Weak current College】 【air-conditioning --- after-school exercise --- Power By】 【China power house network.

<br> one choice (the alternative answers for each question, only a consistent meaning of the questions.) <BR> 1. air humidity index is divided into absolute humidity, moisture content, saturated absolute humidity and relative humidity.. Humidity .of the air used () to represent.. <BR> A.. Absolute humidity <BR> B.. Moisture content <BR> C.. Saturated absolute humidity <BR> D.. Relative humidity <BR> .; <BR> 2. Central air conditioning system basic structure, which from (), air handling and energy distribution systems and automatic transmission control system composed of four subsystems.. <BR> A.. Refrigerator <BR> B. .. Compressor <BR> C.. Heating and Cooling System <BR> D.. Generator <BR> <BR> 3. Air-conditioning system according to the device from the situation can be divided into a centralized, independent ., and () and other three types.. <BR> A.. DC-type <BR> B.. Semi-centralized <BR> C.. Closed <BR> D.. Recirculation <BR> .<BR> 4. Fan coil air conditioning system, fresh air supply, there are three specific ways: ① natural infiltration through the room supply of fresh air gap; ② through the external walls of the room () supply of fresh air; ③ .through independent. New air system supplies fresh air.. <BR> A.. Duct <BR> B.. Washer <BR> C.. Refrigerant pipe <BR> D.. Cooling pipe <BR> < .; BR> 5. Washer is a versatile air-conditioning equipment, air heating, cooling, humidification, () and other treatment.. <BR> A.. Dry <BR> B.. Removal of harmful gases <BR> .; C.. Dehumidification <BR> D.. Oxygen <BR> <BR> 6. Washer effect of processing on the air, if the water temperature is greater than the dry bulb temperature ta, will make the air temperature, .dry bulb temperature and wet bulb temperature difference between the ().. <BR> A.. Increased <BR> B.. Reduce <BR> C.. Unchanged <BR> D.. May increase may reduce the .<BR> <BR> 7. Electric humidifier air humidifier types are () devices.. <BR> A.. Steam humidification <BR> B.. Water evaporation humidification <BR> C.. "Dry" .; steam humidification <BR> D.. Electric spray <BR> <BR> 8. Dehumidification air handling method () do not need to set up renewable systems.. <BR> A.. Liquid absorption method < .BR> B.. Solid absorption method <BR> C.. Liquid absorbed by wet <BR> D.. Cooling by wet <BR> <BR> 9. High-speed air conditioning system equipment is the main ( .).. <BR> A.. Induction unit <BR> B.. Radial distributor <BR> C.. Axial air distributor <BR> D.. Face air distributor <BR> Second, fill in the .blank (please enter your answer on the line.) 1. Air conditioning system from the system, the system and the system in four subsystems.. <BR> 2. Conditioning treatment can be divided by air conditioning, air conditioning and air conditioning ... <BR> 3. Air conditioning cooling capacity by divided into air conditioning units, air conditioning units and air conditioning units.. <BR> 4. The situation by dividing the source of air, air-conditioning system can be divided ., and the other three forms.. <BR> 5. Common refrigerator with refrigerator, refrigerator and so on.. <BR> 6. Air conditioning system consists of three separate pipeline cycle is the cycle, the cycle and the cycle. .. <BR> 7. Using air-conditioning on the form of air humidification, and so on.. <BR> 8. Air conditioning air filters can be classified according to the principle role of the filter, filters, and three types .of filters.. <BR> 9. Chilled water system is responsible for the preparation of the chilled water refrigeration equipment transported to the air handling equipment, generally can be divided into systems and systems.. Third, the term resolution (see text box .below the noun enter your answer.) 1.. Air enthalpy <BR> <BR> 2.. Air enthalpy <BR> <BR> 3.. Fan coil air conditioning system <BR> <BR> .4.. Air-conditioning <BR> <BR> 5.. Process Air Conditioning <BR> four essay questions <BR> 1.. What is the central air conditioning system?. Air-conditioning system operation and management .of the main what?. Central air conditioning system operation method of regulating what?. The answer】 【----------------------------- .---------------- .--------------------------------- .- <BR> central air conditioning system, centralized air handling equipment is set. composition of air conditioners, air handling the entire process carried out in air conditioners, and then transported through the air ducts and air distributor to each room, this air .conditioning system, also known as central air conditioning system.. Central air conditioning system service area, handling of air volume, technology is easier, and centralized device setup, management and maintenance convenience, can be adjusted according to seasonal changes in concentration, the lower .operating costs, which in the modern large buildings. to use more of this type of air conditioning system.. <BR> Common central air conditioning system: ① single-duct central air conditioning system, only set an air duct.. < .BR> ② centralized dual duct system, with two air supply pipe or two air conditioners.. <BR> Central air conditioning system operation adjusted as shown below.. Dew point adjustment means adjusting the content of the control ① change <BR> .heating (cooling) air heat <BR> ② adjust to the new air conditioning return air ratio <BR> ③ washer (or heat) the water temperature <BR> <BR>. ① regulation valve control coils with chilled water .or hot water in the flow <BR> ② fresh air bypass valve adjustment, change the heating or cooling fresh air ratio control <BR> <BR> humidifier dew point temperature <BR> ② ① controlled delivery. air vapor pressure .