When the system starts giving you more problems than seem cost-effective to fix. If the unit is approaching 10 years in age and major components such as the compressor, reversing valve, accumulator or outdoor coil goes bad, it might makes sense to replace instead of fix. When faced with major repairs, we can help you make the right choice. Replacing a compressor is somewhat less expensive than replacing the entire unit, but new units may give you greater efficiency, lower operating costs and a brand new warranty on the whole unit, not just the part to be replaced.

Geothermal power generation’s principle and the general thermoelectricity generation are similar, namely vapor impetus power set electricity generation which produces using the geothermy. The research indicated that about 2 kilometers place drills a hole downward from the surface, the collection gushes out the drill hole vapor to be able to obtain the cost inexpensive and the clean environmental protection electrical energy.

Vladimirsky · Puluohuoluofu geothermy power station higher managements: If you must calculate ton petroleum the price, now is probably 10,000 to 12,000 rubles is approximately equal to 400 to 470 US dollars, the combustion petroleum obtains the steam cost and the geothermy has the steam cost to have no way to compare.

Now, Moot Knoff the Si gram geothermy power station’s power rate already accounted for the Kamchatka Peninsula electric quantity more than 30%. The scientist indicated that this area’s energy potential is also very big.

Yilinna · Luo multi-Mankey geothermy Holding company spokesperson: According to forecast that Moot Knoff a Si gram mountain valley the geothermal energy has 300 megawatt electrical energies, if the future will construct second third, the geothermy power station’s plan can become the reality, then can supply the complete electrical energy which the entire Kamchatka Peninsula will need.

In fact, Moot Knoff a Si gram mountain valley also has a potential not to obtain the development, that is a tourism. The convenience transportation, has the medical effect hot spring, the geyser natural marvelous sight, but also has the blue color, the brown and so on each kind of color soil, is Moot Knoff the Si gram mountain valley development tourism advantage. But the Local government indicated that continues to develop and the effective use geothermy, will transform the energy, will be the present primary mission.

        1 solar energy – heat pump central hot water system composition
        1.1 solar energy – heat pump central hot water system composes basically
        The solar energy – heat pump central hot water system’s key component for the solar energy collector and the solar energy auxiliary heating air source heat pump unit, other supporting facilities and the conventional central hot water system is the same, including solar energy circulating pump, hot water heating link pump, heat interchanger, hot water tank and controller and so on. As shown in Figure 1.

        1.2 solar energy auxiliary heating air source heat pump unit
        1.2.1 solar energy auxiliary heating air source heat pump unit principle of work
        In order to cause the air source heat pump in the low temperature environment highly effective, stable, the reliable movement, the domestic and foreign numerous Scientific research Unit and the Production enterprise have carried on the research and development and the improvement, induces mainly has three ways. First, depends upon the outside auxiliary heat source to enhance the heat pump low temperature system thermal properties, for instance enhances the heat pump system hot water leakage temperature through the electric heating, to use the burner auxiliary heating chamber external heat exchanger, to lay around the compressor changes the regeneration material increases under the low temperature condition system hot movement output and so on; Second, enhances heat pump’s low temperature system thermal properties through the improvement refrigerant circulatory system, for instance uses the two-stage compression the air source heat pump, among supposes restores vital energy return route’s air source heat pump and so on; Third, uses the frequency conversion system, under the low temperature operating mode lets the compressor high speed work increase the working substance circulation, simultaneously prevents to the compressor working chamber spray its overheated, thus enables the heat pump unit the normal operation.
        The solar energy auxiliary heating air source heat pump unit is produces based on the above first way, as shown in Figure 2. Increased an auxiliary heat interchanger on unit’s evaporator. Heat pump when low temperature environment system hot movement, is higher than the ambient temperature the solar energy hot water to flow through this auxiliary heat interchanger, with will enter evaporator’s outside air to carry on the interchange of heat to enhance its temperature, thus causes the refrigerant to evaporate the heat absorption in the relatively high environment, enhanced the vaporization temperature, improved compressor’s working condition.
   ¦lt;br />         2nd, solar energy auxiliary heating air source heat pump unit schematic drawing
        1.2.2 solar energy auxiliary heating air source heat pump unit performance characteristic [7]
        Compares with the ordinary air source heat pump, the solar energy auxiliary heating air source heat pump unit moves under the low temperature operating mode has the following several obvious characteristics:

        (1) COP remarkable enhancement
        Under the same ambient temperature, the solar energy auxiliary heating enables the refrigerant system’s vaporization temperature to enhance, unit’s system thermal properties coefficient ordinary air source heat pump unit had the distinct enhancement, the heat pump system thermal properties coefficient along with vaporization temperature change situation as shown in Figure 2.

        (2) prevents the evaporator rime, reduces the defrosting time
        As a result of the auxiliary heat source’s heating function, enhanced entered evaporator’s air temperature, caused its rime the possibility to reduce, like this might prevent the evaporator surface rime, caused it maintains the high heat transfer efficiency, simultaneously, the unit the frost number of times and the time also greatly reduced, might save the massive electrical energies, and guaranteed the heat pump unit continuously uninterrupted movement.

        (3) improves the air conditioning compressor working conditions, the extension unit service life
        When the ambient temperature is low, the air conditioning compressor’s compression ratio elevates suddenly, compressor’s discharge temperature will surpass the compressor permission frequently the operating region, will thus cause the compressor frequently to open stops, will be unable the normal work, continuously for a long time hence, will damage compressor’s overall performance, will reduce air-conditioning plant’s service life. Takes the auxiliary heat source through the solar energy to enhance the system vaporization temperature, indirect improvement compressor’s working conditions, not only solved the compressor under the outside low temperature environment not to be able the normal work question, and might make the entire heat pump unit the service life to lengthen effectively.

        1.2.3 solar energy auxiliary heat interchanger’s design
        The auxiliary heat interchanger located at vapor-recompression evaporator’s flank, as a heat pump unit’s part and the heat pump unit synchronization design production, uses with the evaporator similar outlook size and the material quality finned tube heat interchanger. The auxiliary heat interchanger’s heat transfer area, the air through the temperature rise and with vapor-recompression evaporator’s spacing should auxiliary thermal which, the solar energy water temperature, the ambient temperature and heat pump unit parameters and so on vaporization temperature, platoon amount of wind may provide according to the solar energy collector carry on the design calculation.

        1.3 solar energy collectors
        At present the solar energy collector which usually uses in the solar energy hot water project mainly has the plate solar energy collector, the entire glass vacuum tube collector, the U tubular vacuum tube collector, the heat pipe type vacuum tube collector and direct-current type vacuum tube collector five kind of [8]. Regarding the annual use’s quite large-scale solar energy central hot water system, the request solar energy collector should have certain bearing pressure ability, compared with the Gaoji thermal efficiency, compared with the small pipeline resistance, anti-frozen ability, easy to maintain. In these kind of solar energy collector, entire glass vacuum tube collector, although the hot collection thermal efficiency is high, the market share is big, but because of it cannot the bearing pressure movement, easy crack as a result of freezing, is not suitable uses in the big area solar energy hot water system, the major part serves as the home use solar-powered water heater’s collection hot part. Other four kinds are the metal absorber solar energy collectors, may the bearing pressure movement, be suitable in applies in the large-scale solar energy hot water project.

 Similar as geothermal heat pump, geothermal power station can produce heat and electric from the ground heat.

Besides production massive hot water, these 6 power plant year power rate 84 megawatts. Each power plant construction cost 30 – 6,000,000,000 Iceland Koruna (5000 – 90,000,000 US dollars), in the seat of honor power plant two years are completed the production.

In recent years, The German government increased dynamics development not to release the greenhouse gas unceasingly the energy technology. At present this kind of green energy’s cost is fossil fuel two times.

We lead you to go to northeast Russia the Kamchatka Peninsula to understand, how using geothermy this cost inexpensive and clean environmental protection energy.
 
