Water Source Heat Pump Technology In The Application Of Gold?
Water Source Heat Pump In the Gold Mine:
Abstract: China's rich mineral resources, mining enterprises more. Underground mining very large displacement (4000m3 / d), contains a wealth of low-grade energy, in the past does not make use of the white emission. If the application of water Heat Pump Program can make full use of its energy, tapping the potential for the mine Energy Transformation of a new path.
An overview: Country rich in mineral resources, mining enterprises more. In the mine production process, in order to smoothly carry out mining operations, is inevitable to carry out a number of security measures, including exclusion and isolation of groundwater is one of the measures to be taken, always a lot of valuable ground water discharge to be in vain.
To take full advantage of the valuable groundwater resources and to create a good enterprise employees in production and living environment, leading Jiaojia gold mine for the full use of large amount of water is not the situation, a reasonable idea of development and utilization of mine water. So using this tapping the potential transformation of the old Lee Lee spent so measures can save a lot of money to bring considerable economic benefits to the enterprise.
Jiaojia Gold Mine is a daily displacement of up to 4000m3, and year-round water temperature constant at 21-22 , are rich in low-grade heat source. In the past did not use them but in vain emissions. If the use of existing water source heat pump technology to make full use of its energy, tapping the potential energy saving for the mine to break a new path.
2, water source heat pump technology Description:
Water source heat pump technology is the use of the Earth's surface shallow water of low temperature heat, using heat pump principle, by a small amount of high energy input, low heat to achieve high heat transfer to a technique. It has high efficiency, energy saving, economic, Environmental protection Running stable and reliable, but also to achieve a multifunctional (heating, cooling, hot water) and wide application in the use of the process can be automated, easy to manage.
Water source heat pump technology is now becoming more promotion, it has high efficiency, energy saving, economic, environmental, and safety. It features the following:
(1) use 1KW of energy for 60 to 100 square meters of area heating and cooling.
(2) the ratio of energy input and output: the state of about 1:4.2 heating, cooling state is about 1:5.8.
(3) the initial investment is lithium bromide central air conditioning units and other 2 / 3 4 / 5.
(4) use of the process does not release any harmful gases to the environment, not destroy water.
(5) does not exist any explosive, incendiary potential safety problems, easy to use, simple, reliable, and applicable to a wide range, both for small and medium regional heating and cooling can also be used in the construction group heating unit combination , refrigeration. Nevertheless
source heat pump technology is superior, but also by environmental conditions, the water conditions. The displacement of the underground mine, a very large (4000m3 / d), contains a wealth of low-grade energy, in the past does not make use of the white emission. Water source heat pump if the application program can make full use of its energy, tapping the potential energy saving for the mine to break a new path.
Third, the program process to determine:
(A) of the known conditions: 1, a need for air conditioning refinery plant area of about 2000 square meters, interior design temperature for 26 ~ 28 . The new chassis has air conditioning, fresh air: 40000m3 / h, the new air box required cooling capacity 309KW.
2, underground water: 3000 ~ 4000m3 / d, may be a conservative estimate: 3000m3 / d, shall be 125m3 / h.
3, well water temperature: 21 ~ 22 . Water Quality Report are as follows: CL-= 5901.18mg / L, Ca2 + = 1515mg / L, Mg2 + = 85.08mg / L, Fe3 + = 1.12mg / L, PH = 7.1, total salinity = 11694.5mg / L, SS = 35.60 mg / L.
4, underground storage of water treatment stations: storage tank 400m3 / a, 2; sedimentation tank 50m3 / a, 2.
(B) the process to determine program
Specific circumstances at the scene and decided to use the following programs: from the mine water pump from the reservoir in the pump (20 ), transported to desander by Grit and then into the intermediate heat exchanger (titanium plate) heat exchanger After the election of the plant (26 ) re-use. Intermediate circulating water (23 ) into the heat pump unit, in its heated (30 ) back to re-heat exchanger temperature (23 ), and then into the heat pump, and so forth. Heat pump air conditioning side of the import and export of temperature 12 / 7 .
Summer cooling, according to the specific circumstances of the refinery to mine water as cold source, the heat transferred to the mine water. Only a small amount of electricity consumed, compared with ordinary air-conditioning energy savings up to 40%. The device is just the heat that already exists for the transfer, which is economical, and environmentally friendly.
(C) of the main process equipment selection:
Use DZ-LC-160 type 2 sets, a single cooling capacity 167.5kw, input power of 45kw. Air circulating pump with KQSG100-50-30 two (a one stand), Q = 50m3 / h, H = 30mH2O, N = 7.5kw; desander by DZS-350/80 one; SHN-4 type Electronic Descaling apparatus two; use of water systems supply water at constant pressure; DN150 a rapid decontamination devices; mine using the original water pump; intermediate heat exchanger with a plate heat exchanger, circulating pump intermediate KSGP100-40-18 two (one with a preparation), H = 18m, N = 4KW, Q = 40m3 / h.
(D) of the program analysis 1, Economic Analysis: Heat pump cooling, the total input power of 80KW. If the electricity price by 0.6 yuan / kWh basis, the air time of 110 days, 12 hours a day by calculating, the annual air conditioning costs: 0.7 0.6 80 110 12 0.8 = 3.55 . Body heat pump investment: 320 thousand yuan.
2, environmental analysis: Renewable water resources are Energy Using the water? Water heat pump technology not only to avoid pollution, but also to mine drainage in the valuable energy resources are fully utilized.
3, other Heat pump can achieve a high level of automation, almost no one can reach the safe operation of the state, and the maintenance and repair workload of the very small.
4, conclusion: The above analysis shows, the program's total investment is low and operating costs and saves. And a single heat pump systems, management and maintenance than the hybrid system is easy.
4, the construction process to take useful measures:
1, poor quality mine water for the mine, using the plate heat exchanger system can guarantee the security of the entire process, long-term, economic operation.
2, the system main equipment is the heat pump. The device is equipped with a dedicated control cabinet. Control cabinet for heat pump units are equipped with a variety of start-up and protection features, including automatically enter the water temperature
Water Source Heat Pump Technology In The Application Of Gold?
By: viedy
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