1654 results about "Solar air conditioning" patented technology

A method for logging data from an HVAC system comprises the steps of: collecting, within a thermostat, a plurality of data elements corresponding to a current time, at least one user setting, at least one HVAC system state, and at least one environmental measurement; correlating, within the thermostat, the collected data elements according to the current time; and storing, within the thermostat, the collected data elements. The method may further comprise the steps of: transmitting the stored data elements from the thermostat to an external device; and analyzing, within the external device, the transmitted data to determine energy savings. The data may be transmitted from the thermostat when the thermostat receives a request from the external device. The data may be transmitted from the thermostat to the external device over a communication link comprising one of a hard-wired communication link or a radio frequency communication link.

A system and a method for detecting and diagnosing faults in heating, ventilating and air conditioning (HVAC) equipment is described. The system comprises a sensor; a classifier modelling a normal behaviour of the HVAC equipment in situ in the installed operation environment, the classifier having a plurality of classifier parameters for computing a classifier score using an input data based on a measured value from the sensor, the plurality of classifier parameters being created during a training phase of the system using the input data during the training phase; and a decision module for comparing the classifier score to a decision threshold, the decision threshold being set during the training phase.

A climate control system of a vehicle and a method of controlling the climate control system to minimize vehicle energy consumption and maximize occupant comfort. The climate control system includes a main HVAC system for conditioning a fluid discharged into a passenger compartment of the vehicle, an auxiliary HVAC system for conditioning a localized fluid of at least one HVAC zones of the passenger compartment, a seat system, and an HVAC controller. The HVAC controller controls the main HVAC system, the auxiliary HVAC system, and the seat system based upon at least one parameter and condition which pertains to at least one of electrical energy consumption of the vehicle and occupant comfort.

Air conditioning systems that cool and dehumidify spaces within enclosures, buildings having such systems, and methods of controlling humidity within a space. Embodiments adjust speed of a blower or fan motor based on inputs from sensors within the system, using automated processes, to reduce airflow rates to provide for lower temperatures of the cooling coil and to increase the ratio of latent to sensible heat transfer. Fan speeds may be increased as appropriate to avoid frost formation on the cooling coil, to give priority to cooling when temperatures within the space are high, or periodically to provide for mixing within the space.

An air conditioning system includes at least a magnetic disc disposed in parallel along a rotary shaft thereof, permanent magnets installed within rotational radii of the respective magnetic discs, and applying magnetic fields to the magnetic disc rotating within a predetermined section, a heat exchanger for heating installed on a side of the permanent magnets, and having at least a heat radiation fin, and a heat exchanger for cooling installed on a side opposite the permanent magnets, and having at least a heat absorption fin. The air conditioning system has a simple structure, is safe from the fear of environmental pollution, and is suitable for a next-generation air conditioning system to be applied to a hybrid or electric automobile because it does not use engine heat or a refrigerant

A system and method of selecting air intake between 100% fresh air mode and 100% recirculated air mode for optimum heating / cooling performance, fuel economy and / or high voltage (HV) battery power consumption is disclosed. The system and method includes a partial recirculation control strategy in which the air inlet door is moved progressively to any position by taking into account cooling / heating loads and cabin fogging probability. As cooling / heating loads increase the air inlet door moves toward 100% recirculation mode. As fogging probability increases the air inlet door moves toward 100% fresh air mode. By selectively choosing a position between 100% recirculation and 100% fresh air, fuel economy and / or HV battery power consumption is optimized without compromising passenger comfort or causing fogging on interior glass surfaces. In cooling applications the compressor load is minimized and air conditioning performance is improved due to the reduced evaporator cooling load. The direct result of this improvement is increased fuel economy in the case of the internal combustion vehicle, reduced engine on time in the case of the hybrid electric vehicle (due to reduced HV battery power consumption), and reduced HV battery power consumption in the case of the hybrid electric vehicle (HEV) and the electric vehicle (EV). In heating applications, as the heating load is reduced the fuel economy of the internal combustion (IC) engine will be improved, the engine on time is reduced in the case of the HEV, and HV battery power consumption is reduced in the case of the EV.

