Fujian Province Key Laboratory of Energy Cleaning Utilization and Development

Xiamen, China

Fujian Province Key Laboratory of Energy Cleaning Utilization and Development

Xiamen, China

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Ma Y.,Jimei University | Ma Y.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Wu J.,Jimei University | Wu J.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development
Huagong Xuebao/CIESC Journal | Year: 2016

To utilize the renewable energy source from landfill gas(LFG)and reduce the consumption of fossil fuels, an LFG fueled biogas engine driven air source heat pump heating system was presented and its heating performance was studied.The type of the LFG collecting system and the LFG purifying process suitable for this system were determined.The experimental platform established can experimentally test two operating modes respectively, i.e., the waste heat recovery from biogas engine exhaust fume alone or from both cylinder liner cooling water and exhaust fume simultaneously, by shifting the switching valves.The heating performance of the system was tested, and factors such as biogas engine speed, condenser water flow rate and condenser inlet water temperature, which have effect on the heating performance, were analyzed.Results of the experiment indicated that the total heating output of the system increased with biogas engine speed and condenser water flow rate, but it decreased with condenser water inlet temperature rise.Although the coefficient of performance(COP)and the primary energy ratio(PER)of the system reduced with condenser water inlet temperature rise as well, but their relationship with condenser water flow rate was not monotonic one.The study also revealed that the heating performance of the system was in its maximum when the condenser water flow rate ran at 1.45-1.65 kg·s-1, and the COP and PER of the system reached their maximum of 4.3 and 1.48 respectively when the condenser water inlet temperature was 35-45℃. © All Right Reserved.


Yang S.,Jimei University | Yang S.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | He H.,Jimei University | He H.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | And 5 more authors.
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2016

The array-raft wave energy power generation system which combines floater wave energy convert technique with raft wave energy convert technique is put forward. The system can collect multipoint wave energy and output electricity energy by taking advantage of the relative shift between multi buoys and floating platform. The structure and working principle of the system is described. The theoretical calculation shows that the best efficiency of single floater is 31.7% after the force and energy convert efficiency were analyzed. A real ocean experiment is conducted and the test data show that the system will get more electricity energy if the buoys are more, on the other hand, the energy efficiency will drop. The ocean experiment proves that the array-raft wave energy power generation system's principle is correct, which provides a new method to develop ocean wave energy. © 2016 Journal of Mechanical Engineering.


Yang S.,Jimei University | Yang S.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | He H.,Jimei University | He H.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2014

The new multipoint direct-drive wave power generation system's construction and energy conversion process have been introduced in detail and fuzzy neuron PID controller was applied into the system for keeping the system voltage stability and constant rotate speed. The computer simulation model was established and the laboratory test platform was set up for analyzing the system's running under regular and irregular wave input conditions. The simulation analysis and experiment results showed that fuzzy neuron PID controller can restrain effectively wave input fluctuations, adjust steplessly the permanent magnet generator's rotor speed and has excellent control performance.


Cao W.,Jimei University | Cao W.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Mujtaba I.M.,University of Bradford
Industrial and Engineering Chemistry Research | Year: 2015

This paper presents a simulation study of vacuum membrane distillation (VMD) for desalination. A simulation model was built on the Aspen Plus platform as a user de fined unit operation for the VMD module. A simplified mathematical model was verified, and the analysis of process performance based on simulation was also carried out. Temperature and concentration polarization effects are significant in the conditions of higher feed temperature and/or vacuum pressure. The sign of (PI,f - PI,p), difference of the vapor pressures between the membranes at the interfaces, is an indicator of the vacuum pressure threshold. Increasing the vacuum pressure at lower feed temperature is an effective way to increase the permeate flux and reduce the energy consumption simultaneously. © 2014 American Chemical Society.


