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Relevant bibliographies by topics / HEAT RECOVERY WHEEL

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Journal articles

Academic literature on the topic 'HEAT RECOVERY WHEEL'

Author: Grafiati

Published: 26 October 2023

Last updated: 18 June 2025

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Journal articles on the topic "HEAT RECOVERY WHEEL"

1

Simonson, C. J., and R. W. Besant. "Heat and Moisture Transfer in Energy Wheels During Sorption, Condensation, and Frosting Conditions." Journal of Heat Transfer 120, no. 3 (1998): 699–708. http://dx.doi.org/10.1115/1.2824339.

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A numerical model for coupled heat and moisture transfer with sorption, condensation, and frosting in rotary energy exchangers is presented and validated with experimental data. The model is used to study condensation and frosting in energy wheels. Condensation/frosting increases with humidity and at some humidity level, water/frost will continually accumulate in the wheel. The sensitivity of condensation and frosting to wheel speed and desiccant type are studied. The energy wheel performance is also presented during both sorption and saturation conditions for a desicant coating with a Type I sorption isotherm (e.g., molecular sieve) and a linear sorption isotherm (e.g., silica gel). Simulation results show that the desiccant with a linear sorption curve is favorable for energy recovery because it has better performance characteristics and smaller amounts of condensation/frosting for extreme operating conditions.

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2

Tian, Xiaochao, Zhicong Wang, Sida Zhang, et al. "Simulation Analysis and Experimental Study of Piezoelectric Power Generation Device Based on Shape Memory Alloy Drive." Scanning 2022 (January 10, 2022): 1–7. http://dx.doi.org/10.1155/2022/1236270.

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In order to solve the problem of waste heat collection from energy consumption, a thermal energy generation device combining shape memory alloy and piezoelectric materials has been designed. The shape memory alloy is heated and deformed to drive the drive wheel continuously, and the impact wheel is deformed against the piezoelectric cantilever beam during the rotation of the drive wheel to generate electricity. In this paper, the impact force generated by the impact wheel and the output voltage of the piezoelectric cantilever beam during the rotation process are given. Finally, the experimental test shows that the larger the radius of the drive wheel, the lower the impact force of the wheel and the lower the output voltage of the piezoelectric cantilever beam; the larger the diameter of the shape memory alloy wire, the higher the impact force of the wheel and the higher the output voltage of the piezoelectric cantilever beam; the more teeth of the drive wheel, the higher the impact frequency of the piezoelectric cantilever beam and the higher the output voltage. The maximum output voltage of the thermoelectric converter is 14.2 V, when the drive wheel radius is 13 mm, the shape memory alloy wire diameter is 1 mm and the number of impact wheel teeth is 6. The new structural design provides a new structural model for waste heat recovery and thermal energy generation technology. The new structural design provides a new approach and idea for waste heat recovery and thermal energy generation technology.

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3

., Manu Prakash. "QUALITY IMPROVEMENT OF INDOOR AIR BY USING HEAT RECOVERY WHEEL." International Journal of Research in Engineering and Technology 01, no. 04 (2012): 526–31. http://dx.doi.org/10.15623/ijret.2012.0104002.

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4

Wallin, Jörgen, and Joachim Claesson. "Improving heat recovery using retrofitted heat pump in air handling unit with energy wheel." Applied Thermal Engineering 62, no. 2 (2014): 823–29. http://dx.doi.org/10.1016/j.applthermaleng.2013.09.059.

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5

Men, Yiyu, Xiaohua Liu, Tao Zhang, Xi Xu, and Yi Jiang. "Novel flue gas waste heat recovery system equipped with enthalpy wheel." Energy Conversion and Management 196 (September 2019): 649–63. http://dx.doi.org/10.1016/j.enconman.2019.06.026.

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6

Han, Xing, and Xu Zhang. "Hybrid Desiccant Cooling System Using Condensing Heat as the Regeneration Source. Part I: System Model." Advanced Materials Research 383-390 (November 2011): 6422–26. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6422.

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In this paper, a scheme of hybrid desiccant dehumidification system was proposed. This system can recovery the condensing heat from the vapor compression refrigeration unit to remove moisture from the air. But the trick of energy saving is the sensible heat exchanger after the desiccant rotary wheel. After analysis of its energy consumption characteristic, the system model was established.

