CN112834254A - Heat regenerator performance testing device and testing method - Google Patents
Heat regenerator performance testing device and testing method Download PDFInfo
- Publication number
- CN112834254A CN112834254A CN202110002335.7A CN202110002335A CN112834254A CN 112834254 A CN112834254 A CN 112834254A CN 202110002335 A CN202110002335 A CN 202110002335A CN 112834254 A CN112834254 A CN 112834254A
- Authority
- CN
- China
- Prior art keywords
- heat regenerator
- regenerator
- piston
- heat
- packaging shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a performance testing device and a testing method of a heat regenerator, which are used for testing the performance of the heat regenerator. The device comprises an oscillating flow generating device, a piston phase angle adjusting device, a heat regenerator testing section and a cold-hot end heat exchanger; the oscillating flow generating device consists of a variable frequency motor, a piston cylinder and a belt pulley, and oscillating flow conditions with different frequencies can be obtained by adjusting the rotating speed of the motor through a frequency converter; the piston phase angle adjusting device consists of a transmission shaft and an indexing flange plate. The heat regenerator testing section can be used for packaging heat regenerator fillers made of different materials, and real-time data including temperature and pressure data can be obtained through a data acquisition instrument after the heat regenerator testing section is installed and fixed; the cold-hot end heat exchanger adopts a shell-and-tube heat exchanger and is respectively arranged at two ends of a heat regenerator matrix to generate required high-temperature and low-temperature heat sources so as to meet the requirements of heat regenerator performance tests under different working conditions.
Description
Technical Field
The invention relates to a testing device and a testing method, in particular to a regenerator performance testing device and a testing method which are suitable for testing the performance of a regenerator.
Background
The heat regenerator is used as a device for improving the system cycle efficiency and is widely applied to regenerative cryocoolers, thermoacoustic engines and Stirling heat engines. In the Stirling cycle, a working medium completes two important processes of constant-volume heat absorption and constant-volume heat release in a heat regenerator. The level of the regenerative efficiency of the regenerator directly affects the overall system cycle efficiency.
The filler material of the inner matrix of the regenerator generally requires a small flow volume and a low flow resistance of the working medium. The change in temperature of the regenerator substrate is small and therefore the ratio of the thermal capacities of the substrate and the working medium should be as large as possible, which requires a low porosity of the regenerator substrate, but a high porosity substrate should be used in order to reduce the flow resistance of the working medium in the regenerator. In addition, the heat transfer performance of the base body and the working medium is good, the heat transfer performance of the base body material is required to be good, and the heat loss caused by axial heat conduction of the base body is increased.
Obviously, the above requirements for regenerator design are contradictory, and it is impossible to satisfy all the above design requirements at the same time, so it is necessary to design a regenerator with the best performance by performing relevant experimental matching work in consideration of the relative importance of each requirement. For different application occasions, the operating frequencies of working media in the heat regenerator are greatly different, so that an experimental device for testing the performance of the heat regenerator needs to create oscillating flow conditions with different frequencies. In addition, the stirling heat engines under different working conditions need to adjust corresponding optimal piston phase differences to achieve optimal output efficiency, so that the testing device also needs to ensure the flexibility and adjustability of the piston phase differences.
However, the existing method for testing the performance of the heat regenerator through experiments mainly comprises the steps of directly placing the manufactured heat regenerator in a complete machine, obtaining relevant parameters of the heat regenerator after operation, and further evaluating the performance of the heat regenerator. The method needs a complete machine, and the regenerator to be tested needs to be made into an actual size, so the experiment cost is very high. In addition, such a test method has limitations and cannot meet experimental conditions of different types of regenerators.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects of the technology, the heat regenerator performance testing device and the testing method are provided, wherein the heat regenerator performance testing device is simple in structure, convenient to use and good in simulation effect, and can simulate the oscillating flow of the operation condition of the heat regenerator.
