cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18462/iir.compr.2017.0232
title: Application of eco-friendly and low-GWP working fluid, HCFO-1224yd(Z) to heat-pumps.

description: New refrigerants with low global warming potential (GWP) are currently being developed to replace conventional higher GWP refrigerants. HCFO-1224yd(Z) is the next-generation refrigerant, with the goal of "Dramatically Reducing GWP with Superior Performance". HCFO-1224yd(Z) is a non-flammable and low toxicity refrigerant, designed for use in centrifugal chillers, organic rankin cycle power systems, and waste heat recovery pumps. HCFO-1224yd(Z) is designed to replace the conventional refrigerants HCFC-123 and HFC-245fa, with superior performance.
DOI: 10.18462/iir.compr.2017.0249
title: Thermodynamic analysis of performance of liquid injector for ejection refrigeration system.

description: Paper deals with thermodynamic analysis of operation of the system with two-phase vapour-liquid injector as a liquid pump in ejection refrigeration systems. The analysis cover the following fluids: isobutane R600a, butane R600, propane R290, R245fa, R134a, R1234yf, and R1234ze(E). The simple balance model of the injector as well as obtained results were presented and discussed in the paper.
DOI: 10.14457/cu.the.2005.1262
title: ฤทธิ์ของกรดซินนามิกและอนุพันธ์ ในการลดระดับกูลโคส การกระตุ้นการหลั่งอินซูลิน และการยับยั้งเอนไซม์แอลฟ่า-กลูโคซิเดส /
DOI: 10.14457/cu.the.2005.1269
title: ผลกระทบของการประกาศข่าวทางเศรษฐกิจ ต่ออัตราแลกเปลี่ยน (บาทต่อดอลล่าร์สหรัฐ) /
DOI: 10.14457/cu.the.2005.1272
title: ระบบทดสอบเครือข่ายแอดฮอกไร้สายสำหรับประเมินการควบคุมแบบเวลาจริงในการส่งข้อมูลสื่อผสม /
DOI: 10.14457/cu.the.2005.1273
title: การออกแบบและพัฒนาระบบสนับสนุนการศึกษาทางไกลแบบอะซิงโครนัส /
DOI: 10.18462/iir.compr.2017.0206
title: Experimental study of self-acting reed valves.

description: In principle, a reciprocating compressor stage consists of a working volume which varies periodically due to a piston moving inside a liner. Latter is sealed by two sets of valves. The typical type of valves used within compressors for refrigeration plants are reed valves. The measurements of the reed valve dynamics as well as their movement in compressors can be performed with commercial proximity sensors, strain gauges or in house developed sensors. Although timing and lift information is available through these methods, other types of deflection such as torsional movement are more difficult to observe. This work tries to address these aspects by providing real operation data obtained in a test rig. An in-depth comparative analysis of two measurement methodologies, represented by an optical and a state-of-the-art resistive sensor system will be carried out.
DOI: 10.18462/iir.compr.2017.0237
title: A simple theoretical study of a new multi-chamber rotary compressor with different refrigerants.

description: A new multi-chamber rotary compressor (MCRC) is introduced in this paper. This new compressor is designed to achieve better compactness and energy efficiency. The design and working principle of the new compressor will be presented in this paper. A mathematical model is developed and the theoretical performances of R-134a, R32 and R1234yf are investigated and presented in this paper. Various key parameters including the Coefficient of Performance (COP) of each refrigerant is calculated and analyzed.
DOI: 10.5281/zenodo.1043780
title: Localizing On-Scalp Meg Sensors Using An Array Of Magnetic Dipole Coils

description: Matlab scripts and data used to generate the results described in the paper of the same name submitted to PLOS one.
DOI: 10.17632/vwhn3my64t.2
title: Formaldehyde and methanol aqueous solutions - Raman spectra

