RalBP1 is effective for the protection and treatment of mammals against the effects of ionizing radiation.

A solar photovoltaic (PV) water heating system includes a tank (1.020) including at least a first heating unit (1.016) having at least first and second heating elements (1.016.1 . . . 1.016.x), at least one of which is switchable (1.014.1A . . . 1.014.1m); a PV solar collector (1.002); an inverter (1.004) adapted to convert the output from the PV collector to an alternating power supply; a modulator (1.060) to modulate the alternating power supply from the inverter; a controller (1.040) adapted to control the modulator and the switching of the or each switchable heating element; wherein the controller is adapted to control the modulator and the switchable heating elements to maximize the energy drawn from the PC collector.

The invention relates to a system for producing hot water, comprising a hot water reservoir, a first and a second resistance heating rod for heating the water in the hot water reservoir, a reservoir temperature sensor, and a control unit, by means of which the first resistance heating rod can be connected to a network alternating voltage source, wherein the system comprises a photovoltaic device for producing a direct voltage and the photovoltaic device can be connected to the second resistance heating rod by means of the control unit or a further control unit.

A pump system for use with a solar collector system which is used to heat a heat transfer fluid, includes a storage tank and the pump system having a first and second pump arranged in parallel which can pump the heat transfer fluid from the storage tank to a solar collector, so that should one pump fail the other pump can function, wherein the outlet of the first pump and the outlet of the second pump are connected to a valve arrangement, whereby when the first pump operates the outlet of the second pump is substantially closed by the flow from the first pump and when the second pump operates the outlet of the first pump is substantially closed by the flow from the second pump.

Our invention consists of two separate and discrete families of polymers, e.g. thermosetting Fiberglass Reinforced Plastics (FRP) and thermoplastics. Both are used as the materials of construction to fabricate solar thermal collectors. These families have the same general configuration and are based upon the same principles. Both families are used in a form that some of the walls of the collector are translucent. Both families incorporate a passage through which the thermal fluid flows. Both families make use of dyes to absorb energy from the sun in the fluid and the collector walls. Each of the families makes use of improved collector configurations and designs and special operating approaches. Each family can serve different markets for different solar thermal collectors. In particular, FRP stands alone as an emerging new category of materials for a broad range of applications including everything from novel solar thermal collectors to exotic airplanes.

A method and a control system for a hot water supply system, wherein the hot water supply system includes at least one boiler having a heating fluid input pipe line, the control system comprising: a motorized valve; installed upon the heating fluid input pipe line; a first thermistor installed upon the heating fluid input pipe line; a second thermistor installed within the boiler; a motor mechanically connected to the motorized valve; and a controller, wherein the controller is adapted for opening and closing the motorized valve according to temperature difference between a temperature measurement by the first thermistor and a temperature measurement by the second thermistor, wherein the controller is electrically connected to the motor, to the first thermistor, and to the second thermistor.

Methods of preparing a proteoliposorne comprise the step of contacting a liposome with an effective portion of RalBP1 to create a proteoliposorne. RalBP1 is effective for the protection and treatment of mammals and the environment against the accumulation of toxic compounds, and prevents accumulation of one or more toxic compounds, reduces the concentration of toxic compounds, and protects against further contamination with one or more toxic compounds. In addition, RalBP1 is effective for the protection and treatment of mammals against the effects of ionizing radiation.

A water heating system includes a first water heater having a first heating source of a first type, and a second water heater having a second heating source of a second type. The system further includes a valve having a first interface connected to the cold water source, a second interface connected to the first cold water inlet of the first water heater, a third interface connected to a second hot water outlet of the second water heater, and a fourth interface connected to the first hot water outlet of the first water heater. A motor positions the valve to one of at least three positions Finally, the system also includes a control circuit including a temperature sensor near the first hot water outlet of the first water heater, and a controller configured to control the motor based on a sensed temperature by the temperature sensor.

A diffuser plate for diffusing a fluid flow in a fluid storage vessel, comprising: a plate having a plurality of holes for the fluid flow to pass through; and at least one wall that extends away from a surface of the plate.