cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18462/iir.icr.2015.0094
title: The temperature control of chilled water for the central air conditioning systems.

description: The variable refrigerant flow (VRF) air conditioning systems have been widely used to home air conditioner. The VRF system can provide variable refrigerant flow by changing the speed of compressor for energy saving and more comfortable air conditions. Recent years, the energy saving technique for central air condition system becomes important, and the inverter applied as variable frequency drive control the speed of compressor motor technologies have been applied to central air conditioning systems. The central air conditioning system with the inverter compressor (ICCACS) providing variable refrigerant flow becomes an important solution for energy saving. This study built the central air conditioning systems dynamic model with operation data. The appropriate refrigerant flow is calculated by refrigerating capacity. A PI controller is designed to control the speed of compressor for keeping the temperature of chilled water in command temperature. The energy consumption is investigated under transient and steady processes.
DOI: 10.18462/iir.icr.2015.0095
title: Taguchi and utility concept optimization of parabolic solar collector assisted ground coupled heat pump system for space heating applications.

description: In this paper optimization of operating parameters of a solar assisted ground coupled heat pump (SAGCHP) system is discussed for space heating application under Indian climatic conditions using Taguchi method and utility concept to achieve optimum COP of the SAGCHP system with minimum solar collector area and minimum ground heat exchanger length. Taguchi method is employed with lower the better concept to achieve minimum solar collector area and minimum GHX length whereas higher the better concept is used to obtain maximum COP. To achieve these objectives a mixed level L18(21,37) orthogonal array has been selected. The method is implemented for a 2 ton heating load application in winter season. Results obtained from 18 trial runs are analyzed using signal to noise ratio and ANOVA method. The best levels of contributing parameters for optimum solar collector area and GHX length obtained from Taguchi method are further optimized using the utility concept to obtain a single set of optimum parameters for maximum COP. The implementation of utility concept has resulted in 8.8% and 7.3% reduction in solar collector area and GHX length respectively and about 9.13% increase in COP of SAGCHP system compared to the values obtained by the Taguchi method.
DOI: 10.5517/ccdc.csd.cc1mxrgr
title: CCDC 1517185: Experimental Crystal Structure Determination

description: Related Article: Peter G. Jones, Eva-Maria Zerbe|2016|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.18462/iir.icr.2015.0093
title: The study of fuzzy control applied to variable refrigerant flow temperature control for electric vehicle air conditioning system.

description: The control strategies of electric motor driving air-conditioning (A/C) system for electric vehicle will affect temperature tuning response and energy consumption. In the refrigeration cycle of automobile A/C system, the outlet temperature of the evaporator can be controlled with variable refrigeration flow (VRF). The compressor speed and opening of expansion valve are two control variables for VRF. It is a non linear multiple inputs control system. In this manuscript, we use an embedded controller to control compressor speed to vary refrigeration flow of automobile A/C system with fuzzy control rules. Comparing temperature control response and energy consumption with ON/OFF control, conventional feedback control; known by the combined results, the fuzzy control is better than the others.
DOI: 10.14457/kmutt.the.2010.301
title: Multi-objective optimization for grooming, routing and wavelength assignment in optical network design
DOI: 10.14457/kmutt.the.2011.236
title: Performance analysis of optimum combining and multi-hop relay systems in wireless fading channels with co-channel interference
DOI: 10.14457/kmutt.the.2012.69
title: ศึกษาเส้นใยนาโนผสมไนลอน6-ไคโตซานด้วยกระบวนการอิเล็กโทรสปินนิงสาหรับการดูดซับไอออนของโลหะทองแดง
DOI: 10.14457/kmutt.the.2012.70
title: การพัฒนาพีเอชเซ็นเซอร์เชิงแสงโดยใช้เซลลูโลสอะซิเตดเมมเบรนที่ตรึงด้วยสีย้อมอะลิซาริน เยลโล อาร์
DOI: 10.14457/kmutt.the.2012.71
title: Synthesis and characterization of nanographite and graphene for ph sensor
DOI: 10.14457/kmutt.the.2012.72
title: Effect of drying methods and storage conditions on the quality of rice (oryza sativa l)
DOI: 10.18462/iir.icr.2015.0090
title: Enhancement of generation of high-temperature steam from a novel adsorption heat pump assisted by thermal energy storage material.

