56results about How to "Guaranteed superheat" patented technology

The present invention provides a refrigerating apparatus to obtain an adequate medium pressure of the refrigerant circuit of the refrigerating apparatus and precisely obtain the effect of a split cycle, thereby enhancing the performance of the refrigerating apparatus. The refrigerating apparatus (R) in the present invention has a split cycle device, in the refrigerating apparatus (R), an operation amount of the valve open degree of a auxiliary reducing means (83) is determined by calculating and merging from a first control amount to a third control amount, wherein the first control amount is obtained based on a discharged refrigerant temperature (DT) of the compressor (11), the second control amount is obtained based on an over-compression judgment value (MPO) and a high pressure side pressure (HP), wherein the over-compression judgment value (MPO) is obtained based on an adequate medium pressure (MP) and a low pressure side pressure (LP) of the refrigerant circuit, and the third control amount is obtained by a difference between a temperature (GCT) of the refrigerant passed through the gas cooler and a temperature (LT) of the second refrigerant flow passed through the intermediate heat exchanger.

The invention relates to a hot-rolled wire rod for galvanized steel wires of bridge cables above 2000 MPa. The chemical composition of the product is calculated by weight percentage: C: 0.90-1.10%, Si: 0.20-0.60%, Mn: 0.30-0.90% , P≤0.010%, S≤0.005%, Cr: 0.10‑0.40%, Al: 0.010‑0.070%, V: 0.02‑0.15%, Cu: ≤0.05%, Ca: 20‑40ppm, N: 20‑90ppm, Others are Fe and unavoidable residual elements; the sorbite structure content of the wire rod is ≥95%, and the tensile strength of the through circle is poor ≤70MPa (uniformity). After the wire rod is drawn and galvanized, the galvanized steel wire is tensile Strength ≥ 2000MPa, torsion times ≥ 12 times. The process flow of the wire rod, molten iron pretreatment, converter or electric furnace steelmaking, LF refining, RH degassing treatment—390*510 bloom continuous casting—billet reheating—billet rolling—intermediate billet surface finishing—intermediate billet reprocessing Heating—rolling of intermediate slab—on-line EDC water bath toughening treatment of wire rod—collection and packaging of wire rod.

The invention discloses a full-fresh-air air handling unit capable of overcooling and overheating synchronously. The full-fresh-air air handling unit comprises a compressor, a four-way reversing valve, an outdoor handling unit heat exchanger, a bi-directional expansion valve and an indoor air supply unit heat exchanger. An air inlet end and an air outlet end of the compressor are connected with two opposite connectors on the four-way reversing valve respectively, a refrigeration inlet of the outdoor handling unit heat exchanger and a refrigeration outlet of the indoor air supply unit heat exchanger are connected with the other two opposite connectors on the four-way reversing valve respectively, and a refrigeration outlet of the outdoor handling unit heat exchanger is connected with a refrigeration inlet of the indoor air supply unit heat exchanger through the bi-bidirectional expansion valve. The full-fresh-air air handling unit effectively solves the problem of loss of obtained overcooling degree, improves the stability and reliability of working of the expansion valve, avoids wet compression of the compressor, can improve safety and reliability of the unit, and increases working energy efficiency ratio.

The invention relates to a method for preparing fine spherical titanium and titanium alloy powder, belonging to the technical field of metal and alloy powder preparation. The method uses national standard TA1 grade sponge titanium as raw material to make titanium and titanium alloy wire or rod; pre-vacuumize the powder making equipment, and then fill inert protective gas; through continuous feeding mechanism and straightener Feed the raw material wire or bar into the smelting chamber, use the high-frequency induction coil to heat and melt the raw material, so that the alloy raw material is melted to form a stable liquid flow or trickle flow; open the supersonic atomizing nozzle in the atomizer to melt The body fluid flow or drip flow is crushed, dispersed and forced to cool to make powder; the powder is obtained through the powder collector, and the powder is sieved by an ultrasonic vibrating sieve to obtain fine spherical powder of titanium and titanium alloy. The spherical titanium and titanium alloy powder prepared by the method has fine particle size, high sphericity, smooth surface, good fluidity and low impurity content.

A heat utilization balance processor relates to a heat exchanger unit for a heat pump hot water machine or a refrigerating cycle system, and in particular relates to a heat utilization balance processor which is suitable for R407C environment-friendly refrigerant. A heat exchange tube is coiled into a spiral shape and arranged in a main heat exchanging cavity; a vapor separation barrel of a vapor-liquid separator is arranged at the lower half part in a shell; an auxiliary heat exchanging cavity is formed between the lower half part of the shell and the outer periphery of the vapor separation barrel; the upper part of the main heat exchanging cavity is communicated to a working medium inlet outside the shell; the main heat exchanging cavity is communicated with the auxiliary heat exchanging cavity through a working medium passage hole; the bottom of the auxiliary heat exchanging cavity is communicated to a working medium outlet outside the shell; and a heat medium water passage is arranged inside the heat exchanging pipe. Through heat utilization balance exchange on the working medium in the process of condensation and evaporation in the auxiliary heat exchanging cavity, the problem of unbalanced phase change process caused by phase change non-isothermal characteristic of non-azeotropic mixing working medium R407C is solved, and the influence of the temperature slippage of the mixed refrigerant on the operation performance and safety of the equipment is eliminated.

The invention relates to a cascade type steam Rankine combined cycle generating device which is characterized in that a steam condenser in a steam Rankine cycle of a high-pressure end is used as one of heat sources (i.e. a low-pressure evaporator) of the steam Rankine cycle of a low-pressure end, latent heat of vaporization of steam in the steam Rankine cycle of the high-pressure end is efficiently recovered to be used for steam Rankine cycle power generation of the low-pressure end, and the load of the condenser in a traditional steam Rankine cycle system can be effectively reduced by more than 20% of the absolute value. By adopting a system optimization technology, the cycle absolute heat efficiency of the whole system can be increased by more than 5%. The cascade type steam Rankine combined cycle generating device can be used for reforming the existing unit for saving energy, and for designing and constructing a novel unit, and the cascade type steam Rankine combined cycle generating device has obvious economic, social and environmental benefits.

The invention discloses a regenerative and recuperative dehumidifying heat pump system. The regenerative and recuperative dehumidifying heat pump system comprises a primary evaporator, a secondary evaporator, a condenser, a compressor, a throttling valve, a dehumidifying heat exchanger, a surface air cooler, a first water pump and a second water pump, wherein the dehumidifying heat exchanger comprises a dehumidifying cooler and a dehumidifying regenerator. By the dehumidifying property of the dehumidifying heat exchanger, the evaporator and the condenser of the heat pump system are respectively used as a cold source and a heat source in a dehumidifying and regenerating process of the dehumidifying heat exchanger, continuous running of the system is realized, and functions of cooling dehumidifying in summers and heating humidifying in winters can be fulfilled. In addition, the secondary evaporator is added in the heat pump system and is used for recycling heat in regenerated air, possibility of liquid impact of the compressor can be reduced, energy can be recycled, and the regenerative and recuperative dehumidifying heat pump system is energy-saving and environmentally friendly.