Abstract: The invention relates to a refrigeration method and equipment for cooling the inside of a container, or a coolant circulating in a refrigeration circuit of a vehicle and/or of a supercharger, which uses an air current as a working fluid and comprises the steps of: compressing; cooling in coolers coupled to an ejection cycle; expanding, to reduce the temperature of the air current and obtain mechanical energy from same; refrigerating, to allow an exchange of thermal energy between the air current resulting from the expansion step and the coolant of the refrigeration circuit or the inside of the container; and regenerating, to allow an exchange of thermal energy between the air current resulting from the compression step, reducing the temperature thereof, and the air current resulting from the regenerating step, increasing the temperature thereof.

Abstract: Electrical resistances to carry out heating of air necessary for the combustion process of an engine, each of said resistance being in continuous tape form, with a pronounced coiled trajectory so that the resistance is distributed uniformly in an orifice for the passage of air established in a support and has its larger faces located in imaginary planes parallel to the axis of said orifice so that the electrical resistance presents its front rim to the passage of the air with a minimum loss of head, while presenting a wide contact surface to the air. The resistance is fastened to the support in arched recesses defined in diametrically opposed areas of said support, with the interposition of respective ceramic insulators being connected to ground by one of its ends and by its other end to the electricity supply cable.

Abstract: Electrical resistances to carry out heating of air necessary for the combustion process of an engine, each of said resistance being in continuous tape form, with a pronounced coiled trajectory so that the resistance is distributed uniformly in an orifice for the passage of air established in a support and has its larger faces located in imaginary planes parallel to the axis of said orifice so that the electrical resistance presents its front rim to the passage of the air with a minimum loss of head, while presenting a wide contact surface to the air. The resistance is fastened to the support in arched recesses defined in diametrically opposed areas of said support, with the interposition of respective ceramic insulators being connected to ground by one of its ends and by its other end to the electricity supply cable.