37results about How to "Reduce transmission and distribution energy consumption" patented technology

The invention relates to the technical field of air conditioning devices in civil and industrial projects, in particular to a solution type full-air air conditioning unit equipped with a cold source and a heat source completely. A cold source unit or a heat source unit can prepare and output refrigerants/cold water or heating media/heat water and can provide all cold energy and heat energy for the unit for processing thermal-humidity load of air without being connected with other cold sources or heat sources. A full-air unit can perform cooling and dehumidification processing or heating and humidification processing on fresh air and mixed air. The cold source unit or the heat source unit comprises a compressor, an expansion valve and a refrigerant circulation pipeline, wherein the refrigerant circulation pipeline comprises a first main pipeline, a second main pipeline, a third main pipeline and a fourth main pipeline. The first main pipeline is connected with a fresh air thermal-humidity processing unit through a first refrigerant input branch pipeline. The fresh air thermal-humidity processing unit is connected with the input end of the compressor through the second main pipeline. A second refrigerant input branch pipeline is connected with a mixed air heat humidity processing unit. Refrigerants flowing back from the mixed air thermal-humidity processing unit flow to the second main pipeline from a second refrigerant output branch pipeline.

The invention pertains to heating and hot water supply field, relating to a high efficiency large temperature rise compression heat pump set with a big inlet-outlet temperature difference at both a heat sink side and a head source side. The large temperature rise compression heat pump set is configured by assembling two water source heat pump devices, and each heat pump set comprises separately in series or in parallel a compressor, a condenser, an evaporator, a subcooler, and a throttling device, or an added economizer, and forms a separate working medium circulation loop. The inventive large temperature rise compression heat pump set can heat returned hot water step by step from a low temperature to a high temperature, the cold water is cooled step by step in a reverse direction of the temperature rise of the cooling water, and temperature difference between the hot water and cold water at the inlet and outlet of the heat pump is enlarged; and the performance coefficient of the heat pump set is further enhanced comparing with a simple two-stage compression heat pump in series, so that the comprehensive energy utilization efficiency and economy of the inventive system are increased greatly comparing with a common heat pump set.

The invention provides a biomass combined heat and power generation system capable of recycling steam exhaust and smoke waste heat at the same time, and belongs to the technical field of biomass energy use. The system comprises a biomass boiler, a steam turbine, a steam exhaust heat exchanger, a condenser, a cooling tower, a boiler water supply heater, a smoke emission reduction and waste heat recycling integrated unit, a smoke spraying water heat exchanger, a chimney, a power grid, an end electric heat pump, a user heat exchanger, a connecting pipeline and a valve. The smoke emission reduction and waste heat recycling integrated unit comprises a desulfurizing tower and a waste heat recycling tower; the electric heat pump mixed water heat supply manner is adopted on the user side to reducethe heat supply network water returning temperature, through direct heat exchange, smoke condensation latent heat and steam exhaust waste heat in a power plant can be recycled in a gradient manner, the heat supply capacity of a biomass power plant can be increased, and the optimal biomass energy comprehensive use efficiency is obtained.

The invention relates to the technical field of air conditioners, in particular to a refrigeration dehumidifying all-air conditioning unit with all cold and heat sources. The refrigeration dehumidifying all-air conditioning unit comprises a cold or heat source unit, an all-air heat and moisture treatment unit and a heat recovery unit, the all-air heat and moisture treatment unit comprises a fresh air heat and moisture treatment unit and a mixed air heat and moisture treatment unit, the cold or heat source unit is sued for providing all cold or heat quantity for treatment of air heat and moisture load, the temperature of the fresh air can be reduced by the fresh air heat and moisture treatment unit, fresh air can be dehumidified or heated and humidified by the fresh air heat and moisture treatment unit, the temperature of the mixed air of return air and the fresh air can be reduced by the mixed air heat and moisture treatment unit, and the mixed air can be dehumidified or heated by the mixed air heat and moisture treatment unit. By the aid of the structure, cold or heat source devices, cold or heat source machine rooms and transmission and distribution systems among the cold and heat sources and the air conditioning unit can be omitted, cold water and heat water transmission and distribution energy consumption of an air conditioning system is completely omitted, the refrigeration dehumidifying all-air conditioning unit solves the problem of difficulty in distribution and adjustment of cold and heat quantity among the concentrated cold and heat sources and air conditioning zones, and energy is remarkably saved.

The invention relates to the technical field of air conditioning devices in civil and industrial projects, in particular to an air conditioning device capable of treating air heat and humidity load and producing cold water or hot water simultaneously. The air conditioning device comprises a cold or heat source unit and an air heat and humidity treatment unit; the cold or heat source unit is used for treating the air heat and humidity load to provide cold flow or heat flow and producing cold water or hot water delivered to the outside simultaneously; the air heat and humidity treatment unit can perform cooling and dehumidification or heating and humidification on air; the cold or heat source unit comprises a compressor, an expansion valve and a cooling agent circulating pipeline, the cooling agent circulating pipe comprises a first main pipeline, a second main pipeline, a third main pipeline and a fourth main pipeline, the first main pipeline is connected with the air heat and humidity treatment unit through a first cooling agent input branch, the air heat and humidity treatment unit is connected with the input end of the compressor through the second main pipeline, and the first main pipeline is connected with a cold or hot water input end of an in-out unit through a second cooling agent input branch, and used for cooling or heating cold or hot water of the in-out unit.

