171results about How to "Improve operating energy efficiency" patented technology

The invention provides a GRNN-based water chilling unit energy efficiency model modeling method and a water chilling unit group-control method based on cold load prediction and a water chilling unit energy efficiency model, and belongs to the field of water chilling unit energy saving. The water chilling unit energy efficiency model is established by using a GRNN technology and actual operating data of a refrigeration system, so that the energy consumption of the water chilling unit under different operating conditions can be predicted quickly and accurately. The operating unit number and theload rate distribution of the water chilling unit are optimized in real time by using the cooling load prediction data and the water chilling unit energy efficiency model with a goal of minimum systemenergy consumption, so that the operation energy efficiency of the refrigeration system is effectively improved.

The invention discloses a frequency control method and system for an electric frequency conversion heat pump hot water machine compressor. The method includes the steps that the outlet water temperature of a heat exchanger and the water tank temperature of a water tank are detected; the set temperature of the outlet water of the heat exchanger is generated according to the temperature of the water tank; control over the frequency of the frequency conversion compressor is conducted according to the outlet water temperature and the set outlet water temperature of the heat exchanger. According to the frequency control method and system of the frequency conversion heat pump hot water machine compressor, the mode that control over the frequency of the compressor through the outlet water temperature of the heat exchanger is provided, the operation frequency of the frequency conversion compressor can be lowered effectively, the unit operation energy efficiency is improved, and the reliability of the compressor is guaranteed on the condition that the outlet water temperature is constant is guaranteed.

The invention discloses a CO2 transcritical cascading heat pump system and an interstage compressor capacity matching method thereof. The matching scheme of gas displacement of a compressor in two-stage system design is optimized according to different work environments of CO2 / a CO2 cascading heat pump system, so that the cascading heat pump system runs under the condition of the highest energy efficiency ratio. The cascading heat pump system is a CO2 transcritical system at the high-temperature grade and is a CO2 subcritical system at the low-temperature grade, and the temperature of an outlet of a high-temperature-grade gas cooler, the heat exchange temperature difference in an intermediate heat exchanger and low-temperature-grade evaporating temperature serve as working condition temperature variables. High-temperature-grade evaporating temperature and high-temperature-grade exhaust pressure in the intermediate heat exchanger are controlled, and the optimal interstage compressor capacity matching method of the cascading heat pump system under different working condition temperature variables is provided.

The invention provides an ejection refrigerating cycle device which comprises a compressor, an outdoor heat exchanger, a gas-liquid separator, an indoor heat exchanger, an ejector, a first electronic expansion valve and a second electronic expansion valve. An exhaust port of the compressor is connected with the outdoor heat exchanger through a pipeline, the other end of the outdoor heat exchanger is connected with the first electronic expansion valve through a pipeline, and the other end of the first electronic expansion valve is connected with the gas-liquid separator through a pipeline. The gas-liquid separator is provided with a gas outlet and a liquid outlet, the gas outlet is connected with a first inlet of the ejector, and the liquid outlet is connected with the second electronic expansion valve through a pipeline. The other end of the second electronic expansion valve is connected with the indoor heat exchanger, the other end of the indoor heat exchanger is connected with a second inlet of the ejector, and an outlet of the ejector is connected with a gas suction port of the compressor through a pipeline. When the working condition of the air conditioner is changed, the working medium state and flow of the first inlet of the ejector are adjusted through the first electronic expansion valve, the application working condition range of the ejector is widened, the application efficiency of the ejector is increased, and operation energy efficiency of the air conditioner is increased.

The present invention relates to the technical field of green building energy efficiency evaluation methods, in particular to an energy efficiency evaluation and diagnostic analysis method for green public A diagnostic analysis method for building energy efficiency; an energy efficiency evaluation method for the operation phase of the green public building. The method of the present invention has real-time and versatility: a hierarchical evaluation index system that characterizes the operating state of the green building is established relatively completely, through the processing of operating data and historical data, corresponding monitoring indicators and statistical indicators can be determined, and based on The comparison of design data and evaluation benchmarks of relevant standards and specifications can comprehensively evaluate the energy utilization level of green buildings in the operation stage; at the same time, the method of the present invention can carry out classified diagnosis according to the factors affecting energy efficiency in operation, and carry out process-based diagnosis according to the influence rules, providing Reasonable suggestions for optimizing operation.

