Showing papers on "Surface condenser published in 2018"

Combined heat and power generation full-condensation afterheat recovery technology

Abstract: The invention provides a method for directly feeding primary network returned water in the steam condenser as condensed water and a method for reducing the water outlet temperature of the condensed water of a steam condenser step by step, increasing the water supply temperature of a primary network step by step and improving the power generation efficiency and the heat supply effect. The method comprises a thermal power plant steam extraction heat supply system, a returned water temperature adjusting system, a thermal power plant steam condenser cooling water system and a high-temperature-difference heat supply primary pipe network.

Analysis of helium purification system capability during water ingress accident in RDE

Abstract: The water ingress accident caused by steam generator tube rupture (SGTR) in RDE (Experimental Power Reactor) must be anticipated. During the accident, steam from secondary system diffused and mixed with helium gas in the primary coolant. To avoid graphite corrosion in the core, steam will be removed by Helium purification system (HPS). There are two trains in HPS, first train for normal operation and the second for the regeneration and accident. The second train is responsible to clean the coolant during accident condition. The second train is equipped with additional component, i.e. water cooler, post accident blower, and water separator to remove this mixture gas. During water ingress, the water release from rupture tube is mixed with helium gas. The water cooler acts as a steam condenser, where the steam will be separated by water separator from the helium gas. This paper analyses capability of HPS during water ingress accident. The goal of the research is to determine the time consumed by HPS to remove the total amount of water ingress. The method used is modelling and simulation of the HPS by using ChemCAD software. The BDBA and DBA scenarios will be simulated. In BDBA scenario, up to 110 kg of water is assumed to infiltrate to primary coolant while DBA is up to 35 kg. By using ChemCAD simulation, the second train will purify steam ingress maximum in 0.5 hours. The HPS of RDE has a capability to anticipate the water ingress accident.

The antifouling effects of copper-oxide filler incorporated into paint-based protective films applied to steam surface condenser tubes

Abstract: Paint-based protective films (PPFs) are used to protect condenser tubes from corrosion and erosion but have been shown to be susceptible to biofouling. Here the biocidal properties of copper-oxide fillers incorporated into PPFs are explored in this paper. Specifically two PPFs filled with 20% and 50% filler (by weight) are tested in parallel with a non-biocidal ordinary epoxy PPF, and bare stainless steel tube. Using double-pipe co-current flow heat exchangers installed at a thermal power plant, actual cooling water exiting the condenser is evenly distributed between the test tubes. Heat transfer in the condenser is simulated by heated water flowing through each annulus of the double-pipe heat exchangers, thereby maintaining repeatable outer convection conditions. An exposure test of 125 days shows that the 50% biocide filled PPF has the lowest fouling factor of all the tubes. The non-biocidal epoxy has the highest fouling factor and the 20% filled PPF behaves similarly. Both of these are greater than the bare stainless steel control tube. The 50 % filled PPF is compared to the fouling of an existing admiralty brass tube and the shape of the fouling curves are similar. This evidence suggests that provided the filler concentration is sufficiently high, there is the potential for the copper-oxide filler to reduce the asymptotic composite fouling factor by virtue of its antibacterial properties.

Online indirect air cooling high-back-pressure heat supply machine unit back pressure control system and method

Abstract: The invention relates to an indirect air cooling high-back-pressure heat supply machine unit back pressure control system and method. The system comprises a steam turbine low-pressure cylinder, a double-temperature-region steam condenser, an indirect cooling tower and a DCS control system, wherein a variable-frequency circulation water pump and a thermal resistor are arranged on a circulation water pipe entering the side B of the double-temperature-region steam condenser from the indirect cooling tower; the variable-frequency water pump is connected with a frequency converter; a pressure transducer is arranged at the side B of the double-temperature-region steam condenser; the frequency converter, the thermal resistor and the pressure transducer are connected with the DCS system through cables; a PID controller is used in the DCS control system for controlling the frequency converter; the back pressure practical value PV is measured through the pressure transducer; the PID controller outputs signals to the frequency converter used as an executing unit so as to regulate the frequency of the frequency converter; the power of the variable-frequency circulation water pump is further regulated; the flow rate of the circulation water is regulated; the goal of regulating the pressure of the double-temperature-region steam condenser is finally achieved. The system and the method provided by the invention have the advantages that the back pressure set value is optimized; the fuzzy self adaptation PID control is used for improving the dynamic regulating process; the ordinary PID control overshoot is reduced.