<BR> ③ moisture solid or liquid agent by wet <BR> <BR> air volume control adjust fan speed <BR> ② ① regulate air flow control valve <BR> --------- .- .----------------------------------------------- .--- .-------------------< BR> <BR> 2.. What fan coil air conditioning system consists of components?. The water and fresh air .supply system which specific form?. Fan coil air conditioning system which method of regulation?. What are the contents of the maintenance of fan coil?. The answer】 【---------------- .----------------------------- .-------------------- .---------------< BR> fan coil air conditioning system consists of one or more fans. coil units and cold and heat source supply system components; fan coil units by the blower, coil .and filter components, as air-conditioning terminal units, scattered in all air-conditioned room installation, the air can be processed independently,. The air handling hot and cold water needed to concentrate prepared by air-conditioned room, through the provision of water .supply system to each fan coil units.. <BR> Its water supply system has three specific forms: ① dual plumbing systems; <BR> ② three main systems; <BR> ③ four-pipe system.. <BR> .; Fan coil air conditioning system supplies fresh air, there are three specific ways: ① natural infiltration through the room supply of fresh air gap; <BR> ② the external walls of the chamber to supply fresh air ventilation ducts; <BR> .③ through a separate air system. supply of fresh air.. <BR> Fan coil air conditioning system air volume control and water regulation are two ways to achieve the adjustment of temperature and humidity control.. Fan coil air conditioning system with greater flexibility ... The unit can operate independently without disturbing each other, to meet the needs of different air-conditioning; system layout flexible, independent air handling, can also be concentrated in the system set a new air system, the unit used as a secondary processing .equipment, which constitute the semi-centralized. air conditioning system.. Fan coil air conditioning system operation and adjustment as described below.. (1) fan coil system, the local operation mode adjustment adjustment adjustment adjustment of water content <BR> regulation .of water supply pipe fan coil units installed in two or three-way valve to increase or decrease the flow of cold water coils, changing rooms. the ability of air to absorb heat <BR> <BR> regulate air volume control fan speed ., speed changes in the speed of air flow through the coil changes have taken place, the room air heat exchange coil in the volume also changes <BR. "(2) fan coil system, full-year operating a new air conditioning when .the system does not assume the indoor sensible heat load, just the fresh air and room temperature to the same treatment can be.. Can not afford the new air of room temperature regulation, and bear all the indoor coil sensible heat load by local regulation to .meet the indoor coil temperature and humidity requirements.. When the system will bear the new building envelope air temperature caused by heat cold (hot) load, the new air handling equipment available in the second heating (cooling) devices concentrate increased (decreased) the .temperature of fresh air.. Two-pipe fan coil system, at the same time can only be supplied to all the same temperature of the water coil.. Run in transition seasons, with the outdoor temperature decreases, the new wind load regulation should focus .on energy, the new air temperature gradually increased to offset the heat load changes.. At this point, the water temperature entering the coil will remain unchanged, fan coil units by water regulation, elimination of indoor short-term load changes.. < .BR> Maintenance of fan coil follows the table below.. <BR> Visits to check the device name the project cycle, project maintenance projects <BR> filter air filter water to clean the surface dirt 1 case / month <BR> .coil fin-tube surface dirt cleaning 2 cases / year <BR> Biography. corrosion of the heat pipe cleaning 2 times / year <BR> case fan impeller dust contamination, noise cleaning impeller 2 times / year <BR> drip tray .drip tray drainage network cleaning dust and water dish 2 times / year <BR> pipeline. insulation structure, automatic valve repair ------------------------- .-------------- timely action .--------------------------------- .--------< BR> <BR> 3.. Air-conditioning system maintenance are what?. The answer】 【------------------ .--------------------------- .---------------------- .-------------< BR> air-conditioning systems maintenance, property management company is. air-conditioning system during operation problems in time, to ensure the normal operation of air conditioning system, making use .of the building functions can be maximized.. In the air-conditioning systems maintenance process, often encounter some system failure (see table below), maintenance and management personnel should carefully analyze the cause of the malfunction, and the system adjusts the air conditioning system .to meet the design requirements.. <BR> Air conditioning system failure causes and solutions, see the "three, air-conditioning system maintenance." .