Weak current College】 【ground source heat pump system (3) --- Power By】 【China power house network.

<br> FAQ discussion <br> 1. why the ground source heat pumps in the United States, Europe and China, particularly in recent years as more and more users know that the market has become increasingly active? <br> Partly because worldwide ever .more concerned about energy, the environment and sustainable development issues, mainly due to China coal energy structures has resulted in extremely severe air pollution, therefore, to achieve sustainable economic development, must learn as much as they can use clean, renewable energy, energy efficiency .must be increased, but both in the winter heating, and refrigeration and air conditioning in summer's heat pump system is a good option; on the other hand is a ground source heat pump system after years of research, the technology has been very mature, but .after years of demonstration and practice, confirmed the ground source heat pump system with many benefits: energy conservation, comfort, security, performance, stability, cleaning, use a flexible, etc. <br> 2. water-loop heat pumps (WLHP) .systems and ground-source heat pump (GSHP) system what? applies to occasion? <br> Both are available through the water-source heat pump water-air heat pump or water-water heat pump system for buildings with heat or cold, the .difference is WLHP system generally refers to the use of cooling water and boiler maintenance throughout the winter and summer season are water supply temperature stability of the system, but GSHP system is commonly referred to through the use of groundwater, ground heat exchanger systems, surface water .or ground heat exchanger system with cooling towers, boilers combined forms of maintenance of water supply temperature stability of the system. <br> For what WLHP system is suitable for the occasion, a study finds that simple cooling or heating of pure water-loop heat .pump selection is unreasonable; for both refrigeration and heating needs air-conditioning building, when its internal residual heat small or large, energy-saving effect using WLHP system was not obvious that only when the unit of heat and water-source heat pump absorption of .calories is similar with significant energy saving advantages. For a particular building, designers must according to cooling load and thermal load curve, use features, functionality, environment, and many other factors in evaluating whether the system using WLHP. energy-saving, Generally, .the following situations may consider using WLHP: ① has low grade solid waste heat can use; ② building at the same time there is a need for refrigeration and heating; cooling capacity, and also calls for independent metering of electricity, use of time, individual .room or area often needed at night or on holidays independent use of the building. <br> Ground source heat pump system in use, for a decentralized system, similar to the above water-loop heat pumps; and for centralized system, which is focused .on building the room with cold water or hot water, the broader the scope, especially suitable for Office buildings, schools, and etc. <br> 3. on several ground-source heat pump system in engineering application review <br> 1) direct .use of underground water source heat pump system: its biggest advantage is very economic, small footprint, but bearing in mind that you must meet the following criteria: good water quality; water-rich; in line with the standards. <br> 2) .underground of ground source heat pump system: for vertical pipe system, its advantages are: smaller land occupation, pipeline and pumping power, its disadvantage is the high cost of drilling; for a horizontal tube system, its advantages are: installation costs than the vertical .pipe system, widely used, the user is easy to grasp, the drawback is: covers an area of large, high-impact affected by surface temperature, pump power consumption. <br> 3) surface water heat pump: its advantages are: in .the 10 m or deeper Lake, offers 10 ℃ direct refrigeration, than the underground system investments to small, low power consumption of pump, high reliability, low maintenance requirements, low running costs, in warm regions, water can do the heat source, the .drawback is: in a shallow lake, coil can easily be damaged due to temperature changes, will reduce the efficiency of the unit. <br> 4) boiler / cooling towers and the underground a hybrid combination of the heat pump system: suitable for a .small space, cannot alone take underground heat system for buildings, cooling towers and closed-loop system for refrigeration, combining cost savings; the fact that the system is efficient, low-cost. <br> 4. the running costs of ground source heat .pump? economy? <br> This is the user most concerned about, is also the easiest question, however, is by far the most difficult to answer a question. Because of the influence of heat pump uses the economy many factors, such as price ., user behavior, or residents, as well as the climatic conditions such as abnormal heat or cold season, and other factors. Especially in China time is not long, the actual economics of work remains to be done, there are difficult to give a more .accurate answer. Because the United States and other developed countries in the engineering application of heat pump has at least ten years of history, may wish to draw on its experience. According to EPA environmental protection organization in the world of a report on the report of .the air conditioning future conclusions: ground source heat pump technology for domestic residents comfortable, reliable and efficient energy-saving at the same time, will be reduced energy consumption and environmental pollution is a major strength. According to EPA estimates, design and install good ground .source heat pump, on average, you can save users 30-40 per cent of the running of the heating refrigeration and air conditioning. <br> Example: beleyt ground source heat pump unit <br> A, ground source heat pump unit in brief .: <br> Ground source heat pump (ground.source.heat-Pump) (also known as the ground source heat pump, central air conditioning) is the use of Earth's solar resources stored as heat and cold sources, to be able to reset .the transformation of heating refrigeration and air conditioning systems. It leverages underground soil or ground water at ambient temperature relatively stable characteristics: <br> Winter: when a unit in the heating mode from the soil / water absorption of heat, electric-driven compressor and .heat the Earth's heat is concentrated, and a higher temperature released into the room. Summer: when a unit in the refrigeration mode, from the extraction of soil / water cooling capacity, run through the unit's cooling capacity will be fed into the indoor concentration, .while indoor thermal emissions into soil / water, reach the purpose of the air conditioner. Ground source heat pump air conditioning 1912 originated in Europe, has now developed into a very advanced and practical technology. Currently, environmental protectionTo the attention of the international community in .General, more and more stringent environmental requirements, coupled with physical energy (such as oil, natural gas) prices rising, prices and other factors gradually reducing, makes it more likely due to the use of advanced technology and selection of more energy efficient operation. .Thus, in Europe and the widespread use of geothermal air-conditioning technology has been the concern of all sectors in China and are increasingly widely used. (Such as «Switzerland usage rates up to 96%) according to China's 18 February 2000 promulgating the civil .building energy management regulations "in article 4, unambiguous: the State encourages the building energy-saving technological progress, encourage the introduction of foreign advanced energy saving technologies ... Encourage the development of ... Solar, geothermal and other renewable energy application technologies .and equipment ... Air conditioning energy saving technologies and products. «Is geothermal energy as a major energy through advanced air-conditioning equipment will underground mine but not direct use of low energy use, become available high energy. It can meet the winter heating .and summer cooling needs, and can be used to produce hot water, bath water supply problems, full shows-one of the three with superior characteristics. True allows the user to experience the comfort star hotel! <br> Second, the unit works: .water-water and heating <br> Central air-conditioning utilization of groundwater (deep water, spring water and geothermal system tail water), surface water (river water, Lake, sea), domestic and industrial water (industrial equipment cooling water, emissions .from the production process of waste water), with the help of refrigeration cycle, through the consumption of small amounts of electrical energy, water resources in the winter will be in low-quality energy "draw" out of the operation of networks providing indoor air .-conditioning or heating system; in summer, the indoor heat away, and releases into water, in order to achieve the effect of air conditioning in summer. At the same time clever heat will be used to form part of the domestic hot water, not .only the master device of the COP value (energy efficiency ratio) is raising also solves the bath water supply problems. Unit by microcomputer control, no need for specialist unattended, automatic balancing energy demand, so that the host is always the best economy running. .So the system has a high energy efficiency ratio (1: 4.3-1: 5.8). <br>.