【 Weak current College 】 the air conditioning with cooling technology law questions and answers (6)---Power By 【 China power house network 】

68, when the temperature t rise, wet air enthalpy h (D). (A) (B) (C) unchanged (D) not necessarily 69, the design code for comfort air conditioning in summer indoor relative humidity parameters provided for in (B) (A) 40% ~ 60% (B) 40%-65% (C) 45% ~ 60% (D) 45% to 65% 70, in calculating the air conditioner refrigeration system load, set of 2 units of equipment accident rate correction factor value is a (D). (A) (B) 1.12 1.00 (C) 1.30 (D) 1.4071, in computer air conditioner refrigeration system load, for three units of equipment accident modification factors for evaluates to (B) (A) (B) 1.12 1.00 (C) 1.30 (D), General Office of 1.4072 comfort air conditioning budget classification index evaluates to (C) W/m2. (A) 105 ~ 145 (B) 110 ~ 140 (C) 140 ~ 175 (D) 175 ~ 29073, Office building of comfort air conditioning estimates comprehensive index evaluates to (B) W/m ². (A) 95 ~ 115 (B) 110 ~ 140 (C) 130 ~ 160 (D) 140 ~ 17574, comfort air conditioning room ACH, should not be less than an hour (C) (big room). (A) (B) three times four times five times (C) (D) 6 75, through the electric heater of wind speeds should be controlled at (D) m/s. (A) 3 ~ 5 (B) 4 ~ 7 (C) 5 ~ 8 (D), 8 ~ 1276, the alcohol thermometers wrap one end of the gauze, gauze soaked in distilled water at the other end, the measured temperature is called (D). (A) the air temperature (B) dew-point temperature (C) dry-bulb temperature (D) of the wet-bulb temperature 77, room air conditioner refrigeration with condensation occurs, at which point the evaporator surface air rendering (C) State. (A) is not saturated (B) close to saturation (C) saturation (D) supersaturated 78, air conditioners during the summer air, if the evaporator surface temperature above the dew point temperature, air treatment result (D). (A) moisture content decrease (B) (C) relative humidity reduces the moisture content increase (D) the relative humidity increases 79, maintain indoor temperature, use a dehumidifier to remove some water vapour in the air, indoor air condition is (C) (A) enthalpy value unchanged (B) dew-point temperature (C) dew-point temperature decrease (D) the relative humidity is 80, when the air through the heater to heat, improves the indoor temperature, indoor air (B) (A) moisture content decrease (B), relative humidity (C) relative humidity increases (D) moisture content increased 81, air is heated by air heaters, air temperature, air and moisture content (D). (A) (B) (C) to 0 (D) unchanged 82, indoor spraying below room temperature of tap water, the air temperature decreases, the consequences are (C) (A) reduction of indoor air thermal energy (B) reduction of indoor air temperature (C) indoor air heat unchanged (D) air relative humidity unchanged 83, the compressor discharge of refrigerants as (C) (A) (B) the saturated vapor dry saturated steam (C) hot steam (D) cold vapour 84, determine the amount of compressor (C) to (A) suction temperature (B) of the exhaust gas temperature (C) gas factor (D) refrigerant type. 85, (D) mm is not a domestic piston compressors series cylinder diameter. (A) 70 50 (B) (C) 100 (D) 15086, compressors of actual work cycle after four process, which in turn is (D) (A) air, exhaust, expansion, compression, (B) gas, bloating, gas, compressed, (B) inspiratory, compression, expansion, exhaust (D) gas, compressed, exhaust, expansive 87, crooked-crankshaft should use (B)-link. (A) integral (B) split (C) rotation-(D) eccentric-88, valve components of basic composition in the valve seat, valve plate, springs, lift limiter and (D). (A) nuts (B) of the bolt (C) release device (D) fasteners 