description: Enhancement of generation of high-temperature steam using a novel adsorption heat pump is investigated. In this study, enhancement of the preheating process by the use of thermal energy storage material was investigated. The effect of the heat capacity of adsorbent on the mass of steam generated was theoretically investigated. As a result, while the mass of water vapor adsorbed during the preheating was increased with the heat capacity of the adsorbent, the temperature after the preheating process decreased. It was found that there was the maximum value in the mass of steam generated. In the experiment, an additive was inserted as the thermal energy storage material to increase the heat capacity of adsorbent. When the overall heat capacity of the packed bed of the adsorbent was increased by 18% by using the additive, the mass of steam generated per unit mass of the adsorbent was increased by 25%.
DOI: 10.14457/kmutt.the.2012.73
title: Influence of thermal stress on diamond-like carbon (dlc) film properties as related to hdd slider
DOI: 10.14457/kmutt.the.2012.74
title: Mathematical model for estimating of salt intrusion under changing of climatic conditions
DOI: 10.14457/kmutt.the.2012.75
title: Numerical simulation of the active and break of the summer monsoon over southeast asia under climate change scenarios
DOI: 10.14457/kmutt.the.2012.76
title: Preparation and characterization of alumina nanoparticles in deionized water using laser ablation technique
DOI: 10.14457/kmutt.the.2012.77
title: ชุดการทดลองสาหรับวัดอัตราการไหลของของไหลโดยใช้วิธีเลเซอร์ด็อปเพลอร์
DOI: 10.14457/kmutt.the.2014.132
title: The automated blood vessel segmentation framework with hybrid level set method
DOI: 10.14457/kmutt.the.2011.237
title: การพัฒนาบทเรียนคอมพิวเตอร์การสอน วิชาออปแอมป์และลิเนียร์ไอซีหลักสูตรระดับประกาศนียบัตรวิชาชีพชั้นสูง
DOI: 10.14457/kmutt.the.2011.238
title: การพัฒนาบทเรียนคอมพิวเตอร์การสอนวิชาคณิตศาสตร์ ชั้นประถมศึกษาปีที่ 4
DOI: 10.14457/kmutt.the.2011.239
title: ความสัมพันธ์ระหว่างปัจจัยแวดล้อมและการยอมรับการเรียนการสอน e-Learning ของนักศึกษาระดับปริญญาตรี คณะวิศวกรรมศาสตร์ มหาวิทยาลัยเทคโนโลยีสุรนารี
DOI: 10.14457/kmutt.the.2012.78
title: Spectroscopic studies of bismuth borate glass doped with dy2o3
DOI: 10.14457/kmutt.the.2012.79
title: การศึกษาปฏิสัมพันธ์ระหว่างโปรตีน HtrA2 และ IAP ของกุ้งกุลาดำ
DOI: 10.14457/kmutt.the.2012.80
title: การขับเคลื่อนมอเตอร์เหนี่ยวนำแบบไร้เซนเซอร์วัดความเร็วโดยใช้ตัวสังเกตเต็มอันดับแบบปรับตัว
DOI: 10.14457/kmutt.the.2013.146
title: ความสัมพันธ์ของชนิดและความเข้มข้นของกรดอินทรีย์ในบรรยากาศต่อการตกสะสมของสารกรด
DOI: 10.14457/kmutt.the.2014.133
title: การวางแผนการผลิตรวมที่เหมาะสมของการปรับกระบวนการผลิตใหม่ในการผลิตหมึกพิมพ์
DOI: 10.18462/iir.icr.2015.0087
title: Coil side heat transfer characteristics study for a helical-coil heat exchanger.

description: Helical coil heat exchanger has been widely used in water heating purpose due to its higher heat transfer performance. Parameters, such as coil number, Reynolds number, and coil pitch are known as the key to the heat transfer. However, there is relatively rare study to stress on the heat transfer characteristics under a fixed heat transfer area condition. In this study, an experimental apparatus for a helical coil heat exchanger was established to study the shell side heat transfer performance for both counter and parallel flow patterns. The experiment was conducted under various coil diameters, coil numbers, coil pitches, and coil heights, while restricting on the same heat transfer area. The results show that the coil side heat transfer coefficient strongly related to coil diameter, coil pitch, coil curvature, and the Reynolds number. The results also verified the influence of coil curvature and coil pitch to the heat transfer performance.
DOI: 10.18462/iir.icr.2015.0089
title: Theoretical analysis on a novel hybrid refrigeration cycle with two ejectors and internal heat exchanger for domestic refrigerator-freezers.

