Abstract: An energy recovery system includes a heating and cooling system having a controller and a furnace or fan coil in fluid communication with each of a return air duct and a supply air duct; and an energy recovery ventilator (ERV) having an intake air duct and an exhaust air duct, the ERV being energized by a direct electrical connection to the heating and cooling system. The return air duct is operable to receive stale conditioned air from a conditioned air space while the controller is configured for controlling the ERV to transfer energy from the stale conditioned air to an outside air stream.

Abstract: A method for adjusting the setpoint temperature of a heat transfer medium circulating in a heating or cooling system (9) inside a building or at least inside a surrounding part of a building. The heating or cooling circuit includes a plurality of heat transferring units, each with a temperature controlled valve. A sum opening degree (OD) of all temperature controlled valves is determined in a time dependent manner and a setpoint temperature Tw,ref of heat transferring medium is controlled according to a predetermined sum opening degree (OD) of all temperature controlled valves. A heating system (9) is provided for supplying heat to a building or a part of the building via a liquid heat transfer medium circulated in a circuit. The heating system (9) includes heat transferring units, each being equipped with a temperature controlled valve. The system is controllable according to the method for adjusting the setpoint temperature.

Abstract: Methods and systems are provided for adjusting a flow of coolant through a coolant system including a rear axle heat exchanger. In one example, a method may include flowing coolant through the coolant system while an engine is not operating. In another example, a method may include increasing a flow of coolant to the rear axle heat exchanger while the engine is not operating when a rear axle oil temperature exceeds a threshold temperature.

Abstract: An air conditioning system includes a heat pump unit including a radiator usable with a refrigerant, a gas furnace unit including a heating section arranged to heat passing air, a blower arranged to generate an air flow that passes through the radiator and the heating section, and a controller configured to control each action of the heat pump unit, the gas furnace unit, and the blower. The controller operates either the heat pump unit or the gas furnace unit as a heat source unit, generates a capacity command used to variably adjust operating capacity of the heat source unit, and executes switch control in order to switch the heat source unit from either one of the heat pump unit or the gas furnace unit to the other when an operating capacity level designated in the capacity command is within a predetermined numerical range for a predetermined time.

Abstract: Maximum evaporating temperature setting values and minimum evaporating temperature setting values in an indoor heat exchanger and a ventilator cooler are determined in accordance with outdoor air temperature and humidity, evaporating temperature setting values in the indoor heat exchanger and the ventilator cooler are set to be between the respective maximum evaporating temperature setting values and the respective minimum evaporating temperature setting values, and evaporating temperatures in the indoor heat exchanger and the ventilator cooler are controlled so as to be the respective evaporating temperature setting values.

Abstract: An air conditioning system of a vehicle including a controller and sensors in communication with the controller. The sensors include an interior temperature sensor for determining the temperature of the vehicle interior and an inner surface temperature sensor for determining the temperature of the inner surface of the vehicle's windshield. The controller determines a dew-point for the vehicle interior based on the sensed interior temperature. The controller adjusts the dew-point or the inner surface temperature based on a correction value, and performs a defogging operation when the temperature of the inner surface of the windshield is less than the dew-point, wherein the dew-point or the inner surface temperature is adjusted.

Abstract: Based on a result of detection taken by the high-low pressure difference detection means (93, 97) for detecting a difference between a high and a low pressure of a refrigeration cycle, an estimate of whether there is leakage of refrigerant in an expansion valve (52) is made. Based on the result detected by the high-low pressure difference detection means (93, 97), a control means (81) sets a reference temperature (T3) to a value corresponding to the degree of refrigerant leakage in the expansion valve (52).

Abstract: A vehicle air conditioner includes an air-conditioning ECU. The air-conditioning ECU performs a cooling mode operation in which air is cooled by an interior heat exchanger in a cooling refrigeration cycle. The air-conditioning ECU performs a heating mode operation, in which air is heated by the interior heat exchanger in a hot gas heater cycle. The air-conditioning ECU performs an air blowing operation in which air is blown toward an inner surface of a windshield of the vehicle without operating the compressor before performing a refrigerant collecting operation.

Abstract: The invention relates to a food cooking installation comprising numerous cooking tanks which are used to receive the food items to be cooked; means of loading/unloading the food items into/from said cooking tanks; and means of conveying, driving and storing liquids, which are used to connect a heated liquid container, a cooled liquid container and a piped water delivery point with the aforementioned cooking tanks. In this way, the tanks can be filled and emptied independently and the food items contained therein can be subjected to successive baths for different periods of time and at different temperatures, at least one of the baths being a cooking bath and the other a cooling bath. According to the Invention, each of the aforementioned cooking tanks comprises at least one lateral opening which is equipped with impervious sealing means and which is used to load/unload the food items using the above-mentioned loading/unloading means.

