31results about How to "Improve supercooling effect" patented technology

The invention relates to a superlarge thickness hydrogen chromium molybdenum steel plate for hydrogenation equipment and a manufacture method thereof, and belongs to the technical field of ferrous metallurgy. A technical scheme is as below: the steel plate comprises the following components by weight: no more than 0.15% of C, no more than 0.10% of Si, 0.300.60% of Mn, no more than 0.007% of P, no more than 0.005% of S, 2.00-2.50% Cr, 0.90-1.10% of Mo, no more than 0.02% of Nb, no more than 0.20% of Cu, no more than 0.20% of Ni, no more than 0.003% of Sb, no more than 0.005% of Sn, no more than 0.016% of As, no more than 0.003% of O, N no more than 0.008%, no more than 0.0002% of H, no more than 0.03 of Ti and the balance of Fe and unavoidable impurities; a round steel ingot with piece weight of 80 tons is produced by electric arc furnace smelting and casting; and the steel ingot is subjected to forging cogging, rolling and a heat treatment process including normalizing, accelerated cooling and tempering to prepare the superlarge thickness chromium molybdenum steel plate with a maximum thickness of 256mm for hydrogenation equipment. A finished steel plate has maximum single weight reaching 60 tons, good cold bending property, no cracking during material manufacture and good resilience. The method provided by the invention reduces labor intensity, saves time and improves the utilization rate of materials.

The invention provides a corrosion resistant coating for metal magnesium and a preparation method thereof. The coating has favorable corrosion resistance. The preparation method has the advantages of simple process and low production cost and is suitable for industrial production. The corrosion resistant coating used for metal magnesium comprises the following chemical compositions in percentage by weight: 40-45wt% of alloy powder, 3-6wt% of titanium carbonitride powder, 3-6wt% of silicon nitride powder, 7-8wt% of butanol and the balance of epoxy resin liquid. The grain sizes of alloy powder,titanium carbonitride powder and silicon nitride powder are 270-800 meshes. The alloy powder comprises the following components in percentage by weight: 2-4wt% of Cu, 0.01-0.1wt% of Sn, 0.2-0.4wt% ofSb, 3-6wt% of Si, 0.03-0.09wt% of Pr and the balance of Ni.

The invention belongs to the technical field of air conditioners and particularly relates to an air conditioning system. In order to effectively improve cooling/heating effect of an air conditioner and reduce energy consumption, the air conditioning system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, an auxiliary heat exchanger and an ejector; the compressor, the outdoor heat exchanger, the auxiliary heat exchanger, the indoor heat exchanger and the ejector form a coolant cycle main loop; the compressor, the outdoor heat exchanger/indoor heat exchanger, the auxiliary heat exchanger and the ejector form a coolant cycle branch loop; in cooling/heating cycle, part of a coolant from the compressor flows into the ejector along the main loop, the other part of thecoolant flows into the ejector along the branch loop, and the two parts of the coolant are mixed in the ejector before the mixture reflows into the compressor. The auxiliary heat exchanger is used toimprove the supercooling effect of the coolant; the ejector is used to increase the suction pressure of the compressor, arriving at pressure increasing and efficiency improving; the cooling effect ofthe air conditioner in a high temperature environment and the heating effect thereof in a low temperature environment are improved, and energy consumption is reduced.

The invention provides a machine set. An outdoor processing unit heat exchanger consists of two parallel condenser tubes; and a supercooler is positioned between the two parallel condenser tubes of the outdoor processing unit heat exchanger. The refrigeration/heat cycle of the machine set is as follows: in a working condition of refrigeration, a refrigerant is condensed and supercooled, and then sent to an indoor air supply unit heat exchanger for heat exchange, and finally returned to a compressor, and the whole refrigeration cycle process is completed; and in the working condition of heating, the refrigerant is sent to the indoor air supply unit heat exchanger for heat exchange through the compressor, enters the supercooler for supercooling, enters the outdoor processing unit heat exchanger, and finally is returned to the compressor, and the whole heating cycle process is completed. Because the refrigerant is supercooled after a reservoir, the problem of lowering the supercooling degree is solved; because the supercooler is positioned between the two parallel condenser tubes of the outdoor processing unit heat exchanger, a strong airflow field formed on the middle part of a fan can be effectively utilized, and the actual supercooling effect of the system can be improved; and because of big suppercooling degree of the system, the operating stability and reliability of an expanding valve are improved, and the refrigerating capacity and the refrigerating energy efficiency of the system are also improved.

The invention provides refrigerating equipment. The refrigerating equipment comprises a freezing chamber used for containing frozen objects, a freezing circulating system comprising a compressor, a condenser, an expansion mechanism and an evaporator which are connected together, an air supply path used for conveying cool air generated by the evaporator, a pallet used for bearing the frozen objects in the freezing chamber and provided with a plurality of through holes, and a blower used for blowing the cool air conveyed by the air supply path towards the pallet on the lower portion in the freezing chamber, wherein the evaporator is used for generating refrigerating cool air through cooling; and an air supply cavity is formed in the bottom of the pallet and used for receiving the cool air conveyed by the air supply path and discharging the cool air through through holes in the bottom of the pallet upwards. Food is frozen effectively through supercooling so that the supercooling effect can be improved.