description: This dataset contains formaldehyde-water and formeladehyde-methanol solutions' Raman spectra. Several concentrations expressed by volumetric ratios. Raman: 731nm, exposure 5 s.
DOI: 10.17632/x6fx4zssft.1
title: CCOMP: An efficient algorithm for complex roots computation of determinantal equations

description: In this paper a free Python algorithm, entitled CCOMP (Complex roots COMPutation), is developed for the efficient computation of complex roots of determinantal equations inside a prescribed complex domain. The key to the method presented is the efficient determination of the candidate points inside the domain which, in their close neighborhood, a complex root may lie. Once these points are detected, the algorithm proceeds to a two-dimensional minimization problem with respect to the minimum modulus eigenvalue of the system matrix. In the core of CCOMP exist three sub-algorithms whose tasks are the efficient estimation of the minimum modulus eigenvalues of the system matrix inside the prescribed domain, the efficient computation of candidate points which guarantee the existence of minima, and finally, the computation of minima via bound constrained minimization algorithms. Theoretical results and heuristics support the development and the performance of the algorithm, which is discussed in detail. CCOMP supports general complex matrices, and its efficiency, applicability and validity is demonstrated to a variety of microwave applications.
DOI: 10.18462/iir.compr.2017.0215
title: New trends in the natural and mixed refrigerants used in air conditioning and refrigeration systems - a review.

description: This study presents a new trend of natural and mixed refrigerants as the ideal refrigerants, environmentally friendly and an ideal solution to the problems of ozone-depleting substances and the surrounding environment. HFC refrigerants are presently the main swap for CFC and HCFC refrigerants in air-conditioning systems. During this period of time much consideration has been paid to the conceivable utilize of fluorinated propene isomers for the substitution of HFC liquids, being much of the time high-GWP refrigerants. However, the available hydrofluoroolefins (HFOs) can't cover all the refrigeration and air-conditioning systems when utilized as pure fluids this because the properties are not reasonable for all working conditions. In this paper analyses the behavior of different new trends in the natural and mixed refrigerants. In chillers, R1234ze(E) can considerably reduce CO2 final emissions, as well as, R1234ze(E) is a good option in air conditioning and refrigeration systems.
DOI: 10.18462/iir.compr.2017.0216
title: Heat pumps for decarbonising heating and cooling.

description: The building sector is responsible for about 40% of the total energy demand and 33% of the CO2 emissions. Until 2050 the building sector should become CO2 free. Measures are biomass, geothermal sources, solar thermal and solar PV, and heat pumps. Biomass can be used directly for heating, however, cooling is only possible with thermally driven heat or compression systems driven by electricity from biomass power plants. The majority of geothermal systems are shallow systems, they require heat pumps to rise the temperature to a level required for heating. In the case of solar heating and cooling, heating is possible with solar thermal energy alone, cooling can only be realized using heat pumps, either thermally driven sorption systems compression systems driven by electricity from PV. 
Heat pumps are the main devices to achieve the goal to decarbonise heating and cooling. Other advantages are: they can use electricity from fluctuating sources like wind and PV, in combination with stores they can enable the operation electric and thermal smart grids; they will act as the main heat generation system for DHC systems, using renewable sources as well as heat recovered from industry, and they will be the key technology for efficient and CO2 free heating and cooling.
DOI: 10.18462/iir.compr.2017.0222
title: Modeling and analysis of ground-source heat pump system on low GWP refrigerants for domestic applications.

