ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers最新文献

A Review on Thermodynamic Analysis of thermal Heat Dissipating Fins 热散热翅片的热力学分析综述

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2021-11-12 DOI: 10.37591/JORACHV.V8I2.1185

T. Soni, D. Rathore

引用次数: 0

A Review on the Performance of the Phase Change Material on the Solar Energy Collector Devices 相变材料在太阳能集热器上的性能研究进展

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2021-05-29 DOI: 10.37591/JORACHV.V8I1.1120

J. Rani, Kriti Srivastava

{"title":"A Review on the Performance of the Phase Change Material on the Solar Energy Collector Devices","authors":"J. Rani, Kriti Srivastava","doi":"10.37591/JORACHV.V8I1.1120","DOIUrl":"https://doi.org/10.37591/JORACHV.V8I1.1120","url":null,"abstract":"Energy is the basic need for all developing countries and India is also a developing country. Energy is central to performing the interrelated economic, social aim of human development. Solar energy is a rapid growing technology and have gained a lot of attention because it is renewable source of energy and is available in abundance in India. Due to over exploitation of fossil fuel soon there will be its scarcity. This will not only save the fuel but also reduce the pollution. So, it is very important to switch towards renewable source of energy. Phase change material is the material that is utilized to store the solar energy for long time and that can be used at night or during rainy and cloudy days. This paper discussed the performance of the phase change material if used in solar water heater/solar air heater. The phase change material is used in the thermal energy storage device the performance of the storage is increased and the exergy is also increased. The limitation of the solar energy collector devices is changing after used phase change material (PCM). Analyzed that if PCM is used the supply temperature is not suddenly down it slowly gets down and supply hot water for a long time. In general, solar energy collector devices or solar water heater gives hot water up to 4 PM but after using PCM the efficiency of the solar water heater is increased, time of collect hot water is increased and we can get hot water even after sunset.","PeriodicalId":91841,"journal":{"name":"ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88262214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the Absorber Plat Groove Roughness on Performance of Solar Air Heaters 吸收板槽粗糙度对太阳能空气加热器性能的影响

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2021-02-02 DOI: 10.37591/JORACHV.V7I3.878

S. R. Kumar

{"title":"Effect of the Absorber Plat Groove Roughness on Performance of Solar Air Heaters","authors":"S. R. Kumar","doi":"10.37591/JORACHV.V7I3.878","DOIUrl":"https://doi.org/10.37591/JORACHV.V7I3.878","url":null,"abstract":"An experimental investigation on heat and fluid flow characteristics of fully developed turbulent flow in a rectangular duct having repeated integral transverse chamfered rib-groove roughness on one broad wall has been carried out. The flow Reynolds number of the duct varied in the range of approximately 3000–21000, most suitable for solar air heater. Experimentation has been done on chamfered rib-groove roughness having 60° V groove varying relative roughness pitch of 4.5, 6, 7, 8 and 10, chamfer angle of 5°, 12°, 15°, 18°, 22° and 30°, relative groove position of 0.3, 0.4, 0.5 and 0.6, and relative roughness pitch of 0.022, 0.03, 0.35 and 0.04. The effect of roughness parameters on thermo-hydraulic performance parameter index has been studied experimentally and optimized. The maximum thermo-hydraulic performance parameter index for chamfered rib-groove roughened surface is observed of about 2.08 for the relative roughness pitch of 6, relative groove position of 0.4 and chamfer angle of 18° for relative roughness height of 0.04. The thermo-hydraulic performance parameter index of the chamfer rib-grooved surface compared with the square ribbed, chamfered rib, square rib-grooved surface. It can be seen that the thermo-hydraulic performance parameter for chamfered rib-groove roughness is the highest for the Reynolds number lower than about 12000, which is most suitable for solar air heater.","PeriodicalId":91841,"journal":{"name":"ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91073865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Development of Centralized Air Conditioning Plant Model with Water Cooled Chiller 水冷式中央空调机组模型的设计与开发