Abstract: When a switching signal to switch the mode to the defroster mode is generated and the target air volume is smaller than a predetermined air volume ?, the target air volume is automatically increased to the predetermined air volume ?. In doing so, an increase starting point of time of increasing the target air volume is determined according to the blowout mode immediately before a switch signal to switch the mode to the defroster mode is generated.

Abstract: An air conditioner for automotive vehicle use intended to prevent a defrosting operation in an instantaneous foot-defroster mode. The DEF mode in which air mainly from a DEF opening is blown toward the windshield is set by an exclusive front DEF switch. The F/D mode for blowing a substantially equal amount of air to the windshield and the feet of the occupants from the DEF opening and the FOOT opening, respectively, together with the other blow modes (FACE, B/L, FOOT), are sequentially switched for each operation of the blow mode switch in a predetermined sequence. In the case where the F/D mode is selected, the air condition control operation is not performed nor is the blow mode displayed in F/D mode before the lapse of a predetermined length of time (about 1 second). In the case where the blow mode other than F/D mode is desired, therefore, the unrequired control operation in F/D mode is not performed and the instantaneous change is not displayed even though the F/D mode is unavoidably passed-through.

Abstract: When it is assumed that a vehicle is stopped or parked after its engine was stopped and a predetermined period of time has passed, a cold wind side air mixing door, hot wind side air mixing door, cold wind door and rear cold wind side air mixing door are totally closed and a blower is operated for a predetermined period of time. Accordingly, while a cooler is being dried, drying air containing much offensive smell components, which has passed through the cooler, is discharged outside the vehicle. Therefore, it is unnecessary to provide an exclusively used air passage and an opening and closing door for opening and closing the air passage used for composing an air blowing passage to dry the cooler. By utilizing the existing equipment, air used for drying, which has passed through the cooler, containing much offensive smell components can be discharged outside the vehicle.

Abstract: This cleaning system includes a compressor driven by a motor, a condenser; a cooling fan for directing an air stream at the condenser during normal operation, a motor drive system for driving the fan, and a timing device for reversing the rotational direction of the fan motor to direct the stream of cooling air away from the condenser to remove debris collected on the condenser and clean the condenser during a cleaning cycle. The fan is driven by drive system having a solid state commutated motor or a drive system having a reversible permanent split capacitor motor. The timing device includes a timer for controlling the time periods during the normal operation (cooling) cycle and during the cleaning cycle.

Abstract: The present invention provides a heat exchanger unit that can appropriately inhibit freezing of a heat exchange element even in cold climates. The heat exchanger unit performes heat exchange and ventilation between an indoor space and an outdoor space, and is provided with a heat exchange element, a supply air passage and an exhaust air passage that are routed via the heat exchange element, a temperature sensor, and a control unit. The temperature sensor detects the outside air temperature. The control unit executes a first freeze inhibit control mode, which inhibits freezing of the heat exchange element, if the outside air temperature falls below a first level, and a second freeze inhibit control mode, which inhibits freezing of the heat exchange element more strongly than the first freeze inhibit control mode, if the outside air temperature falls below a second level, which is lower than the first level.

Abstract: This cleaning system includes a compressor driven by a motor, a condenser; a cooling fan for directing an air stream at the condenser during normal operation, a motor drive system for driving the fan, and a timing device for reversing the rotational direction of the fan motor to direct the stream of cooling air away from the condenser to remove debris collected on the condenser and clean the condenser during a cleaning cycle. The fan is driven by drive system having a solid state commutated motor or a drive system having a reversible permanent split capacitor motor. The timing device includes a timer for controlling the time periods during the normal operation (cooling) cycle and during the cleaning cycle.

Abstract: Apparatus for recovering heat from a gas flow defines a heat transfer space through which the gas flow can be directed, the heat transfer space having a first region and a second region, a gas inlet and a gas outlet. A first valve arrangement alters the direction of gas flow through the heat transfer space, the first valve arrangement having a first condition in which the first region is upstream of the second region and a second condition in which the second region is upstream of the first region. First and second heat exchangers are disposed in the first and second regions respectively of the heat transfer space. A second valve arrangement connects each heat exchanger selectively either to a first heat transfer medium flow circuit or to a second heat transfer medium flow circuit.

Abstract: The present invention is direct to a system and method for electronically controlling the refrigeration and/or heating of the product storage compartment in a vending machine. The system includes a temperature sensor for sensing the temperature in the product storage compartment, and a door sensor for sensing whether the door is open or closed. The control method includes the steps of activating a defrost mode, which is a timed period with no heating or cooling activity, when the door to the vending apparatus is open. The defrost mode is also activated whenever the cooling element has been running continuously for several hours. Further, the control method includes a step of cycling the cooling element “on” whenever a predetermined high temperature is reached. When the cooling element is “off” for more than 6 hours and the predetermined high temperature has not been reached, the heater is turned “on” to prevent the products in the vending machine from freezing.