description: The global interest to heat pumps technology is increasing in recent years because of its potential to reduce primary energy consumption and thus reduce emissions of the greenhouse gases. In this paper an efficiency analysis of a solar assisted ground source heat pump system with different working fluids is presented. Although, for specifying the possibilities for thermodynamic improvement, in many cases energy analysis is not enough and exergy analysis is more appropriate. In this study an exergy assessment of a solar assisted geothermal heat pump system is provided. The exergy losses in each of the components of the overall system are determined. Exergy efficiencies of the solar collector and the whole system is determined to assess their performances and to demonstrate the potential energy saving for further improvement.
DOI: 10.14457/cu.the.2005.1229
title: โพลีมอร์ฟิสมของยีนซีโรโทนินทรานสปอร์ต ในเด็กท้องผูกที่ไม่มีโรคทางกาย /
DOI: 10.14457/cu.the.2005.1230
title: การเตรียมตัวเร่งปฏิกิริยาเคมีไฟฟ้าฐานทอง สำหรับออกซิเจนรีดักชัน ในเซลล์เชื้อเพลิงพีอีเอ็ม /
DOI: 10.14457/cu.the.2005.1270
title: การแสดงออกของยีนที่เกี่ยวข้องกับการย่อยสลายอะซีแนนพธิลีนใน Rhizobium sp. CU-A1 /
DOI: 10.17632/fmwnmmhn77.1
title: Algorithmic transformation of multi-loop master integrals to a canonical basis with CANONICA

description: The integration of differential equations of Feynman integrals can be greatly facilitated by using a canonical basis. This paper presents the Mathematica package CANONICA, which implements a recently developed algorithm to automatize the transformation to a canonical basis. This represents the first publicly available implementation suitable for differential equations depending on multiple scales. In addition to the presentation of the package, this paper extends the description of some aspects of the algorithm, including a proof of the uniqueness of canonical forms up to constant transformations.
DOI: 10.18462/iir.compr.2017.0244
title: Development of numerical modelling of isobutane vapour ejector.

description: Ejection system can be driven by free or inexpensive low temperature heat source, either solar or waste heat, as the main source of energy instead of electricity. These systems can be thought as a real alternative to compression devices in air-conditioning technologies. The paper deals with CFD numerical simulation along with experimental investigations carried out on a prototype for the case of isobutane as a working fluid under motive vapour temperature below 75°C. The numerical and experimental results of entrainment ratio were compared. A good accuracy between numerical and experimental results is observed. The divergent of the results are lower than 20% for tested series. The first results of LES (Large Eddy Simulation) modelling for isobutane vapour ejector are presented. The results show the actual state of the investigations.
DOI: 10.18462/iir.compr.2017.0246
title: Experimental investigations of propane minichannel condenser and evaporator.

description: Results of the experimental investigations of the exemplary mini-channel heat exchanger working as a condenser and an evaporator in a compression refrigeration system with propane as a working fluid were presented. The experiments were focused on the measurement of the mean heat transfer coefficient for refrigerant side of the exchanger. Mean heat transfer coefficient was measured by means of a combination of Wilson plot technique and separation of thermal resistances approach. The experiments confirmed the increase of heat transfer coefficient with increase of refrigerant mass flow rate for the tested mini-channel heat exchanger. Dimensionless correlation was proposed for pressure drop for the case of operation of the minichannel heat exchanger as a condenser and an evaporator.
DOI: 10.14457/cu.the.2005.1232
title: การศึกษาความต้องการการจัดกิจกรรมนันทนาการของผู้สูงอายุในกรุงเทพมหานคร /
DOI: 10.14457/cu.the.2005.1236
title: ความสัมพันธ์ระหว่างเพศสภาพต่อการให้คุณค่าตนเองของสตรีในกรุงเทพมหานคร /
DOI: 10.14457/cu.the.2005.1274
title: การออกแบบตัวควบคุมเอชอินฟินิตี้ สำหรับเพนดูลัมผกผันแบบหมุน โดยใช้เทคนิคการควบคุมเชิงเส้นที่เปลี่ยนตามพารามิเตอร์ด้วยตัวคูณบล็อกเต็ม /
DOI: 10.14457/cu.the.2005.1275
title: การหาคุณลักษณะของโลหะผสมอะลูมิเนียม-เหล็ก ที่ผลิตด้วยกระบวนการผลิตโลหะผสมเชิงกลแบบมวลรวม /
DOI: 10.18462/iir.compr.2017.0218
title: Evaluation of the discharge pressure pulsation in reciprocating compressor using computer simulation tools and experimental validation.