The invention provides a control system and a control method for a central air conditioning cold station. The central air conditioning cold station comprises a plurality of cold station device groups. The control system comprises a plurality of control modules. The control modules are correspondingly connected with one or more cold station devices in the cold station device groups, and are used for controlling the operation parameters of the cold station devices. The control modules are also used for sending the parameter demand change values of the cold station device groups to the other control modules correspondingly connected with the cold station device groups when the operation number of the cold station devices in the cold station device groups controlled by the control modules changes, so as to adjust the operation number of the cold station devices in the cold station device groups controlled by the control modules according to the parameter demand change values by the other control modules. Since one control module is only connected with one cold station device, all that is needed is to connect the control modules according to the connection relations between the cold station devices in a water system, and the development period and the human input can be reduced; and moreover, the operation energy efficiency of the central air conditioning cold station can be improved, and the energy consumption of the central air conditioning cold station is reduced.

The invention provides an air conditioner without dripping water. The air conditioner comprises a compressor, a four-way reversing valve, an outdoor heat exchanger, a throttling mechanism, an indoor heat exchanger, a liquid two-way valve, a steam three-way valve, a liquid pipe, a gas pipe, a liquid pipe joint, a gas pipe joint, an indoor unit water basin, a water pipe joint, a water pipe, a water pipe plug connector, a water distributor and an outdoor unit water basin, wherein one end of the indoor heat exchanger is connected with one end of the gas pipe through the gas pipe joint; the other end of the gas pipe is connected with the four-way reversing valve through the steam three-way valve; the other end of the indoor heat exchanger is connected with one end of the liquid pipe through the liquid pipe joint; the other end of the liquid pipe is connected with the throttling mechanism through the liquid two-way valve; the indoor unit water basin is connected to one end of the water pipe through the water pipe joint; the other end of the water pipe is connected with the water distributor through the water pipe plug connector; the outdoor unit water basin is arranged on the lower part of the outdoor heat exchanger. According to the air conditioner, the situation that an adverse effect is caused to the daily life of neighbors downstairs due to water dripping of the air conditioner can be avoided.

The invention provides an air conditioner oil return control method and device and an air conditioner. The air conditioner oil return control method comprises the steps that when the oil discharge amount in an oil separator reaches a preset value, an electromagnetic valve is started to return oil; the temperature of an oil return capillary tube after oil return is obtained; and when the temperature after the oil return and the preset theoretical oil return temperature meet the preset condition, the electromagnetic valve is turned off to stop returning the oil. According to the control method,the oil amount in the oil separator is subjected to detection and calculation, when the oil amount in the oil separator reaches the threshold value, the electromagnetic valve is started to return theoil through the oil return capillary tube, the temperature of the oil return capillary tube after the oil return is monitored, the actual oil return temperature is compared with the theoretical oil return temperature so that it can be effectively judged that a refrigerant passes through the oil return capillary tube, then the electromagnetic valve is turned off when the refrigerant passes throughthe oil return capillary tube, the situation that the excessive refrigerant passes through bypasses of the oil return capillary tube and goes back to a compressor for doing invalid work is avoided, then the running effect of an air conditioner unit is improved, and the energy consumption is reduced.

The invention discloses an air conditioning system cold load prediction method and a cold water unit group control strategy. The method comprises the steps that the cold load increment delta Qyx (t) from the moment t to the moment t-tau is calculated; a model is established and meteorological parameters of t-tau, t and t + tau are collected and are substituted into the cold load theoretical calculation values of the moments, and then the cold load theoretical calculation increment delta Qjs (t), delta Qjs (t + tau) between the two time periods and t moment correction coefficient gamma = deltaQjs (t) / delta Qyx (t); and according to the formula of Qyc (t + tau) = Qyx (t) + delta Qjs (t + tau) / gamma, a cold load prediction value of t + tau is obtained. Subsequently, on the basis of Qyc (t + tau), the cold water unit group control strategy at the moment t + tau is determined. According to the method and the strategy, an air conditioner running actually measured cold load at the momentt is taken as a prediction starting point, the cold load theory calculation model is combined for use, so that the air conditioner cold load is predicted at the moment t + tau, then the cold water unit group control strategy is adjusted, and the running energy efficiency of a cold water unit is improved.