89, Compressor drive mechanism is the piston, connecting rod and crankshaft and (A), etc. (A) coupling (B) motor (C) valve (D) 90, piston ring (D) for type compressor refrigeration compressor. (A) piston (B) Volution type (C) screw type (D) centrifugal 91, refrigeration compressor's main role is carried out on the refrigerant vapor (D) (A) (B) of the exhaust gas (C) compression (D) work 92, usually available (B) to reflect the work processes of refrigeration compressors. (A) (B) p-h figure p-v diagram (C) (D) T-s figure T-v figure 93, rings in the oil ring is (B) (A) oil (B) oil (C) hydraulic oil (D) seals 94, rings in ring serves to (D) (A) oil (B) oil (C) hydraulic oil (D) seals 95, screw compressors work process is characterized by (C) (A) low rotational speed, stable running (B) high speed of work, running shock (C) work process continuous, pulse phenomenon (D) there are clearance volume, the volume efficiency low 96, centrifugal compressor vanes are adjustable so that the air stream (A) (A) change direction (B) changes in volume (C) increase the pressure (D) reduce pressure 97, in use in the refrigeration compressor pump to (C) (A) external gear pump (B) Crescent gear pump (C) internal rotor pump (D) none of the above 98, the pressure oil control of energy regulation agencies by energy control valve, (B), uninstall oil cylinder, etc. (A) hydraulic pump (B) oil pipeline (C) top open bodies (D) valve plate 99, large air conditioning engineering or low-temperature refrigeration engineering should be used (D) compressor. (A) piston (B) screw type (C) Volution type (D) centrifugal 100, plate condenser heat transfer coefficient up to (D) W/(m2.0C) (A) 23~ 35 (B), 11 (C) 1200-1800 (D) 2000 ~ 3000101, heat transfer coefficient of air-cooled condensers to (A) W/(m2.0C) (A) 23-35 (B), 11 (C) 1200-1800 (D) 2000 ~ 3000102, set condenser heat transfer coefficient up to (B) W/(m2.0C) (A) 23-35 (B), 11 (C) 1200-1800 (D) 2000 ~ 3000103, when the condenser inside or outside temperature up to (C) oC above the fusible plug melting, release the refrigerant. (A) 50 (B) 60 (C) 70 (D) 80104, water-cooled condenser cooling water in and out of the way to (D) (A) forward the following out (B) mobility on the (C) down into the following (D) into the upper out 105, medium and low pressure steel pressure vessel pressure test of the test pressure PT lower bound to (C) (A) (B) 1.05P 1.00P (C) 1.15P (D) 1.25P106, and low pressure steel pressure vessel test of hydraulic test pressure PT lower bound to (D) (A) (B) 1.05P 1.00P (C) 1.15P (D) 1.25P107, pressure vessels, gas-tightness test pressure for (A) (A) (B) 1.05P 1.00P (C) 1.15P (D) 1.25P108, pressure vessels of varieties there are four categories, most large and medium refrigeration system condenser belongs to (B) (A) reaction pressure vessel (B) heat pressure vessel (C) separation of pressure vessel (D) storage pressure vessel 109, refrigerant inside the condenser (C) (is. (A) (B) too cold too hot (C) saturation (D) is not saturated 110, cooling water cooling the refrigerant condensers, condensing pressure (C) (A) decrease (B) increase the (C) unchanged (D) 0111, refrigerant saturation in the condenser, refrigerant dryness change to (B) (A) the process of dry degree increase (B) the process of dry degree decrease (C) do not change processes (D) that it is not clear, 112, inner balance expansion valve diaphragm role with temperature sensor on the refrigerant pressure Pg, evaporation pressure Po and spring equivalent pressure Pw. When the three forces lose balance, pg. Po + Pw, valve for liquid measure (B) (A) increase (B) (C) unchanged (D) said not clear 113, capillary usually uses the diameter of 200 mm (B) the pure copper tube production. （A）0.3~0.5（B）0.5~2.5（C）2.5~5（D）3~6