Abstract: A transportation trailer having a moving floor including a plurality of reciprocating slats for loading/unloading materials into the trailer. The trailer includes a system for warming the moving floor when the materials transported in the trailer freeze on the slats in cold weather. Using the pre-existing hollow structure of the slats, a stream of hot fluid or a hot fluid pipe is run inside the slats for thawing the frozen materials for unloading the trailer. The hot fluid may be provided from a hot fluid source on board of the trailer, for thawing the frozen materials while the trailer is on its way to the unloading site, or may be provided separately at the unloading site.

Abstract: The invention provides a method and a system for controlling floor heating or climate regulating systems with long time constants. According to the invention, a flow of a fluid is provided through the floor or through a similar medium with large thermal inertia. An induced heat is determined by adding up a plurality of differences between an inlet temperature of the fluid when it enters the medium and an outlet temperature of the fluid when it leaves the medium. The temperatures are sampled with a fixed sampling time and within a fixed period of time, and a corresponding change in temperature of the medium over the fixed period of time is determined. In the future, the temperature of that medium is controlled by use of a ratio between the induced heat and the change in temperature.

Abstract: A method controls an air handler that generates heated air from hot water generated by a water heater. The method includes generating a signal in the presence or absence of an indicia of water flow associated with the water heater; initiating operation of a pump associated with the air handler when the signal indicates that water flow associated with the water heater is at least at a selected level to supply hot water to the air handler sufficient to generate heated air; and/or terminating operation of the pump and/or a blower/fan associated with the air handler when the presence or absence signal indicates that the water flow associated with the water heater is less than the selected level.

Abstract: Disclosed is a hot water circulation system associated with a heat pump and a method for controlling the same. The present invention allows the system to be defrosted while hot water supply or a heating operation is performed, making it possible to improve a phenomenon that heating efficiency is deteriorated.

Abstract: An air system assembly for a vehicle includes a carpet module and an HVAC unit above the carpet module. A floor aircap assembly is associated with the carpet module and has a vertical portion extending upwardly above the carpet module and a horizontal portion extending below the carpet module.

Abstract: Thermodynamic cycles with diluent that produce mechanical power, electrical power, and/or fluid streams for heating and/or cooling are described. Systems contain a combustion system producing an energetic fluid by combusting fuel with oxidant. Thermal diluent is preferably used in the cycle to improve performance, including one or more of power, efficiency, economics, emissions, dynamic and off-peak load performance, temperature regulation, and/or cooling heated components. Cycles include a heat recovery system and preferably recover and recycle thermal diluent from expanded energetic fluid to improve cycle thermodynamic efficiency and reduce energy conversion costs. Cycles preferably include controls for temperatures, pressures, and flow rates within a combined heat and power (CHP) system, and controls for power, thermal output, efficiency, and/or emissions.

Abstract: A climate control duct architecture having partitions to provide effective distribution of air immediately as it exits the HVAC. By strategic positioning and configuring of the partitions the duct architecture may be tuned to provide maximum console airflow and desired system airflow distribution with a minimum amount of interference to the airflow due to turbulence.

Abstract: In a system wherein a fossil fuel fired burner heats incoming well or municipally supplied water to a temperature required for industrial concrete production, the exhaust gases produced by the burner are utilized to preheat the incoming water to an increased temperature before the water is put into an insulated tank where the burner subsequently raises the water temperature to the required level, to thereby reduce the load on the burner and increase the efficiency of directly fired water heating systems.

Abstract: Provided is a storage apparatus that uses a generally-used housing and allows storage devices mounted from two sides of the housing, in which a cooling device is provided in front of the storage devices and the cooling device is configured to be movable so as to open the front side of the storage devices so that maintenance and replacement of a storage device(s) can be performed from the two sides of the housing.

Abstract: When an economy switch signal is ON to instruct that fuel economy should be given priority, a blower of an air conditioning device is operated using a blower characteristic map for fuel economy so that a blower level of the air conditioning device is changed with respect to the change in an engine coolant temperature at a low rate. Also, it is determined whether an engine needs to be operated or stopped using an engine operation map for fuel economy so that the engine is likely to be stopped.

Abstract: An HVAC (heating, ventilating and air conditioning) damper includes a series of pivotal damper blades that are opened by an air pressure differential across opposite sides of the damper. In some embodiments, a fan discharging against the damper blades provides the necessary air pressure to open the damper. To control how far the damper opens, an actuator moves a variable position abutment that obstructs the damper blades to limit how far they can pivot in the open direction. The position of the abutment is infinitely adjustable to provide the damper with infinite adjustment over a range of open positions. In some embodiments, the abutment applies a unidirectional torque to the damper blades regardless of whether the damper is opening or closing.