description: Discharge muffler is an important part of the reciprocating compressor which affects acoustic performance of the refrigeration system. Pulsation energy transferred from the discharge system of the compressor to the refrigerator can excite mechanical structures of the appliance. Optimization of the design in terms of acoustic performance, thermodynamic properties and cost is always a challenge for engineers. Discharge muffler of reciprocating compressors shall work well with different refrigerants. Availability of numerical acoustic simulation programs helps to reduce time and cost of development in multi refrigerant solutions always supported by experimental validation. Approach of muffler optimization operating for more refrigerants will be presented in this paper.
DOI: 10.18462/iir.compr.2017.0226
title: A new modeling strategy to simulate the compression cycle of reciprocating compressors.

description: A new modeling strategy is adopted to simulate the compression cycle of a small hermetic reciprocating compressor. The simulation model is based on a transient three-dimensional formulation to account for time and spatial variations of quantities in the computational domain. The discretization method automatically generates an orthogonal grid with adaptive mesh refinement (AMR) that locally adjusts the grid at each time step to yield accurate results. The time-dependent flow field and the valve dynamics were coupled and solved simultaneously, including the presence of suction and discharge mufflers. Numerical results were validated via comparison with experimental data and an analysis was carried out to identify the contributions of mufflers and valves to the thermodynamic losses.
DOI: 10.18462/iir.compr.2017.0281
title: Pressure pulsations passive damping in compressors manifolds: experimental and numerical approach development

description: Pressure pulsations in volumetric compressor manifolds have a high impact on compression power requirement and the reliability of manifold operation. These pulsations induce vibrations, noise, and in some cases, mechanical failure of piping or compressor valves. For pressure pulsation attenuation, different types of mufflers are applied using a design based upon the Helmholtz resonator approach. This design is particularly effective for constant revolution speed compressors. For contemporary applications of variable revolution speed compressors, other pressure pulsation attenuation methods are needed. Experimental investigations of the passive damping, using specially shaped nozzles, shows that nozzles when properly optimized can attenuate a wide range of frequencies, with minimal influence on the compression power. To obtain minimal influence on the compression power and to maximize pulsations damping, numerical simulations of the impulse flow damping combined with the standard steady-flow simulations are proposed as a nozzle geometry optimization tool.
DOI: 10.14457/cu.the.2005.1226
title: การเพิ่มความผิดมูลฐานตามกฎหมายว่าด้วยการป้องกันและปราบปรามการฟอกเงิน เป็นความผิดตามกฎหมายว่าด้วยการสอบสวนคดีพิเศษ /
DOI: 10.14457/cu.the.2005.1227
title: ความหลากหลายและความชุกชุมของแพลงก์ตอนพืชขนาดไมโครแพลงก์ตอน บริเวณปากแม่น้ำบางปะกง จังหวัดฉะเชิงเทรา /
DOI: 10.14457/cu.the.2005.1233
title: การหามวลและหลักมูลทางโคจรของดาวเคราะห์นอกระบบสุริยะ /
DOI: 10.14457/cu.the.2005.1234
title: ผลของเคซีนฟอสโฟเปปไทด์-อะมอร์ฟัสแคลเซียมฟอสเฟตต่อความแข็ง ของเคลือบฟันที่ถูกสึกกร่อนโดยเครื่องดื่มโคลา /
DOI: 10.14457/cu.the.2005.1239
title: ผลของการทำงานล่วงเวลาต่อสุขภาพแพทย์จบใหม่และอันตรายต่อผู้ป่วย /
DOI: 10.14457/cu.the.2005.1240
title: การพัฒนาเครื่องวัดปริมาณรังสีประจำบุคคลที่แสดงผลเชิงเลขชนิดเก็บข้อมูล บนหน่วยความจำถอดเปลี่ยนได้ /
DOI: 10.14457/cu.the.2005.1242
title: การสร้างกรณีทดสอบจียูไอจากยูเอ็มแอล /
DOI: 10.14457/cu.the.2005.1243
title: ภาวะที่เหมาะสมสำหรับการผลิตไบโอดีเซล ด้วยปฏิกิริยาทรานส์เอสเทอริฟิเคชัน โดยไลเปสจากแบคทีเรีย /
DOI: 10.14457/cu.the.2005.1245
title: การผลิตโมโนโคลนอลแอนติบอดีต่อ Vibrio alginolyticus /
DOI: 10.14457/cu.the.2005.1276
title: ผลกระทบของแอนไอโซโทรปีเนื่องจากโครงสร้างและหน่วยแรงต่อค่าโมดูลัสแบบเฉือนของทราย /
DOI: 10.14457/cu.the.2005.1277
title: การพัฒนาเครื่องกำเนิดกระแสอิมพัลส์ช่วงยาว สำหรับทดลองกับดักฟ้าผ่า พิกัดกระแส 5kA และ 2.5kA /
DOI: 10.18462/iir.compr.2017.0204
title: On-line discharge capacity detection for linear compressor.