The technical scheme is as follows: in order to achieve the purpose, the heat regenerator performance testing device comprises a power source, a piston phase angle adjusting device, a heat regenerator packaging shell, a heater and a cooler; the heater and the cooler are shell-and-tube heat exchangers, connecting flanges are arranged on two sides of the shell-and-tube heat exchangers, two heat exchanger inlet and outlet joints are respectively arranged on the outer sides of two ends of the side walls of the heater and the cooler, a heat regenerator packaging shell is arranged between the heater and the cooler and is respectively connected with the heater and the cooler through the flanges arranged at two ends, a tested heat regenerator matrix is arranged in the heat regenerator packaging shell, two pressure measuring point joints are respectively arranged on the side wall of the heat regenerator packaging shell, which is close to the flanges at two ends, and a temperature measuring point joint is arranged on the middle section of the side wall of the;
the heater, the heat regenerator packaging shell and the cooler are transversely arranged, two sides of an aggregate formed by the heater, the heat regenerator packaging shell and the cooler are respectively connected with two vertically arranged piston cylinders through 90-degree bent pipes, pistons are arranged in the piston cylinders, and bases are arranged at the bottoms of the piston cylinders; the bottom of the piston is connected with a piston phase angle adjusting device through a crankshaft, and the piston phase angle adjusting device is connected with a power source;
the piston phase angle adjusting device is arranged between the two bases and comprises a transmission shaft, wherein the left side of the transmission shaft is connected with a crank at the bottom of one piston through a coupler, the right side of the transmission shaft is connected with a crank at the bottom of the other piston through a pulley of a piston cylinder, the transmission shaft is connected with the pulley of the piston cylinder through an indexing flange, and the angle between the indexing flange and the pulley of the piston cylinder is adjusted according to needs so as to adjust the phase between the two pistons.
The power source is a variable frequency motor, the transmission device comprises a piston cylinder belt pulley and a motor belt pulley, the motor belt pulley is connected with an output shaft of the variable frequency motor, and a belt is arranged between the piston cylinder belt pulley and the motor belt pulley for transmission.
And the two pistons in the two piston cylinders have a thirty-degree multiple phase difference, and reciprocate up and down according to the thirty-degree multiple phase difference to generate working medium oscillation flow, and the working medium reciprocates and oscillates in a closed space between the two pistons, so that the working medium oscillation flow is generated in a heat regenerator matrix in a heat regenerator packaging shell.
The heat regenerator packaging shell is a section of stainless steel pipe, and a temperature measuring point joint and a pressure measuring point joint are arranged on the stainless steel pipe and are internally provided with a temperature sensor and a pressure sensor respectively; after the measured heat regenerator substrate is arranged in a heat regenerator packaging shell, a thermocouple wire is led out from a temperature measuring point joint and is connected with a data acquisition instrument for real-time monitoring; the pressure sensors can be respectively connected to two ends of the heat regenerator test section from the pressure test point joints for monitoring the overall pressure drop characteristic of the tested heat regenerator matrix
And the hole sites are fixed on the indexing flange plate through fastening bolts with the same indexing.
A test method of a heat regenerator performance test device comprises the following steps:
placing the measured heat regenerator substrate into a heat regenerator packaging shell and fixing, leading out a thermocouple from a temperature measuring point joint and connecting the thermocouple with a data acquisition instrument, and installing pressure sensors on pressure measuring point joints at two ends of the heat regenerator packaging shell and connecting the pressure sensors with the data acquisition instrument;
respectively connecting a heater and a cooler with two ends of a heat regenerator packaging shell through flanges;
connecting an inlet and outlet joint of a heat exchanger of the heater with a heat source medium pipeline at a required temperature according to requirements, and connecting an inlet and outlet joint of a heat exchanger on the cooler with a cold source medium pipeline at the required temperature;
adjusting the phase difference between the pistons in the two piston cylinders by adjusting the hole positions on the indexing flange plate so as to obtain a thirty-degree multiple phase difference;
after the temperatures of two ends of the heat regenerator matrix are constant, the variable frequency motor is started, a motor shaft of the variable frequency motor drives pistons in the two piston cylinders to do periodic reciprocating motion through a belt, and oscillating flows with different frequencies are generated to the heat regenerator matrix by adjusting the rotating speed of the variable frequency motor, so that different Stirling cycle test working conditions are simulated.
Has the advantages that: the invention simulates a proper test working condition according to the application occasions of different heat regenerators; the motor of the oscillating flow generating device can be subjected to variable-frequency speed regulation so as to obtain different experimental oscillation frequencies. The device can adjust the phase of the piston through the indexing flange plate, and meets the experimental requirements of flexibly adjusting the phase angle of the piston and the temperature of a cold and heat source; the heat regenerator packaging shell can be provided with a small-size tested heat regenerator manufactured in proportion according to the similarity principle, so that the cost can be saved; compared with the existing heat regenerator, the device has the advantages of simple structure and low cost, the working medium used for the test of the whole machine can be replaced according to the requirement, and the size of the test section of the heat regenerator is flexible and adjustable, so that the heat regenerator is high in universality.
