Hybrid liquid desiccant cooling systems by friedrich sick under the supervision of professors john a. At present, the system performance data is available for more than oneyear period. Solar desiccant cooling system for hot and humid region. Nalandainstituteoftechnology technical seminar presentation20 presented by. In this system, liquid desiccant cooling system along with an indirect evaporative cooler was used to subcool the refrigerant of the liquid desiccant cooling cycle. The main components of a solar assisted desiccant cooling system are shown in the figure on the right. Adam data acquisition has been used to do monitoring and recording temperature, humidity, air flow rate in each stage of air process and also radiation.
The economic benefit of the desiccant system is positive. Dec of a desiccant cooling system depends strongly on the conditions of ambient air and supply air. Ghali department of mechanical engineering, american university of beirut, p. In this paper, a scheme of hybrid desiccant dehumidification system was proposed. Hybrid desiccant cooling system air conditioning hvac. Pdf performance research of solar hybrid desiccant cooling systems. Energy independence and security act of 2007 created 2008 through 2012 funding for a new solar air conditioning research and development program. Desiccant cooling system is one of the options in our. Performance analysis of hybrid liquid desiccant solar. Now days, air conditioning systems are a must for almost every commercial and residential building to achieve comfortable indoor conditions. A twowheel desiccant system using solar heat for desiccant. The two wheel system uses a desiccant wheel that is matched with a. Choosing a backup generator plus 3 legal house connection options transfer switch and more duration.
This hybrid cooling system includes three sections. The schematic of solar hybrid desiccant cooling system experimental test of solar desiccant cooling system was done during three hours at 12,40 pm to 15,40 pm in 4th september 2012. Systems that combine a desiccant dehumidification cycle with a second cycle that produces sensible cooling are discussed. Performance research of solar hybrid desiccant cooling systems. The test room has a length 3 m, width of 2 m, and height of 3 m. Cooling loads must be dramatically reduced when designing net zero energy buildings or other. Hybrid solar desiccant cooling system linkedin slideshare.
Materials utilized for construction of various components of system with specifications and properties are shown in table 1. In addition, one system used waste heat and one system used solar thermal energy for desiccant regeneration. Klein in conventional air conditioning systems, the air is dehumidified by low temperature condensing of the water vapor which is a thermodynamically nonoptimal process. Experimental investigation of solar hybrid desiccant. Pdf performance research of solar hybrid desiccant. Pdf simulation of hybrid desiccant cooling system with. This work assesses the energy savings possible from developing hybrid desiccantvapor compression air conditioning systems and makes recommendations for. A hybrid air conditioner driven by a hybrid solar collector by ali alalili our full name as it appears in university records. The required degree of sensible cooling being achieved through the use of an evaporative cooler. Desiccant cooling system powered by vacuumtube solar collectors is an interesting option for cooling application. Alternative design of hybrid desiccant cooling systems. Solar desiccant cooling cycle in combined mode with vapor compression refrigeration cycle in hot and humid weather of bushehr city was simulated.
The desiccant cooling system consist of three main. In this study, a solarassisted hybrid sdcs system was developed in which solarheated water is used as an additional heat source for the. The thermodynamic and possible economic advantages over simple cycles are outlined, and the literature that. Experimental investigation of solar hybrid desiccant cooling. Seminar report on hybrid solar desiccant cooling system. Hybrid desiccant cooling system free download as powerpoint presentation. A hybrid solar desiccant cooling system sciencedirect. However, there are some technical challenges of developing an efficient heat pump that runs. A two wheel desiccant system using solar heat for desiccant regeneration is typically discussed. Background global environmental concerns, improving standards of ventilation and increasing concerns about indoor air quality have all contributed to a change in design thinking. Hybrid solar desiccant cooling system, seminar reports. Case study analyzed ac consists of an ahu equipped with a hybrid desiccant cooling that integrates desiccant, evaporative and conventional cooling technologies. Abhinav anand 1001297081 hybrid solar desiccant cooling system by abhinav anand regd. Dezfouli institute of product design and manufacturing iprom, universi ti kuala lumpur, 56100 kuala lumpur, federal territory of kuala lumpur, malaysia abstract the main issue of desiccant cooling system is less cop in compared with conventional cooling system.
Yearround dynamic system simulations were conducted using trnsys to take into account the seasonal effect. Explore hybrid solar desiccant cooling system with free download of seminar report and ppt in pdf and doc format. Effective parameters on the performance of solar desiccant cooling systems m. Three types of system designs were considered, namely the solar cooling system with energy recovery, the solar hybrid desiccant cooling system and the proposed solar absorption cooling system. Warm and humid air enters the slowly rotating desiccant wheel and is dehumidified by adsorption of water 12.
For collection of desorbed water from upper basin and the distilled yield from lower basin. The solar hybrid desiccant cooling system was established near the test room located in solar technology park, ukm malaysia. Efficiency of a liquid desiccant dehumidification system regenerated by using solar collectors regenerators with photovoltaic fans. Moreover, desiccant systems often work with 100% of fresh air, thus.