The invention discloses a multiple on-line system and a control method thereof. The multiple on-line system comprises an outdoor unit, multiple indoor units and a refrigerant amount adjusting device.The outdoor unit comprises a compressor, a four-way valve, an outdoor heat exchanger and an outdoor throttling valve; the refrigerant amount adjusting device comprises an intermediate heat exchanger,an adjustable throttling valve, an electromagnetic valve and a gas-liquid separator, and is used for enabling the refrigerant amount to reach to the appropriate state through controlling the electromagnetic valve to be opened and adjusting the opening degree of the adjustable throttling valve when the refrigerant amount of the multiple on-line system is excessive or in shortage. According to the multiple on-line system provided by the embodiment of the invention, not only can the energy efficiency of system operation be improved, but also the liquid impact problem produced by liquid return ofthe compressor can be avoided, and the system operation reliability is improved.

The invention provides a preparation method of a foamed nickel-loaded amorphous phosphorus doped nickel molybdate bifunctional electrocatalytic electrode and an application thereof, and belongs to thetechnical field of hydrogen energy and fuel cells. The preparation method comprises the following steps: soaking foamed nickel into an HCl solution, removing metal oxide on the surface, soaking the pickled foamed nickel into a phosphomolybdic acid aqueous solution, carrying out a spontaneous oxidation-reduction reaction, taking out, washing with deionized water, and drying for later use, therebyobtaining the foamed nickel-loaded amorphous phosphorus-doped nickel molybdate nanostructure. The foamed nickel is etched by using the phosphomolybdic acid aqueous solution, and can be directly used after drying, the material can be used as a bifunctional electrode material for urea electrooxidation and water and electricity reduction; a urea electrooxidation reaction with low oxidation potentialis used for replacing an electrocatalytic oxygen evolution reaction, a two-electrode urea auxiliary electrolysis hydrogen production system based on a bifunctional electrocatalyst is constructed in analkaline solution, low-cost, low-energy-consumption and stable electrochemical hydrogen production is achieved, and the method is suitable for large-scale industrial electrochemical hydrogen production application.

The invention relates to a large temperature difference air conditioning system for heat extraction of a data center and a using method thereof. The large temperature difference air conditioning system for heat extraction of the data center comprises an air-watermeter cooler, a cooling tower unit, and at least two stage mechanical compression type refrigerating units. The cooling tower unit comprises a heat exchanger, a circulating pump and a cooling tower. Each stage mechanical compression type refrigerating unit comprises an evaporator, a compressor, a condenser and a throttling valve. An air inlet of a shell of the air-watermeter cooler is connected with an air outlet of the data center, and an air outlet of the shell of the air-watermeter cooler is connected with an air inlet of the data center. A water outlet of a heat exchange tube of the air-watermeter cooler is connected with a water inlet of the shell of the heat exchanger of the cooling tower unit. A water outlet of the shell of the heat exchanger is connected with a water inlet of a shell of the evaporator of each first stage mechanical compression type refrigerating unit. The water outlet of the shell of the evaporator is connected with a water inlet of the shell of the next evaporator. Finally, the water outlet of the shell of the last evaporator is connected with the water inlet of the shell of the air-watermeter cooler through another circulating pump. According to the large temperature difference air conditioning system for heat extraction of the data center and the using method thereof provided by the invention, the circulating water supply flow and power consumption are effectively reduced, and the large temperature difference air conditioning system for heat extraction of the data center can be widely applied to the heat extraction process of various large and medium data centers.

