Weak current College】 【the air conditioning with cooling technology law questions and answers reference - 2-Power By】 【China power house network.

<br> 51, R134a and R12 of thermodynamic properties, in the proximity of the refrigeration appliance used R12, R134a R12 substitution can be used without requiring any changes to the device. (X) <br> 52, specific heat capacity is a measure .of the refrigerant properties, one of the advantages and disadvantages of important indicators. (∨) <br> 53, LIBR aqueous solution of the higher the temperature, the stronger the absorption capacity of the steam. (X) <br> 54, LIBR .aqueous solution of the higher the temperature, the stronger its corrosive. (∨) <br> 55, on a steam compression refrigeration cycle, the throttle supercooling refrigerant of before can improve circulation of refrigerating factor. (∨) <br> 56, on .a steam compression refrigeration cycle, and suction superheat can improve circulation of refrigerating factor. (X) <br> 57, in steam compression refrigeration system, you can use recuperator to improve its efficiency. (X) <br> 58, condenser, evaporator .temperature increases, its spread, the more calories, therefore, the refrigerating factor. (X) <br> 59, vapour compression refrigeration cycle, when evaporation temperature does not change, the condensation temperature, cooling capacity will decrease power consumption will increase, is .reducing refrigeration factor. (∨) <br> 60, steam compression refrigeration cycle, when the condensation temperature, evaporation temperature decreases, the cooling capacity will decrease power consumption will increase, reducing refrigeration factor. (X) <br> 61, vapour compression .refrigeration system, the compressor suction superheat with certain refrigerant vapour, prevents the occurrence of wet compressed. (∨) <br> 62, in the use of freon refrigerant in the refrigeration system, be sure to install the dryer, (growth) <br .> 63, in the use of ammonia as a refrigerant in the refrigeration system, make sure you do not have to be drier, (growth) <br> 64, just know that the temperature of evaporation, condensation temperature, can be used in the .refrigeration pressure enthalpy diagram on steam compression refrigeration cycle theory (saturated). (∨) <br> 65, because ammonia and water miscible, therefore there is no need to control ammonia water content. (X) <br> 66, absorption chiller of .refrigerants is boiling point different substance refrigerants pairs, where the low-boiling material for refrigerant, high boiling point of the absorbent. (∨) <br> 67, LIBR absorption chiller is LIBR in refrigerant. (X) <br> 68, LIBR .absorption chiller of evaporating temperature must be higher than 0oC. (∨) <br> 69, LIBR absorption chiller with vapor compression refrigerator (water-cooled) cooling capacity is the same, they are basically the same volume of cold water. (X) .<br> 70, refrigerant liquid cooling is designed to reduce the production of Flash units for gas and thereby increase the cooling capacity. (∨) <br> 71, single-stage ammonia absorption refrigeration system solution pump is the refrigerant vapor. (x .) <br> 72, absorption refrigeration, absorbent by absorption refrigerant solution, second solution to mix. (x) <br> 73, LIBR absorption chiller in generator heating LIBR aqueous solution, the solution of water heated to boiling to gas only 100oC. .(x) <br> 74, semiconductor refrigeration efficiency low, refrigeration temperature for less than the temperature below 0oC. (x) <br> 75, evaporator is the refrigerant saturation. (∨) <br> 76, compressed refrigerant requirements "dry .compression ", is a must in the dryness line x = 1 and compressed. (x) <br> 77, air moisture content is the content of water in the air. (x) <br> 78, dry air in nature, does .not exist, the air is humid air. (∨) <br> 79, under certain temperature, the amount of water vapor in the air in the House only has a maximum value. (∨) <br> 80, the lower the relative .humidity of φ, indicating the extent of the moist air drying. (x) <br> The larger the 81, relative humidity, the air φ moisture absorption capacity. (x) <br> 82, absolute humidity ρ v describes the air contained .in the actual amount of water vapor in the air conditioning works in greater use of ρ v this parameter. (x) <br> 83, relative humidity reflect the humid air deviation from saturation level and size of hygroscopic capacity. (∨) <br .> 84, dew point temperature is of moist air becomes saturated when temperature, air start dew temperature. (∨) <br> 85 d, moisture content and water vapour partial pressure Pv is both independent of humid air thermal parameters. (x) < .br> 86, saturated air dry-bulb temperature, wet-bulb temperature and dew point temperature are equal. (∨) <br> 87, wet air enthalpy includes sensible heat and latent heat. (∨) <br> 88, when the .temperature t rise, wet air enthalpy h must increase. (x) <br> 89, air treatment, the transfer of heat to the air terminal State and the initial state of enthalpy difference. (∨) <br> 90, when t rise ., wet air enthalpy h increase, or decrease depending on how the d. (∨) <br> 91 d, moisture content and atmospheric pressure B, should be based on different B values to choose different psychrometric chart. (∨) <br> .92, dew point temperature is wait enthalpy line and saturation line intersection corresponds to the temperature. (x) <br> 93, wet-bulb temperature and dew point temperature of trajectory is φ = 100% saturation line. (∨) <br> .94, initial state and the final State has different air state change process, as long as the ratio of heat and moisture are the same, change the direction the process is different. (∨) <br> 95, mixed status point C of the .blend State of the connection before the two split into two segments of length, and participate in two gas mixture is proportional. (x) <br> 96, low efficiency filters can filter out the air 1 ~ 10 μ m. (x) < .br> 97, air dew-point temperature with the relative humidity increases, relative humidity, dew point temperature is lowered. (x) <br> 98, refrigeration compressor lubrication is relying on the pump's work. (x) <br> 99, .small hermetic reciprocating compressors and rotary compressor shell internal belongs to the area of low pressure. (X) <br> 100, to the resurrectionCypriot refrigeration compressor belonging to volume compressors. (∨) <br>.