49results about How to "Freezing will not occur" patented technology

The invention discloses a closed-circuit circulation drying system based on two-stage solution dehumidification, including a drying medium circulation subsystem, a first-stage solution dehumidification-regeneration circulation subsystem, a second-stage solution dehumidification-regeneration circulation subsystem, and a first heat pump cycle subsystem and the second heat pump cycle subsystem. The invention adopts two-stage solution dehumidification technology to dehumidify the drying medium, which solves the problems of easy freezing of the heat exchanger and high energy consumption in the traditional cooling and dehumidification process; the vacuum technology is used to regenerate the hygroscopic solution, which reduces the energy consumption of solution regeneration At the same time, the compression technology is used to recycle the generated secondary steam, which solves the problem that the latent heat of water vapor is not used in the traditional cooling and dehumidification process; the mechanical heat pump technology is used to adjust the temperature of solution dehumidification and regeneration, and the energy utilization rate of the system is improved.

The invention discloses a preparation method of a solvent-based brittle self-peeling radioactive detergent. The preparation method comprises the following steps: adopting methacrylic acid as a soft monomer in a free radical polymerization product, methyl methacrylate as a hard monometer in the free radical polymerization product and acrylamide as a functional monomer in the free radical polymerization product; adding nanosilicon dioxide with different grain sizes and a functional additive in the preparation process of the detergent. The detergent obtained by the preparation method can be used in an environment of below 0 DEG C and cannot generate an icing phenomenon; meanwhile, when the decontamination is performed on the surfaces of a precision instrument and equipment, instrument and equipment short circuit and other faults possibly caused by the aqueous detergent are avoided; as the nanosilicon dioxide with different grain sizes is added in the preparation process of the detergent, a peeling effect between a coating brittle chip and the equipment is improved, so that the coating brittle chip is more easily subjected to brittle rupture and peeling from the surface of the equipment.

The invention discloses a device of cold-storage water defrosting and deforesting water and foresting water reusing, which relates to the technical field of cold-storage defrosting. The supply pipe of tap water and a cut-off valve, the cut-off valve and a water-carrying pipe, the water-carrying pipe and a spray pipe, the spray pipe and a nozzle are all connected through screw threads; the enclosing case of an evaporator is fixedly and respectively connected with an evaporator fan, the spray pipe, an evaporator and a glass observing window through a fastener; the wind-returning passage of the enclosing case of the evaporator and a wind-returning door, the wind-feeding passage of the enclosing case of the evaporator and a wind-feeding door are all connected by a rotating shaft in a movable way; the bottom of the enclosing case of the evaporator is connected with a water-sealing drain pipe in a flange connection way; the periphery of the enclosing case of the evaporator is provided with a circulation water storing pool, and the water discharge end of the water-sealing drain pipe extends to the upper part of the circulation water storing pool. The device of the invention is applied tocold-storage defrosting with good effect, can reuse deforesting water and foresting water and the cold of frost layers, and saves water resource and electric energy.

The invention provides a fuel cell heat recovery system. The self-heating heat management system includes a fuel cell water circuit one, a passenger compartment water circulation circuit one, and a battery pack water cycle circuit one; the battery pack water cycle circuit one includes a battery cooler one and a battery pack water cycle Loop 1 is connected in parallel with water circulation loop 1 of the passenger compartment through battery cooler 1; the water circulation loop of the passenger compartment is connected in series with the fuel cell water loop; the external heating configuration thermal management system includes the second battery pack water circulation loop, the battery pack The water circulation loop 2 includes the battery cooler 2, the battery pack water circulation loop 2 is connected in parallel with the water circulation loop 2 of the passenger compartment through the battery cooler 2, and the water circulation loop 2 of the passenger compartment is connected in parallel with the water loop 2 of the fuel cell through the fuel cell 2. The invention can maximize the heat utilization of the cooling circuit by changing the circulation flow path, thereby reducing energy consumption and improving the overall energy utilization efficiency of the automobile.

The invention discloses a helium microcirculation refrigeration Dewar system for superconducting magnets, which belongs to the technical field of cooling devices for superconducting magnets, and comprises: a Dewar with a concave heat conduction cavity on the outer surface of the Dewar; a coupling head , the coupling head extends into the heat conduction chamber, and one end of the coupling head is connected to the inner bottom wall of the heat conduction chamber; the superconducting coil is arranged in the Dewar; the helium microcirculation circuit is arranged in the Dewar, and the helium microcirculation circuit includes the condensation chamber and A plurality of heat exchange pipes, the condensation chamber is connected with the outer bottom wall of the heat conduction chamber, one end of the heat exchange pipe is connected with the condensation chamber, the other end of the heat exchange pipe is closed and connected with the superconducting coil, the heat exchange pipe and the condensation chamber are filled with Helium: the heat conduction chamber of the present invention is only connected to the atmosphere, not to the interior of the Dewar, so that a helium-enclosed operating volume space can be better constructed, and the helium is no longer subject to the diffusion and thermal shock of the atmosphere, and no freezing will occur phenomenon, ensuring heat transfer efficiency and avoiding failure of superconducting magnets.

The invention discloses a temperature control system for preventing cooling and freezing of a fermenter, comprising: a control panel, which is used for human-computer interaction, controls the control module through the control panel, and then controls other components. The beneficial effects of the present invention are: the control module sends instructions to the refrigeration relay and the compressor to stop running for 90 minutes, and then automatically start for 60 minutes, and then according to this time, "stop-run-stop-run..." is continuously cycled , until the temperature reaches 2 to 3 degrees Celsius. In this process, the temperature of the part of the fermentation liquid near the tank wall will drop after running for 60 minutes. , after 90 minutes of equilibrium, the temperature of the fermented liquid in the center of the tank is basically the same as that of the fermented liquid on the wall of the tank, and then the refrigerator is turned on to pull the temperature, and there will be no local overcooling, so the fermented liquid will not freeze .