A control system and method for controlling both temperature and humidity in an air conditioning system having a variable-speed compressor and a variable-speed indoor blower. In one embodiment, the control system includes: (1) a temperature control loop in which a target speed of the compressor is determined based on sensed and setpoint temperatures and (2) a humidity control loop, located in the temperature control loop, in which a target speed of the indoor blower is determined based on sensed and setpoint humidities, the target speed of the compressor employable to control the compressor and the target speed of the indoor blower employable to control the indoor blower of the air conditioning system.

The invention relates to a VRF (varied refrigerant volume) air conditioning system, which comprises a compressor, an evaporator, a condenser, an outdoor environment temperature sensor and an electronic expansion valve opening degree control device, wherein the electronic expansion valve opening degree control device comprises a controller, temperature sensors, a pressure sensor and an electronic expansion valve, the temperature sensors, the pressure sensor and the electronic expansion valve are respectively in electric signal connection with the controller, the temperature sensors are respectively arranged on an exhaust pipe of each compressor for detecting the exhaust temperature value, the pressure sensor is arranged on a main exhaust pipe of a plurality of compressors for detecting the total exhaust pressure, and the electronic expansion valve is arranged at the back end of the condenser for realizing the throttling on an outdoor unit. The invention also discloses a control method of the VRF air conditioning system. The control method avoids the defects that in the practical use, when the exhaust temperature is too low, excessive coolants are deposited at the air return side of the system, the compression with liquid of the compressor is caused, when the exhaust temperature is too high, the compressor is overheated, and the lubricating oil carbonization of the system is caused. The stable and efficiency operation of the whole system is guaranteed.

The invention discloses a control method and a device of air-conditioning equipment and an air conditioning system. The control method comprises the following steps of: step S101, carrying out comparison on the water-outlet temperature of an evaporator and set object temperature, and determining the object load value of the compressor of the air-conditioning equipment; step S103, determining the variation of the load value of the air-conditioning equipment according to the object load value and the current load value of the compressor of the air-conditioning equipment; and step S105, adjusting the current load value of the compressor of the air-conditioning equipment according to the determined variation value. According to the invention, an object load is obtained through collecting the backwater temperature of an evaporator, the load of the compressor is adjusted according to the object load, and more accurate reference can be used for rationally adjusting a working mode of an air conditioner compressor; and the frequent adjustment of the compressor is avoided, the display of the system performance is more stable, and the service life of the compressor is guaranteed.

An equipment cooling system and method employing modular scalable coolant distribution units that interface with each other to provide liquid cooling for computer data centers. The coolant distribution unit (CDU) permits the use of elevated water temperatures without increasing the load on the computer room air conditioning. A control unit processes environment data to control pump and valve components supporting redundancy and multiple primary and secondary coolant loops.

This invention provides buildings with a modular air conditioning system that utilizes solar energy for heating air. This invention contains a solar collector assembly, an inlet assembly and an outlet assembly. The solar collector assembly further comprises a transparent panel, a heat-absorbing set and a support base, and forms paths for heating the air, wherein the heat-absorbing set is made of several simple, light-weight modular heat-absorbing units to form several heat-absorbing channels. Such a design not only can fully utilize the heat-absorbing space on the roof and save the cost for being displayed in marketing channels, but also can be constructed by the users in accordance with their own needs, so as to save cost in modularization. The inlet and outlet assemblies communicate to the heat-absorbing channels in the solar collector assembly and are respectively connected to the pipes and paths leading into and out of the buildings. By switching and adjusting the openings of these pipes and paths, in winter, the preheated air will be introduced into buildings; and in summer, the hot indoor air will be expelled out of the buildings and fresh air will be guided into the buildings. As a result, a more economical air conditioning system is formed.

