A full air cooling and heating system based on mine water source

2018 ◽  
Vol 145 ◽  
pp. 610-617 ◽  
Author(s):  
Xiao-Ping Feng ◽  
Zhemin Jia ◽  
Hao Liang ◽  
Zhenping Wang ◽  
Baoqi Wang ◽  
...  
Keyword(s):  
Mine Water ◽  
Water Source ◽  
Heating System ◽  
Air Cooling

Water Quality Assessment in the Mining and Industrial Region on the Example of Karachunovskyi Reservoir in Ukraine

2019 ◽  
Vol 33 ◽  
pp. 19-31 ◽  
Author(s):  
Liubov V. Hryhorenko
Keyword(s):  
Mine Water ◽  
Water Source ◽  
Water Quality Assessment ◽  
Water Sources ◽  
Quality Characteristic ◽  
Salt Composition ◽  
High Background ◽  
Long Period ◽  
Quality Of Water ◽  
Hygienic Standard

Quality of water from surface water source – Karachunovskyi reservoir for a long period of observation during (1965-1979), (1980-1990), (1991-2001), (2002-2012) years was studied. In water taken from Karachunovskyi reservoir was shown negative trend for increasing salt composition, by the content of general rigidity, dry residue, sulfates, chlorides for a long period of observation: from 1965 to 2012 years, which is caused by the systematic discharge of a highly mineralized mine water from the mining enterprises of Kryvyi Rih into Ingulets and Saksagan rivers, and subsequent pollution of Karachunovskyi reservoir – the main source of centralized drinking water supply 94% of the urban population. Generally, salt composition of the water from Karachunovskyi reservoir in some years of observation belonged to the 4th class of danger, i.e. "limited usable, undesirable quality". Characteristic feature of the Kryvorozhska urbanization zone is the presence of priority heavy metals (Mo, Mg, Cd, Ni, Zn, Fe, Cu, Pb, Cr) in water sources, due to the intensive extraction of iron ore. For example, average iron content in 2010 was (0.342±0.003) mg/dm3, which exceeded MPC (0.3 mg/dm3) on 1.14 times. The average content of manganese exceeded the hygienic standard in 2008 (1.42 MPC), in 2009 (1.3 MPC) and in 2010 (1.54 MPC) years, due to a high background content of this chemical element in the environmental facilities of the industrial city, and the annual discharge of highly mineralized mine water into local water sources.

The Combined Solar with a Dual Heat Source Heat Pump Applied in a Greenhouse Heating System - An Operation Optimization of Water Source Heat Pump

2014 ◽  
Vol 541-542 ◽  
pp. 942-948
Author(s):  
Xian Peng Sun ◽  
Zhi Rong Zou ◽  
Yue Zhang
Keyword(s):  
Heat Source ◽  
Heat Pump ◽  
Water Source ◽  
Heating System ◽  
Hot Water ◽  
Inlet Temperature ◽  
Pump System ◽  
Operation Optimization ◽  
Temperature Heat ◽  
The Impact

Based on the finite-time thermodynamic theory, an operation optimization, of water source heat pump in the combined solar with a dual heat source heat pump which is applied in a greenhouse heating system, is made. According to the ε-NTU method and entropy theory, heat exchange and balance equations are obtained. The function relationship between COP and the indoor temperature Tn, the ambient temperature Ta, low temperature heat source inlet temperature Tie and high temperature heat source inlet temperature Tic is also obtained. By means of programming, the impact of parameters on the COP and the way of regulating this water source heat pump system are presented in this article. The results show that: when a separate water source heat pump is running, by adjusting the hot water temperature and the match status of each indoor heating system, the energy-saving operation can be realized.

scholarly journals Thermodynamic Features and Design of Solar-Air Source Composite Heating System

2020 ◽  
Vol 38 (4) ◽  
pp. 967-975
Author(s):  
Na Ni
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Heat Supply ◽  
Water Source ◽  
Heating System ◽  
Heating And Cooling ◽  
Cooling Devices ◽  
Good Energy ◽  
Saving Effect ◽  
Independent Heat

Facing the huge energy consumption of buildings, it is highly practical to study every aspect of energy-saving technologies for heating and cooling devices. Solar thermal technology and air/water source heat pump are two popular energy-saving technologies, which could be combined into a composite heating system with good energy-saving effect and efficiency. This paper constructs a solar-air source composite heating system, analyzes its thermodynamic features, and builds up the corresponding thermodynamic model. In addition, the authors modeled the daytime and nighttime heat balances, as well as the monthly cumulative heat supply for the constructed system. Finally, a dual-tank composite heating system was designed with independent heat supply/storage. The proposed models and system were proved valid and scientific through experiments.

scholarly journals Measurement and Analysis of A Heating System Based on Underground Water Source Heat Pump in Zhangye City

2017 ◽  
Vol 205 ◽  
pp. 1635-1641 ◽  
Author(s):  
Haili Zhou ◽  
Wenhe Zhou ◽  
Jianyun Wu ◽  
Zhaohui Zhou ◽  
Shiwen Ding
Keyword(s):  
Heat Pump ◽  
Water Source ◽  
Heating System ◽  
Underground Water ◽  
Measurement And Analysis

Research on Composite System of Solar Energy Reclaimed Water Heat Pump and Phase Change Energy Storage

2014 ◽  
Vol 521 ◽  
pp. 56-59
Author(s):  
Hui Xing Li ◽  
Peng Cheng ◽  
Guo Hui Feng ◽  
Ran Zhang
Keyword(s):  
Heat Pump ◽  
Operating Cost ◽  
Reclaimed Water ◽  
Water Source ◽  
Heating System ◽  
Hot Water ◽  
Water Heating ◽  
Pump System ◽  
Heat Pump System ◽  
Important Approach

New energy development and utilization is an important approach to solve the problem of energy shortage,a new type of composite heating system is proposed in this study. It expounds the research ideas, the technical principle and operation plan of the system. Through a comparative analysis of the performance coefficient of composite heating system, reclaimed water source heat pump system and solar hot water heating system, it Comes to the conclusions that the composite heating system can not only reduce the operating cost but also improve the running performance of reclaimed water source heat pump and reduce the heat loss of solar hot water heating system.

Research on one-step quenching and partitioning treatment and its application in hot stamping process

2015 ◽  
Vol 231 (11) ◽  
pp. 1972-1982 ◽  
Author(s):  
Xianhong Han ◽  
Yaoyao Zhong ◽  
Pensen Xin ◽  
Zhenshan Cui ◽  
Jun Chen
Keyword(s):  
Hot Stamping ◽  
Heating System ◽  
Active Role ◽  
Mechanical Tests ◽  
Crash Test ◽  
Boron Steel ◽  
Air Cooling ◽  
Element Analysis ◽  
Quenching And Partitioning ◽  
Stamping Process

Hot stamping process has been regarded as one of the most attractive processes to produce high-strength parts with merits of low-forming load and small springback. However, the elongation of the hot-stamped parts is small, so the ability of crash resistance is limited. Recently, a novel hot stamping process integrated with quenching and partitioning treatment has been presented to improve the elongation of the final parts. In this article, the quenching and partitioning hot stamping process is further studied using the boron steel B1500HS, and the feasibility is verified by a series of quenching and partitioning tests followed by mechanical tests and microstructure observations. Moreover, an experimental tool for quenching and partitioning hot stamping process is first proposed in this article, where both air cooling device and heating system are designed, and a U-channel part is produced. Finally, in order to illustrate the active role of high elongation that the quenching and partitioning hot stamping process archived, numerical simulation of crash test for a B-pillar sample is conducted using finite element analysis software LS-DYNA.

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