description: This study presents a novel domestic refrigerator-freezer refrigeration cycle (NRFC), in which two ejectors and an internal heat exchanger are employed to enhance the refrigeration performance. The theoretical investigation using environmental friendly refrigerant R600a has been carried out, the simulation results show that the NRFC exhibits higher coefficient of performance (COP) and larger cooling capacity than the conventional refrigerator-freezer cycle (CRFC) and single ejector enhanced refrigerator-freezer cycle (ERFC). Under the given operation conditions, it is found that the COP and refrigeration capacity could be improved by 22.1% and 32.0% over the conventional refrigerator-freezer cycle, respectively. The performance characteristics of the novel cycle show its potential practical advantages in domestic refrigerator-freezer systems.
DOI: 10.18462/iir.icr.2015.0085
title: Active cooling and thermal management of a downhole tool electronics section.

description: High Temperature (HT) wellbores represent one of today’s biggest challenges for the oil and gas industry. The majority of well intervention wireline tools contain temperature sensitive electronics that are not able to withstand the high temperatures of HT wellbores (&gt; 150°C), for an extended period of time. This work presents the design and construction of an actively cooled laboratory prototype, which is able to operate at temperatures which are higher than the temperature limit of the electronics. A different concept of heat management, compared to prior works, is presented: the design combines active and passive cooling techniques, aiming at an efficient thermal management, preserving the tool compactness and avoiding the use of moving parts. Thermoelectric coolers were used to transfer the dissipated heat from the temperature-sensitive electronics to the external environment. Thermal contact resistances were minimized and thermally insulating foam protected the refrigerated microenvironment from the hot surroundings.
DOI: 10.18462/iir.icr.2015.0086
title: Comprehensive assessment of centrifugal chillers using next generation refrigerant R1233zd(E).

description: A new olefin refrigerant, R1233zd(E), has been identified for use in HVAC chillers. R1233zd(E) is being considered for a number of applications including use as, but not limited to, a solvent, a foam blowing agent, a refrigerant in large centrifugal chillers, and a refrigerant in heat recovery equipment. R1233zd(E) provides specific environmental and safety features of interest including very short atmospheric life (26 days), no impact to stratospheric ozone, ultra-low Global Warming Potential (GWP of 1), no measured secondary adverse environmental impacts (such as increases in ground level ozone or trifluoroacetic acid (TFA)), low toxicity, and non-flammability. This paper will provide an overall assessment of applying this new olefin refrigerant in centrifugal water cooled chillers. System performance characteristics will be compared to a number of refrigerants including R134a, R1234ze(E), R245fa, and R123. LCCP emission profiles will be compared. Reliability indicators, such as material compatibility and chemical stability, will be provided.
DOI: 10.18462/iir.icr.2015.0082
title: Vapor compression cycle model capable of simulating well described and not so well described refrigerants.

description: This paper presents a vapor compression cycle model consisting of a compressor, a condenser, an expansion device, an evaporator, and an optional internal heat exchanger. The model allows for simulations of well-described refrigerants using the high accuracy equations of state contained in REFPROP. Moreover, the model allows one to quickly and easily create a Peng-Robinson equation of state for not-so-well-described refrigerants (ones where little or no experimental data are available). It also allows one to quickly and easily create Peng-Robinson equations of state for a large number of theoretical refrigerants by parametrically varying critical state properties, acentric factor, and ideal gas specific heat at constant pressure. In both cases, the Peng-Robinson equations of state can be coupled with the cycle model to allow for easy, fast, and inexpensive screening and evaluation of the performance potentials of a large number of well-described and not-so-well-described refrigerants in a subcritical vapor compression cycle.
DOI: 10.18462/iir.icr.2015.0083
title: Saturated pressure measurements of cis-pentafluoroprop-1-ene (R1225ye(Z)).

description: Cis-1,2,3,3,3-pentafluoroprop-1-ene (R1225ye(Z)) is a non-flammable potential working fluid possessing low global warming potential. Toxicity testing has uncovered some concerns with sub-chronic and chronic exposures. In this paper, ninety-six vapor pressure data points for a saturation temperature range from approximately 233 K to 366 K from two different laboratories are presented. These data are regressed using Wagner and extended Antoine correlations. The root mean square errors of the Wagner and Antoine correlations relative to the measured data are 0.084% and 0.094%, respectively. The vapor pressure curve of R1225ye(Z) is shown to be similar to trans-1,3,3,3-tetrafluoroprop-1-ene (R1234ze(E)). The normal boiling temperature, critical temperature, critical pressure, critical density, acentric factor, and ideal gas specific heat at constant pressure at a temperature of 300 K of R1225ye(Z) are estimated to be 253.62 K, 380.05 K, 3529 kPa, 517.17 kg/m3, 0.3256, and 101.9 kJ/kmol K, respectively.
DOI: 10.18462/iir.icr.2015.0080
title: Performances of a refrigeration compressed air dryer using a natural refrigerant (R744).