The invention provides a lightweight fine grain titanium fiber pumice magnesium alloy composite material and a preparation method thereof. The composite material has high strength and excellent damping performance. The method has simple process and low production cost and is suitable for industrial production. The composite material takes magnesium alloy as a substrate on which fine grain titanium fibers and pumice particles are distributed, the size of grains of the fine grain titanium fibers is 1-10 mu m, the fine grain titanium fibers and the pumice particles account for 45-55% of the composite material by volume, and the weight ratio of the fine grain titanium fibers to the pumice particles is 1:1. The magnesium alloy substrate comprises the following chemical components in percentage by weight: 4%-8% of Al, 0.01%-0.05% of Gd, 0.01%-0.05% of Gr, 0.001%-0.005% of Mo, 0.03%-0.09% of Si, 0.003%-0.009% of V, 0.003%-0.09% of Sn and the balance Mg.

The invention discloses a high-precision constant-temperature and constant-humidity air conditioner system and a control method thereof. The high-precision constant-temperature and constant-humidity air conditioner system comprises an indoor unit and an outdoor air conditioner system module, wherein the indoor unit comprises a case, a mixing chamber formed in the case, a filtering chamber, a humidifying chamber, a temperature adjusting heating chamber and an air outlet section; the humidifying chamber is located between the filtering chamber and the temperature adjusting heating chamber; the outdoor air conditioner system module comprises an outdoor unit, a defrosting unit matched with the outdoor unit and a constant temperature water humidifying unit for humidifying the humidifying chamber. According to the high-precision constant-temperature and constant-humidity air conditioner system and the control method of the invention, indoor air is humidity adjusted by the constant temperature water supplied by the outdoor unit, and the heat-humidity exchange is performed in the humidifying section to control the absolute humidity of the air conditioner system; the air conditioner systemensures the humidity accuracy of the air conditioner system by controlling the absolute moisture content of the air outlet of the air conditioner system; and secondly, the air outlet temperature of the indoor unit is controlled by the temperature adjusting heating chamber separately, thereby achieving independent control of the air outlet temperature and humidity, and the control of the air outlettemperature and humidity is more accurate.

The invention provides a refrigeration device which comprises a freezing chamber, a freezing circulation system, a supply air path, a tray, a temperature sensor and an air blower. The freezing chamber is used for storing frozen food. The freezing circulation system comprises a compressor, a condenser, an expansion mechanism and an evaporator which are connected together, and refrigeration cold air is produced through cooling of the evaporator. The supply air path is used for conveying cold air produced by the evaporator. The tray is used for being detachably arranged inside the freezing chamber and bearing the frozen food. The tray is provided with multiple through holes. The temperature sensor is used for being arranged inside the freezing chamber and detecting the bottom temperature of the frozen food on the tray. The air blower is used for blowing cold air conveyed by the supply air path towards the tray at the lower portion inside the freezing chamber. Food is efficiently frozen through supercooling, and therefore the supercooling effect is improved.

The invention provides a finely crystalline iron-stibium fiber and pumice magnesium alloy composite material and a preparation method thereof. The composite material has high strength, and excellent damping performance. The method has the advantages of simple process, low production cost and suitability for industrial production. The composite material has the magnesium alloy serving as a matrix,finely crystalline iron-stibium fibers and pumice microparticles are distributed on the matrix, the crystalline grains of the iron-stibium fibers are 1 to 10 mu m, and the fibers and the pumice account for 45 to 55 volume percent of the composite material, wherein the weight ratio of the fibers to the pumice is 1:1.

The invention discloses a constant-temperature and constant-humidity air conditioner system with ultrahigh precision and a control method. The constant-temperature and constant-humidity air conditioner system comprises an indoor unit and an outdoor unit module, wherein the indoor unit comprises a case as well as a mixing chamber, a filtering chamber, a humidifying chamber, a temperature-adjustingheating chamber and an air outlet section which are formed in the case; the humidifying chamber is located between the filtering chamber and the temperature-adjusting heating chamber; the outdoor unitmodule comprises an outdoor unit, a defrosting unit matched with the outdoor unit and a constant-temperature water humidification unit for executing humidification operation on the humidifying chamber. Indoor air is subjected to humidity adjustment by means of constant-temperature water provided by the outdoor unit, heat-humidity exchange is performed in the humidifying section to control absolute humidity of air output by the unit, and humidity precision of the air conditioner unit is guaranteed by controlling the absolute moisture content of the air output by the unit; temperature of outletair of the indoor unit is controlled separately by the temperature-adjusting heating chamber, so that independent control over temperature and humidity of the outlet air is realized, and control overthe temperature and the humidity of the outlet air is more accurate.

The invention provides a heat exchanger with a good supercooling effect and an air conditioning unit. The heat exchanger comprises a shell, a partition plate, a plurality of baffle plates and a plurality of heat exchange pipes, wherein the baffle plates are arranged in a supercooling area at intervals to form a baffle flow channel, the baffle plates are in a curved surface shape, and an included angle is formed between the protruding direction of the curved surface shape and the flow direction of a refrigerant in the supercooling area; and the heat exchange pipes are arranged in the supercooling area in parallel, and each heat exchange pipe penetrates through all the baffle plates. According to the heat exchanger with the good supercooling effect and the air conditioning unit, the baffle plates in the curved surface shape are arranged, so that the problem of a flowing dead zone caused by a flat plate type baffle plate in the prior art is effectively solved, the turbulent flow effect onthe liquid refrigerant is increased, the supercooling effect is improved, the utilization degree of the supercooling area is improved, and therefore the purpose of improving the supercooling effect of the heat exchanger is achieved.