Heat exchanger performance and efficiency test platform

Abstract: The utility model relates to a heat exchanger performance and efficiency test platform, including heat source part, vapour source part, first mixer, second mixer, air source part, cold source part, shell and tube type heat exchanger, first separator, shell -and -tube double -pipe heat exchanger testing component, condensation heat transfer ware, boiling heat transfer ware, first water cooler, second separator, steam condenser and the 2nd water chiller, the utility model discloses a heat exchanger performance and efficiency test platform, it can be tested the heat transfer performance and the flowing resistance of fluid performance of shell -and -tube double -pipe heat exchanger, double -pipe heat exchanger, condensation heat transfer ware and boiling heat transfer ware respectively, can not take very big space, has reduced manufacturing cost, and test data is reliable and stable, has satisfied actual measurement demand, has better application and development prospect.

Solar energy seawater desalination system based on MOF material

Abstract: The invention provides a solar energy seawater desalination system based on a MOF material, solar energy is used as only driving energy, high-quality energy is not consumed, and high-efficiency seawater desalination can be achieved. The solar energy seawater desalination system is characterized by comprising a capillary-driven evaporation device, at least two MOF devices and a fresh water discharge pipe. The capillary-driven evaporation device comprises a shell, a capillary evaporation core and a steam condenser which are located in the shell, the shell is divided into upper and lower two chambers by the capillary evaporation core, the lower chamber is used as a seawater compensation chamber, the upper chamber is used a steam chamber; each MOF device includes a transparent evaporation chamber, a MOF material layer disposed in the transparent evaporation chamber, and a light-absorbing coating disposed on the surface of the MOF material layer, and the transparent evaporation chamber is communicated with the steam chamber through the gas-feeding end of a steam transportation pipeline, and is communicated with the intake end of the steam condenser by the exhaust end of the steam transportation pipeline. The fresh water discharge pipe is connected with the water discharge port of the steam condenser, and condensed fresh water is discharged by the fresh water discharge pipe.

Blast furnace slag flushing steam white elimination system

Abstract: The invention relates to the field of steel plant smoke plume white elimination, in particular to blast furnace slag flushing steam white elimination system which comprises a slag flushing steam collection pipe section, a slag flushing steam condenser and a slag flushing steam discharge chimney; the slag flushing steam collection pipe section is used for collecting slag flushing steam; the slag flushing steam condenser is connected with the slag flushing steam collection pipe section and introducing a cold medium to condense the slag flushing steam introduced by the slag flushing steam collection pipe section; and the slag flushing steam discharge chimney is connected with a slag flushing steam outlet of the slag flushing steam condenser and is used for introducing a mixed hot gas to be mixed with the slag flushing steam and discharging the mixed gas. For the blast furnace slag flushing steam white elimination system, by utilizing blast furnace wall cooling water to cool the slag flushing steam and utilizing a hot air furnace smoke to be mixed with the slag flushing steam which is not cooled to form unsaturated smoke, the technical problem that white smoke plume is eliminated in the water slag flushing treatment technology by adopting a water quenching method is solved, and the environmental protection problem is solved.

Improvement of Efficiency of Coal-Fired Steam Power Plant by Reducing Heat Rejection Temperature at Condenser Using Kalina Cycle

Abstract: This paper proposes an approach for improving the plant efficiency by reducing the heat rejection temperature of power cycle using Kalina Cycle System 11 (KCS11) which is integrated at the steam condenser of a 500 MWe SubC (subcritical) coal-fired power plant. It is modelled by using power plant simulation software ‘Cycle Tempo’ at different plant operating conditions. Results show that the additional net electric power of 5.14 MWe from KCS11 improves the net energy and exergy efficiencies of the power plant by about 0.302 % point and 0.27 % point, respectively at full load over the stand-alone coal-fired steam power plant. Thereby, the carbon dioxide (CO2) emission is reduced by about 2.02 t/h at full load. Combined plant efficiencies decrease with decrease in evaporator outlet temperature due to decrease in vapour quality of binary mixture at turbine inlet and higher steam turbine back pressure. Levelized Cost of Electricity (LCoE) generation and payback period of the combined cycle power plant are about Rs 1.734 and 4.237 years, respectively and the cost of fuel saving is about Rs 0.685 per kg of coal which is lower than the fuel cost.