The invention discloses an air conditioning system for an automobile. The air conditioning system comprises a compressor, a vapor and liquid separator, a third heat exchanger, a first air conditioning case, a second air conditioning case and throttling elements. When the air conditioning system is in a refrigerating mode, refrigerants flow out of a second heat exchanger and reach the third heat exchanger, heat is outwardly dissipated at the third heat exchanger, and then the refrigerants are divided into two branch flow channels; the refrigerants of the first branch flow channel flow to a first heat exchanger of the first air conditioning case to provide cold flows to a compartment; the refrigerants of the second branch flow channel flow to a battery heat exchanger of the second air conditioning case to provide cold flows to a battery. The air conditioning system for the automobile has the advantages that only the refrigerants circulate in the air conditioning system, heating and circulation of heating circulating working media are omitted, and accordingly the system is simple in manufacture.

A multi-mode combined cooling, heating and power micro-grid system considering ice storage air conditioning is composed of a distributed power generation system composed of photovoltaic power generation, wind power generation, a fuel cell, a micro gas turbine and ice storage air conditioning, primary system composed of an energy storage system and other co-supply equipment, and a secondary dispatching control system. A CCHP-MG multi-time-scale optimal scheduling method is proposed, in a day-ahead plan, the uncertainty of renewable energy is described through multiple scenes, economic operationof CCHP-MG in a running optimization period is focused on; Intra-day scheduling is based on the scheme of the day-ahead plan, the difference and correlation of cooling, heating and power on scheduling time scale are considered, a two-layer rolling optimal scheduling scheme is proposed, the upper layer dispatches the combined cold and heat supply equipment, the lower layer adjusts power equipment,taking minimization of the adjustment cost as the goal, the smooth output of each co-supply equipment is obtained. The invention can remarkably improve the comprehensive utilization efficiency of energy and the local absorption capacity of the distributed renewable energy, and realize the economic and safe operation of the multi-energy micro-network.

The invention belongs to the technical field of air conditioning, and particularly relates to a control method and device for an air conditioning system. According to the control method and device for the air conditioning system, all temperature parameters of the system after defrosting are acquired, the opening degree of operation of an electronic expansion valve is adjusted timely according to indoor temperature differences delta TIN and outdoor temperature differences delta TOU, the phenomenon of oil blockage of an expansion valve after low temperature defrosting of new refrigerant air conditioning systems such as R290 is effectively avoided, the using comfort of the new refrigerant air conditioning systems is improved, the service life of a compressor and the system is prolonged, and a reference basis is provided for better matching new refrigerants for studying novel compressor engine oil in the future.

The invention discloses a fault handling method and a fault handling device of an air conditioning system. The fault handling method of the air conditioning system comprises the following steps the air conditioning system detects a working state per se; when detecting a fault per se, the air conditioning system transmits fault information to a data processing platform, wherein the data processing platform is used for querying fault resolution information corresponding to the fault information and transmitting the fault resolution information to the air conditioning system, and fault resolution information corresponding to different pieces of fault information is stored in the data processing platform; and the air conditioning system receives the fault resolution information from the data processing platform. According to the fault handling method and the fault handling device, the problem that the air conditioning system cannot automatically resolve the fault in the prior art is solved, and further the effect of improving the fault removal efficiency of the air conditioning system is achieved.

The invention relates to an electric generation, air conditioning and heating device which can use natural working substance, solar energy or waste heat. It comprises a solar energy collector or a waste heat collector, a pump, a turbine, a generator, a refrigerator, a heat exchanger and the pipeline. Wherein, the inlet and outlet of solar energy collector or waste heat collector are individually connected to the outlet of pump and the inlet of turbine to form the natural working substance circuit; the liquid natural working substance with low boiling point via the pressurizing of pump can reach hypercritical pressure condition and via the heating of solar energy collector or waste heat collector to form hypercritical liquid with high temperature and high pressure, then via the thermal insulation expanding, to form low pressure gas, and via the heat recycle to be cooled into liquid, at last via the pump to be feedback to the solar energy collector or the waste heat collector to realize the thermodynamics cycle. The hypercritical liquid with high temperature and high pressure can drive the turbine generator to generate electricity; and the heat recycle process uses the adsorption refrigerator to supply the cool and warm air conditioner as well as supply the hot water.

