Abstract: A two-phase heat transfer system includes an evaporator, a condenser, a vapor line, and a liquid return line. The evaporator includes a liquid inlet, a vapor outlet, and a capillary wick having a first surface adjacent the liquid inlet and a second surface adjacent the vapor outlet. The condenser includes a vapor inlet and a liquid outlet. The vapor line provides fluid communication between the vapor outlet and the vapor inlet. The liquid return line provides fluid communication between the liquid outlet and the liquid inlet. The wick is substantially free of back-conduction of energy from the second surface to the first surface due to an increase in a conduction path from the second surface to the first surface and due to suppression of nucleation of a working fluid from the second surface to the first surface to promote liquid superheat tolerance in the wick.

Abstract: A data center cooling system includes a data center having electronic equipment that is supported in multiple racks; a cooling fluid source; multiple cooling units in the data center, where each cooling unit is configured to cool air warmed by a sub-set of the electronic equipment in the data center; multiple control valves, including a control valve associated with a particular cooling unit of the cooling units; and a controller arranged to modulate the control valve associated with a particular cooling unit, to open or close the control valve to substantially maintain an approach temperature set point of the particular cooling unit.

Abstract: In a vehicular air conditioning apparatus, a pair of covers are provided on the respective sides of the casing that is constituted by respective air passages. The covers rotatably support a pivot shaft for a defroster damper and a pivot shaft for a sub-defroster damper. The sub-defroster damper is disposed in a passage directly connecting the heater core with the defroster blow-out port, and is disposed on an upstream side of the defroster damper. First and second blower units supply air into the casing. The sub-defroster damper is disposed so as to face a passage which is disposed even inside the casing. Thus, the flowing direction and the amount of air is adjusted.

Abstract: A temperature equalization system, including an installation, a heat equalizer disposed in a natural heat carrier and being made of a material of heat conduction to exchange heat with the natural heat carrier, a fluid transmission duct disposed between the heat equalizer and the installation and having a fluid contained therein for heat transmission, a pump connected in series with the fluid transmission duct for pumping the fluid, and a control means controlling an operation of temperature equalization system. The control means controls the pump to pump the fluid through the fluid transmission duct and an interior of the installation.

Abstract: A temperature equalization system, including an installation, a heat equalizer disposed in a natural heat carrier and being made of a material of heat conduction to exchange heat with the natural heat carrier, a fluid transmission duct disposed between the heat equalizer and the installation and having a fluid contained therein for heat transmission, a pump connected in series with the fluid transmission duct for pumping the fluid, and a control means controlling an operation of temperature equalization system. The control means controls the pump to pump the fluid through the fluid transmission duct and an interior of the installation with a periodical change of flowing direction.

Abstract: A datacenter may use heat collected from a heat exchanger at the exhaust portion of a cooling system to heat inlet louvers for an atmospheric intake. The louvers may have fluid passages through which heated fluid may pass and cause the louvers to heat up. The heated louvers may operate during periods of snow, rain, high humidity, or other conditions to eliminate condensation, snow and ice buildup, or other problems. In some embodiments, a liquid may be passed through the louvers, while in other embodiments, heated air or other gas may be passed through conductive paths in the louvers. In a heated air system, holes in the louvers may allow the heated air to enter the incoming airstream to regulate the incoming temperature to the datacenter.

Abstract: Method of controlling a variable delivery pump fitted to a heating system comprising: a heat exchanger connected to two circuits of fluids, the variable delivery pump making it possible to vary the flow-rate of the first fluid inside the heat exchanger; a return loop on the primary circuit allowing the first fluid reaching the input of the heat exchanger to mix with a portion of the first fluid coming from the output of the exchanger; a first temperature sensor measuring a temperature of the second fluid coming from the secondary circuit; a second temperature sensor measuring a temperature of the first fluid coming from a primary circuit; a control unit electrically connected to the first and second temperature sensors, the sensors generating electrical signals as functions of the temperatures and constituting electrical input signals of the control unit.

Abstract: A heat exchanger usable with a ventilator, the heat exchanger having an improved structure so that air passing through the heat exchanger may be prevented from leaking. The heat exchanger of the general inventive concept includes a heat-exchanging element having a plurality of liners stacked in a uniformly spaced state and a plurality of spacers disposed between the liners to define air passages, and corner guides respectively coupled to corners of the heat-exchanging element. Each of the corner guides includes a guide channel forming a space to receive the corner of the heat-exchanging element so that the corner guides securely come into close contact with the heat-exchanging element, and to minimize a loosening of the corner guide due to an adhesive applied between the heat-exchanging element and the corner guide.

Abstract: An HVAC system includes an HVAC unit having a cooling mode and a heating mode for conditioning the air in an inside space, and a programmable thermostat located remotely from the HVAC unit. The HVAC unit may have an onboard controller configured to control when the HVAC unit is in the cooling mode or heating mode, and whether the HVAC unit is activated or not. In some cases, the onboard controller of the HVAC unit may use a common temperature setpoint when controlling in the cooling mode and the heating mode. The programmable thermostat may have a programmable schedule with a plurality of time periods, where each time period has a heating setpoint and a cooling setpoint separated by a dead band. The onboard controller of the HVAC unit may be configured to accept input signals from the remotely located thermostat.

Abstract: A seat air-conditioning system for automotive vehicles includes an air-conditioning unit for generating cold air or hot air, a driver seat including a seat portion provided with a plurality of air discharge holes through which to discharge the cold air or the hot air to the outside, a front passenger seat including a seat portion provided with a plurality of air discharge holes through which to discharge the cold air or the hot air to the outside, an outlet duct mounted to the air-conditioning unit for drawing the cold air or the hot air from the air-conditioning unit therethrough, a seat duct connected to the outlet duct for supplying the cold air or the hot air to the driver seat and the front passenger seat therethrough, and a seat blower attached to the outlet duct for blowing the cold air or the hot air at an increased flow rate.