Modelling of a delugeable flat bare tube bundle for an air-cooled steam condenser

Abstract: In this paper, a one dimensional model was developed for the analytical evaluation of the thermal performance of a delugeable flat tube bundle to be incorporated in the second stage of an induced draft hybrid (dry/wet) dephlegmator (HDWD) of a direct air-cooled steam condenser (ACSC). A one-dimensional model is analysed by using three methods of analysis which are: Poppe, Merkel, and heat and mass transfer analogy. The model’s accuracy was validated through a comparison of solutions obtained from the above-mentioned methods of analysis. Satisfactory correlations between the results were reached. However, heat transfer rate attained by Poppe method is higher by 2.89% and 9.87% than that obtained by Merkel, and heat and mass analogy methods, respectively. The difference in air-side pressure drop obtained by all the methods found to be insignificant. Furthermore, the best configuration of the flat tube bundle for the second stage of induced draft HDWD was identified through the comparison of its performance to the round tube bundle. The performance of the round tube bundle is found to be around 2 and 1.5 times of that of flat tube bundle, when both bundles operate in wet and dry operating modes respectively.

Sea water desalination system for recycling steam condensation latent heat

Abstract: The invention provides a sea water desalination system for recycling steam condensation latent heat. The energy utilization rate and sea water desalination efficiency can be improved effectively. Thesea water desalination system is characterized by comprising a capillary driving evaporator, two secondary steam generators and a fresh water discharge pipe, wherein the capillary driving evaporator comprises a shell and a capillary evaporation core and a steam condenser which are positioned inside the shell, the capillary evaporation core is arranged at the middle part of the shell, the steam condenser is buried in the surface layer of the capillary evaporation core, the shell is divided into an upper cavity and a lower cavity through the capillary evaporation core, the cavity positioned at the lower part serves as a sea water compensation chamber, and the cavity positioned at the upper part serves as a steam chamber; each secondary team generator comprises a secondary steam storage cavity, a cold energy conveying pipeline and a waste heat conveying pipeline; the fresh water discharge pipe is connected with a drain port of the steam condenser, wherein each secondary steam generator has two modes, during working, the two secondary steam generators are in different working modes; and when saturation is reached, the working mode is switched.

Fuel gas-steam-thermoelectricity cooperative system and method based on heat storage steam adjustment

Abstract: The invention discloses a fuel gas-steam-thermoelectricity cooperative system and method based on heat storage steam adjustment. The system comprises an air compressor, a gas turbine, an electric generator, a heat accumulator, a boiler, a chimney, a low-pressure steam pocket, a high-pressure steam pocket, a main steam pipe, a steam condenser, a make-up pump, a connection pipeline and an auxiliaryvalve. Thermoelectricity system supply of an original gas turbine in a low-load or even halt state is improved by arranging the heat accumulator and utilizing high-temperature flue gas of the gas turbine for heat accumulation, the requirements of the user side for hot steam are met, the gas turbine set thermoelectricity coordination ratio is improved, meanwhile, the system economy is improved, andthe application prospect is quite good.

