Abstract: The invention generally relates to ventilation systems and methods, and more particularly to selectively configurable climate control systems and methods for use in data centers and the like. A device includes a support element and a plurality of ducts connected to the support element. The device also includes a manifold in fluid communication with each one of the plurality of ducts and a plurality of valves. Each respective one of the plurality of valves is associated with a respective one of the plurality of ducts. Moreover, there is at least one actuator operatively connected to the plurality of valves, which is structured and arranged to individually actuate each one of the plurality of valves.

Abstract: A heating system comprises a heater and a local heat exchange system in which the local heat exchange system comprises: a primary heat exchanger; a heat store having a secondary heat exchanger; a cold water inlet; and a hot water outlet, in which the local heat exchange system is remotely located from the heater, the primary heat exchanger and the heat store are arranged so as to be heated by the heater, and the primary and secondary heat exchangers are in fluid-flow communication with the cold water inlet and the hot water outlet.

Abstract: A housing includes a wall having an aperture and a vented panel, the vented panel including a first wall having a first side and a second side and an opening, a second wall having a first side, a second side facing the first wall first side and an opening, and a panel interior, the housing further including an air filter having an inner side and an outer side relative to the interior mounted against the second wall first side over the second wall opening with the filter inner side facing the housing interior, a water dam mounted along the filter bottom portion at the filter inner side, the water dam being higher than any water barrier mounted along the filter bottom portion outer side, whereby, any water reaching the filter bottom is substantially prevented from draining into the housing interior. Also an air filter usable in the housing.

Abstract: A method of auxiliary heater pump control in a vehicle including a heater core and an auxiliary pump in a heater core branch of a vehicle coolant system is disclosed. The method comprises the steps of: determining if a power plant is on, the power plant being connected to the coolant system; calculating an estimated heating power required to meet HVAC system heating requirements that is a function of mass air flow, specific heat, and a change in temperature in a passenger compartment; determining if the calculated estimated heating power required is greater than a minimum required heating power that will be able to maintain thermal comfort in the passenger compartment of the vehicle; and if the calculated estimated heating power required is greater than the minimum required heating power and the power plant is not on, activating the auxiliary pump to pump a coolant through the heater core.

Abstract: A hot water circulation system is associated with a heat pump and is advantageous in that heating or hot water supply can be performed smoothly even when an outdoor unit performing a heat pump cycle performs a defrosting operation.

Abstract: Provided is a defroster nozzle 4 which blows out air to an inner surface of a windshield 2 of a vehicle 1. The defroster nozzle 4 includes center-duct 45 forming member 41 and two end-portion-duct forming members 50. The center-duct 45 forming member 41 forms a center duct through which the air circulates, and has a center ventilation outlet 47 through which the air in the center duct is blown out to the inner surface of the windshield 2. The two end-portion-duct 54 forming members 50 are coupled respectively to two joint end portions 42, on outer sides in the vehicle width direction, of the center-duct forming member 41. Each end-portion-duct forming member 50 forms an end-portion duct which communicates with the center duct, and each end-portion-duct forming member 50 has an end-portion ventilation outlet 55 through which the air in the end-portion duct is blown out to the inner surface of the windshield 2.

Abstract: A coolant heater having a coolant tank and a burner tube within the coolant tank is used for marine and motor coach installations. The burner tube is offset sidewise from the center line of the coolant tank to allow an exhaust manifold to be positioned within the coolant tank and beside the burner tube which allows a predictable coolant movement to more evenly distribute the heat throughout the coolant. An exhaust manifold is positioned within the coolant tank in the space obtained by the burner tube offset which allows an “up” or “down” exhaust duct configuration depending on the heater installation. An expansion tank connected to the coolant tank has a level switch located within the expansion tank and a pump is operably connected to the expansion tank and to the level switch. The pump terminates operation when the level switch indicates low coolant in the expansion tank.

Abstract: An HVAC system is provided for use in a vehicle having a passenger compartment volume. The HVAC system includes a HVAC housing having a duct opening formed in an exterior sidewall thereof. An evaporator is further provided for exhausting air downstream that is cooler than the air on the upstream side. An auxiliary compartment, such as a storage bin, is spaced apart from the HVAC housing, such as in a remote location of the passenger compartment. An auxiliary duct fluidly interconnects the HVAC housing and the auxiliary compartment via the duct opening for transmitting the cool exhausted air to the auxiliary compartment to provide a cooling effect within the auxiliary location. The auxiliary duct, in some embodiments, is disposed external from the HVAC housing for improved service and retrofitting to existing HVAC systems.

Abstract: A heated air makeup unit comprising a heating chamber with a modulated furnace one or more non-modulated furnaces air temperature control and efficient furnace operation over a wide heating rate range. The utilization of indirect fired furnaces in the heated air makeup unit is disclosed. A control system is included to provide control of heated air temperature to within +/?1 F.° using continuous control of the heating rate of the modulated furnace and stepwise activation and de-activation of the non-modulated furnaces in response to heating demand. A programmed combustion air flow controller programmed to provide optimal airflow for any gas flow in a flow range of a modulating gas valve is provided to assure combustion efficiencies of at least 83%.