description: A compressed air dryer is a common application for a vapor compression circuit. Typical working conditions for this circuit are evaporating temperature between 0°C and 5°C and condensing temperature variable between 35°C and 65°C. Generally, a HFC refrigerant fluid is used in this kind of application, in particular R134a , R407C and R404a. In any case all these refrigerant HFC fluids have a high GWP value. As consequence it is interesting to look for alternative refrigerant fluids with lower GWP value but with equal or comparable energy efficiency. Compressed air dryer with cooling capacity above 50kW are usually designed using flooded evaporator with special control to guarantee stable air dew point temperature. Important parameters to take into consideration for this application are dew point temperature of compressed air after the treatment and energy consumption. In this study performances of a compressed air dryer unit using R744, in transcritical condition as refrigerant fluids, are presented. A special dryer unit has been designed using R744, built and tested. The results demonstrate how, from an air side point of you, performances are changing. The considered parameters are the energy consumption of the compressor and the dew point temperature reached by the air. Finally, a short overview on the economic impact of the new design is presented and possible future improvement on the efficiency in particular related to the control.
DOI: 10.18462/iir.icr.2015.0079
title: Design and test results of a refrigeration compressed air dryer using a natural refrigerant (R744).

description: A compressed air dryer is a common application for a vapor compression cycle. Typical working conditions for this circuit are evaporating temperature between 0°C and 5°C and condensing temperature variable between 35°C and 65°C. Generally, a HFC refrigerant fluid is used in this kind of application, in particular R134a , R407C and R404a. In any case all these refrigerant HFC fluids have a high GWP value. As consequence it is interesting to look for alternative refrigerant fluids with lower GWP value but with equal or comparable energy efficiency. Compressed air dryer with cooling capacity above 50kW are usually designed using flooded evaporator with special control to guarantee stable air dew point temperature. In this study results from design and test on a compressed air dryer unit using R744, in transcritical condition as refrigerant fluids, are presented. A special dryer unit has been designed using R744, built and tested. All the refrigerant and air circuit parameters working at nominal condition and at no air load condition have been recorded. Tests have been planned also at extreme condition in terms of high and low water temperature at the gas cooler. The results demonstrate how, from an air side point of you, performances are changing. The considered parameters are the performance at the evaporator heat exchanger and the dew point temperature reached by the air. In addition also the economic impact of this design has been considered. The conclusion is that, for this application the performances of the R744 system is comparable with a standard HFC dryer, while a big difference is obtained in terms of energy consumption. Finally, a short overview on the economic impact of the new design is presented and possible future improvement on the efficiency in particular related to the control.
DOI: 10.5517/ccdc.csd.cc1mxs4g
title: CCDC 1517206: Experimental Crystal Structure Determination

description: Related Article: Peter G. Jones, Eva-Maria Zerbe|2016|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.14457/kmitl.the.2003.84
title: บทเรียนวีดิทัศน์ซีดี เรื่อง การตัดต่อภาพและเสียง /
DOI: 10.14457/kmitl.the.2003.85
title: บทเรียนผ่านระบบเครือข่ายอินทราเน็ต เรื่องระบบเครือข่ายท้องถิ่นสำหรับนักศึกษาสถาบันเทคโนโลยีพระจอมเกล้าเจ้าคุณทหารลาดกระบัง /
DOI: 10.14457/kmitl.the.2003.86
title: บทเรียนวีดิทัศน์เรื่อง การติดตั้งเครื่องปรับอากาศแบบแยกส่วน /
DOI: 10.5281/zenodo.166513
title: Example Instantiations Of The E-Infrastructure Catalogue Of Services [Vsn02]