The invention discloses a fresh air handling unit provided with a cold/heat source without an auxiliary heat exchange device and capable of outputting a refrigerant/heat medium. The fresh air handling unit comprises a cold/heat source unit without the auxiliary heat exchange device, a fresh air heat-humidity treatment unit and a refrigerant/heat medium output unit. The cold/heat source unit without the auxiliary heat exchange device dissipates heat or heats through exhaust air or fresh air and can provide all cold/heat energy for air heat and humidity load treatment of the unit without externally arranging auxiliary heat dissipation or heating devices. The fresh air heat-humidity treatment unit can cool, dehumidify, heat and humidify the fresh air. The refrigerant/heat medium output unit can output the refrigerant/heat medium to provide cold/heat energy to other devices. By means of the fresh air handling unit, centralized cold/heat source equipment, externally-arranged heat dissipation or heating devices, transportation and distribution systems among the cold/heat source and the air conditioning unit or other air treatment terminals can be reduced or omitted, meanwhile transportation and distribution energy consumption of a fresh air system is saved, the problem that cold energy/heat energy distribution and adjustment among the centralized cold/heat source and air conditioner partitions are difficult is solved, and energy is saved remarkably.

The invention discloses a heat multiplication type hot site heat exchanger unit belonging to the field of heat supply and heating. The invention has the technical characteristics that primary side heating medium is firstly connected with an absorption type heat pump unit to serve as a drive source on the basis that the existing intensive heat supply primary side heating medium is converted into secondary side hot water by a heat exchanger, and heat is obtained from the environmental heat source by the absorption type heat pump unit so as to realize the purpose of secondary side heat multiplication. The invention can directly utilize primary side hot water or steam as the heating medium to drive the absorption type heat pump unit to obtain heat from ambient air or water source environment to realize secondary side heat multiplication heat exchange; according to working condition variation, the outlet heating medium of the absorption type heat pump unit can be used to further heat the secondary side hot water flowing out of the absorption type heat pump unit. On the premise of ensuring the using function of the secondary side, the invention reduces primary network supply heat and heating medium flow of unit heating area so as to reduce the size of a heat supply network pipeline and lower primary energy consumption and transportation and distribution energy consumption thereof, so that the invention has obvious energy saving effect.

The invention discloses a low-temperature water supply large-temperature-difference cold source and an air conditioning system. The low-temperature water supply large-temperature-difference cold source and the air conditioning system are characterized in that an air inlet of an indirect evaporative cooling water supply device is provided with a surface cooler; the indirect evaporative cooling water supply device is connected to an inlet of a primary side of a plate heat exchanger, and an outlet of the primary side of the plate heat exchanger is connected to an inlet tube of the surface cooler;a freezing water outlet pipe of an evaporator is connected to a user water supply, and an outlet pipe of a user water return is connected to an inlet of a secondary side of the plate heat exchanger;and an outlet pipe of the surface cooler is connected to a cooling water inlet of a condenser of a mechanical compression type cold water machine, and a cooling water outlet pipe of the condenser is connected to a spraying device of the indirect evaporative cooling water supply device. The low-temperature water supply large-temperature-difference cold source and the air conditioning system have the advantages that the structure is reasonable, the cold water temperature of users is reduced, and the problems that the indirect evaporative cooling water supply device is high in water outlet temperature and the comfort requirement of an air conditioner cannot be met are solved; the capacity of a refrigerating unit is effectively reduced; and the cold amount of the cold water is fully released,the temperature difference of the indirect evaporative cooling water supply device is improved, and the energy-saving performance is obvious.

The invention relates to a central heating system for segmented cooling of multipath backwater of circulating cooling water. The system comprises a heat exchange device, a reheater, a waste heat energy allocating center and water quality and temperature monitoring control equipment. The system is characterized in that the circulating cooling water in a circulating water pipeline successively exchanges heat through the heat exchange device and the reheater to obtain directly used heat, heat is then released in the waste heat energy allocating center, and finally, a closed cycle is formed by means of the water quality and temperature monitoring control equipment. According to the system provided by the invention, waste heat of a process medium originally discharged to an environment througha cooling tower becomes a direct heat source output by the waste heat energy allocating center to surrounding heat consumers, so that a lot of energy sources used for heating are saved, and meanwhile,the resource consumption for treating the circulating cooling water is reduced greatly.