The invention discloses a fuel cell whole vehicle thermal management system, which is characterized by comprising a power electronic cooling system, a fuel cell cooling system, a power cell thermal management system and an air conditioning system. One side of the thermoelectric conversion device and the power battery thermal management system form a power battery coolant circuit, and the other side is connected in series with the coolant circuit of the power electronic cooling system; The thermoelectric device is arranged in the air conditioning system and is in contact with the coolant flowing out of the air conditioning compressor of the air conditioning system and the coolant flowing through the cab evaporator or the battery refrigeration exchanger, respectively. The whole heat management system of the fuel cell vehicle integrates different heat management subsystems of the whole vehicle and realizes cooling of the power electronic system by using the semiconductor material throughheat conversion mode; the whole heat management system of the fuel cell vehicle integrates different heat management subsystems of the whole vehicle. In the same way, the regenerative effect of the air conditioning system is realized, the liquid impact phenomenon of the air conditioning compressor is avoided, and the energy efficiency ratio and the service life of the air conditioning system are improved.

In an air conditioning system, a first expansion device and a second expansion device playing a different role from each other are controlled in a different control method suitable for each role, thereby improving the performance and stability of the system. Furthermore, the control method for the first expansion device is differentiated according to the operation state of the air conditioning system, thereby improving the stability of the system. Furthermore, the intermediate pressure can be adjusted more rapidly and precisely according to the state of the air conditioning system by differentiating the control method for the first expansion device for adjusting the intermediate pressure depending on the degree of superheat of the refrigerant, thereby improving the stability and performance of the system. Furthermore, the first expansion device is gradually opened by controlling such that a change in opening degree may change according to the opening time of the first expansion device, thereby improving the stability of the system and achieving more stable switching of the control method for the first expansion device.

The invention discloses an air conditioning system of an automobile. The air conditioning system comprises a refrigerant circulating system and a coolant circulating system. The refrigerant circulating system can provide a cold source for the coolant circulating system and comprises a compressor, a vapor-liquid separator, an interior condenser, an exterior heat exchanger and an interior evaporator, the vapor-liquid separator is arranged in front of an air inlet of the compressor, and the interior condenser is connected with an outlet of the compressor; a second throttling element, a bypass flow path and an intermediate heat exchanger are arranged between the interior condenser and the exterior heat exchanger, and at least two throttling elements are respectively arranged in pipelines which run from the exterior heat exchanger to the interior evaporator and the intermediate heat exchanger respectively, so that refrigerants which are condensed by the exterior heat exchanger can be throttled by the throttling elements and then can flow to the interior evaporator and the intermediate heat exchanger when the refrigerant circulating system is in a refrigerating mode. The air conditioning system has the advantages that batteries can be cooled, heat can be absorbed from low-temperature heat sources in a heat pump manner and is used for heating, accordingly, the efficiency is improved, and power consumption is reduced.

The invention discloses an oil return control device, an air conditioning system and an oil return control method of the air conditioning system. The oil return control device comprises an oil separation mechanism and an oil return control assembly, wherein the oil separation mechanism is arranged at an exhaust port of a lower row of exhaust cylinders in a compressor comprising two or more parallel cylinders, and is used for separating and obtaining lubricating oil from exhaust gas of the lower row of exhaust cylinders, and the oil return control assembly is arranged between the oil separationmechanism and an oil pool at the bottom of the compressor, and is used for controlling the lubricating oil to return to the oil pool according to the pressure difference between exhaust ports of thetwo or more exhaust cylinders in the compressor. According to the scheme, the defects that in the prior art, a lower cylinder is prone to wear, short in service life, low in running reliability and the like can be overcome, so that the beneficial effects that the lower cylinder is not prone to wear, long in service life and high in running reliability are achieved.