The invention relates to a system for real-time monitoring and evaluating the operation energy efficiency of an industrial air compression station. The system comprises an industrial air compression station operation energy efficiency monitoring system and an operation energy efficiency evaluating system, wherein the industrial air compression station operation energy efficiency monitoring system is used to measure the compressed air flow of the air compression station, acquires pressure difference of various sections of an air compression system of the industrial air compression station through pressure sensors, and acquires current values of the driving motor of each air compressor, the industrial air compression station operation energy efficiency evaluating system is used to accurately evaluate the operation energy efficiency level of the air compression station. The system solves the major problems existed in a conventional system for monitoring and evaluating the operation energy efficiency of an industrial air compression station, such as lack of reasonable evaluation criteria for evaluating actual operation efficiency of the industrial air compression station, impossibility of accurately evaluating the energy-saving operation potential of the industrial air compression station, and lack of convenient and rapid flow measuring equipment that can be installed without stopping a device. A comprehensive and reasonable industrial air compression station operation energy efficiency evaluation method is provided, and the system has importance practical meanings.

The invention discloses an air conditioner and a controlling method, and belongs to the technical field of air conditioners. The air conditioner comprises a controller, a humidity sensor and a variable-capacity compressor assembly, wherein the variable-capacity compressor assembly comprises a variable-capacity compressor; the air conditioner also comprises a solution dehumidification assembly for dehumidifying an indoor environment; and the controller is used for acquiring the humidity of the indoor environment, controlling the variable-capacity compressor assembly to operate in a double-cylinder mode when the indoor environment humidity is more than or equal to preset humidity threshold, and controlling to increase the flow capacity of the dehumidification solution which flows through the solution dehumidification assembly. The air conditioner provided by the invention adopts the variable-capacity compressor and the solution dehumidification assembly for dehumidifying the indoor environment; moreover, according to the indoor humidity condition, the operation mode of the variable-capacity compressor is switched, and the solution dehumidification assembly is controlled to dehumidify the indoor environment to ensure that cooling medium output by the compressor can meet requirements on indoor heat exchange and reduction of dehumidification solution, so that the integral operation energy efficiency of the air conditioner is improved.

The invention discloses an intelligent air conditioner monitoring system. The intelligent air conditioner monitoring system comprises an air conditioner arranged in a room, a gateway, an energy-efficiency socket, a first temperature sensor, a second temperature sensor and a cloud server which is used for monitoring analysis of operation of the air conditioner; the air conditioner is connected withthe energy efficiency socket; the first temperature sensor is arranged in the room; the second temperature sensor is arranged out of the room; the gateway is arranged at a position of which the distance from the room is identical to the distance from a position out of the room; the energy efficiency socket, the first temperature sensor and the second temperature sensor are separately connected with the gateway through signals; the gateway is connected with the cloud server through signals; operation data of the air conditioner and environment temperature are monitored and acquired through thecloud server; data mining and data analysis are performed based on cloud calculation; intelligent anomaly detection for cooling / heating energy efficiency of the variable-frequency air conditioner canbe realized; a situation that the energy efficiency of the air conditioner is lowered can be discovered by users in time; the operation energy efficiency of the air conditioner is improved by adopting diagnosis regulation measures; power utilization comfort of the users is improved; electric energy is saved; and electricity cost is reduced.

The invention discloses an air conditioner and a control method, and belongs to the technical field of air conditioners. The air conditioner comprises a controller, a temperature sensor, an electric control component and a capacity-variable compressor assembly, wherein the electric control component is arranged on an outdoor unit of the air conditioner. The capacity-variable compressor assembly comprises a capacity-variable compressor. The air conditioner further comprises a heat-dissipating pipe set, wherein the heat-dissipating pipe set is connected to a refrigerant circulation pipeline and used for conducting heat dissipation on the electric control component. The controller is used for acquiring the outdoor environment temperature, controlling the capacity-variable compressor to work in a double-cylinder mode and controlling the flow of the refrigerant flowing through the heat-dissipating pipe set to be increased when the value of the outdoor environment temperature is greater than or equal to the preset temperature threshold. According to the air conditioner, the capacity-variable compressor and the heat-dissipating pipe set which is used for conducting heat dissipation on the electric control component are adopted, the operation modes of the capacity-variable compressor are switched according to the outdoor temperature conditions, the heat dissipation pipe set is controlled to conduct heat dissipation on the electric control component so as to enable the refrigerant outputted by the compressor to meet the requirements for indoor heat exchange and heat dissipation of the electric control component, and therefore the overall operation energy efficiency of the air conditioner is improved.