description: In this paper, an on-line discharge capacity detection method for linear compressor is presented so that the capacity regulation control system of linear compressor can adjust its output upon the real working conditions. A mechatronic parameter, the vertical component of motional electromotive force, is applied as the character for discharge capacity detection. According to the variation tendency of this parameter, the pumping point and the top dead center (TDC) of the piston can be detected on-line. Then the discharge capacity of the linear compressor can be gained by comparing the relationship between the piston stroke, the pumping point and TDC. An experimental bench, as well as a simulation model is setup to verify the feasibility of this method. The investigation results show that the simulation prediction fit well with the experimental results. The discharge capacity of linear compressor under different working conditions can be detected and modulated in real time.
DOI: 10.18462/iir.compr.2017.0211
title: Numerical investigation of working fluid influence on stirling refrigeration machine performance.

description: This paper presents the main results of mathematical modeling operating cycle rotary-vane gas refrigerating machine that affect installation, machine control and working processes occurring in it at the specified criteria. A procedure and a graphical method for the rotary-vane gas refrigerating machine (RVGRM) are proposed. A parametric study of the main geometric variables and temperature variables on the thermal behavior of the system is analyzed. The model considers polytrope index for the compression and expansion in the chamber. Graphs of the pressure and temperature in the chamber of the angle of rotation of the output shaft are received. The simulation results show that the proposed model can be used to design and optimize Stirling refrigeration machine.
DOI: 10.18462/iir.compr.2017.0214
title: Thermo-economic approach to optimize air conditioning systems.

description: The mathematical model of the air conditioning system is based on the analysis of thermoeconomic indications of energy efficiency, which can be solved in complex: the determination of optimal parameters; determining the optimal device and optimization of operating modes of the refrigeration system. 
The model takes into account that the energy of the refrigeration unit may be transmitted in the form of heat and mechanical work under optimum conditions of the compressor. On the basis of the analysis carried out termoekonomicheskogo optimization of central air-conditioning system and a typical single-stage refrigeration system. 
The resulting optimization criterion resulted in costs that are described by an expression that includes prices for electricity with different loads: night, peak and half peak, fresh water volume flow, exergy of the gas compressor motor, water pump and electromechanical fan, air cooler fan motor, humidifier motor, Depreciation and operating costs of individual elements of the compressor, condenser, water pump, air cooler fan, humidifier, electric pump ktromotora with a humidifier to the number of hours of work per year. The developed model, built taking into account the requirements of thermo-economics and an adequate real air-conditioning scheme with a refrigeration unit, taking into account the three-zone payment for electricity.
DOI: 10.18462/iir.compr.2017.0248
title: Application of single blow technique for heat transfer measurement in packed bed of carrot.

