36results about How to "Increase net output power" patented technology

Methods, systems and apparatus for a solar cell integrating photovoltaic and thermoelectric cell elements to form a hybrid solar cell having increased efficiency and longevity by combining operation of the photovoltaic and thermoelectric elements in at least three different modes of operation to increase electrical output per unit of panel area and to increase cell life, improve performance, and provide operational benefits under different environmental conditions.

The invention belongs to the technical field of engines, and discloses a main bearing bush and an installation structure. The main bearing bush includes an upper bearing bush and a lower bearing bush. The two ends of the upper bearing bush are respectively abutted against the two ends of the lower bearing bush. For the two supporting parts, the axial width of the first transition part is smaller than the axial width of the supporting part. The upper bearing bush of the main bearing bush adopts a variable cross-section method to reduce part of the cross section of the upper bearing bush, which is used to reduce the contact area between the upper bearing bush and the main journal of the crankshaft, so that the friction between the upper bearing bush and the main journal of the crankshaft is reduced. to reduce friction loss. At the same time, compared with the existing technology, under the premise of ensuring the strength of the upper bearing pad, it is equivalent to reducing the weight of the upper bearing pad, which plays a role in weight reduction, thereby reducing the fuel consumption of the whole vehicle, so as to increase the net output power of the engine and reduce fuel consumption. the goal of.

The invention discloses a method and equipment for generating electricity and preparing fresh water by use of a low-temperature heat source. The equipment consists of a seawater pump, a heater, a flash evaporator, a superheater, a mixing chamber, an ascending pipe, a chimney, an air condenser, a water tank, a vacuum pump, a descending pipe, a water turbine generator set, a fresh water pool, a hydraulic ram and an atomization nozzle. In the invention, the seawater is subjected to the steps of heating, flash evaporation, superheating and the like to form low-pressure superheated steam; the superheated steam contacts in the mixing chamber, carries fogdrop, enters the ascending pipe and flows into the air condenser at the top of the chimney to be cooled into condensed water; the condensed water enters the water tank and flows downward through the descending pipe to flush the water turbine generator set to do work and generate electricity and then is stored in the fresh water pool; part of the fresh water is conveyed to the atomization nozzle by the hydraulic ram to be sprayed into the mixing chamber. The equipment disclosed by the invention can make full use of the low-temperature heat source to generate electricity, has the characteristics of high conversion efficiency, high net output power, low generating cost, abundant production of byproduct freshwater and the like, and can be widely applied to the technical field of low-temperature heat source utilization.

The invention relates to an organic Rankine cycle system, which includes a working medium pump, an evaporator, a condenser and a cooling pump, and also includes a working medium pump speed control loop and a cooling pump speed control loop. The working medium pump speed control loop includes sequentially connected The first deviation calculation block, the cascade adjustment main adjustment PID adjustment block, the second deviation calculation block and the cascade adjustment sub-regulator PID adjustment block, the first deviation calculation block inputs the heat source outlet temperature of the evaporator and the heat source outlet temperature set value , the second deviation calculation block inputs the output of the cascade adjustment main adjustment PID adjustment block and the working medium outlet pressure of the evaporator, the cascade adjustment sub-regulator PID adjustment block is connected with the working medium pump, and the cooling pump speed control loop includes the third deviation The calculation block and the third PID adjustment block, the third deviation calculation block inputs the cooling water flow set value and the inlet cooling water flow of the cooling pump, and the third PID adjustment block is connected with the cooling pump. Compared with the existing technology, the heat recovery and thermal efficiency are improved, and the net output power is increased.