The invention discloses a non-stop defrosting running method of an air conditioner. The non-stop defrosting running method of the air conditioner comprises the following steps: controlling the heating running of the air conditioner; detecting a temperature difference between indoor temperature and set temperature; controlling the adjustment of the working state of an outdoor heat exchanger according to the temperature difference; when the outdoor heat exchanger is adjusted to a preset condition, detecting the temperature of an outdoor coiled pipe; and adjusting the working state of the outdoor heat exchanger according to the temperature of the outdoor coiled pipe, enabling one of a first outdoor heat exchanger and a second outdoor heat exchanger to carry out heat absorbing running, and enabling the other to carry out heat release defrosting running. According to the technical scheme, the non-stop defrosting running of the air conditioner can be realized, and the comfort of the air conditioner is improved.

The invention relates to a medium-deep layer geothermal energy and solar energy coupled zero-emission heat supply system. The technical problem that in the prior art, design is not reasonable enough is solved. The system comprises a power generation unit, an energy storage unit and an energy consumption unit, the power generation unit is provided with a middle-deep layer buried pipe heat exchange device, a solar photo-thermal heat collection device and a photovoltaic power generation system, the energy storage unit is provided with an electric heat storage boiler, the middle-deep layer buried pipe heat exchange device is connected with the electric heat storage boiler and / or the energy consumption unit through a middle-deep layer geothermal heat pump, the solar photo-thermal heat collection device is connected with the electric heat storage boiler and / or the energy consumption unit, the photovoltaic power generation system is connected with electricity storage equipment, and the electricity storage equipment is connected with the electric heat storage boiler, the middle-deep layer geothermal heat pump and the energy consumption unit. The system has the advantages that a composite efficient heat supply and heat storage system is achieved, and zero emission of the whole set of northern centralized heat supply system is achieved through ultralow-energy-consumption centralized heat supply and obtaining of clean electric power capable of being generated at the same time.

The invention relates to a solar-ground source heat pump coupled energy supply system and an operating method thereof. A large unit, a small unit and solar hot water are adopted to supply heat to a building, the two units are interconnected and intercommunicated at the tail end and ground source side of the building, the heat is supplied to the building under various modes by using two ground source heat pump systems and the solar hot water according to an actual thermal load requirement, the operation mode of the system is optimized under the condition of ensuring that the soil temperatures of the ground source heat pumps are balanced, and efficient operation for cooling in summer and heating in winter is realized. When bearing an extremely low heat supply load within a relatively long period of time, the heat supply requirement of the building is met through supplying heat by solar-assisted ground source heat pumps and directly supplying heat by solar energy; and when bearing a normal heat supply load, the heat supply requirement of the building is met by using a pure ground source heat pump unit.

The invention discloses a solar solution dehumidification radiation air conditioning system and relates to the technical field of air conditioning. The solar solution dehumidification radiation air conditioning system includes a solar energy solution dehumidification fresh air system and a capillary network radiant cooling and heating system. An auxiliary heating device is arranged in a layered heat insulation water tank inside the solar energy solution dehumidification fresh air system, the two ends of the layered heat insulation water tank are connected with a first water pump and a solar thermal collector sequentially through a water pipe, the two ends of the layered heat insulation water tank are connected with a second water pump and a first heat exchanger sequentially through a waterpipe, and the two ends of the first heat exchanger are connected with a solution pump, a solution regeneration tower, an electric three-way valve, a concentrated solution tank, a first solution pump,a second heat exchanger, a solution dehumidification tower, a second solution pump and a dilute solution tank. An air cooled heat pump inside the capillary network radiant cooling and heating system,a capillary network and a third water pump are sequentially connected through a water pipe. The solar solution dehumidification radiation air conditioning system is available all year round, can independently control the indoor temperature and humidity, can scientifically and effectively improve energy utilization rate and reduce environmental destruction.

The invention discloses a non-shutdown defrosting operation method for an air conditioner. The non-shutdown defrosting operation method for an air conditioner comprises: controlling heating operation of the air conditioner; detecting an outdoor environment temperature; adjusting a working state of an outdoor heat exchanger according to the outdoor environment temperature; when the outdoor heat exchanger is adjusted to a preset condition, detecting a temperature difference between an indoor temperature and a set temperature; and adjusting a working state of the outdoor heat exchanger according to the temperature difference. According to the technical solution above, a proper control manner can be selected in an operation process of the air conditioner, operation energy efficiency of the air conditioner is improved and non-shutdown defrosting is realized.

