Abstract: The invention relates to a refrigerant circuit and a process for operation of the refrigerant circuit of an HVAC system of a vehicle, particularly an electric or hybrid vehicle. The refrigerant circuit includes a primary circuit with a compressor, a heat exchanger for heat transmission between the refrigerant and the environment, a collector, a first expansion member, a heat exchanger for supply of heat from the fresh air to be conditioned of the vehicle interior to the refrigerant and a heat exchanger arranged switched in parallel to the heat exchanger. Further, the refrigerant circuit is provided with a secondary train that extends starting from a tapping point positioned between the compressor and the heat exchanger up to a connection point and is provided with a heat exchanger for heat transmission from the refrigerant to the fresh air to be conditioned for the vehicle interior, and a subsequent control valve.

Abstract: This invention is directed to a heat exchanger that exchanges heat between a first fluid, a second fluid, and a phase change material (PCM). Both tubes and header tanks contain phase change material. The phase change material header tanks are advantageously located outside of the first fluid's header tanks.

Abstract: A cooling device for electric equipment includes a cooling unit for cooling inverter elements. Cooling unit includes a heat mass which has a surface provided with the inverter elements and a back surface arranged on a back side of surface to form a heat mass inner tank arranged between the surface and the back surface and transfers heat generated at the inverter elements, a fin portion which is provided on the back surface and radiates heat transferred through the heat mass, air-conditioner coolant pipelines which are provided on the surface and form a coolant passage through which a coolant for vehicle cabin air-conditioning flows, and a water pump which supplies and discharges coolant water to and from the heat mass inner tank. With such a configuration, a cooling device for electric equipment which is excellent in cooling efficiency is provided.

Abstract: This invention optimizes the settings of refrigeration components to achieve a power efficient state. First, the compressor is run at a level that achieves a desired temperature. Next, the invention searches for the most energy efficient settings (claimed as operation manipulation amounts) for the fans and indoor expansion valves. The search algorithm tries adjusting the settings of each component by a predetermined amount, adopting the setting that is the most energy efficient for the refrigeration cycle. The algorithm then increases or decreases the predetermined amount, as appropriate, and repeats the search. This allows the invention to quickly and accurately converge on the most energy efficient setting for each component.

Abstract: A tamper proof thermostat has a predetermined and permanently fixed maximum heating temperature and minimum cooling temperature associated with each portion of a preset schedule. A user may only select temperatures below the maximum heating temperature or above the minimum cooling temperature. The thermostat further receives a dedicated time signal broadcast from an external source. The broadcast is the exclusive source of time information for the thermostat, ensuring that a user is not able to manipulate the preset schedule.

Abstract: The disclosure relates to a control valve for a medium circuit of an internal combustion engine, in particular to a thermostat of a coolant circuit of the internal combustion engine. The control valve includes a valve housing, an expansible material element arranged in a valve body, an energy accumulator having an abutment element, a valve seat, and at least one locking element arranged on the abutment element, each locking element having a counter-latching face. The control valve has a first position wherein the counter-latching face of each locking element is in a non-positive connection with a corresponding latching face of the valve housing in order to force the control valve into a mechanically blocked, forced-open position, the latching face being formed by means of an opening edge in the valve housing. This position may enable a quick and reliable initial filling or refilling of the coolant circuit.

Abstract: A storage compartment cooling apparatus includes a liquid circulation system that circulates a liquid coolant, a heat exchanger that cools an interior of a storage compartment using the liquid coolant, a bypass line through which the liquid coolant selectively bypasses the heat exchanger, one or more valves that controllably increase and decrease the flow of the liquid coolant through the heat exchanger and the bypass line, and a controller that controls the one or more valves. A storage compartment cooling system includes a liquid coolant distribution loop that distributes a chilled liquid coolant to a plurality of the storage compartment cooling apparatuses coupled in series and a recirculation cooling device that includes a chiller that chills the liquid coolant to have a temperature lower than an ambient temperature and a circulation unit that circulates the chilled liquid coolant through the liquid coolant distribution loop.

Abstract: The invention is a cooling module for one or more data centers. The cooling module accepts coolant from a data center, chills the coolant, then returns the coolant to the data center. The coolant is subject to cooling via a free cooling system and a then chiller. The chiller includes a bypass. The free cooling system and the chiller are fluidly connected in a second cooling loop that includes a dry cooling tower. A pump maintains pressure at a predetermined level.

Abstract: A double-wall heat exchanger includes a plurality of heat exchange plate pairs. Each heat exchange plate pair forms a double-wall structure including two heat exchange plates that are at least partially separated by a leak space. At least one weep hole is disposed through the plurality of heat exchange plate pairs and intersects the leak spaces of the plurality of plate pairs to channel leaking fluid from the leak spaces to a location outside of the heat exchanger. The at least one weep hole is positioned on a surface of the heat exchanger at a location that is spaced from a side boundary of the heat exchanger thereby enabling an operator of the heat exchanger to observe a leakage on the surface of the heat exchanger.

Abstract: An occupancy sensor has three layers. The bottom layer contains two electrodes, and a resistive element between the electrodes. The middle layer is a spacer. The top layer is a third electrode, divided into two parts. When a person sits on the sensor, both parts of the third layer contact the resistive element. This causes current to flow through all of the electrodes. Accordingly, occupancy can be detected by measuring current flow through the electrodes. The device additionally provides heating via the resistive element. The sensor can be arranged in a vehicle seat.