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2021-02-02 DOI: 10.37591/JORACHV.V7I3.1054

J. Yadav, Syed Zaheer Abba, N. Kumar, K. V. Babu, V. Kiran, V. A. Kumar

{"title":"Design and Development of Centralized Air Conditioning Plant Model with Water Cooled Chiller","authors":"J. Yadav, Syed Zaheer Abba, N. Kumar, K. V. Babu, V. Kiran, V. A. Kumar","doi":"10.37591/JORACHV.V7I3.1054","DOIUrl":"https://doi.org/10.37591/JORACHV.V7I3.1054","url":null,"abstract":"The work consists of how a proposed centralized air conditioning is designed and its criterion for a new building in college. Central Air Conditioners working is a complex and cumbersome topic which takes a lot of time and effort. It’s a difficult task to explain the entire parts, its working and maintenance. Here an effort is made to explain about the designing of Ducts used in a central A/C. A commercial building is taken for reference and each floor’s Duct designing is explained. It consists of three floors. The main objective is to create a thermally controlled environment within the space of a building envelope such as office space. The tentative air conditioning load for the system shall be 1.5 TR approx. Water-cooled chillers with secondary variable pumping system are proposed to make the system energy efficient. The duct design was started and using the duct sizer version 6.4 we calculated the optimum duct sizes required for the 3 floors. The duct dimensions for accurate flow of air volume to maintain the interior environment of the building in an optimal state is found. The design of air-conditioning includes heat load estimation, selection of Chillers, Pumps, Air Handling Units (AHU) based upon design, the model will be fabricated. Based on the design we fabricated the ducts through which the thermally cooled environment is developed. Results of this work included the design of accurate dimensions required for a building, Volume flow rate of air flowing in each room, Fabrication of the ducts and final prototype of a working water-cooled chiller was created.","PeriodicalId":91841,"journal":{"name":"ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86842074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar Stirling Power Generation 斯特林太阳能发电

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2021-02-02 DOI: 10.37591/JORACHV.V7I3.1055

A. Kumari, Kavita Shrivastava, Rahul Patil, A. Pawar, Pradnya Kinge, Nilesh C. Jadhav

{"title":"Solar Stirling Power Generation","authors":"A. Kumari, Kavita Shrivastava, Rahul Patil, A. Pawar, Pradnya Kinge, Nilesh C. Jadhav","doi":"10.37591/JORACHV.V7I3.1055","DOIUrl":"https://doi.org/10.37591/JORACHV.V7I3.1055","url":null,"abstract":"We know the Sun is the natural and unlimited source of the energy which is available at free of cost. Solar Stirling plant is a far more effective and efficient means of producing electrical energy. This technology is recent addition to renewable energy technique. It brings the massive change in the way we use the Solar energy. It Includes Stirling Engine which was invented by Robert Stirling in 1816. Stirling engine is most unique and main component of Solar Stirling plant. The Stirling Engine uses the heat from the Sun in order to rotate and produce electrical energy. It is the heat engine which utilizes cyclic compression and expansion of fluid. The greatest thing about this engine is it can virtually use any heat source in order to run the engine and what is better permanent heat source that the Sun. Unlike the standard PV panels, the Solar Stirling Plant is by wide margin easier and cheaper to build and at the same time it is more effective at harnessing the solar energy from the Sun. It is amazing to know that the Sun actually produces enough energy every single day to sustain the average household electrical needs by constructing the plant which produces enough energy.","PeriodicalId":91841,"journal":{"name":"ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86859521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Investigation on Performance of Vapor Compression Refrigeration System using Nanorefrigerant (R134a+Al2O3) with/without Evaporative Condenser 纳米制冷剂(R134a+Al2O3)蒸汽压缩制冷系统有/无蒸发冷凝器性能的实验研究

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2021-02-02 DOI: 10.37591/JORACHV.V7I3.973