Drawings
FIG. 1 is a schematic diagram of the experimental apparatus for testing the performance of a regenerator in accordance with the present invention;
FIG. 2 is a half-sectional view of the oscillatory flow generating apparatus of the present invention;
FIG. 3 is a schematic view of the phase angle adjustment apparatus of the present invention;
FIG. 4 is a schematic view of a regenerator package housing of the present invention;
fig. 5 is a schematic view of a heater or cooler of the present invention.
In the figure: 1-a heater; 2-a regenerator package housing; 3-a cooler; 4, a piston cylinder; 5-a coupler; 6-a transmission shaft; 7-piston cylinder belt pulley; 8-a belt; 9-motor pulley; 10-a variable frequency motor; 11-a piston; 12-a fastening bolt; 13-indexing flange plate; 14-heat exchanger in-out connection; 15-pressure measuring point joint; 16-temperature measuring point joint; 17-regenerator base body.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments and the accompanying drawings.
As shown in fig. 1, the heat regenerator performance testing device of the present invention includes a power source, a piston phase angle adjusting device, a heat regenerator packaging casing 2, a heater 1 and a cooler 3; the heater 1 and the cooler 3 are shell-and-tube heat exchangers, connecting flanges are arranged on two sides of the shell-and-tube heat exchangers, as shown in fig. 4, two heat exchanger inlet and outlet connectors 14 are respectively arranged on the outer sides of two ends of the side walls of the heater 1 and the cooler 3, the regenerator packaging shell 2 is arranged between the heater 1 and the cooler 3 and is respectively connected with the heater 1 and the cooler 3 through the flanges arranged at two ends, as shown in fig. 5, a measured regenerator substrate 17 is arranged in the regenerator packaging shell 2, two pressure measuring point connectors 15 are respectively arranged on the side wall of the regenerator packaging shell 2 near the flanges at two ends, and a temperature measuring point connector 16 is arranged on the middle section of the side wall of the regenerator packaging shell 2; the heat regenerator packaging shell 2 is a section of stainless steel pipe, and a temperature measuring point joint 16 and a pressure measuring point joint 15 which are arranged on the stainless steel pipe are internally provided with a temperature sensor and a pressure sensor respectively; after the measured heat regenerator substrate 17 is arranged in the heat regenerator packaging shell 2, a thermocouple wire is led out from the temperature measuring point joint 16 and is connected with a data acquisition instrument for real-time monitoring; the pressure sensors can be respectively connected to two ends of the heat regenerator test section from the pressure test point joints 15 to monitor the overall pressure drop characteristic of the measured heat regenerator matrix
As shown in fig. 2, the heater 1, the heat regenerator packaging shell 2 and the cooler 3 are transversely arranged, two sides of an aggregate formed by the heater 1, the heat regenerator packaging shell 2 and the cooler 3 are respectively connected with two vertically arranged piston cylinders 4 through 90-degree bent pipes, pistons 11 are arranged in the piston cylinders 4, and bases are arranged at the bottoms of the piston cylinders 4; the bottom of the piston 11 is connected with a piston phase angle adjusting device through a crankshaft, and the piston phase angle adjusting device is connected with a power source; the power source is a variable frequency motor 10, the transmission device comprises a piston cylinder belt pulley 7 and a motor belt pulley 9, the motor belt pulley 9 is connected with an output shaft of the variable frequency motor 10, and a belt 8 is arranged between the piston cylinder belt pulley 7 and the motor belt pulley 9 for transmission.
As shown in fig. 3, a piston phase angle adjusting device is arranged between the two bases, and the piston phase angle adjusting device comprises a transmission shaft 6, an indexing flange 13 and a piston cylinder belt pulley 7; the left side of the transmission shaft 6 is connected with a crankshaft at the bottom of one piston 11 through the coupler 5, the right side of the transmission shaft 6 is connected with a crankshaft at the bottom of the other piston 11 through the piston cylinder belt pulley 7, the transmission shaft 6 is connected with the piston cylinder belt pulley 7 through the indexing flange 13, and the angle between the indexing flange 13 and the piston cylinder belt pulley 7 is adjusted according to needs so as to adjust the phase position between the two pistons 11.