---------------- .---------------------------------- .--------------- .---------------< BR> <BR> 4. the maintenance of air conditioning units What are the main contents?. The answer】 【-------- .------------------------------------- .------------ .-----------------------< BR> the maintenance of air conditioning units including the inspection and cleaning air conditioning units ... <BR> Inspection and .cleaning air conditioning units need to be shutdown.. Check the cleaning and the bottom coil corrosion and bolt fastening, and in operation at the filling oil.. Open the access door, air-conditioning unit internal inspection, remove the filter, check the coil .and fan blades pollution levels, and wipe thoroughly, will filter the outside clean, dry up later installed a solid, if found. damage should be promptly repaired or replaced.. Internal inspection is completed, close the access door open on the valve, then .wipe clean and air-conditioning unit outside the body, then the stand-alone test.. Single test run must pay attention to current, motor temperature, the transmission of vibration and noise are normal.. After the end of the test to run stand .-alone test, run test to check air temperature and return air temperature is normal, the inlet valve and the valve action is correct and reliable, the temperature setting is sensitive and so on.. All normal, the air conditioners can be formally put into .use.. ----------------------------------------------- .--- .------------------------------< BR> <BR> 5. chiller plant equipment maintenance What are .the contents?. The answer】 【------------------------------------------ .--- .-----------------------------------< BR> low-temperature heat medium is heated .in the heat, the heat absorbed after., into a high-temperature heat carrier (hot water or steam), sent by pipeline interior, the heat released through the cooling device, so that the indoor temperature; cooling after the temperature decreases, into .low-temperature heat medium (low water), and through the recovery. return heat pipe, for recycling.. This constant cycle, so as to continuously heat from the heat source to the interior, to complement the interior of the heat loss to maintain .a certain indoor temperature.. <BR> Refrigeration room is the heart of the whole building air conditioning system, refrigeration system is the arrangement of the specialized equipment room.. Generally run the control room, chiller room, chilled water and cooling water pump .house and work (for) a storage room rooms.. Good room management is the key to the normal operation of air conditioning systems, equipment, property management is an important part.. The management of the main cooling room is installed in one of the .management and maintenance of refrigeration equipment, refrigeration room management objective is to ensure the safe operation of refrigeration equipment.. Refrigeration room management is the key to the running state monitoring system, once the system failure, take appropriate measures in time and send a signal to .ensure the safe operation of the system.. Of refrigeration equipment in the room to have a reliable maintenance measures, equipment maintenance in the following table.. Content maintenance requirements <BR> do maintenance equipment lubrication equipment lubrication ① set to do people, point ., qualitative, quantitative, time, and all three filters to filter <BR> ② <BR> ③ To meet the requirements. Always check the filter, oil level, oil temperature, oil pressure and fuel injection pump, abnormal should always check .in time <BR> ④ lubricating parts such as bearing temperature, the sound is normal <BR> ⑤ common valve screw and nut. between regularly oiling lubrication, not commonly used valve screw, nut Department, to oil sealed; apparatus should always .check the oil regularly clean or replace the <BR> <BR> good inspection tour of the engine room equipment. ① Check the relevant parts of the work pressure, temperature, liquid level <BR> ② Check the drive belt, fastening .the chain and the smoothness <BR> ③ Check the fastening bolt is loose, any abnormal vibrations in equipment operation and noise <BR .> ④ Check the control measuring instruments and the work regulators <BR> ⑤ Check the cooling system .work; check valve, brake and emergency alarm device is a good <BR> ⑥ check the security guards and railings of the check is good <BR> ⑦. whether the leakage of the sealing point <BR> <BR> .① civilized production must be responsible operator equipment, piping, instrumentation and careful job cleaning the environment, improve health, so no oil, no fouling, shaft. see the light, ditch bottom, the device see the insulation layer anti-corrosion qualities < .BR> ② <BR> ③ to maintain complete and timely elimination of run, run, drip, leak <BR> ④ fill each shift should run record, good equipment. The shift relief work <BR> ----- .-------------------------------------- .----------- .--------------------------< BR> <BR>..