Abstract: An air-conditioner ECU sets the maximum flowrate or a set flowrate which is less than the maximum flowrate as a required flowrate Vr based on outside air temperature when a DEF mode is selected, and requires that coolant be circulated (steps 100 to 110). Also, when the coolant temperature Tw during heating is between a set temperature TS3 and a set temperature TS1, circulation of coolant at the minimum flowrate is required (steps 134, 130, 132). When a blower fan is stopped when the coolant temperature is equal to or less than the set temperature TS3 and a fresh air mode is selected, the circulation of coolant at the minimum flowrate is required when the vehicle speed Sv is above a set vehicle speed (steps 134 to 146). Cool air is prevented from being blown out of an air outlet and heating of the coolant is promoted by suppressing the speed of an electric pump while maintaining the ability to prevent fogging.

Abstract: The present invention overcomes many of the disadvantages of prior art mobile oil field heat exchange systems by providing an oil-fired heat exchange system. The present invention is a self-contained unit which is easily transported to remote locations. The present invention includes a single-pass tubular coil heat exchanger contained within a closed-bottom firebox having a forced-air combustion and cooling system. The rig also includes integral fuel tanks, hydraulic and pneumatic systems for operating the rig at remote operations in all weather environments. In a preferred embodiment, the oil-fired heat exchanger system is used to heat water on-the-fly (i.e., directly from the supply source to the well head) to complete hydraulic fracturing operations. The present invention also includes systems for regulating and adjusting the fuel/air mixture within the firebox to maximize the combustion efficiency. The system includes a novel hood opening mechanism attached to the exhaust stack of the firebox.

Abstract: A system that supplements the cooling of the power train of the vehicle and maintains the vehicle's cabin temperature. The system includes an processor, a blower, a heater core, and an evaporator. The blower blows air over the heater core so as to make the heater core in essence an auxiliary radiator. The system further includes a first proportioning valve and a second proportioning valve. The proportioning valves are operable by the processor to control the flow of the dissipated heat between the vehicle cabin and a designated location. Specifically, the first proportioning valve is disposed upstream the heater core and is moveable between an open position and a closed position. The second proportioning valve is disposed downstream the heater core and directs airflow from the heater core between the vehicle cabin and the environment.

Abstract: An HVAC damper includes a sheet metal frame surrounding a series of pivotal damper blades that are each supported by a pair of plastic bearing members. Each bearing member is a unitary piece that includes a radial bearing, a thrust bearing, a lug for connecting to a damper blade, a shaft-receiving feature for connecting to a drive shaft, and multiple crank pins for selectively connecting to a drive linkage. Choosing which crank pin gets connected to the linkage determines a damper blade's rotational direction relative to the other damper blades. Adjacent damper blades preferably rotate in opposite directions to ensure positive sealing engagement between their adjacent blade tips. The bearing members allow the drive linkage to be installed outside the frame to avoid obstructing the airflow through the damper. During assembly, the bearing members allow the damper blades to be placed within the frame prior to installing the bearing members.

Abstract: A modulating boiler system for heating a structure including a controller, a boiler operatively connected to the controller, and a thermostat operatively connected to the controller and boiler. The controller assesses a level of thermostat activity over a predetermined measuring period and adjusts the boiler in response to the level of activity to increase the boiler's efficiency.

Abstract: A system described is for providing improved cabin heating. The system may include a vehicle cabin heating system having a first and second heating system receiving coolant flow from the engine; and a control system for operating the engine at a first engine idle speed upon entering idle speed control operation from previous drive operation, maintaining said first idle speed for a duration, and then increasing engine speed to increase coolant flow to the second heating system during cold ambient conditions when the second heater system is in operation.

Abstract: A vent hole 12 is provided in the upper part of a front panel 1e of an outer case 1. Air in a room having passed through a section in which a main heat exchanger 6 is arranged is led to the vent hole 12 through a space between an upper plate 1b of an outer case 1 and an upper wall 2d of a combustion housing 2. A drain dish 18 is arranged on the upper face of the upper wall 2d of the combustion housing 2.

Abstract: An aircraft having a user region therein within which pressurized air at selected pressures can be maintained using an environmental control system provided in the aircraft, and a utility region outside a utility boundary wall of the user region within which selected equipment for the aircraft is located. An internal combustion engine, provided as an intermittent combustion engine, is provided in the utility region having an air intake coupled to combustion chambers therein and a rotatable output shaft also coupled to those combustion chambers for generating force with an air transfer duct extends between the user region and the air intake so as to be capable of conveying pressurized air to that air intake.

Abstract: The room heater has, in an outer case 1, both a first air flow passage that leads to a vent hole 12 through a section in which the main heat exchanger 6 is arranged and a second air flow passage that does not pass through the section in which the main heat exchanger 6 is arranged but leads to the vent hole 12 through a section in which a supplementary heat exchanger 6? is arranged provided. At least one of the first damper 20 which can freely block the first air flow passage and the second damper 21 which can freely block the second air flow passage is provided, and the first air flow passage or the second air flow passage is blocked in a weak combustion period.