Huanghuang Z.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Hongzhou H.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Longfei Z.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Zhiwei L.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development
Energy Procedia | Year: 2014

The combustion characteristics of ultrafine pulverized Fujian anthracite were studied by comparison of ultrafine and conventional pulverized Fujian anthracite. The results show that ultrafine pulverized action has more positive significance to Fujian anthracite which has difficulties in ignition, stabilization and burnout. For Fujian Tianhushan anthracite, as the average coal particle size decreases from 38.002 μm to 14.877 μm, the coal's ignition temperature, burnout temperature and activation energy reduced from 620.19°C, 763.40 °C and 185.21 kJ/mol to 616.10°C 739.34 °C and 169.25 kJ/mol, respectively, while its comprehensive combustion characteristic index increases from 3.696×10;-5; to 4.087×10;-5;. © 2014 The Authors. Published by Elsevier Ltd.


Cao W.,Jimei University | Cao W.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Huang X.,Jimei University | Mujtaba I.M.,University of Bradford | Lu X.,Shanghai JiaoTong University
Huagong Xuebao/CIESC Journal | Year: 2015

Pretreatment and liquefaction of natural gas are two key links of offshore LNG-FPSO. The pressure swing adsorption(PSA) as natural gas purification and CO2 pre-cooling air expander cycle as natural gas liquefaction are selected and simulated and analyzed. The results show that, the energy consumption of the double layers adsorbents PSA is low, and the disadvantage of liquid absorbent with the wave shaking can be avoided by the process operation of the gas; and there is no liquid produced in the precooling and refrigeration processes of the CO2 pre-cooling air expander cycle, indicating its high safety; the above purification and liquefaction processes are suitable for offshore LNG platforms. © All Right Reserved.


Wu J.,Jimei University | Wu J.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Ma Y.,Jimei University | Ma Y.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development
Huagong Xuebao/CIESC Journal | Year: 2014

The system equipment configuration of a landfill gas (LFG) fueled biogas engine driven heat pump energy-saving system was studied, and the LFG collecting and purifying flow process was analyzed. By constructing an experimental plant, the performance of the system was tested. The results of experiments indicated that when the biogas engine operated at 70%-90% of its rated speed, the energy efficiency of the system would reach its maximum. That is because the waste heat recovery rate of exhaust fume was relatively higher, although the heat supplied by the system was not the maximum. Compared with other heating systems, biogas engine driven heat pump system can significantly reduce the consumption of fossil fuels and improve heating capability. Therefore, the heating system developed can lower energy consumption and utilize renewable energy sources comprehensively. ©, 2014, Chemical Industry Press. All right reserved.


Wu J.,Jimei University | Wu J.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Ma Y.,Jimei University | Ma Y.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development
Huagong Xuebao/CIESC Journal | Year: 2014

A biogas engine driven heat pump system for comprehensive utilization and conservation of energy is presented. An experimental platform was constructed and the system performance was tested. Based on theoretical analysis and experimental data, the relationship between load rate of biogas engine and biogas consumption, waste heat recovery, system coefficient of performance (COP) and primary energy ratio (PER) was studied. Results indicate that the partial load performance of this system is good, with the maximum COP of 4.18 and the maximum PER of 1.4 for recovering the waste heat of biogas engine exhaust fume only. Therefore, the biogas engine driven air source heat pump system can significantly improve heating capacity and lower energy consumption so as to achieve comprehensive and effective utilization of biogas energy. ©All Rights Reserved.


He H.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | He H.,Jimei University | Li H.,Fujian Province Key Laboratory of Energy Cleaning Utilization and Development | Li H.,Jimei University
Energy Procedia | Year: 2014

Sea conditions have a significant impact on the efficiency of wave energy converters (WECs). Based on the buoypendulum WEC presented in the paper, the energy-collection principle of the pendulum system is described, and the motion response of the pendulums under three wave conditions is simulated. It is shown that the optimal wave direction for pendulum system's operation is 45°C; the pendulum is apt to reach balance when wave height is less than 0.6m. In addition, a method to estimate the average conversion efficiency of the pendulum system is proposed based on the fitting function software, and the efficiencies under five ideal wave conditions are calculated. The results show that the greater the wave period and the wave height, the lower the collection efficiency of the pendulum. © 2014 The Authors. Published by Elsevier Ltd.

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