The invention discloses a train air conditioning load control method based on a passenger weighing system and a train air conditioning load confirming method. The train air conditioning load control method based on the passenger weighing system comprises the following steps of S1, obtaining passenger weight data of each train compartment and exerting an air conditioning load module of a train air conditioning control system to calculate a load value of each train compartment needed by air conditioner simulation; S2, obtaining supply path refrigerant temperature data, return path refrigerant temperature data and refrigerant flow data of an air conditioner of each train compartment, and exerting the air conditioning load module of the train air conditioning control system to calculate the load value of each train compartment, actually needed by the air conditioner; and S3, comparing the needed load value of each train compartment by calculation simulation and the actually needed load value of each train compartment, and adjusting refrigerating capacity of the train air conditioning control system through comparing the load states in real time so that passengers feel comfortable and the method is also energy-saving and consumption-reducing. Compared with the traditional method for controlling the load of the air conditioning system through monitoring the temperature in the compartment, the train air conditioning load control method disclosed by the invention is advantaged in that the feedback of the load of the air conditioning system is rapid and accurate.

Various embodiments of a parking cooler are provided which may be operated from battery power, for example during engine off operation. Further, the parking cooler or air conditioning system may have varying cooling capacities based on operating modes in order to maximize performance or maximize battery life. The parking cooler may include one or more condensers and a housing to accommodate such variation of cooling capacity.

An air-conditioning system for an aircraft includes a compressed air branch for conveying externally supplied and pressurized air, preferably bleed air. Furthermore, a cooling circuit for conveying preferably liquid refrigerant is provided and extends through a ram air duct. The system also includes a first heat exchanger for the heat transfer between the compressed air branch and the cooling circuit, a compressed air turbine arranged in the compressed air branch and a cooling circuit compressor arranged in the cooling circuit and mechanically coupled to the compressed air turbine. The system can have a modular design and be positioned at optimal locations in the aircraft due to the separation of the compressed air branch and the cooling circuit. In this way, the length of hot compressed air ducts can be shortened.

The invention discloses a multi-split air conditioning system which comprises an outdoor unit, an indoor unit and a wire controller. The outdoor unit and the indoor unit are in communication connection through a first network layer, the indoor unit and the wire controller are in communication connection through a second network layer, the first network layer and the second network layer form a communication network together, and the communication network carries out communication through a CAN bus protocol. According to the multi-split air conditioning system, the layered communication network used for carrying out data transmission among various devices in the multi-split system on the basis of a CAN communication mode is built, all nodes formed by the outdoor unit, the indoor unit and other devices in the network are equal, all the nodes can send data through the communication network at any time when the network is idle, communication efficiency is high, and instantaneity is high. The communication network is layered, good in expansibility and flexible in networking and facilitates centralized monitoring and control of the multi-split air conditioning system.

The invention discloses a method for controlling distribution of refrigerants of indoor units of an air conditioning system. The process of the method is as follows: when multiple indoor units of the air conditioning system run in the heating mode, refrigerant temperatures at heat exchanger inlets of the indoor units running in the heating mode are acquired at the preset time interval; the average temperature value of the acquired refrigerant temperatures of the multiple indoor units is calculated; when differences between the refrigerant temperatures of certain indoor units and the average temperature value are larger than a preset temperature difference, current distribution of the refrigerants of the indoor units is judged to be uneven. The invention further provides a device for controlling distribution of the refrigerants of the indoor units of the air conditioning system. The method and the device solve the problem of uneven distribution of the refrigerants due to erroneous judgement of the flow of the refrigerants of the indoor units of the multi-split air conditioning system.