The invention discloses a refrigeration device, comprising a first compressor, a second compressor, a first heat exchanger, a second heat exchanger and a flash vaporization device; the flash vaporization device is connected between one end of the first heat exchanger and one end of the second heat exchanger, and an exhaust port of the flash vaporization device is connected to an air suction port of the first compressor; the other end of the first heat exchanger is connected to an exhaust port of the first compressor and is selectively connected to an exhaust port of the second compressor; the other end of the second heat exchanger is connected to an air suction port of the second compressor and is selectively connected to the air suction port of the first compressor; and the exhaust port of the second compressor is selectively connected to the other end of the first heat exchanger. The refrigeration device of embodiments of the invention has multiple working modes to adaptive various load requirements and is wide in operation range, and the refrigeration device is high in actual operation energy efficiency and good in energy-saving effect.

The invention relates to a solar energy-ground source heat pump coupling type energy supply system provided with two buried pipe groups. The solar energy-ground source heat pump coupling type energy supply system provided with the two buried pipe groups is characterized in that the energy supply system comprises a solar heat collector, a heat-storage water tank, a ground source heat pump unit, the first buried pipe group, the second buried pipe group, a building tail end device, a heat-collection circulating water pump, a heat-storage circulating water pump, a ground source side circulating water pump, a first heat-storage control valve, a second heat-storage control valve, a first ground source side control valve, a second ground source side control valve, a first pipe group flow regulation valve, a second pipe group flow regulation valve, a first pipe group heat meter and a second group pipe heat meter; the solar heat collector is sequentially connected with the heat-storage water tank and the heat-collection circulating water pump through pipelines, namely a heat collection cycle is formed, and hot water generated by solar energy is collected; and the hot water outflow end of the heat-storage water tank is sequentially connected with the first heat-storage control valve, the heat-storage circulating water pump, the first buried pipe group, the second heat-storage control valve and the backflow end of the heat-storage water tank through pipelines, so that a heat storage cycle is formed.

The invention discloses a non-stopping defrosting running method of an air-conditioner. The non-stopping defrosting running method comprises the steps that the air-conditioner is controlled to conduct heating operation; the outdoor environment temperature is detected; the working state of an outdoor heat exchanger is adjusted according to the outdoor environment temperature; when the outdoor heat exchanger is adjusted to meet the preset condition, the outdoor coiler temperature is detected; and the working state of the outdoor heat exchanger is adjusted according to the outdoor coiler temperature, and therefore one of a first outdoor heat exchanger body and a second outdoor heat exchanger body runs to absorb heat, and the other one of the first outdoor heat exchanger body and the second outdoor heat exchanger body runs to release heat for defrosting. According to the technical scheme, an appropriate control mode can be selected in the air-conditioner running process, the running energy efficiency of the air-conditioner is improved, and non-stopping defrosting is achieved.

The invention relates to a method for controlling cooling tower outlet water temperature according to outdoor air state, which is characterized by comprising the following steps: 1) determining the lowest outlet water temperature of the cooling tower and the maximal efficiency of the cooling tower according to the properties of the refrigerating unit and cooling tower; 2) measuring and obtaining the outdoor air state; 3) calculating the cooling tower efficiency in the current state; 4) correspondingly adjusting the switch of the cooling tower fan motor and the by-pass valve of the frequency converter and cooling tower according to the actual cooling tower efficiency and outdoor air state; and 5) repeating the steps 1)-4) at time intervals T (T is usually 5 minutes to 3 hours). By using the method, the outlet water temperature of the cooling tower changes as the outdoor air state changes, thereby keeping the lowest outlet water temperature value of the cooling tower and enhancing the actual operation energy efficiency of the refrigerating machine. The method obviously enhances the operating efficiency of the refrigerating unit, and has the characteristic of energy saving.