Thermoelectric decoupling system and operating method thereof

Abstract: The invention discloses a thermoelectric decoupling system and an operating method thereof. The system comprises a boiler, a steam turbine high-pressure cylinder, a steam turbine middle-low-pressure cylinder, a steam condenser, a condensate pump and a heat regenerative system which communicate with one another in sequence, and further comprises a generator, a condenser, an evaporator and an absorber which communicate with one another in sequence to form a circulating loop to form an absorption type heat pump. Flow of main stream which enters the generator is regulated by a main steam ejector high-pressure steam regulating valve which is connected with a main steam ejector inlet, and a main steam ejector by-pass regulating valve; flow of reheated steam which enters the generator is regulated by a reheated steam ejector high-pressure steam regulating valve which is connected with a reheated steam ejector inlet, and a reheated steam ejector by-pass regulating valve; and the regulating target is that a proportion of main steam flow to reheated steam flow, which enters the generator, is equal to a proportion of main stream flow, which enters the steam turbine high-pressure cylinder fromthe boiler, to reheated steam flow which enters the steam turbine middle-low-pressure cylinder. The thermoelectric decoupling system is small in system investment and is high in energy utilization efficiency.

Technology for wastewater zero discharge treatment of thermal power plant by utilizing waste heat of dead steam of air cooling island

Abstract: The invention relates to a technology for wastewater zero discharge treatment of a thermal power plant by utilizing waste heat of dead steam of an air cooling island. The technology comprises the following steps: distributing one part of the dead steam entering the air cooling island, introducing into a shell side of a dead steam condenser, condensing, then recycling dead steam condensed water, heating circulating cooling water by virtue of the dead steam condenser, enabling the heated circulating cooling water to enter a shell side of a water-water heat exchanger as a heating heat source, after heat exchange and cooling, feeding into a pipe side of the dead steam condenser by virtue of a fresh water circulating pump to absorb heat energy, enabling waste water with suspended solids removedto firstly enter a wastewater pool and then enter the water-water heat exchanger by virtue of a wastewater circulating pump, after heat absorption, dividing into two ways by virtue of a ball recoverynet, pumping one way into a rubber ball adding device by virtue of rubber balls and then enabling the way to enter the pipe side of the water-water heat exchanger, enabling the other way to enter a wastewater cooling tower distribution system and carrying out spraying evaporation, enabling evaporated concentrated wastewater to fall into a wastewater tank, then feeding into a flue section in frontof an electrostatic dust collector by virtue of an atomizing pump, and enabling dry particles to enter the electrostatic dust collector with smoke together and be trapped with dust together. The technology provided by the invention is applicable to wastewater treatment of the thermal power plant.

Boiler flue gas heat recovery system

Abstract: The utility model relates to a boiler flue gas heat recovery system, including the boiler, economizer, air preheater, phase -change heat exchanger, steam turbine, steam condenser, the pump that condenses, oxygen -eliminating device, working shaft, water storage bucket and flue, flue and boiler connected, boiler include gas vent and water inlet, economizer, air preheater and phase -change heat exchanger set up in the flue, and the air preheater setting is in the economizer low reaches, and phase -change heat exchanger sets up in the air preheater low reaches, phase -change heat exchanger and water storage bucket intercommunication, steam turbine and gas vent intercommunication, steam condenser and steam turbine intercommunication, condense pump and steam condenser intercommunication, the oxygen -eliminating device and the pump intercommunication that condenses, working shaft and oxygen -eliminating device intercommunication, phase -change heat exchanger include the feed water inlet, andthe working shaft includes first working shaft and second working shaft, first working shaft and water inlet intercommunication, second working shaft and feed water inlet intercommunication. The utility model discloses recycling water to the heat exchanger that is used for boiler steam the production of electricity generation back to the make full use of water resource reduces the moisturizing volume.

Selective Design of an Experiment for Evaluating Air–Water Hybrid Steam Condenser for Concentrated Solar Power