Efficiency of a liquid desiccant dehumidification system. In solar desiccant cooling cycle, solar energy is used to regenerate a desiccant that dehumidifies the moist air, the resulting dry air is cooled in heat recovery wheel and then in an evaporative cooler. Solar air conditioning refers to any air conditioning cooling system that uses solar power this can be done through passive solar, solar thermal energy conversion and photovoltaic conversion sunlight to electricity. Part of this research program investigated combinations of dehumidification and evaporative cooling in solar driven hybrid desiccant cooling systems. Design of liquid desiccant dehumidification and cooling. Desiccant cooling technology consists in dehumidifying the intake air stream by passing it from beginning to end a desiccant material and then drying the air to the desired indoor temperature. Also explore the seminar topics paper on hybrid solar desiccant cooling system with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile. Pdf solar air conditioning system using desiccant wheel technology.
Using excess summer heat from solar collectors to drive desiccant cooling systems is often proposed. The transient simulation of the solar desiccant system is performed for the entire cooling season. The system regenerated by electricity and solar energy was conventional and solar hybrid systems respectively. In the open cycle adsorption system, the basic operating principle of dehumidifier are explained and compared. Hybrid desiccant cooling system is used desiccant wheel for dehumidification and then further cool in indirect evaporative cooler, the solar energy is used for desiccant regeneration.
Hybrid solar desiccant cooling system seminar report, ppt, pdf. Parametric studies of a hybrid desiccant cooling system. Different studies involving both solar assisted desiccant cooling system and conventional cooling system indicated enhanced performance, thereby suggesting feasibility of hybrid systems for a wide. Different studies involving both solarassisted desiccant cooling system and conventional cooling system indicated enhanced performance, thereby suggesting feasibility of. Received 25 november 2010 received in revised form 6 april 2011. For collection of desorbed water from upper basin and the distilled yield from. Performance enhancement of hybrid solid desiccant cooling. Liquid dessicant solar airconditioner system overview. This system can recovery the condensing heat from the vapor compression refrigeration unit to remove moisture from the air. Box 110236, beirut 1107 2020, lebanon article info article history. The main purpose of introducing the cycle was to reduce energy consumption, especially fossil fuel. Performance of solarassisted hybrid airconditioning. Hybrid desiccant cooling system using condensing heat as.
Index terms solar energy, desiccant cooling, evaporative cooling, wet bulb. The adsorption desiccant system obtains the moisture power, and the compression type refrigeration can obtain sensible heat load. Optimized solarpowered liquid desiccant system to supply building fresh water and cooling needs n. In this system latent load is removed by the silicagel solid desiccant wheel, and sensible heat load is removed by heat recovery wheel and cooling coil of vac. This thesis investigates the coefficient of performance cop of a hybrid liquid desiccant solar cooling system. Figure 1 shows the experimental setup of system that conducted to the test room by ducts. Performance research of solar hybrid desiccant cooling. Analysis of advanced solar hybrid desiccant cooling systems for. Pdf two types of hybrid systems are investigated here. But the trick of energy saving is the sensible heat exchanger after the desiccant rotary wheel. Background the principles of desiccant cooling further information publications. The 3d view of hybrid solar still is presented in fig. Desiccant cooling systems solair solar air conditioning.
Analysis of advanced solar hybrid desiccant cooling. The desiccant cooling system did not contain a cooling coil. Effective parameters on the performance of solar desiccant. Optimized solarpowered liquid desiccant system to supply. A novel design of a hybrid system of vcs and lds was proposed by she and colleagues. Desiccant cooling systems emerged as promising alternative to traditional vapor compression systems, since it allows for the use of solar energy or low grade waste heat for the reactivation of the desiccant rotor, in addition to the use of water as refrigerant. Performance analysis of hybrid liquid desiccant solar cooling system v abstract this thesis investigates the coefficient of performance cop of a hybrid liquid desiccant solar cooling system. The basic process in providing conditioned air may be described as follows. Moreover, the desiccant solution was regenerated using the condensing heat of the vcs. Sheridan division of energy technology, commonwealth scientific and industrial research organization, highett, victoria, australia 3190 and j. Pdf the electrical energy consumption in malaysia has increased sharply in the past few years. Also explore the seminar topics paper on hybrid solar desiccant cooling system with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019.
Researchers have studied and compared the cop of ventilation and recirculation. Hybrid photovoltaicthermal technology and solar cooling. Feasability of solar desiccant evaporative cooling semantic scholar. In this paper, the monitored performance data on solar. The desiccant based hybrid air conditioning system can control temperature and humidity separately, which consists of adsorption desiccant system and compression type refrigeration system. Energy saving of hybrid desiccant air conditioning system. The increasing energy demand, and increasing oil prices and pollution levels raise the need for alternative. Hybrid solar desiccant cooling system seminar report.
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