The indexing flange 13 is fixed on the hole site through the fastening bolts 12 with the same quantity, and the indexing flange 13 and the transmission shaft can be welded and fixed; setting that two pistons 11 are both at the top dead center initially, the phase difference of the pistons at the moment is 0 degree, when adjusting the phase, taking down the fastening bolt 12, ensuring that the indexing flange 13 is still, namely the transmission shaft 6 is fixed, namely the phase of the left piston is kept unchanged, rotating the belt pulley of the right piston cylinder, noting that the rotating angle needs to be the multiple of the minimum indexing on the indexing flange in the figure, 12 hole sites are arranged on the indexing flange 13, so that the minimum adjusting angle of the phase difference is 30 degrees, ensuring that the bolt hole sites are in one-to-one correspondence with the hole sites on the indexing flange 13, and finally, screwing up the fastening bolt 12 to finish the phase angle adjustment of the two pistons; according to actual working requirements, the number of hole sites of the indexing flange plate can be changed, or a plurality of long holes are arranged, so that the phase difference adjustment requirements of different pistons 11 can be met.
Two pistons 11 in two piston cylinders 4 have a thirty-degree multiple phase difference, and reciprocate up and down according to the thirty-degree multiple phase difference to generate working medium oscillation flow, and the working medium reciprocates back and forth in a closed space between the two pistons 11 to generate working medium oscillation flow in a regenerator matrix 17 in a regenerator packaging shell 2, wherein the working medium is gas and comprises air, helium or hydrogen.
A test method of a heat regenerator performance test device comprises the following steps:
placing a measured heat regenerator base body 17 into a heat regenerator packaging shell 2 and fixing, leading out a thermocouple from a temperature measuring point joint 16 to be connected with a data acquisition instrument, and connecting a pressure sensor from pressure measuring point joints 15 at two ends of the heat regenerator packaging shell 2 to be connected with the data acquisition instrument;
the heater 1 and the cooler 3 are respectively connected with two ends of a heat regenerator packaging shell 2 through flanges;
connecting a heat exchanger inlet and outlet joint 14 of the heater 1 with a heat source medium pipeline at a required temperature according to requirements, and connecting the heat exchanger inlet and outlet joint 14 on the cooler 3 with a cold source medium pipeline at the required temperature;
the phase difference between the pistons 11 in the two piston cylinders 4 is adjusted by adjusting the hole positions on the indexing flange 13 so as to obtain a phase difference of thirty degrees;
after the temperatures of the two ends of the heat regenerator matrix 17 are constant, the variable frequency motor 10 is started, a motor shaft of the variable frequency motor 10 drives the pistons 11 in the two piston cylinders 4 to do periodic reciprocating motion through the belt 8, and oscillating flows with different frequencies are generated to the heat regenerator matrix 17 by adjusting the rotating speed of the variable frequency motor 10, so that different Stirling cycle test working conditions are simulated.
In order to test the performance of the regenerator substrate 17 at different ambient temperatures, many sets of different high and low temperatures are set in experiments. The experimental temperature range is different according to different application occasions of the heat regenerator, generally, the temperature range of cold and heat sources at two ends of the heat regenerator does not exceed 100 ℃, and the temperature of a heat source of the kilowatt-level Stirling engine is about 500 ℃.
Claims (6)
1. A regenerator capability test device which characterized in that: the device comprises a power source, a piston phase angle adjusting device, a heat regenerator packaging shell (2), a heater (1) and a cooler (3); the heater (1) and the cooler (3) are shell-and-tube heat exchangers, connecting flanges are arranged on two sides of each shell-and-tube heat exchanger, two heat exchanger inlet and outlet connectors (14) are respectively arranged on the outer sides of two ends of the side walls of the heater (1) and the cooler (3), a heat regenerator packaging shell (2) is arranged between the heater (1) and the cooler (3) and is respectively connected with the heater (1) and the cooler (3) through the flanges arranged at two ends, a measured heat regenerator base body (17) is arranged in the heat regenerator packaging shell (2), two pressure measuring point connectors (15) are respectively arranged on the side wall of the heat regenerator packaging shell (2) close to the flanges at two ends, and a temperature measuring point connector (16) is arranged on the middle section of the side wall of the heat regenerator;
the heater (1), the heat regenerator packaging shell (2) and the cooler (3) are transversely arranged, two sides of an aggregate formed by the heater (1), the heat regenerator packaging shell and the cooler (3) are respectively connected with two vertically arranged piston cylinders (4) through 90-degree bent pipes, a piston (11) is arranged in each piston cylinder (4), and a base is arranged at the bottom of each piston cylinder (4); the bottom of the piston (11) is connected with a piston phase angle adjusting device through a crankshaft, and the piston phase angle adjusting device is connected with a power source;
the piston phase angle adjusting device is arranged between the two bases, the piston phase angle adjusting device comprises a transmission shaft (6), the left side of the transmission shaft (6) is connected with a crankshaft at the bottom of one piston (11) through a coupler (5), the right side of the transmission shaft (6) is connected with a crankshaft at the bottom of the other piston (11) through a piston cylinder belt pulley (7), the transmission shaft (6) and the piston cylinder belt pulley (7) are connected through an indexing flange plate (13), and the angle between the indexing flange plate (13) and the piston cylinder belt pulley (7) is adjusted according to needs so as to adjust the phase between the two pistons (11).
