Weak current College】 【heating basics 11 ask.

<br> I. What is heating? it from which parts »<br> <br> Central heating is a concentrated source of steam, hot water supply through a network or part of an urban area of production and use of living, it consists .of heating, heat, hot, hot user is composed of three parts. <br> <br> 2. What are the advantages of centralized heat supply? <br> <br> City Central heating system, is the city's economic and social development .of infrastructure, its level of development is the mark of urban modernization. The development of urban heating zone has become China's urban construction of a basic policy. <br> <br> Co-generation heating has advantages mainly and decentralized heating in comparison, in .concentrated form in several ways: 1, good value for money. For central heating boilers with high capacity, high thermal efficiency, can reach above 90%, while small decentralized heating boilers only 60% or lower. Therefore heating instead of dispersing heat together can .save 20-30% of energy. 2. good environmental benefits. A major source of urban pollution from coal direct combustion of carbon dioxide and dust. Central heating boilers capacity is big, has better dust removal equipment, using high-efficiency dust, dust .removal rate of up to 90-98%, or even higher, can effectively reduce urban pollution. 3, have good social benefits. City Central heating for easy living, saving precious urban construction, ease the city electricity have a tense situation. Qingzhou heating .although a late starter, but after several years of rapid development, the heating area to reach 100 million square meters of urban heating rate to 8.1%. In Qingzhou stride to the urbanization of the city central heating will get faster and better development. <br .> <br> III. the role of urban heating and the basic principles? <br> <br> Central heating is one of the urban infrastructure, conserve energy, reduce pollution, enabling production, convenient life overall economic efficiency, environmental and social benefits .. Urban heating and heating implementation guidelines and principles are carried out according to diversify the sources of heat, advanced technology, reasonable economy. Strictly limited new dispersion dispersion on the existing boiler house, to the gradual reconstruction of boilers, increase the periods heating rate. .<br> <br> 4. Central heating of construction funds to solve? <br> <br> According to NDC <1986> 22, documentation: "City Central heating building funds, you can take a variety of channels, a local .funds; the second is to raise funds to benefit unit; the third is from urban maintenance and construction tax out part of the funds benefit urban heating network building; fourth, the national energy-saving investment given part. Countries may take interest-free, .low-interest, discount, extended loan repayment periods, preferential policies to support the development of urban heating. <br> <br> 5. What is steam heating? what is a hot-water heating? <br> <br> Steam heating .is to steam as heating medium of heating system, whose main advantage is that: 1, steam temperature: room temperature increase faster 2, the customer actual heat directly through instrumentation for measurement of settlement 3, does not require the purchase of excessive thermal equipment, .small investment. The main drawback is that: 1, high-temperature steam direct heating required attention to safety 2, through the hydrophobic method heat, control of unreasonable would create waste. Hot water heating is to hot water as the heat heating system, the .main advantages of indoor heating temperature and humidity is moderate, the body feel more comfortable. The main disadvantage is the need for the acquisition or construction of thermal Exchange station and dual-circuit heat pipe and other facilities, a large investment. The heating units can .choose their own actual situation, but in accordance with national policy and practical about heating heating effect, or to encourage residents to adopt this type of hot water heating. <br> <br> 6. Central heating heating hot water can be used in? .<br> <br> Central heating pipes in hot water at high temperature and high pressure closed circulatory system in the conduction of heat media media, heating time to prevent corrosion of stainless steel pipes, valves, ensuring smooth, backwater cycle in the water to .have a certain amount of chemicals, the water quality meets the domestic water standards. Use the radiator in hot water can harm your health, but also may cause heating pipes in the water, the pressure to imbalances in the heating network system, resulting in partial .or whole heating systems cannot be stable heating, affecting other residents normal heating. <br> <br> 7. heating facilities may freely change? <br> <br> Cannot change. This is because: 1, central heating is a systematic project ., if arbitrary changes makes heating design parameters are changed, resulting in the radiator heat unevenly, affect the heating effects. 2, the most decorated officer did not have HVAC expertise, heating facilities changes, prone to interface, pipe slope to errors and other issues ., not hot, leakage and air-sealing, not only affect your heating effect, or even the whole cell cycle of the heating system. 3, decoration on the radiator packaging decoration that reduces heat distribution and to the maintenance of the trouble, not only .affect the heating effect, and when the radiator failure, you have to dismantle the decorative plates for maintenance, will bring you the unnecessary losses. To this end, remind you in decoration, design, HVAC professionals to ensure that your normal radiator heating and maintenance .. <br> <br> 8. unauthorized discharge on what impact the heating effect? <br> <br> 1, secretly placed water undermined the stability of hydraulic regime, the system generates empty phenomenon that allows air to enter the system air- .lock, causing the formation of local or even most of the residents there is thermal radiators. 2, secretly placed water will cause the thermal station satisfaction of cold water, heating temperature. 3, due to the system in water mixed with preservatives, after eating ., misuse can cause human poisoning or cause environmental pollution. <br> <br> 9. decoration of warm steam hood on heating effects? <br> <br> Now most of the users on the indoor heating for the decoration, the heat sink .with cover. However, the current epidemic of warm steam hood on heating effects are to varying degrees. 1, due to the warm steam cover at the bottom of the heatsink, and allow the heatsink Department seal around the air cannot flow impactThe indoor convection heat .effect, resulting in lower quality. 2, the heat sink was blocked in the hood, just stay out of the local area on air for radiant heat, thus reducing heat sink cooling area and thus affect the heating effects. <br> <br> .10. What are stolen thermal behavior? <br> <br> 1. the customer without authorization from the hot heat company online open interception of heat; <br> <br> 2. the customer without authorization will be steam or hot water heating .for external transfers; <br> <br> 3, customers without emission heating hot water system water. <br> <br> 11. heating facilities, use of property, the tenant which should be done when the change process? <br> .<br> Where the participation in the heating and residential users because migration cause heating facilities, use of property or the lessee changes, change both the heating units should be handled the relationship change procedures, heat supply to Qing dynasty in heat. These procedures are .omitted from the original hot heat indoor continue to burden. <br> <br> <br> <br>.