The volcanic activity causes the ground water to warm unceasingly. If the hot ground water flows out the ground after the mouth, forms the hot spring (hot spring); If the hot ground water turns the vapor, but intermittently blowout, then forms geyser (geyser)., no matter is the hot spring or the geyser, is the geothermal resource.
 
Northeast Russia in Kamchatka Peninsula’s Moot Knoff Si gram mountain valley, because the volcanic activity is frequent, therefore in the mountain valley the geothermal resource is rich.
 
In the 1970s the early time, how did the scientists start to study transform here rich geothermy the electrical energy, served for .2000 years for the humanity, Moot Knoff the Si gram mountain valley geothermy power station constructs finally.

Geothermal power generation’s principle and the general thermoelectricity generation are similar, namely vapor impetus power set electricity generation which produces using the geothermy. The research indicated that about 2 kilometers place drills a hole downward from the surface, the collection gushes out the drill hole vapor to be able to obtain the cost inexpensive and the clean environmental protection electrical energy.

Vladimirsky · Puluohuoluofu geothermy power station higher managements: If you must calculate ton petroleum the price, now is probably 10,000 to 12,000 rubles is approximately equal to 400 to 470 US dollars, the combustion petroleum obtains the steam cost and the geothermy has the steam cost to have no way to compare.

Now, Moot Knoff the Si gram geothermy power station’s power rate already accounted for the Kamchatka Peninsula electric quantity more than 30%. The scientist indicated that this area’s energy potential is also very big.

Yilinna · Luo multi-Mankey geothermy Holding company spokesperson: According to forecast that Moot Knoff a Si gram mountain valley the geothermal energy has 300 megawatt electrical energies, if the future will construct second third, the geothermy power station’s plan can become the reality, then can supply the complete electrical energy which the entire Kamchatka Peninsula will need.

In fact, Moot Knoff a Si gram mountain valley also has a potential not to obtain the development, that is a tourism. The convenience transportation, has the medical effect hot spring, the geyser natural marvelous sight, but also has the blue color, the brown and so on each kind of color soil, is Moot Knoff the Si gram mountain valley development tourism advantage. But the Local government indicated that continues to develop and the effective use geothermy, will transform the energy, will be the present primary mission.

In fact, the foreign capital invests our country geothermal energy source the phenomenon to see not much at present. The Chinese petrochemical and the Northern Europe financial group Gerry Telier Bank’s cooperation, sounded the foreign capital to march our country geothermal energy source the bugle.

Along with our country the strategic target implementation which shifts to the west, the mid-west area geothermy work obtained gradually strengthens, and has made the remarkable progress.

The geothermy also obtained the full use in the Olympic Games facility. in August, 2005 starts Beijing Industrial university stadium which constructs, total floor space 24383 square meters. This project belongs to the Olympic Games priority project. Uses in-depth geothermal resource to provide the heat source, the refrigeration uses the shallow layer geothermal resource to provide the heat sink, realizes the energy conservation environmental protection heating and the refrigeration.

At present, in aspects and so on geothermal power generation, heating, greenhouse, cultivation, recovery medical service, extraction industrial chemicals, traveling as well as bottled mineral water has obtained the widespread use.

It is known that our country plans to 2020 from present 7% enhances the renewable energy source in the energy total quantity proportion to 15%, the government vigorously is also supporting the development wind energy and the solar energy, the corresponding investment also rapidly grows, but hot geothermal energy source’s and so on crag, hot water, hot vapor prospecting work actually progress sluggishly.

An installed capacity is 1 megawatt geothermal power generation project construction cost about 3,000,000 US dollars. The profession analyst indicated that because the soaring investment has limited the geothermal energy source development, this profession needs to obtain the policy support.

Industry in the expert indicated that our country so far did not have the concrete policy impetus geothermal energy source development, the geothermal energy source to look like the wind energy to obtain the fast development equally with difficulty, the country should simplify the supervision structure as well as practice the finance to drive the measure promotes the geothermal energy source development.