Abstract: A heat dissipating device includes a chamber with an evaporation portion and a condensation portion, the chamber including a refrigerant. The chamber further includes an evaporation portion scraping brush provided corresponding to the evaporation portion, the evaporation portion scraping brush being able to sweep relative to an inner surface of the evaporation portion. A refrigerant liquid film is formed on the inner surface of the evaporation portion. Since the fluid refrigerant is uniformly applied to an inner surface of the evaporation portion to form a liquid film, the heat dissipating ability of the heat pipe heat dissipating device is improved, and the heat dissipating uniformity of the heat pipe heat dissipating device is enhanced. A heat dissipating method is also provided.

Abstract: The heating-ventilation and/or air-conditioning device for a motor vehicle passenger compartment comprises modules grouped substantially at the same horizontal level, namely at least one ventilation module (14) arranged to produce a pulsed air flow, a heating module (12) to be located in a central region of the passenger compartment and having heat exchangers (32, 34, 36) through which the air flow from the ventilation module can pass, and at least one distribution module (16) having an air inlet connected to a side air outlet (46d, 46g) of the heating module. The device of this invention may be installed in a vehicle passenger compartment having no central console.

Abstract: A temperature equalization system, including an installation, a heat equalizer disposed in a natural heat carrier and being made of a material of heat conduction, a relay heat equalizer, a first fluid transmission duct disposed between the relay heat equalizer and the installation and having a first fluid contained therein for heat transmission, a second fluid transmission duct disposed between the heat equalizer and the relay heat equalizer and having a second fluid contained therein for heat transmission, a pump and a relay pump respectively connected in series with the first and second fluid transmission ducts for pumping the first and second fluid, and a control means controlling the pump to pump the first fluid through the relay heat equalizer, the fluid transmission duct and an interior of the installation, and to pump the second fluid through the relay heat equalizer, the second fluid transmission duct and the heat equalizer.

Abstract: A secondary pump-type heat source system includes: heat sources connected in parallel; a load system in which the heat source water flows; a primary pump supplying the heat source water to the load system; a secondary pump provided for each heat source and supplies the heat source water subjected to heat exchange in the load system to the heat source; and a heat source controller calculating flow quantity of the heat source water flowing in the heat source side and flow quantity of the heat source water flowing in the load system side by assigning a result from measurement by a water temperature sensor detecting heat source temperature to an operating characteristic of each heat source and controlling operation of the secondary pumps based on the calculation result.

Abstract: Provided is a vehicle heating ventilation and air conditioning unit capable of improving the performance of a side demister in a foot mode where a DEF damper is set to a small degree of opening, and capable of securing window clearness of side window glass.

Abstract: A thermal management system and method for active cooling of high speed seeker missile domes or radomes comprising bonding to an IR dome or RF radome a heat pipe system having effective thermal conductivity of 10-20,000 W/m*K and comprising one or more mechanically controlled oscillating heat pipes, employing supporting integrating structure including a surface bonded to the IR dome or RF radome that matches the coefficient of thermal expansion the dome or radome material and that of said one or more mechanically controlled oscillating heat pipes, and operating the heat pipe system to cool the IR dome or RF radome while the missile is in flight.

Abstract: A vehicle air conditioning system includes an electric powered refrigerant compressing device, an evaporator, an electric heater, an air temperature determining component, a cabin interior temperature controlling component, an upper limit electric power setting component, and an electric power distribution controller. The evaporator receives refrigerant from the compressing device. The heater is downstream of the evaporator in an air passageway. The determining component determines a first air temperature upstream of the evaporator and a second air temperature between the evaporator and the heater. The controlling component sets a vehicle interior discharge air temperature at a position downstream of the heater to a target temperature. The power setting component sets an upper limit for power supplied to the compressing device and the heater.

Abstract: A windshield washer fluid heater for an automotive vehicle has an elongated housing with two open ends and in which the housing defines a housing chamber. A tubular subhousing divides the housing chamber into an outer housing chamber and an inner housing chamber. A core is disposed in the inner housing chamber and this core forms an annular chamber between the core and the subhousing. A pair of end caps is attached to the ends of the housing and these end caps sealingly engage the housing and the subchamber to fluidly separate the outer housing chamber from the annular chamber. The housing includes a washer fluid passageway which fluidly connects a washer fluid port on the end cap with the annular chamber as well as a coolant fluid passageway which fluidly connects a coolant port on each end cap with the housing chamber.

Abstract: In one embodiment, a system includes a telecom utility cabinet and an air-based geothermal cooling system for the telecom utility cabinet. The system also includes a leak detector for the air-based geothermal cooling system. In another embodiment, a method includes detecting a leak in an air-based geothermal cooling system. The method also includes activating a liquid pump for the air-based geothermal cooling system in response to the leak detection.

Abstract: A thermal module for use on a spacecraft to control thermal loads coming from a heat source is disclosed. The thermal module includes a two-phase loop system and a heat rejection system. The two-phase loop system includes a thermal collector, a heat flow regulator, a by-pass line, and a condenser. The condenser and the heat rejection system are thermally coupled, such that the heat flow regulator redirects part of the thermal loads from the heat source to the condenser, from which the heat rejection system directs said thermal loads to a heat sink. The temperature of the heat source is regulated by bypassing another part of the thermal loads back to the thermal collector through the by-pass line in a proportional manner, to avoid overcooling the heat source. The heat rejection system is designed based on the hottest possible conditions for the spacecraft mission.