Abstract: Apparatus for recovering heat from a gas flow defines a heat transfer space through which the gas flow can be directed, the heat transfer space having a first region and a second region, a gas inlet and a gas outlet. A first valve arrangement alters the direction of gas flow through the heat transfer space, the first valve arrangement having a first condition in which the first region is upstream of the second region and a second condition in which the second region is upstream of the first region. First and second heat exchangers are disposed in the first and second regions respectively of the heat transfer space. A second valve arrangement connects each heat exchanger selectively either to a first heat transfer medium flow circuit or to a second heat transfer medium flow circuit.

Abstract: The present invention is direct to a system and method for electronically controlling the refrigeration and/or heating of the product storage compartment in a vending machine. The system includes a temperature sensor for sensing the temperature in the product storage compartment, and a door sensor for sensing whether the door is open or closed. The control method includes the steps of activating a defrost mode, which is a timed period with no heating or cooling activity, when the door to the vending apparatus is open. The defrost mode is also activated whenever the cooling element has been running continuously for several hours. Further, the control method includes a step of cycling the cooling element “on” whenever a predetermined high temperature is reached. When the cooling element is “off” for more than 6 hours and the predetermined high temperature has not been reached, the heater is turned “on” to prevent the products in the vending machine from freezing.

Abstract: A method and system for controlling a heating, ventilation and air-conditioning (HVAC) system of a vehicle to prevent fogging of a windshield of the automotive vehicle is provided. The method and system include determination of whether the vehicle has been recently turned "on" and preventing the HVAC system from directing air flow toward the windshield for a first predetermined time period after it has been determined that the vehicle has recently been turned "on".

Abstract: A heat exchange apparatus for use in the production of sugar confectionery or for tempering chocolate including a vessel with a tubular heat transfer surface. The vessel defines an inlet and outlet higher than the inlet. Heat exchangers, such as steam jackets and modulating valves are provided for supplying heat to or removing heat from the heat transfer surface. A shaft is located longitudinally along the length of the vessel and is provided with at least one piston. The shaft is reciprocated in the vessel so that the product is agitated and substantially the entire heat transfer surface of the vessel is swept by the piston during each reciprocation cycle.

Abstract: Apparatus for dehumidifying air comprising two cooling coils operable in a first mode for circulating coolant at a temperature above 32.degree. F. and below the dew point of the air through one of the coils and for circulating coolant at a temperature below 32.degree. F. through the other, and operable in a second mode wherein the circulation of coolant is reversed. In one version of the apparatus, shown in FIG. 1, air flows continuously in one direction first through one coil and then the other; in another version of the apparatus, shown in FIG. 3, the direction of air flow is also reversed.

Abstract: A tubular heat exchange systems is disclosed. An outer tube section, though which a first medium passes, also contains inner coils, through which a second medium passes. The first medium can be drawn into the outer tube at each end of the tube using pumps or fan motors. The first medium can be released from the outer tube in a way such that the operator of the system can control both the direction and flow rate of the first medium as it is propelled from the system. The first medium is propelled from the system through various openings along the length of the system. The size of these openings can be adjusted by the user. Heat can be transferred from the first medium into the second medium or from the second medium into the first medium.

Abstract: An air-conditioning apparatus for use in a vehicle includes bypass means for forming a bypass duct to allow the air which has passed through an evaporator to bypass an heater core, opening/closing means for opening and closing the bypass duct, and refrigerant control means for switching between a supply state in which refrigerant is supplied to the evaporator to a stop state in which the supply of the refrigerant to the evaporator is stopped based on a temperature of air having just passed through the evaporator. When it is determined that a physical amount relating to the temperature of the air introduced into a casing is greater than a predetermined amount and when the control state of the refrigerant control means is switched from the stop state to the supply state, the bypass duct is closed for a first predetermined time period by control means with the opening/closing means. In this way, it is possible to prevent the foggy air from being generated.

Abstract: A heat recovery ventilator for use in ventilating a building, the ventilator having a single two-position damper operable such that in one damper position, heat is exchanged between a first flow of fresh air passing through the first path and a second flow of exhaust air passing through the second air path. When placed in the second damper position, fresh air is blocked from entering the ventilator and exhaust air is recirculated, passing through both air paths, and exiting through the fresh air outlet. In this mode of operation, exhaust air is inhibited from exiting through the exhaust outlet due to the relative pressures within the ventilator, thereby inhibiting the formation of a negative pressure within the building.

Abstract: An air conditioner for vehicles can operate at a dehumidifying-operation mode including at least a dry-cooling or a dry-heating mode. The air conditioner comprises a plurality of discharge ports including a defroster discharge port and discharge port switching dampers, a control system for opening at least the defroster discharge port for a predetermined time when the dehumidifying-operation mode is selected, and a control system for opening another discharge port determined in accordance with an operation mode and the like after the predetermined time has elapsed. When the dehumidifying operation is selected, at least the defroster discharge port is opened only for the predetermined time and temperature-conditioned air is discharged to the windshield from the defroster discharge port. After the predetermined time has elapsed, a discharge port in accordance with an operation mode is opened.