Abstract: In thermal power plants water-cooled steam condenser is used to reject heat from steam at the turbine outlet. In this system, makeup water of about 1500–3000 L per MWh of electricity generation is required. Therefore, in the arid places, air-cooled condensers are recommended, especially, for concentrated solar thermal power (CSP) plants. It is reported that 10 °C rise in air temperature reduces electricity output by about 4.2% Bustamante et al. (Appl Therm Eng xxx:1–10, 2015) [1]. For steam condensation with air at a temperature of 37 °C, an exergetic efficiency of the condenser is 26% in comparison to 63% for water-cooled steam condenser Blanco-Marigorta et al. (Energy, 36:1966–1972, 2011) [2], Bustamante et al. (Appl Therm Eng xxx:1–10, 2015) [1]. Therefore, air-cooled condenser needs higher initial temperature difference (ITD) between condensing steam and air to achieve a high power output. In dry and hot places, like Rajasthan in India, during summer, air temperature reaches up to 45–50 °C. Whereas, condensing steam at the exit of turbine is available at a pressure of ~0.1 atm and at a temperature of ~45 °C. In view of this, the paper presents design of an experiment for evaluation of an air–water hybrid steam condenser. The proposed concept is based on: (a) the temperature difference between air and condensing steam in dry and arid regions and (b) achieving a high value of Nusselt/Colburn-factor to friction-factor ratio. A plate fin-and-circular tube with staggered arrangement air-cooled condenser designs is selected, as the starting point. Two possible modifications are suggested: (a) Earth (underground) for pre-cooling of ambient air or water and (b) use of water spray for additional cooling of the pre-cooled air. The obtained cold air is employed for heat transfer in condenser. In this paper, the selection and evaluation of characteristic design parameters are presented. Finally, the designed experimental setup using all these aspects is described.

Increase condenser pipe device of steam condensate volume

Abstract: The utility model discloses an increase condenser pipe device of steam condensate volume, including steam condenser pipe and cold condenser pipe, steam condenser pipe one end is opened has steam inlet, and the other end seals, and steam condenser pipe's sealing end lower part is equipped with the distilled water export, is provided with the silk screen demister in the steam condenser pipe, and cold condenser pipe seal cover is located steam condenser pipe and outer and be located between steam inlet and the distilled water export, and cold condenser pipe lower part is equipped with the comdenstion water entry, and cold condenser pipe upper portion is equipped with condenser pipe 1, and comdenstion water entry and condenser pipe 1 set up respectively in cooling the condenser pipe both ends.The utility model discloses have the steam condensate of increasing volume, improve the technological effect of the preparation efficiency of distilled water.

Heat dissipation and refrigeration type double-face firewall

Abstract: The invention relates to a heat dissipation and refrigeration type double-face firewall and belongs to the technical field of buildings. The heat dissipation and refrigeration type double-face firewall comprises aerated concrete brick walls at the two sides and a refrigeration device, wherein the refrigeration device is located between the aerated concrete brick walls. A thermally-insulating fireprotection layer is arranged between each aerated concrete brick wall and the refrigeration device. Each vertical metal heated pipe is externally provided with fireproof silicone rubber. A space between the aerated concrete brick walls at the two sides is filled with cast-in-place reinforced concrete, so that the heat dissipation and refrigeration type double-face firewall is formed by the refrigeration device and the aerated concrete brick walls at the two sides. Each vertical metal heated pipe is internally provided with an R134a refrigerant. The R134a refrigerant is heated to be in the steam state in fire; and steam is gathered to an upper collected steam condenser pipe, part of heat is taken away, and the heat dissipation and refrigeration type double-face firewall is used for refrigeration and cooling. By means of the heat dissipation and refrigeration type double-face firewall, the heat dissipation capacity of the firewall is better enhanced; it is guaranteed that double faces ofthe firewall are resistant to fire; the fire resistant duration of the firewall is prolonged, and the stress performance of a wall body is improved; the property loss circumstances are reduced; and precious time is won for people to escape from the fire.

Steam turbine shaft sealing system

Abstract: The invention discloses a steam turbine shaft sealing system, which comprises a high-pressure cylinder, wherein the two ends of the high-pressure cylinder are connected with high-medium-pressure shaftsealing steam return mother pipes; positions, near the outer side of the high-pressure cylinder, of the top ends of the high-medium-pressure shaft sealing steam return mother pipes are connected witha high-pressure shaft sealing steam return pipe; in addition, positions, near the outer side of the medium-pressure cylinder, of the top ends of the high-medium-pressure shaft sealing steam return mother pipes are connected with a medium-pressure shaft sealing steam return pipe; a shaft sealing heater is connected with one end of the high-pressure shaft sealing steam return pipe; a steam condenser is arranged in a position, near a water injection pipe, of one side of the top end of the shaft sealing heater; the bottom end of the shaft sealing heater is provided with a shaft sealing fan; an oxygen removal device is arranged in positions, near a steam pump steam return pipe, of the bottom end of the medium-pressure shaft sealing steam return pipe and the high-pressure shaft sealing steam return pipe; the upper side of one end of a steam inlet pipe is connected with a shaft sealing overflow pipe. The structure is reasonable; the use is safe; the problem of lubricating oil quality reduction due to steam overflowing of a high-pressure shaft seal and a medium-pressure shaft seal can be thoroughly solved; the operation reliability of a machine unit is ensured.

