دانلود رایگان مقاله لاتین خشک کردن لباس با گرمای تلف شده از تهویه مسکون از سایت الزویر
عنوان فارسی مقاله:
عملکرد یک کابینه خشک کردن لباس با استفاده از گرمای تلف شده از یک نوع تقسیم تهویه مطبوع مسکونی
عنوان انگلیسی مقاله:
Performance of a clothes drying cabinet by utilizing waste heat from a split-type residential air conditioner
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Drying clothes is one of the biggest sectors that consume huge amount energy. Based on a study in USA, electricity consumption for drying clothes is estimated as 71 Terawatt hours (TWh) per year it is up to 9% of electricity consumption in the USA [1,2]. For Indonesian case, to the best knowledge of the authors, there is no report on energy consumption for drying clothes. Typical method of drying clothes in Indonesia is natural drying using solar energy. Several commercial sectors, such as hotels and hospitals, use commercial drying machines for drying clothes. The typical method of commercial clothes dryer is tumbler rotating drum and flowed by hot air of 40–60 °C [3]. Recently, housing in densely populated cities in Indonesia, do not provide sufficient spaces for drying clothes naturally. Thus, several places around the house such as windows, balcony, garage, front gate, etc are used for drying clothes naturally. This method of drying disturbs esthetics of housing. Thus, laundry business is now growing significantly in Indonesia. The commercial drying and laundries in Indonesia use electricity, kerosene, and natural gas as energy source. This sector is predicted will consume fossil fuelsignificantly. On the other hand, due to increase in economic growth and humid climate of Indonesia, the use of split-type residential air conditioner (RAC) is growing significantly, in particular for dense populated cities. As a note, condenser of RAC releases a significant waste heat to the ambient for free. This waste heat can be utilized as heat source for clothes drying. This is the background of the present study. The method of using the heat from a condenser of vapor compression cycle is known as heat pump drying. Several researchers have published their work related to heat pump drying [4]. The heat pump drying has been used to dry several objects such as clothes, agricultural products, food, medicines, etc. In particular for clothes dryer, several works were found in literature. Braun et al. [5] reported a study on energy efficiency analysis of air cycle heat pump dryers. Two types of cloth dryers were compared the first one is conventional tumbler dryer using electric heater and the second one is using reversed Brayton cycle. The results showed dryer with heat pump cycle offers up to 40% improvement in energy efficiency over the electric heater dryer. Ameen and Bari [6] investigated the feasibility of drying clothes using waste heat from a condenser of a typical split-type RAC used in high rise urban apartments. A drying cabinet made of wood was designed and a box cover of condenser was made. In order to drawn the hot air from the box cover of the condenser an auxiliary fan was installed. Three methods drying clothes were compared, they are drying with commercial dryer using 1 kW electric heater, natural drying of the clothes indoors, and drying clothes using condenser heat (heat pump dryer). The initial weights of the clothes dried were 1792–1888 g. The results showed that the drying rate for commercial dryer, natural drying, and heat pump dryer was 0.319 kg/h, 0.139 kg/h, and 0.424 kg/h, respectively. The drying time varied from 120 min to 390 min. In order to compare the performance of the dryer, specific energy consumption (SEC) rate in kW h/kg and specific moisture extraction rate (SMER) in kg/kW h were proposed. Here the mass of the clothes dried were not varied and the characteristics of the drying cabinet were not discussed. Deng and Han [7] performed experimental study on clothes dryer using rejected heat from splittype RAC. A laboratory experimental rig has been purposely set up. The RAC with specification of 6.4 kW of cooling capacity a typical RAC size applicable to a room of up to 30 m2 in Hong Kong was used. A drying rack made of 8 moveable hanging bars with a dimension of 760 mm 450 mm base and 460 mm height was inserted in a 2.5 m long air duct made of polymethyl methacrylate. This rack can be viewed as a drying cabinet with a volume of 0.157 m3 . In the experiments, no auxiliary fan was used. The initial weight of clothes dried was about 3 kg. Two methods of drying were compared, electricity clothes dryer and the method proposed. The electricity consumption and drying time were compared. Temperatures of condenser and in the drying cabinet, and change of weight were plotted. The results showed that the additional electric use of RAC was only 1.2%. A further study on a new termination control method for clothes drying process in their previous clothes dryer has also been reported [8]. In these two studies, the drying chamber is not practical. It is a drying rack inside a 2.5 m long of wind tunnel.
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کلمات کلیدی:
Design A Feasible Cloth Drier Utilizing Domestic Waste-Heat For ... eprints.utem.edu.my/3550/ by M Muhamad Fathil - 2008 May 28, 2015 - Design A Feasible Cloth Drier Utilizing Domestic Waste-Heat For ... heat emitted from a split-type residential air conditioner (RAC) for clothes drying in ... In this work a new cabinet for the clothes dryer had been designed and ... [PDF]An Experimental Study on Clothes Drying Using Waste Heat from Split ... waset.org/.../an-experimental-study-on-clothes-drying-using-waste-heat-from-split-ty... by P Suntivarakorn - Cited by 6 - Related articles Abstract—This paper was to study the clothes dryer using waste heat from a split type air conditioner with a capacity of 12,648 btu/h. The drying chamber had a ... small cabinet for hanging clothes - Scenic Drives scenicdrives.info/cabinet-clothes/small-cabinet-for-hanging-clothes.php The Asko Drying Display case that waste heat from split-type RAC can be used ... to using waste heat from a of not cleaning up clothes the clothes from a heating ... [PDF]clothes drying from room air conditioning waste heat - UMEXPERT https://umexpert.um.edu.my/file/publication/00005361_57212.pdf by TMI Mahlia - 2010 - Cited by 7 - Related articles This paper discusses an experimental study for using heat wasted from a split-type room air conditioner for clothes drying. The study compares the effectiveness ... nice cabinet for clothes - fl online https://flonline.info/cabinet-clothes/nice-cabinet-for-clothes.php Rating: 4.7 - 17 votes Nov 11, 2016 - The performances of the clothes dryer using waste sets for clothes, you can ... hot drying air to tumbler dryer instead heat from a split-type RAC. The heat pump dryer may be the answer to the energy crisis in our ... https://www.treehugger.com › Design › Sustainable Product Design Mar 6, 2014 - Clothes dryers are huge energy hogs; basically they use electricity to ... A Bosch design even uses the waste water to wash the lint filter so you don't have to. .... One goes outside and the other goes under the cabinet to a baseboard vent. .... was using a heat pump mini-split to heat and calculated a 60-70% ...