Abstract: The invention combines systems and methods for heat containment and cold air isolation for managing airflow and temperature in data centers. The data center contains at least two rows of cabinets containing heat-generating equipment and arranged to form a cold aisle and a hot aisle. The data center system includes panels or doors at both ends of the cold aisle and an optional cover over the cold aisle to inhibit cooled air supplied by an air conditioning system from exiting the cold aisle and inhibit air warmed by the heat-generating components from entering the cold aisle. A chimney coupled to the top, rear, or top and rear of the cabinets is configured to exhaust the warmed air into a region above the rows of cabinets. The chimneys may be ducted to a plenum or suspended ceiling or to the intake of the air conditioning system. Baffles and/or fans may be included in the chimneys, ducts, and/or plenums to control the air pressure.

Abstract: An air conditioning apparatus, including an electric motor driven blower for circulating air through a cabinet, also includes one or more electric heating elements and a system controller operable to control energization of the heating elements and the blower motor at predetermined operating conditions by way of suitable relay or control elements. The system includes a heating interlock relay to prevent energization of the one or more heating elements if the blower motor is inoperable, operating at other than a predetermined range of speeds or the system controller detects a malfunctioning heating element control relay or the like.

Abstract: The invention relates to a control device (12) for an engine-independent heater (3) that heats a liquid heat transfer medium of a heat transfer medium circuit (1) especially for motor vehicles. Said control device (12) reduces a heater (3) capacity when an actual temperature gradient ((dT/dtIst) of the heat transfer medium is equal to or exceeds a temperature gradient threshold value ((dT/dt)Schwell). The control device (12) determines the temperature gradient threshold value ((dT/dt)Schwell) dynamically in accordance with a difference in temperature (??) between a target temperature (?Soll) of the heat transfer medium and an actual temperature (?Ist) of the heat transfer medium. The invention further relates to a heater (3), a heating system (1), and a method for controlling the inventive heater (3).

Abstract: A heating and ventilation system for a passenger compartment of a vehicle. The system having a heater core supplied with engine cooling fluid via a variable flow pump for heating an air flow supplied to the passenger compartment. The system additionally having a controller for controlling the pump to increase engine cooling fluid mass flow-rate in response to a detected temperature decrease of the engine cooling fluid when the engine is off.

Abstract: An air conditioning system and a method of heating air flowing through a heater core of a HVAC module is disclosed. The method includes flowing essentially all of the air flowing through an evaporator through a heater core for all HVAC operating conditions. A flow control valve is opened long enough to allow a flow of hot coolant from an engine into the heater core. The valve is then closed to stop the flow of the hot coolant. When the temperature of the hot coolant is determined to have cooled to a predetermined temperature threshold, the flow control valve is then opened again to allow hot coolant to flow into the heater core.

Abstract: The invention relates to a wall sleeve with a ventilation opening at a guide tube (2), and a cover plate (5), which is mounted at the end of the guide tube and can be moved between a closing position and an open position, said cover plate (5) automatically opening and closing against a reset force, propelled by the pressure difference between the air pressure in the guide tube (2) and the external ambient air.

Abstract: The invention generally relates to ventilation systems, and more particularly to selectively configurable climate control systems for use in data centers and the like. A system includes a first structural element and a second structural element spaced apart from first structural element to define a space between the first and second structural elements. The system also includes partitions moveable into the space between the first and second structural elements and a controller arranged to control movement of the partitions.

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 ventilation fan unit with a heater, including: a frame with an opening provided at the underside of the frame; a cover having an air outlet and an air inlet provided at the opening of the frame; a snail-shaped casing with an air exit provided in the frame; a circulating fan enclosed in the snail-shaped casing; and a heating portion including a spiral heater mounted at the air exit of the snail-shaped casing, wherein the heating portion is communicated with the circulating fan through the air exit, wherein an axis of a spiral shape of the heater is in parallel with a rotation axis of the circulating fan, wherein the rotation axis of the circulating fan is located obliquely above the axis of the spiral shape of the heater.

Abstract: A multi-layer build-up system for floor coverings when using floor heating systems, particularly for laying ceramic floor coverings using the thin-bed method, has, on the underside, an essentially plate-shaped component for planar laying and for the accommodation of pipelines of a floor heating system. Component accommodation spaces for the pipelines are formed in the plate-shaped component and an uncoupling mat is disposed on the surface of the plate-shaped component. The uncoupling mat has an uncoupling layer on top of which an anchoring layer is disposed. The anchoring layer forms a structure element for a filler mass to be introduced in the top of the build-up system. The mass is plastic during processing and hardens afterwards. A reinforcement layer is disposed on top of and rigidly connected with the anchoring layer, at least in sections.

Abstract: An exhaust system includes an exhaust fan having a frame within which fan blades and a motor are secured. The frame includes an upper sidewall, a bottom sidewall, a first lateral sidewall and a second lateral sidewall, defining an inlet opening and an outlet opening on opposite sides of the frame. A flexible exhaust boot is secured to the frame of the exhaust fan adjacent the outlet opening. The exhaust boot is a flexible piece of material having a substantially tubular configuration with a first end having an opening and a second end having an opening. A support assembly secures the exhaust fan and exhaust boot in position adjacent an opening. The support assembly includes a vertical bracket having a first end and a second end, and an outwardly extending support block is mounted at the first end of the vertical bracket. The support assembly also includes a horizontal bracket extending substantially perpendicular to the vertical bracket.