Abstract: A heating system includes a refrigerant boiler including a heat source for heating a refrigerant from a liquid state to a vapor state, a boiler outlet and a boiler inlet; a heat exchanger in fluid communication with the refrigerant boiler, the heat exchanger including a upper manifold having a heat exchanger inlet coupled to the boiler outlet, a lower manifold having a heat exchanger outlet coupled to the boiler inlet and a plurality of tubes connecting the upper manifold and the lower manifold, wherein refrigerant passes from the upper manifold to the lower manifold via gravity; and a fan moving air over the heat exchanger to define supply air for a space to be heated.

Abstract: In order to solve the numerous problems with existing steam, vacuum, and hot water heating systems, presented are novel systems and methods of vapor vacuum heating having several improvements over the prior art, including: condensate return which can operate without steam traps; naturally-induced vacuum; improved vacuum pump operation for sustaining vacuum in such systems; liquid lift apparatus for use with such systems; and other improvements. All innovations presented herein make vapor vacuum heating more efficient and economical for industrial, commercial, and home applications. A field test conducted with these innovations show results of about 26-50% reduced energy usage, implying significant energy savings from the use of the present invention over current heating systems.

Abstract: A tubular section bar (100) for a biphasic?radiator comprising a tubular body (10) having a perimeter surface, a surface lug (11-21) protruding from at least one portion of said perimeter surface; each lug is perpendicular to the perimeter surface and has a height (H); two consecutive lugs are arranged at a reciprocal distance (D) and so that the relation between the reciprocal distance (D) and height (H) is greater or equal to 1.4 (D:H?1,4).

Abstract: One embodiment of the present invention is a boiler for boiling water to produce steam, having (1) an evaporating section comprising (a) a combustion chamber for burning fuel with air and generating hot flue gas, (b) an evaporating heat exchanger around the combustion chamber for exchanging heat between the flue gas and water to produce the steam which exits the boiler; and (2) a condensing section comprising (c) a condensing heat exchanger for exchanging heat between the hot flue gas from the combustion chamber and a low-temperature water return having a temperature below approximately 100° F., generating flue gas condensate, which leaves the boiler, wherein the low-temperature water return is heated by the hot flue gas in the condensing heat exchanger before entering the evaporating heat exchanger for additional heating. The disclosed vacuum condensing boilers make vapor vacuum steam more efficient and economical for industrial, commercial, and home applications.

Abstract: In order to solve the numerous problems with existing steam, vacuum, and hot water heating systems, first presented is a novel system and method for a vapor vacuum system having low temperature condensate return which can operate without steam traps in both single-pipe and dual-pipe configurations. Secondly is disclosed systems and methods for integrating the disclosed vapor vacuum system with a condensing boiler. Thirdly is presented several systems and method of operating radiators having low temperature condensate return with the disclosed vapor vacuum system. Finally is presented condensing vacuum boiler designs that can be utilized with the disclosed vapor vacuum system. Also presented are embodiments having naturally-induced vacuum and utilizing district heat as well as combined heat and power. All innovations presented herein make vapor vacuum steam more efficient and economical for industrial, commercial, and home applications.

Abstract: Structural wall panels and methods and systems for controlling the interior temperature of a building are provided. The structural wall panels advantageously include a fluid conduit disposed within an interior concrete layer of the structural wall panel where the conduit is adapted to convey a thermal transfer fluid through the interior concrete layer. A thermal insulation layer is provided between the first concrete layer and a second concrete layer, which can be disposed on an exterior surface of the wall. The thermal transfer fluid can be heated and/or cooled to regulate the temperature of the interior concrete layer and thereby control the temperature of the interior of the building. The first concrete layer can have a high thermal mass to increase the efficiency of the system.

Abstract: A low-pressure energy system is provided that includes a combustion chamber immersed in water within an insulated container. Low-pressure air flow is introduced into one end of the combustion chamber. Fuel, sparks and water are also introduced to the combustion chamber, thereby generating steam and heat. The steam is blown through the combustion chamber to a first radiator, which emits heat and a steam exhaust, which can be used to increase the humidity of the enclosure housing the energy system. The heat generated by the combustion chamber heats the water in the insulated container. The heated water is pumped through a second radiator, thereby extracting additional heat from the system. A fan may be configured to introduce air flow over both the first and second radiators, thereby further improving heat transfer to the ambient air. Water can optionally be omitted from the combustion chamber.

Abstract: In a method for the regulated transfer of heat from a primary steam network to a heat consumer, the supply flow of which is at a predetermined overpressure and the return flow of which is at a relatively lower pressure, the steam withdrawn from the steam network in accordance with the heat consumption on the part of the consumer is cooled down to the point of condensation by the withdrawal of heat by means of a secondary medium, while a predetermined overpressure relative to the supply pressure of the heat consumer is maintained. The overpressure in a jet pump is then reduced to the supply pressure of the heat consumer, generating a corresponding driving force for the supply flow, and secondary medium heated up in the course of the cooling down of the steam is mixed with the supply flow.