Dead steam recovery heating system of thermal power plant

Abstract: The utility model provides a dead steam recovery heating system of thermal power plant, includes two steam turbines and corresponds two condensers that exhaust steam extraction system, dead steam recovery utilize system, joint water conservancy project system, utilize the exhaust steam extraction system, the trompil draws forth the exhaust steam come on two condensers respectively, through pipe -line transportation to exhaust steam header, joint water conservancy project system includes first exhaust steam condenser, second exhaust steam condenser, increases the steam turbine condenser, the exhaust steam header divides the first exhaust steam condenser of two way tube couplings, second exhaust steam condenser, the exhaust steam header utilizes system's tube coupling to increase the steam turbine condenser through dead steam recovery, joint water conservancy project system access heat supply pipe network realizes that the steam turbine exhaust steam is by high -efficient recycle, energy-conserving maximizing the benefits for whole thermodynamic system parameter matching is the most reasonable, and the method of operation is best.

Combined heat and power generation afterheat recovery technology

Abstract: The invention provides a combined heat and power generation afterheat recovery technology. Aiming at incapability of using waste heat of a steam condenser of a thermal power plant due to low grade inwinter and huge energy waste caused by condensation of dead steam after work of a steam turbine through energy consumption in the thermal power plant, the invention provides a method for directly feeding primary network returned water in the steam condenser as condensed water, so that the power generation efficiency and the heat supply effect are improved, and the dead steam afterheat emission isreduced. The combined heat and power generation afterheat recovery technology comprises a thermal power plant steam extraction heat supply system, a returned water temperature adjusting system, a thermal power plant steam condenser cooling water system, a high-temperature-difference heat supply primary pipe network and a cooling tower heat dissipating system.

Central authorities' hot -water heating heat recovery system for on euphausia superba ship

Abstract: The utility model discloses a central authorities' hot -water heating heat recovery system for on euphausia superba ship, heat recovery system include exhaust steam heat recovery heat exchanger, a diesel engine high temperature water heat exchanger and a vapor heat exchanger who is used for carrying on the cubic heating to diesel engine high temperature water heat exchanger exhaust return water who is used for carrying on secondary heating to exhaust steam heat recovery heat exchanger exhaust return water who is used for carrying on the single heat to exterior user end exhaust return water, exhaust steam heat recovery heat exchanger goes out water end (W E ), outside shrimp med production line and useless steam condenser with exterior user respectively and is connected, the import of diesel engine high -temperature water is connected with outside diesel engine cooling system, exhaust steam heat recovery heat exchanger and vapor heat exchanger respectively, and vapor heat exchanger isintake to hold with outside steam system and exterior user respectively and is connected The utility model discloses simple structure, through the heat source to most equipment carry on the heat recovery, can effectual reduction euphausia superba ship the oil consumption the during operation under the low temperature environment

Double-stage flash evaporation and Rankine cycle linked geothermal power generation device and method

