Abstract: An energy module determines an amount of energy consumed by an electric heater of a fuel vapor canister since an ignition system of the vehicle was last transitioned from OFF to ON. A purge valve control module controls opening a purge valve while the ignition system of the vehicle is ON, wherein fuel vapor flows from the vapor canister through the purge valve to an air intake system when the purge valve is open. A heater control module selectively applies power to the electric heater of the fuel vapor canister and, based on at least one of the amount of energy consumed by the electric heater and a mass of fuel vapor that has flowed through the purge valve, selectively disconnects the electric heater from the power until after the ignition system is transitioned from ON to OFF.

Abstract: Humid waste air is produced in heated laundry machines. This humid waste air has a still relatively high temperature. In order for the energy contained in the humid waste air to be recovered, at least in part, the humid waste air is directed through a heat exchanger (12). Condensate is produced in the heat exchanger (12), and it has proven difficult, in the case of known heat exchangers (12), for this condensate to be directed away. Moreover, the humid waste air contains accompanying substances, for example fluff from the treated laundry. These accompanying substances are deposited in known heat exchangers (12), which adversely affect the efficiency of the heat exchanger (12) over time. The invention makes provision for the heat exchanger (12) to be equipped with upright heat-exchanger plates (13), from which the condensate can run off. The condensate can then be discharged in a specific manner out of the heat exchanger (12).

Abstract: In order to provide a food transport container, comprising an air circulation device, by which air is taken in from the interior of the food transport container and blown out into the interior of the food transport container, wherein the air circulation device comprises at least one fan, that has a longer maintenance-free operating period and/or a longer useful life, it is proposed that the air circulation device comprises at least one air intake channel, through which the air is taken in by the fan indirectly from the interior of the food transport container.

Abstract: A light fixture (10) is provided having an upper housing (11), a light diffusor (12), a light source (13), and a heating source (14). The housing includes a mounting plate (17) adapted to be mounted to the ceiling of a structure in conventional fashion. The upper housing includes an upper wall, two oppositely disposed side walls (18), a bottom wall (19) spanning the side walls, and an annular airflow ring (21). The bottom wall has a central opening (23) therein. The airflow ring has a plurality of air exhaust holes (24) and a plurality of air intake holes (25). The mounting plate, bottom wall, and two side walls form an air channel (28) in fluid communication with the exhaust holes of the airflow ring. The heat source includes a pair of heating elements (38) mounted within the airflow channel and a motorized fan (39).

Abstract: A heater includes a casing, a heating module, a phase change heat conducting body and a heat absorbing body. A chamber is formed in the casing, and air intake holes and ventilation holes are formed on the casing and interconnected with the chamber. The heating module and the phase change heat conducting body are fixed into the chamber of the casing, and an end of the heat conducting body is attached with the heating module, and another end of the heat conducting body is connected to the heat absorbing body. The heat absorbing body is composed of heat absorbing plates, and an air flow passage is formed between any two heat absorbing plates and installed corresponding to the ventilation hole, so that a hot air flow discharged from the heater can be controlled under a predetermined temperature to improve the safety of using the heater.

Abstract: A portable heater includes a radiator having multiple tubular units and an electric heating element in the radiator for heating the diathermal fluid. A fan positioned above the sealed radiator directs air on the upper portions of the tubular units to enhance convection of the fluid.

Abstract: An air conditioning apparatus includes a heating heat exchanger for heating air blown toward a passenger compartment using hot water as a heating source. A plurality of electric heating members are formed integrally with the heating heat exchanger, and electric power supplied to the electric heating members is controlled according a temperature of the hot water. Therefore, a number of the electric heating members to be operated is finely controlled according to the temperature of water flowing through the heating heat exchanger. Further, when a water temperature of the heating heat exchanger is lower than a predetermined temperature (e.g., 35.degree. C.), a water valve is closed to interrupt the flow of water to the heating heat exchanger, and a blower is operated. Therefore, a quantity of heat transmitted from the electric heating members to the water in the heating heat exchanger can be greatly decreased.

Abstract: A space heater employs a generally Y-shaped housing. A boiler within the housing contains a working fluid at subatmospheric pressure when at ambient temperature. This reduces the boiling point of working fluid. A series of heat exchangers are mounted in the branch portions of the housing and connected to receive working fluid from the boiler. A blower directs ambient air between the heat exchangers and through the front openings of the housing. A valve can be operated to release pressure from within the boiler and heat exchangers. An electric heating element heats the working fluid within the boiler to a temperature above the boiling point under normal operating conditions. During initial manufacture or repair of the unit, the heating element is activated to heat the working fluid while the valve is open, and then deactivated with the valve is closed to allow the working fluid to cool, thereby creating reduced pressure within the boiler.

Abstract: An electric forced circulation space heating system has a first heat exchanger provided with electric heating elements for heating a heat exchange fluid, such as antifreeze or oil, pumped through a closed loop including first flow passages of a second heat exchanger having second flow passages in heat exchange relationship with the first flow passages thereof. A blower forces room air through the second flow passages of the second heat exchanger to be heated by the heated liquid flowing through the first flow passages thereof. A third heat exchanger downstream of the second heat exchanger has first flow passages with an inlet receiving heated air from the second flow passes of the second heat exchanger and an outlet for discharge of the heated air into the space to be heated.

Abstract: An electric heater circuit for an electric heater includes a set of heater coils for generating heat, a normally closed temperature sensitive switch for deactivating the heater coils when the temperature inside the electric heater exceeds a predetermined threshold temperature, a normally closed tilt sensitive switch for deactivating the heater coils in response to tilting movement of the electric heater beyond a predetermined amount relative to a normal upright position, a light and buzzer combination for providing signals when either the temperature sensitive switch is opened as a result of the temperature inside the electric heater exceeding the predetermined threshold temperature or the tilt sensitive switch is opened as a result of tilting movement of the heater beyond the predetermined amount relative to the normal upright position, fan and an adjustable thermostat.

Abstract: A heater which is preferably rated at about 1,500 watts is described. This heater contains at least three separate heat exchangers; each of the heat exchangers contains heat exchanger tubes, and each of the heat exchangers contains a different fluid capacity.A blower passes cold air, in sequence, past the first heat exchanger, then past the second heat exchanger, and then past the third heat exchanger. At the same time, a pump forces a heated heat-exchange medium through the third heat exchanger, through the second heat exchanger, and then through the first heat exchanger.

Abstract: A self-contained heat exchange system (10) is provided wherein the fan (14), pump (18), radiator (30), and motor (16) are disposed within a cylindrical flow path (40) defined by a resilient housing (12). In accordance with a preferred embodiment, the housing (12) comprises a double walled, generally annular fluid reservoir (46). Accordingly, the inside wall (44) of the housing defines the airflow path (40), thereby maximizing heat exchange efficiency per unit volume of heat exchange fluid. Moreover, the annular character of the fluid tank (12) in conjunction with the disposition of the pump (18) within the airflow path (40) defined by the annulus, ensures that the pump (18) is always in a primed condition.

Abstract: A plate heat exchanger designed as a heat tube in the form of a multi-layer expanded partly laminated body has an integrated, fluidically continuous large-surface channel structure. Formed in the vicinity of the outer edge is a condensate-collecting channel which is fluidically connected unobstructedly to the channel structure. A heating bar or a heating channel is arranged near the edge separately but connected heat-conductively. To prevent condensate from flowing off on one side within the condensate-collecting channel as a result of gravity and/or horizontal acceleration and thereby to ensure the best possible heating effect, the condensate-collecting channel is subdivided into condensate pockets by a plurality of flow obstacles.