The invention discloses a method for reducing transmission and distribution energy consumption of a regional central heat supply network. The method comprises the steps of establishing a building heating entry jet flow mixing device of a building according to all of heat supply building heating entry within a heat supply range of a heat supply system, adjusting the opening degree of an electric valve of the building heating entry jet flow mixing device and the jet mixing ratio of the water jet flow mixing device, adjusting a transmission and distribution water pump configured for the heat supply network according to building heating mass requirement so as to adjust transmission and distribution flow of the heat supply network and achieve adjustment of all building heating entry positions. Under the situation that the flow of the heat supply system in the building is constant, the flows of the building heating entries connected with the heat supply network is reduced to reduce the transmission and distribution energy consumption of the heat supply network, electricity consumption of the transmission and distribution water pump, improve the temperature difference of supply water and return water and the ratio of the transmission and distribution flows of the building heating entries connected with the heat supply network to the flow of the building heat supply system, improve the adjustability and stability of hydraulic power and heating power of the building heat supply system, save device and maintain cost.

The invention discloses a heat pump type large temperature difference heat exchange system and method. A generator, an absorber, a condenser and evaporators are arranged in a heat pump/refrigerator. The heat pump/refrigerator, water-water heat exchangers, a first-network-water water way and a second-network-water water way are combined and connected through valves and pipelines. The multiple evaporators are arranged. One or more water-water heat exchangers are arranged. When the multiple water-water heat exchangers are arranged, the water-water heat exchangers are connected in series, and the multiple evaporators are connected in series or independently and externally connected. When the multiple evaporators are connected in series, the multiple evaporators, primary parts of the water-water heat exchangers and the generator in the heat pump/refrigerator are connected in the first-network-water water way in series together. When the multiple evaporators are independently and externally connected, the multiple evaporators are connected in the first-network-water water way and the second-network-water water way in series correspondingly. The water supply and return temperature difference of first-network water is enlarged, the heating network conveying capability is improved, due to the low water return temperature of the first-network water, the problems about heat insulation, heat compensation and the like of a water return pipe network can be solved, and the pipe network investment cost and the transmission and distribution energy consumption of the first-network water can be greatly reduced.

The invention relates to a secondary parallel heat pump unit. The heat pump unit comprises the first heat pump unit and the second heat pump unit are arranged in parallel, and a heat exchange unit isarranged between the first heat pump unit and the second heat pump unit. A lower hot water step can be heated to a higher temperature in a gradient manner, the cold water is cooled in a gradient manner according to the direction opposite to the heating temperature of the hot water, the temperature difference between hot water and cold water at the inlet and outlet of the heat pump is increased, and the comprehensive energy utilization efficiency of the system is improved.

The invention relates to a refrigeration and dehumidifying type air-conditioning device provided with all cold and heat sources and capable of preparing cold and hot water. The refrigeration and dehumidifying type air-conditioning device comprises a compressor, a first refrigeration or heating device, a second refrigeration or heating device, a first cold exchange or heat exchange device, a second cold exchange or heat exchange device, a humidifying module, a reheating module, a throttling valve and a rotary wheel heat recycling module, wherein new air passes through a rotary wheel in the rotary wheel heat recycling module to be cooled, dehumidified or heated, then passes through the first refrigeration or heating device, the humidifying module and the reheating module, is mixed with mixed air and enters the second refrigeration or heating device to be cooled and dehumidified. Most of the new air is fed into a room, and the left is returned to the rotary wheel in the rotary wheel heat recycling module, so that energy conversion is realized. The first cold exchange or heat exchange device outputs cold or hot water. The refrigeration and dehumidifying type air-conditioning device resolves the problems that a common full-air air-conditioning system is high in energy consumption, large in building occupied space, long in construction cycle, complex in process and the like.

The invention provides a classified water mixing pump user unit which comprises a water mixing pipe arranged between a water supply pipe and a water return pipe, a water mixing pump arranged on the water supply pipe in the rear of the water mixing pipe, and a classifying pump arranged on the water return pipe in the rear of the water mixing pipe. The classifying pump provides power for flowing water in a main transmission and distribution water supply pipe network to the water supply pipe; and the water mixing pump is used for mixing water in the water supply pipe and returned water in the water return pipe to obtain the water with the temperature required by a user, and then the water is supplied to the user. According to the classified water mixing pump user unit provided by the invention, the flows of a classifying pump and the water mixing pump can be changed through adjusting the motor speeds of the classifying pump and the water mixing pump, so that the problems of the oversupplyof the flow at the front end of the pipe network and the undersupply of the flow at the tail end of the pipe network are effectively solved.

The invention relates to a combined type air treatment unit with a circular self-cleaning function, and belongs to the technical field of building environment and equipment engineering. The technicalscheme is provided for solving the contradictory problem of intermittent air purifying needs and air transmission and distribution energy dissipation in a full air conditioning system, on the basis ofa traditional combined type air treatment unit structure manner, a circular self-cleaning function segment capable of being started according to needs is added, the function segment pumps air from the combined type air treatment unit through a self-circulation fan and returns the air treated through an air purifying device to the combined type air treatment unit, through adding of the circular self-cleaning function segment, the combined type air treatment unit can obviously reduce the air transmission and distribution energy consumption on the premise of meeting the intermittent purifying needs, and the unit can be widely applied to the full air conditioning system with the intermittent purifying needs.