2. The regenerator performance testing apparatus of claim 1, wherein: the power supply is inverter motor (10), transmission includes piston cylinder belt pulley (7) and motor pulley (9), and motor pulley (9) and inverter motor's (10) output shaft connection are equipped with belt (8) transmission between piston cylinder belt pulley (7) and motor pulley (9).
3. The regenerator performance testing apparatus of claim 1, wherein: two pistons (11) in the two piston cylinders (4) have thirty-degree multiple phase difference, and reciprocate up and down according to the thirty-degree multiple phase difference to generate working medium oscillation flow, and the working medium shuttles back and forth in a closed space between the two pistons (11) to generate working medium oscillation flow in a regenerator matrix (17) in the regenerator packaging shell (2).
4. The regenerator performance testing apparatus of claim 1, wherein: the heat regenerator packaging shell (2) is a section of stainless steel pipe, and a temperature measuring point joint (16) and a pressure measuring point joint (15) which are arranged on the stainless steel pipe are internally provided with a temperature sensor and a pressure sensor respectively; after a measured heat regenerator substrate (17) is arranged in a heat regenerator packaging shell (2), a thermocouple wire is led out from a temperature measuring point joint (16) and is connected with a data acquisition instrument for real-time monitoring; the pressure sensors can be respectively connected to two ends of the heat regenerator test section from the pressure test point joints (15) to monitor the overall pressure drop characteristic of the tested heat regenerator matrix
5. The regenerator performance testing apparatus of claim 1, wherein: the indexing flange plate (13) fixes hole positions through fastening bolts (12) with the same number.
6. A method for testing the performance testing device of the heat regenerator, which is characterized by comprising the following steps:
a measured heat regenerator base body (17) is placed in a heat regenerator packaging shell (2) and fixed, a thermocouple is led out from a temperature measuring point joint (16) and is connected with a data acquisition instrument, and a pressure sensor is arranged on pressure measuring point joints (15) at two ends of the heat regenerator packaging shell (2) and is connected with the data acquisition instrument;
the heater (1) and the cooler (3) are respectively connected with two ends of a heat regenerator packaging shell (2) through flanges;
connecting a heat exchanger inlet and outlet joint (14) of the heater (1) with a heat source medium pipeline at a required temperature according to requirements, and connecting a heat exchanger inlet and outlet joint (14) on the cooler (3) with a cold source medium pipeline at the required temperature;
the phase difference between the pistons (11) in the two piston cylinders (4) is adjusted by adjusting the hole positions on the indexing flange (13) so as to obtain the thirty-degree multiple phase difference;
after the temperatures of two ends of the heat regenerator matrix (17) are constant, the variable frequency motor (10) is started, a motor shaft of the variable frequency motor (10) drives the pistons (11) in the two piston cylinders (4) to do periodic reciprocating motion through the belt (8), and oscillating flows with different frequencies are generated to the heat regenerator matrix (17) by adjusting the rotating speed of the variable frequency motor (10), so that different Stirling cycle test working conditions are simulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002335.7A CN112834254A (en) | 2021-01-04 | 2021-01-04 | Heat regenerator performance testing device and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002335.7A CN112834254A (en) | 2021-01-04 | 2021-01-04 | Heat regenerator performance testing device and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112834254A true CN112834254A (en) | 2021-05-25 |
Family
ID=75927326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110002335.7A Withdrawn CN112834254A (en) | 2021-01-04 | 2021-01-04 | Heat regenerator performance testing device and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112834254A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5146750A (en) * | 1989-10-19 | 1992-09-15 | Gordon W. Wilkins | Magnetoelectric resonance engine |