The invention discloses an underground soil cold-heat balance system suitable for a soil source heat pump in an extremely-cold region. The underground soil cold-heat balance system comprises a solar heat collection system, a soil source heat pump system, an indoor heating system, a first electric valve and a second electric valve. The solar heat collection system comprises a solar heat collector, an energy storage water tank and a solar circulation water pump. The soil source heat pump system comprises a soil source heat pump host, a soil source heat exchanger and a soil source circulation water pump. The indoor heating system comprises a heating circulation water pump and heating terminal equipment. According to the underground soil cold-heat balance system suitable for the soil source heat pump in the extremely-cold region, cold-heat balance of underground soil can be achieved, meanwhile, the operating energy efficiency of the soil source heat pump system is improved, and stable, safe and efficient operating of the soil source heat pump system is achieved.

The invention discloses a gas use peak adjusting method for a heating system. The heating system comprises a heating loop, a heat storage loop and a heat release loop; a gas boiler, a second electrictwo-way valve, a heat storage tank, a heat storage circulating pump and a first electric two-way valve are arranged on the heat storage loop in sequence according to a fluid circulating direction; a heat storage tank, a heat storage circulating pump, a third electric two-way valve and a heat exchanger are arranged on the heat release loop in sequence according to a fluid circulating direction; a primary side of the heat exchanger is connected to the heat release loop; and a secondary side of the heat exchanger is connected with the gas boiler in parallel. The method comprises the following steps: in the gas use valley period, the heat storage tank stores redundant heat generated by the gas boiler; and in the gas use peak period, the heat storage tank releases the heat to the heat exchanger, and the heat exchanger and the gas boiler provide the heat to a heat exchange unit together to reduce the gas use demands of the gas boiler. The gas use demands in the gas use peak period of naturalgas in cities can be greatly reduced.

The invention provides a CNN-LSTM-based building energy consumption prediction method and system, and the method comprises the steps of employing building energy consumption sequence data obtained by a building energy consumption collection module and data of related influence factors as a data basis, carrying out the preprocessing of the data, and reconstituting a data format needed by a training algorithm; setting a convolutional neural network (CNN) as a feature extraction layer, adopting a structure in which one-dimensional convolution is performed in a feature direction, and then modeling the time sequence of data by using a long short-term memory (LSTM) network; and obtaining a predicted value of the building energy consumption through the model and new input data. By using the algorithm provided by the invention, high-precision prediction of building energy consumption can be realized, and a reference value is provided for optimization of building operation.

The invention provides a solid adsorption technology based frostless air source heat pump system. The solid adsorption technology based frostless air source heat pump system comprises an air channel, a compressor, a condenser, a drying heat exchanger, an evaporator and a fan. The air channel is in a shape of a Chinese character 'ao', two shoulder portions of the air channel are respectively provided with an air outlet and an air inlet, and two mutually parallel side walls, perpendicular to the air inlet direction, on the air channel are respectively the first air channel side wall and the second air channel side wall. The drying heat exchanger, the evaporator, the fan, a first air valve, a second air valve, a third air valve and a fixing device are arranged in the air channel. The solid adsorption technology based frostless air source heat pump system can avoid evaporator frosting, and the operating energy efficiency of the system is improved. Under the moisture absorption effect of a drying agent, the moisture content of air undergoing heat exchange of the evaporator is reduced, the dew point temperature of the evaporator is reduced and is made lower than evaporation temperature, and the frostless operating effect of the evaporator is achieved.

The invention provides a heat exchange system and a control method. The heat exchange system comprises a first four-way reverse valve, a second four-way reverse valve, a first indoor heat exchanger, asecond indoor heat exchanger, an outdoor heat exchanger, and a compressor with a first cylinder and a second cylinder. As joints of the first four-way reverse valve and the second four-way reverse valve are associated, refrigerants discharged from the compressor firstly enter the first four-way reverse valve, and then, enter the second four-way reverse valve through a pipeline or other part, whenrefrigeration and heating operation modes of the heat exchange system are switched, the joint communicating state of the first four-way reverse valve is firstly switched, then, the joint communicating state of the second four-way reverse valve is switched to smoothly and reliably realize switching of the operation modes of he heat exchange system, and the switching failure problem is prevented. Through gradient cooling and dehumidification treatment of indoor returned air, the operation energy efficiency of the system is improved under the condition of guaranteeing the refrigerating capacityand the dehumidifying capacity of the system.