description: The non-invasive measurement of the mean heat transfer coefficient for the packed bed of fruits and vegetables may be thought as still open issue. There is a clear need for the assessment of heat transfer conditions for various types of fruits and vegetables in order to accurately predict the thermal load that is necessary to select refrigeration equipment for cold storage chamber. Additionally, there is significant development in numerical modelling of heat and mass transfer processes in cold storage chambers for fruits and vegetables which requires precise heat transfer description. The theoretical basis for the indirect measurement approach of heat transfer coefficient for the packed bed of vegetables that is based on single blow technique is presented and discussed in the paper. The testing stand consisted of a dedicated experimental tunnel along with auxiliary equipment and measurement system are presented. The geometry of the tested packed bed of vegetables was presented. Selected experimental results of heat transfer and pressure drop are presented and discussed for the packed bed of carrot. These results were presented as dimensionless relationships.
DOI: 10.14457/cu.the.2005.1241
title: การตรวจหาการกลายพันธ์บริเวณอินเตอร์เซกเมนต์ของยีน SCN5A ในผู้ป่วยไหลตายที่มีลักษณะของกลุ่มอาการบรูกาดาด้วยเทคนิคเอสเอสซีพี /
DOI: 10.14457/cu.the.2005.1246
title: การเพาะเลี้ยงสาหร่ายสีเขียว Tetraselmis และโรติเฟอร์ Brachionus plicalitis แบบต่อเนื่องสำหรับอนุบาลลูกกุ้งกุลาดำวัยอ่อน /
DOI: 10.14458/kbu.the.2005.1
title: การพัฒนาความรับผิดชอบและความภาคภูมิใจในตนเอง ของตัวแทนประกันชีวิต บริษัท อเมริกันอินเตอร์แนชชั่นแนล แอสชัวรันส์ จำกัด กรุงเทพมหานคร โดยใช้การฝึกอบรมตามแนวจิตวิทยาเอ็กซิสเทนเชียล /
DOI: 10.18462/iir.compr.2017.0209
title: Energetic efficiency of cooling circuit depending on the charge of the previous and new alternative refrigerant.

description: Energetic efficiency of cooling circuit influences the amount of refrigerant, which is changing when refrigerants with high GWP are substituted by refrigerants with low GWP. Substitution of R404A for R449A or R448A was carried on experimental cooling box with own cooling circuit and original refrigerant R404A with air cooled condenser. Heating load was selected adequately to cooling output of evaporator, which was possible to regulate by speed of ventilators. Cooling circuit was tested by ClimaCheck. Measured were 2 pressures, 9 temperatures humidity of surroundings and inside the box. Parameters were measured in real time in chosen interval. Measurements were carried out with increasing and with decreasing charge of refrigerant. Optimizing of refrigerant charge was carried out in the range of very low and very high refrigerant charge due to installed collector in the liquid line. Deciding parameters for the evaluation of energetic efficiency before and after refrigerant substitution were superheating and subcooling under stabile function of cooling circuit. Measurements proved different results with compared refrigerants and the need for adjusting of thermostatic expansion valve after the retrofit.
DOI: 10.18462/iir.compr.2017.0219
title: Evaluation of the discharge pressure pulsation in reciprocating compressor using computer simulation tools and experimental validation.

description: Discharge muffler is an important part of the reciprocating compressor which affects acoustic performance of the refrigeration system. Pulsation energy transferred from the discharge system of the compressor to the refrigerator can excite mechanical structures of the appliance. Optimization of the design in terms of acoustic performance, thermodynamic properties and cost is always a challenge for engineers. Discharge muffler of reciprocating compressors shall work well with different refrigerants. Availability of numerical acoustic simulation programs helps to reduce time and cost of development in multi refrigerant solutions always supported by experimental validation. Approach of muffler optimization operating for more refrigerants will be presented in this paper.