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7

Kassai, Miklos. "Experimental investigation of carbon dioxide cross-contamination in sorption energy recovery wheel in ventilation system." Building Services Engineering Research and Technology 39, no. 4 (2017): 463–74. http://dx.doi.org/10.1177/0143624417744733.

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The aim of this research was to investigate the scale of carbon dioxide recirculation in rotary energy wheel operated in air handling units. To achieve this objective, a test facility was installed into the indoor air quality and thermal comfort laboratory of BUTE University. A newly developed molecular 3 Å sieve sorption wheel with high humidity transfer efficiencies is integrated into the experimental setup. In this research study, carbon dioxide cross-contamination rate from the exhaust side into the supply side in sorption regenerative air-to-air rotary energy exchanger was conducted by experimental tests. During the study, the correlation between the carbon dioxide cross-contamination, different rotational speeds of the wheel and different volume flow rates of supply air were also investigated in detail. Based on the results, a rotation speed diagram – carbon dioxide cross-contamination diagram – is plotted which can be very useful for researchers, developers and building service engineers in practice. Practical application: The most perfect energy exchanger can transfer both heat and moisture, thus providing a pleasant indoor air quality in the conditioned space. It is beneficial if the exchanger can transfer heat and moisture between the supply and exhaust airstreams, thereby minimizing the capacity and energy consumption of the required auxiliary heater and humidifier. The auxiliary energy reduction can be especially high if the sorption material of the energy wheel is of type 3 Å molecular sieve that has an extremely high humidity transfer capacity. The disadvantage of the rotary energy recovery is the cross-contamination from the exhaust air to the supply air. This is very important because in places such as offices, schools, public institutions, carbon dioxide cross-contamination can cause degradation of indoor air quality.

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8

Han, Xing, and Xu Zhang. "Hybrid Desiccant Cooling System Using Condensing Heat as the Regeneration Source. Part II: Energy Saving Potential." Advanced Materials Research 383-390 (November 2011): 6431–35. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6431.

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Based on the system model of hybrid desiccant cooling system using condensing heat as the regeneration source, the solution is given to investigate the system characteristic. The result showed that, when the outdoor air humidity ratio is below 18.5g/kg and indoor dehumidification load is below 1.5kg/h, the energy consumption of this system is lower than the enthalpy recovery air-conditioning system. If not, due to the high energy consumption of electrical heating, the desiccant wheel using condensing heat and electrical heat is not suitable for the humid areas.

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9

Min, Yunran, Yi Chen, Wenchao Shi, and Hongxing Yang. "Applicability of indirect evaporative cooler for energy recovery in hot and humid areas: Comparison with heat recovery wheel." Applied Energy 287 (April 2021): 116607. http://dx.doi.org/10.1016/j.apenergy.2021.116607.

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10

Kassai, Miklos. "Energy Performance Investigation of a Direct Expansion Ventilation Cooling System with a Heat Wheel." Energies 12, no. 22 (2019): 4267. http://dx.doi.org/10.3390/en12224267.

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Climate change is continuously bringing hotter summers and because of this fact, the use of air-conditioning systems is also extending in European countries. To reduce the energy demand and consumption of these systems, it is particularly significant to identify further technical solutions for direct cooling. In this research work, a field study is carried out on the cooling energy performance of an existing, operating ventilation system placed on the flat roof of a shopping center, located in the city of Eger in Hungary. The running system supplies cooled air to the back office and storage area of a shop and includes an air-to-air rotary heat wheel, a mixing box element, and a direct expansion cooling coil connected to a variable refrigerant volume outdoor unit. The objective of the study was to investigate the thermal behavior of each component separately, in order to make clear scientific conclusions from the point of view of energy consumption. Moreover, the carbon dioxide cross-contamination in the heat wheel was also analyzed, which is the major drawback of this type heat recovery unit. To achieve this, an electricity energy meter was installed in the outdoor unit and temperature, humidity, air velocity, and carbon dioxide sensors were placed in the inlet and outlet section of each element that has an effect on the cooling process. To provide continuous data recording and remote monitoring of air handling parameters and energy consumption of the system, a network monitor interface was developed by building management system-based software. The energy impact of the heat wheel resulted in a 624 kWh energy saving and 25.1% energy saving rate for the electric energy consumption of the outdoor unit during the whole cooling period, compared to the system without heat wheel operation. The scale of CO2 cross-contamination in the heat wheel was evaluated as an average value of 16.4%, considering the whole cooling season.

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