A cryogenic energy storage-based nuclear power peak load regulation system comprises a nuclear electric power generation subsystem (10), an air liquefaction subsystem (20), a liquid air energy release subsystem (30) and a energy storage unit (40); during a first period that the load demand of users is less than the rated load of a nuclear power system, redundant electric energy generated by the nuclear electric power generation subsystem is converted into cryogenic energy by means of an air liquefaction process and the cryogenic energy is then stored in liquid air; during a second period that the load demand of users is more than the rated load of the nuclear power system, the energy of the liquefied air stored in the air liquefaction subsystem is converted into electric power; cold released by re-gasifying the liquid air in the liquid air energy release subsystem is stored in the cold accumulation unit in the form of sensible heat during the second period that the load demand of users is more than the rated load of the nuclear power system, and the stored cold is used for liquefying the air of the air liquefaction subsystem during the first period that the load demand of users is less than the rated load of the nuclear power system. The system can remarkably improve the power generation efficiency and net work yield of nuclear reactor heat of the nuclear power system during a peak demand period, in order to realize the purpose of peak load shifting, and furthermore, the system is high in energy storage efficiency.

The invention relates to a proton exchange membrane fuel cell core module preparation method. The preparation method, its characteristic lies in that it includes the following steps: 1)prepares the proton conduction polymer for decorating an inorganic oxide compound nanometer granule: a) first the weight concentration 1.2% -10% of the proton conductionpolymer solution adjusts with NaOH to the pHvalue 6.5-7.5, then changes over to the anhydrous organic solventin, obtains the solution A, then distills this solution to obtain solution B; b) according to inorganic oxide compound and proton conduction polymerload ratio 0.01: 1-0.1: 1, joins this inorganic oxide compound inorganic oxide compound forerunner body in solution B which prepares in step a) to stir 20-30 minutes, makes the inorganic oxide compound forerunner body solution; c) prepares the proton conduction polymer for decorating an inorganic oxide compound nanometer granule; 2) prepares the fuel cell core module. The guarantee water proton exchange membrane fuel cell core module of the invention preparation has good guarantee water ability.

The invention relates to a distributed energy power generation system and method for multi-level waste heat utilization. A distributed energy system is high in fuel gas price, and a waste heat utilization system is low in efficiency. The distributed energy power generation system comprises a fuel gas internal combustion engine generator set, a waste heat boiler and a steam type lithium bromide unit, and is characterized by further comprising a multi-level organic Rankine cycle system, and the multi-level organic Rankine cycle system comprises a first heat regenerator, a first evaporator, a second heat regenerator, a preheater, a third expansion machine, a third condenser and a steam hot water type heat exchanger; a first working medium pump, the first heat regenerator, the first evaporator and the first expansion machine are sequentially connected, and the first expansion machine and the first heat regenerator are connected; a second working medium pump, the second heat regenerator, the preheater, a second evaporator, a second expansion machine and a second condenser are sequentially connected; and a third heat regenerator, a third evaporator, the third expansion machine and the third condenser are sequentially connected. The distributed energy power generation system is reasonable in structural design and high in heat efficiency.

The invention discloses a screw expansion (compression) machine with variable volume ratio. The screw expansion (compression) machine comprises a box body (300), an upper supporting end cover (400), an air inlet end cover (500) and a valve core cover plate (600). The upper supporting end cover (400) is fixedly connected with the box body (300) to form a closed cavity (408), the air inlet end cover(500) and the valve core cover plate (600) are arranged in the cavity (408), and the valve core cover plate (600) is arranged below the air inlet end cover (500). A screw expansion machine further includes a main drive shaft (401), an adjusting operating rod (402) and a driven shaft (403), wherein the main drive shaft (401), the adjusting operating rod (402) and the driven shaft (403) are arranged in parallel to each another. The screw expansion machine further includes an air inlet adjusting mechanism arranged in the cavity (408), and the air inlet adjusting mechanism comprises a half-gear cam (700), an adjusting gear (800), a valve core pushing rod (900), a radial sliding spool (603) and a circumferential sliding valve core (604). The screw expansion (compression) machine has an adjustable built-in volume ratio, the optimal matching between the built-in volume ratio and the actual operating pressure ratio of a system can be kept to the greatest extent, and the overall operating efficiency of the screw expansion machine under variable operating conditions is improved.