Abstract: The invention provides a double-stage flash evaporation and Rankine cycle linked geothermal power generation device and a double-stage flash evaporation and Rankine cycle linked geothermal power generation method. The device comprises a geothermal well and a first-stage flash evaporator, wherein the first-stage flash evaporator is connected with a geothermal water outlet of the geothermal well; astream outlet of the first-stage flash evaporator is connected with the inlet of a steam turbine; the outlet of the steam turbine is connected with the inlet of a condenser; the outlet of the condenser is connected with the inlet of a backfilling well; a water outlet of the first-stage flash evaporator is connected with the inlet of a second-stage flash evaporator; a steam outlet of the second-stage flash evaporator is connected with a steam replenishing opening of the steam turbine; the water outlet of the second-stage flash evaporator is connected with the inlet of an evaporator; the water outlet of the evaporator is connected with the inlet of the backfilling well; an organic working medium outlet of the evaporator is connected with the inlet of an expander; the outlet of the expander is connected with the inlet of a steam condenser; the outlet of the steam condenser is connected with the inlet of a storage tank; the outlet of the storage tank is connected with the inlet of a working medium pump; and the outlet of the working medium pump is connected with the organic working medium inlet of the evaporator. The invention also discloses a power generation method of the device. Thedevice and the method provided by the invention can be used for generating electricity by recycling the waste heat in medium-and-low-temperature geothermal tail water, so the generated output of a geothermal power station is increased.

Heat exchanger condensation heat transfer experimental test platform and test method

Abstract: The invention discloses a heat exchanger condensation heat transfer experimental test platform. The heat exchanger condensation heat transfer experimental test platform comprises a boiler and a cooling tower, wherein the boiler is respectively connected with a compressed air heater and a steam separator, the compressed air heater and the steam separator are respectively connected with a mixer, themixer is connected with a condensation experiment component, the condensation experiment component is connected with a separator, the separator is respectively connected with a steam condenser and awater cooler, and the steam condenser and the water cooler are respectively connected with a water outlet. When the heat exchanger condensation heat transfer experimental test platform carries out a condensation heat transfer experiment, water vapor flow is kept constant, relation between reynolds number and friction coefficient and the relation between pressure drop as well as mass gas content rate and heat flux density are obtained by changing flow of non-condensable gas and the air; content of the non-condensable gas is kept constant, and relation between change of the flow of the water vapor and heat transfer coefficient of a heat exchanger is found out by changing flow of water vapor; the measured values are kept constant, and influence of structures on a condensation heat transfer coefficient is compared by changing surface geometric characteristics of the heat exchanger.

Cold energy power generation system for liquefied natural gas floating storage regasification device

Abstract: The invention discloses a cold energy power generation system for a liquefied natural gas floating storage regasification device. The cold energy power generation system comprises a medium container,a booster pump, engine coolers, a steam condenser, a turboexpander, an alternating current generator and a natural gas heater which are sequentially connected through pipelines. According to the coldenergy power generation system, the waste heat of an engine on a ship and the surplus steam exhausted by the ship are recycled, a gasification intermediate medium is heated, and the turboexpander is driven by the gasification medium to enable the alternating current generator to generate electricity, so that the energy utilization rate of the whole ship is effectively increased; and meanwhile, thehigh-temperature and low-pressure gaseous medium output by the turboexpander can also heat liquefied natural gas or low-temperature natural gas, the seawater consumption during LNG gasification and heating on the ship is reduced, the influence of LNG-FSRU on the surrounding environment is reduced, and the environmental friendliness is improved.

Garbage incineration power generation system

Abstract: The invention relates to a garbage incineration power generation system which comprises a garbage incinerator, a waste heat boiler and a steam turbine. An exhaust outlet of the steam turbine communicates with a water inlet of the waste heat boiler through a steam-water circulation pipeline; the steam-water circulation pipeline is sequentially provided with a main steam condenser, a condensate pump, a condensate heating mechanism, a deaerator and a water supply pump; the garbage incineration power generation system further comprises a bypass condensation pipeline, one end of the bypass condensation pipeline is in bypass connection to a communicating pipeline between the waste heat boiler and the steam turbine, and the other end of the bypass condensation pipeline is connected to the deaerator; and a temperature-decreased pressure reducer and a bypass steam condenser are sequentially arranged on the bypass condensation pipeline in the flowing direction of condensate. According to the garbage incineration power generation system, supercooled water produced by the bypass condensation pipeline can directly enter the deaerator without rising pressure through the condensate pump and heating treatment of the condensate heating mechanism and cannot be gasified in the deaerator, and the circulating water volume of condensing steam, power consumption of the condensate pump and energy consumption of the condensate heating mechanism can be significantly reduced.