Abstract: A fluid control thermostatic valve contains thermally responsive wax. As temperature rises, the wax expands thus pushing a deformable member up a confined path defined by guide 40 until the member contacts a fixed post 60. An immobile retainer 72 is secured to the fixed post 60. Force from the elastic member against the post causes actuator 30 to separate from retainer 72, thus opening a flow passage. The control valve is unique because retainer 72 functions as both a valve seat for actuator 30 and a fixed support for spring 84.

Abstract: The invention relates to a fail-safe rotary actuator (1) for a coolant circuit, in particular for a coolant circuit of an internal combustion engine (2) having a plurality of sub-circuits (3) and (4), includes a coolant delivery pump (5) for circulating the coolant within the coolant circuit, and having a rotary-slide housing (8) which has a plurality of housing pass-through openings (6) and (7) and in which at least one rotary slide (9) having at least one rotary slide pass-through opening (11) and (12) is rotatably supported, wherein the housing pass-through openings (6) and/or (7) are fluidly connected to at least one sub-circuit (3) and/or (4), and can be brought into at least partial coincidence with the rotary slide pass-through openings (11) and/or (12) by a rotary motion of the rotary slide (9), wherein a thermostat valve (13) opens a flow path running parallel to the rotary slide (9) from one of the sub-circuits (3) or (4) to the coolant delivery pump (5), when a temperature limit of the coolant is e

Abstract: An air conditioner intakes indoor air and outdoor air, blows it through a heat exchanger, then supplies the conditioned air to an indoor space. In the heat exchanger, water cools the air. A remote refrigeration circuit, also known as a chiller, cools the water. A controller controls the chilled water to stay within a temperature range. When the chilled water exceeds the temperature range, the air conditioning fan is decelerated, thus reducing the amount of heat that the water absorbs from the air. When the desired indoor temperature is less than the actual indoor temperature, then the fan is returned to its maximum velocity.

Abstract: A thermal energy heat exchanger for an air conditioning system includes a row of first tubes, a row of second tubes, and a row of third tubes. Inside, heat is exchanged between air, refrigerant, and phase change material, also known as PCM, cool storage material, cold storage material, and latent heat storage material. The first row of tubes carries refrigerant. A portion of the second row of tubes and a portion of the third row of tubes carry refrigerant. The remainder of the second and third rows of tubes carry phase change material. The phase change material can be associated with a phase change material manifold. Advantageously, the melting point of phase change material in the second tubes can be different from the melting point of the phase change material in the third tubes.

Abstract: This patent is directed to an external air conditioning system connected to a parked airplane. The system has multiple refrigeration units. Each refrigeration unit has a controller. Each refrigeration unit's controlled is linked to a common controller. A single stream of air flows through all of the evaporators in series. Each of the refrigeration units has multiple compressors. Additional compressors are activated or deactivated based on refrigerant pressure. The activation or deactivation pressures are staggered across the refrigeration units, thus coordinating operation of the multiple refrigeration units.

Abstract: Embodiments of the disclosure may include a dispenser for dispensing a liquid. The dispenser may include a measurement chamber configured to receive the liquid, a temperature probe positioned within the measurement chamber, and a capacitance probe positioned within the measurement chamber. The capacitance probe may house the temperature probe. The dispenser may also include a first conduit fluidly coupled to the measurement chamber and configured to deliver the liquid out of the dispenser.

Abstract: A heat dissipation device includes a plurality of fins connected to each other and two heat pipes extending through the fins. Each fin includes a plate, an upper flange extending from a top side of the plate, a lower flange extending from a bottom side of the plate and an inner flange extending from an inner periphery of a groove defined in the plate. The fins include first fins and second fins having lengths larger than that of the first fins. The two heat pipes include a wide heat pipe and a narrow heat pipe. The wide heat pipe extends through the grooves and contacts the inner flanges of the first fins and the second fins. The narrow heat pipe extends through the grooves and contacts the inner flanges of the second fins.

Abstract: This invention relates to a multi-room air conditioning system with a plurality of indoor expansion valves. A method for sequencing the initialization of each indoor expansion valve upon system startup is disclosed. The method includes the following steps: 1. Initializing expansion valves corresponding to active indoor units, 2. Turning on the compressor, 3. Adjusting the indoor expansion valves corresponding to active indoor units, 4. Initializing and adjusting indoor expansion valves corresponding to inactive indoor units.

Abstract: Disclosed is an air conditioner which can obtain an energy-saving effect without any change to the setting temperature set by a user and, accordingly, without causing discomfort to the user. If a capacity restriction mode is set to at least one of indoor units Y1 and Y2, the setting temperature Ts in the indoor units Y1 and Y2 is not changed and is maintained at a value set by the user and a compressor 1 is operated with the capacity less than the normal capacity.

Abstract: This invention relates to a heating/cooling system operating on the basis of a novel SPLIT BUFFER TANK; representing an efficiency improvement alternative to HVAC systems functioning with existing commercial buffer tanks. Currently, commercial buffers have the heat source provider (HSP)-return and system-return discharging to a common buffer/vessel. Novel SPLIT BUFFER is provided with a SEPARATION DISK placed inside the tank as mechanical way of separating the hot water inflow from the HSP from the warmer water inflow from system return. The disk moves up and down along the tank driven by demanded water supply and return. Pump-1 circulates hot water from the hot section of the buffer to the secondary system claiming for heat. Pump-2 circulates warmer water from the warmer section of the buffer through the HSP where it is reheated, and subsequently stored in the hot section of the buffer to reinitiate this cycle again.