The invention provides a three-phase energy storage method of a solar air conditioner, and belongs to the field of solar air conditioners. An absorbing type refrigerating working pair serves as an energy storage medium, a three-phase energy storage device is connected with a generator in a solar absorbing type refrigerating system in parallel, a solar heat collecting medium provides heat for the three-phase energy storage device and the generator, surplus solar collected heat is stored in the three-phase storage device in an energy storage medium chemical potential energy mode by adjusting the flow of the heating collecting medium entering the three-phase energy storage device in real time, and good matching of a drive heat source and an air conditioner load is achieved. The three-phase energy storage method avoids the dangers brought by crystallization during serial connection of a two-phase energy storage device and a generator in the prior art, the load adjusting function of the solar air conditioner can be achieved through an energy storage system by means of gas-liquid-solid three-phase high energy storage density, and the crystallization rate of 50% enables the size of the energy storage device to be reduced by more than a half than the size of an energy storage device in a two-phase energy storage mode. The system is simple, adjustment is convenient and flexible, the amount of released cold is stable, and a common solar air conditioning system can be easily improved into an energy storage air conditioning system.

The invention discloses a solar air-conditioning system and a control method thereof. The solar air-conditioning system comprises a solar cell array, a photovoltaic converter and an air-conditioning unit. The photovoltaic converter comprises a booster circuit, a rectification and inversion grid-connected circuit and a control circuit, wherein the booster circuit is used for controlling the solar cell array to output the maximum power through maximum power output control signals, and the rectification and inversion grid-connected circuit is used for switching rectification and inversion grid-connected working states through state switching control signals, so that energy of a public electric network and energy of the solar cell array are used for supplying power to the air-conditioning unit, and the energy of the solar cell array is controlled to be fed back to the public electric network. By the adoption of the solar air-conditioning system and the control method of the solar air-conditioning system, the problems that excessive energy output by a solar cell array in the prior art can not be fed back the power grid and high costs are caused by the adoption of a storage battery are solved, and the effects that the excessive energy of solar power generation is fed back to the power grid, meanwhile, the power grades of an air conditioner are expanded, and the cost is reduced are achieved.

The invention discloses a heating control method of an air conditioning system. The heating control method includes the following steps that when the air conditioning system operates in the heating mode, the temperature of a coil pipe of an indoor heat exchanger is obtained; corresponding wind speed gears and / or frequency gears are selected to operate according to the temperature range where the temperature of the coil pipe of the indoor heat exchanger is located; till in the continuous preset time when the temperature of the coil pipe is lower than or equal to a first temperature and higher than or equal to a second temperature, an indoor fan of the air conditioning system is controlled to operate in a medium wind gear and / or a compressor is controlled to operate in a medium frequency gear. The invention further discloses the air conditioning system and a computer readable storage medium. The air conditioning system, the heating control method and computer readable storage medium can solve the problem that the air conditioning system is poor in heating effect under a low temperature environment.

The invention belongs to the field of air conditioners and particularly relates to an air conditioning system and a monitoring method and device of refrigerant leakage of the air conditioning system. In the operation process of the air conditioning system, real-time operation frequency Fr1 and real-time exhaust temperate Tp of a compressor are compared with a preset maximum frequency value Fr and a preset temperature protection threshold Tmax which correspond to real-time outdoor environment temperate, when Fr1 is smaller than Fr-N and Tp is larger than Tmax, it is judged that refrigerant may leak, whether refrigerant leakage of the air conditioning system happens or not can be monitored in advance in real time, and under the condition that it is judged that the refrigerant may leak, the refrigerant leakage detection confirmation step preferentially and automatically starts, so that little leakage of a small amount of refrigerant can be conveniently and effectively detected in time, and the adverse consequence that the effect of the air conditioning system becomes poor due to further leakage of the refrigerant, and accordingly user experience is affected is avoided.

The hybrid solar air-conditioning system includes an air intake having an air drying system that uses a liquid desiccant to dry ambient air, a desiccant regeneration system that uses a heat exchanger having oil heated by solar energy to remove water from the desiccant, an indirect evaporative air conditioner that uses an air-air heat exchanger to cool the dried air indirectly with evaporatively cooled air, a distilled water recovery system to recover water from the desiccant and from the evaporatively cooled air in the form of distilled water, and a microprocessor-based controller to control room temperature and relative humidity, and to regulate air intake and the flow of desiccant and oil in the system. The hybrid system enables the use of evaporative cooling in regions having high humidity.