| JPH06213074A (en) * | 1993-01-20 | 1994-08-02 | Tohoku Electric Power Co Inc | Scavenging stirling engine and driving method thereof |
| CN202939048U (en) * | 2012-11-08 | 2013-05-15 | 安徽万瑞冷电科技有限公司 | G-M refrigerator regenerator performance tester |
| CN103837356A (en) * | 2012-11-23 | 2014-06-04 | 中国科学院理化技术研究所 | Device for testing performance of heat regenerator |
| CN109490359A (en) * | 2018-12-26 | 2019-03-19 | 浙江大学 | Profound hypothermia Oscillating flow heat transfer property test platform and method |
-
2021
- 2021-01-04 CN CN202110002335.7A patent/CN112834254A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5146750A (en) * | 1989-10-19 | 1992-09-15 | Gordon W. Wilkins | Magnetoelectric resonance engine |
| JPH06213074A (en) * | 1993-01-20 | 1994-08-02 | Tohoku Electric Power Co Inc | Scavenging stirling engine and driving method thereof |
| CN202939048U (en) * | 2012-11-08 | 2013-05-15 | 安徽万瑞冷电科技有限公司 | G-M refrigerator regenerator performance tester |
| CN103837356A (en) * | 2012-11-23 | 2014-06-04 | 中国科学院理化技术研究所 | Device for testing performance of heat regenerator |
| CN109490359A (en) * | 2018-12-26 | 2019-03-19 | 浙江大学 | Profound hypothermia Oscillating flow heat transfer property test platform and method |
Non-Patent Citations (2)
| Title |
|---|
| JACEK KROPIWNICKI等: "A Theoretical and Experimental Study of Moderate Temperature Alfa Type Stirling Engines", 《ENGINES》 * |
| 潘奇: "斯特林回热器交变流压差实验研究", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅱ辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2486081A (en) | Multicylinder refrigerating machine | |
| Gheith et al. | Experimental investigations of a gamma Stirling engine | |
| CN107478403A (en) | Pipeline RTA reliability test assembly | |
| CN116907887A (en) | System and method for testing performance of Stirling engine heat regenerator and layered heat regenerator thereof | |
| Snyman et al. | Design analysis methods for Stirling engines | |
| CN106840728B (en) | Device and method for independently evaluating vascular cold finger performance | |
| CN112834254A (en) | Heat regenerator performance testing device and testing method | |
| Langdon-Arms et al. | Development of a solar-powered liquid piston Stirling refrigerator | |
| Erol et al. | The investigation of an energetic and exergetic performance characteristics of a beta-type Stirling engine with a rhombic drive mechanism | |
| Thombare et al. | Theoretical and experimental investigation of Alfa type bio mass Stirling engine with effect of regenerator effectiveness, heat transfer, and properties of working fluid | |
| Otaka et al. | Study of performance characteristics of a small Stirling refrigerator | |
| Kang et al. | Fabrication and test of gamma-type Stirling engine | |
| CN110715812A (en) | Device and method for evaluating optimal phase matching of pneumatic Stirling refrigerator | |
| Tew Jr | Overview of heat transfer and fluid flow problem areas encountered in Stirling engine modeling | |
| Winkelmann et al. | Design, modeling, and experimental validation of a stirling pressurizer with a controlled displacer piston | |
| Tijani et al. | Development of a thermoacoustic heat pump for distillation column | |
| Carlsen | Results from 20 kW Vuilleumier heat pump test program | |
| Daneshgar et al. | Experimental investigation of gamma stirling engine coupling to convert thermal to cooling energy in different laboratory conditions | |
| BOTEAN | Influence of the temperature gradient on the speed of a Stirling gamma engine | |
| Yanaga et al. | Experimental study of Stirling engine regenerator efficiency and pressure loss | |
| Gao et al. | Experimental demonstration of a novel heat exchange loop used for oscillating flow systems | |
| Suranjan et al. | Determination of coefficient of performance of stirling refrigeration sm | |
| Hirata et al. | Test results of applicative 100 W Stirling engine | |
| Getie et al. | Investigation of thermal and fluidic losses and their effect on the performances of a Stirling refrigerator-Influence des pertes thermiques et fluidiques sur les performances d’un réfrigérateur Stirling Résumé | |
| CN210863175U (en) | Device for evaluating optimal phase matching of pneumatic Stirling refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210525 |