description: This document contains updated example instantiations of the e-Infrastructure Catalogue of Services. This supports a published framework for creating a Catalogue of Services (CoS), primarily intended for e-Infrastructure services, which describes services at a high level and makes them discoverable.
DOI: 10.14457/kmitl.the.2003.87
title: บทเรียนวีดิทัศน์เรื่องการใช้ไมโครซอฟท์เวิร์ด /
DOI: 10.14457/kmitl.the.2003.88
title: วีดีทัศน์เพื่อการฝึกอบรมเรื่อง การตรวจสถานประกอบการเกี่ยวกับวัตถุอันตราย /
DOI: 10.14457/kmitl.the.2003.89
title: พฤติกรรมการบริหารงานของผู้บริหารสถานศึกษา ตามทัศนะของครูในโรงเรียนสังกัดกรมสามัญศึกษา จังหวัดชลบุรี /
DOI: 10.14457/kmitl.the.2003.90
title: กระบวนการผลิตที่ลดต้นทุนการผลิตผ้าบาติกระบายสีในภาคตะวันออกเฉียงเหนือ จังหวัดอุดรธานี /
DOI: 10.14457/kmitl.the.2003.91
title: ปัจจัยที่ลดทอนความแม่นยำของจีพีเอสในภาวะที่มีความแปรปรวนของชั้นบรรยากาศไอโอโนสเฟียร์สูงสุด /
DOI: 10.14457/kmitl.the.2003.92
title: คุณลักษณะที่พึงประสงค์ของอาจารย์ที่ปรึกษาองค์การช่างเทคนิคในอนาคตแห่งประเทศไทย ระดับหน่วย /
DOI: 10.14457/kmitl.the.2003.93
title: การลดการถ่ายเทความร้อนจากหลังคาดาดฟ้าที่ใช้ประโยชน์โดยการปลูกร้านไม้เลื้อย /
DOI: 10.14457/kmitl.the.2003.94
title: การออกแบบสร้างชุดถอดรหัส Viterbi ขนาดเล็กสำหรับระบบโทรศัพท์เคลื่อนที่ยุคที่ 3 /
DOI: 10.14457/kmitl.the.2004.581
title: การเพิ่มประสิทธิภาพการระบายอากาศสำหรับอาคารพักอาศัยประเภททาวเฮ้าส์ (Townhouse) /
DOI: 10.14457/kmitl.the.2003.95
title: ผลของวงจรสนับเบอร์ที่มีต่อมอสเฟตกำลังในด้าน EMI /
DOI: 10.14457/kmitl.the.2003.96
title: บทเรียนคอมพิวเตอร์ช่วยสอน เรื่อง คอมพิวเตอร์กราฟิกส์เบื้องต้น /
DOI: 10.14457/kmitl.the.2003.97
title: อิทธิพลของสารหล่อลื่นของแข็งต่อการหล่อลื่นแบบเทอร์โมอิลาสโตไฮดรอไดนามิกส์ /
DOI: 10.18462/iir.icr.2015.0077
title: State-of-the art of frost deposition on flat surfaces.

description: This paper presents a comparative study of predictive methods of frost growth on flat surfaces. The study focuses on the comparison between 4 different existing theoretical models or empirical correlations and a database gathering almost 556 test points available in the literature. Impacts of air velocity, relative humidity and wall temperature are studied. The latter is found to have a significant impact on frost development. Quantitative and qualitative analysis of the predictive methods are proposed. This study leads to the identification of the main issues in the field of modelling of frost deposition on flat plates.
DOI: 10.18462/iir.icr.2015.0078
title: Heat pump application in the chinese market, a review of the recent ten years.

description: Heat pumps is regarded as a renewable energy technology in China, and it is mainly used in building sector. This paper provides a review of the heat pump implementation for the past ten years in the Chinese market, concentrating on related governmental policy and applications in renewable energy in buildings including green buildings. Both ground source heat pumps (GSHP) and air source heat pumps (ASHP) are reviewed. By analysing the relationship between policy and market, it can be concluded that the heat pump market in China is dominated by governmental financial subsidies. A period of market recession can be expected once the subsidy stops. Heat pumps should be implemented based on specific local conditions and be considered as a part of the energy system. Analysis of the local conditions, system design and construction, and system operation are equally important for a successful heat pump project.
DOI: 10.18462/iir.icr.2015.0075
title: Assessment of next generation refrigerant R513A to replace R134A for chiller products.

description: Regulatory and voluntary actions are beginning to limit the direct global warming potential (GWP) of refrigerants used in many applications. A new class of fluids called unsaturated hydrofluoro-carbons or hydrofluoroolefins (olefin HFCs) has been developed to address this concern. These new fluids are being blended with existing HFCs to obtain lower GWP replacements or substitutes for today’s refrigerants. This paper provides an overall assessment of the application of R513A, an azeotropic blend of R1234yf and R134a (56%wt/44%wt), as an alternative to R134a. R513A provides specific environmental and safety features of interest including: no impact to stratospheric ozone, 56% reduction in GWP compared to R134a, no significant secondary adverse environmental impacts, low toxicity, and non-flammability. This paper will review thermodynamic cycle performance and heat transfer characteristics of R513A relative to R134a. Material compatibility and chemical stability have been demonstrated to be favorable and test results will be compared to R134a.