N. Raja, Avinash D. Khanderao

{"title":"Experimental Investigation on Performance of Vapor Compression Refrigeration System using Nanorefrigerant (R134a+Al2O3) with/without Evaporative Condenser","authors":"N. Raja, Avinash D. Khanderao","doi":"10.37591/JORACHV.V7I3.973","DOIUrl":"https://doi.org/10.37591/JORACHV.V7I3.973","url":null,"abstract":"In traditional refrigeration system the main focus of researchers is always to improve its performance by reducing work of compression and enhancing the heat transfer rate in different heat exchangers and this can be achieved by adopting suitable technique. In this research work experiment is carried out on vapor compression refrigeration test rig using nanorefrigerant of R134a as base refrigerant and nanoparticles of aluminium oxide Al2O3 in different concentration so that variation in heat transfer rate can be observed. The different concentration of Al2O3 (gm/litre) in R134a were prepared, studied and tested experimentally in VCR test rig. The test rig consists of evaporative condenser as conventional air-cooled condenser does not perform well in hot and dry climatic conditions. This evaporative air cooling offers desired heat rejection rate in condenser at high pressure and enhances system performance. The investigations show that nanorefrigerant (R134a + Al2O3 0.5 g/L Concentration and 50–60 nm size) with evaporative condenser recorded the highest coefficient of performance among all other combination of nanorefrigerant. This indicates that nanorefrigerant can be safely experimented without any blockage or difficulty. The conventional VCR system operated with evaporative condenser without nanorefrigerant also shows improvement in performance compared to simple VCR with air cooled condenser. This system is suitable for hot and dry climate conditions.","PeriodicalId":91841,"journal":{"name":"ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85771665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar Assisted Dehumidification System Using Liquid Desiccant (Design) 使用液体干燥剂的太阳能辅助除湿系统(设计)

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2020-10-08 DOI: 10.37591/JORACHV.V7I2.1008

A. Prabhu, Vibhav Pothare, S. Patil, Omkar Khilare

{"title":"Solar Assisted Dehumidification System Using Liquid Desiccant (Design)","authors":"A. Prabhu, Vibhav Pothare, S. Patil, Omkar Khilare","doi":"10.37591/JORACHV.V7I2.1008","DOIUrl":"https://doi.org/10.37591/JORACHV.V7I2.1008","url":null,"abstract":"Approximately one-third of the food produced (about 1.3 billion ton), worth about US $1 trillion, is lost globally during postharvest operations every year. India, being agricultural dominated country, large amount of agricultural products is cultivated each year, but due to lack of proper storage facilities considerable amount of agricultural products like grains, onions, potatoes gets spoiled /rote due to atmospheric moisture. India has incurred post harvest losses to the tune of 502,389 metric tons of rice and 133,206 metric tons of wheat. Indian farmers incur Rs 92,651 Crores per year in post-harvest losses. The main spoiling factor is moisture. Also in case of air conditioning systems like fish storages, vegetable storages with heavy latent loads, removing the moisture content prior to cooling of air will drastically increase cooling power of system. All of these factors become the reason of high power consumption and loss of food products. Through this project we are trying to build an economical machine that can facilitate food storage in humid countries like India.","PeriodicalId":91841,"journal":{"name":"ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88692041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar-driven Ejector Refrigeration Technologies: A Study 太阳能喷射式制冷技术研究

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2020-10-08 DOI: 10.37591/JORACHV.V7I2.833

D. K. Joshi

引用次数: 0

Remapping of ECU Engine (KTM 390) ECU引擎重配(KTM 390)

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2020-10-08 DOI: 10.37591/JORACHV.V7I2.1010

Sunil Sopnur, Vedang Mahurkar, Navin Kodam, Omkar K. Shinde

引用次数: 0

Design, Calculation and Cost Estimation of HVAC system for School Building 学校建筑暖通空调系统的设计、计算及造价估算

ASHRAE winter conference papers. American Society of Heating, Refrigeration and Air-Conditioning Engineers Pub Date : 2020-10-08 DOI: 10.37591/JORACHV.V7I2.1013

S. Shukla, Uma S. Dubey, Pranshu Parouha, Shubham Patel

引用次数: 2