Experimental Study on the Characteristics of Sewage Sludge Pyrolysis Under The Low Temperature Conditions

2008 ◽  
Vol 25 (8) ◽  
pp. 1203-1212 ◽  
Author(s):  
YunBo Zhai ◽  
Qiang Liu ◽  
GuangMing Zeng ◽  
CaiTing Li ◽  
Fang Yang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Sewage Sludge ◽  
Low Temperature ◽  
Temperature Conditions

scholarly journals Experimental Study of Three-Bed Adsorption Chiller with Desalination Function

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5827
Author(s):  
Karol Sztekler ◽  
Wojciech Kalawa ◽  
Wojciech Nowak ◽  
Lukasz Mika ◽  
Slawomir Gradziel ◽  
...  
Keyword(s):  
Experimental Study ◽  
Energy Efficiency ◽  
Low Temperature ◽  
Water Temperature ◽  
Waste Heat ◽  
Cooling Power ◽  
Adsorption Chiller ◽  
Desalinated Water ◽  
Temperature Conditions ◽  
Heating Water

Energy efficiency is one of the most important topics nowadays. It is strictly related to energy demand, energy policy, environmental pollution, and economic issues. Energy efficiency can be increased and operating costs reduced by using waste heat from other processes. One of the possibilities is to use sorption chillers to produce chilled water and desalinated water. Low-temperature waste heat is not easy to utilize because of the low energy potential. Using adsorption chillers in low-temperature conditions allows utilizing waste heat and producing useful products in many regions of the world. The paper presents the results of an experimental study carried out on a three-bed adsorption chiller with desalination function, using silica gel and water as a working pair. The laboratory test stand included one evaporator, one condenser, and three separate tanks for water, desalinated water, and brine, respectively. The test stands scheme and description were presented. All results were obtained during several test hours with stable temperature conditions in the range of 57–85 °C for the heating water. It is found that the Coefficient of Performance (COP) increased from 0.20 to 0.58 when the heating water temperature increased from 57 to 85 °C. A similar finding is reported for Specific Cooling Power (SCP), which increased from 27 to 160 W/kg as the heating water temperature increased from 57 to 85 °C. It can be concluded that the heating water temperature strongly impacts the performance of the adsorption chiller.

Experimental Study of Tetrahydrofuran Oxidation and Ignition in Low-Temperature Conditions

2015 ◽  
Vol 29 (9) ◽  
pp. 6118-6125 ◽  
Author(s):  
Guillaume Vanhove ◽  
Yi Yu ◽  
Mohamed A. Boumehdi ◽  
Ophélie Frottier ◽  
Olivier Herbinet ◽  
...  
Keyword(s):  
Experimental Study ◽  
Low Temperature ◽  
Temperature Conditions

Experimental Study of a Solar Assisted Air Source Heat Pump in Heating Condition

2011 ◽  
Vol 243-249 ◽  
pp. 4909-4912
Author(s):  
Yin Liu ◽  
Guang Hui Zhou ◽  
Jing Ma
Keyword(s):  
Experimental Study ◽  
Low Temperature ◽  
Heat Pump ◽  
Outdoor Environment ◽  
Heating Condition ◽  
Heating Performance ◽  
Temperature Conditions ◽  
Air Source Heat Pump ◽  
Heating Capacity ◽  
Environment Temperature

In order to improve the performance of air source heat pump in low temperature conditions, designed a solar assisted air source heat pump with the gas-liquid bio-sources heat exchanger. The heat pump can work with solar heat water and air as a heat source at same time. The heating performance of the heat pump in low temperature conditions was tested. The results show that, in comparison to the single air source heat pump, the heating performance of the solar assisted air source heat pump is improved remarkably. When the solar water flow is at 0.6m3/h and the outdoor environment temperature is -7°C, the heating capacity raised about 38% and the COP raised about 30%. When the outdoor environment temperature is -15°C, the heating capacity and the COP all raised more than 50%.

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