【 Weak current College 】 the air conditioning with cooling technology law questions and answers reference--9-Power By 【 China power house network 】

51, steam compression type ideal refrigeration cycle refrigerating factor and (D).
(A) (B) refrigerant evaporating temperature (C) condensing temperature (D) the temperature of evaporation and condensation temperature
52, using (A) refrigerant in the refrigeration system is not appropriate to adopt a heat cycle.
（A）R717（B）R12（C）R22（D）R502
53, steam compression refrigeration cycle of actual and ideal cycle is the greatest difference between (A)
(A) (B) the compression process of condensation process (C) cutting process (D) evaporation process
54, start the freon compressor before lubricating oil heating purposes is (C)
(A) raise the temperature of the lubricating oil (B) reduce the viscosity of the lubricant (C) make the lubricating oil into the escape of freon (D) to prevent freezing of lubricating oil
55, freon system water on freon refrigerant reacts to build (C)
(A) hydrogen (B) sulfuric acid (C) hydrochloric acid (D) mixed sediments
56, R11 as centrifugal vapor compression refrigeration system with refrigerant because of its (B)
(A) unit volume cooling capacity (B)-large (C) small (D) corrosion and lower in price
57, LIBR absorption chiller, LIBR absorption of water vapor is (B)
(A) (B) the heat absorption gives off heat (C) neither absorb nor heat release (D) will convert latent heat
58, in LIBR absorption chiller, add the octanol is (C)
(A) reduce the corrosion of lithium bromide solution (B) to reduce heat transfer performance (C) reduce the surface tension of lithium bromide solution (D) prevent the crystallization of LIBR aqueous solution
59, absorption refrigeration, heating time can make working on the solution (C).
(A) dissolved (B) (C) Group (D) warming up
60, vapour compression refrigeration system can get cold effect because the throttle arise the refrigerant (D) changes.
(A) Buck (B) temperature (C) energy (D)
61, the evaporator of the refrigerant is in (A) the following thermal vaporization.
(A) (B) the isothermal isobaric isothermal not isobaric (C) isobaric condensation (D) not isothermal not isobaric
62, total quality on the solution (B) heating, boiling point lower material is removed from the solution by vaporization.
(A) (B) absorber generator (C) high temperature heat exchanger (D) low temperature heat exchanger
63, single-effect LIBR absorption chiller of thermal coefficient (B) General
（A）0.5（B）0.7（C）1.0（D）1.2
64, ideal refrigeration cycle is (D)
(A) (B) reversible irreversible cycle (C) the Carnot cycle (D) reverse Carnot cycle
65, binary solution of the constant pressure of vaporization process is a (B)
(A) the cooling process (B) heating (C) fixed temperature process (D) temperature and ever-changing process
66, the following status parameters, (B) not wet air thermal status parameters.
（A）Pv（B）v（C）t（D）h
67, use normal thermometers measure air temperature, known as (C)
(A) the air temperature (B) dew-point temperature (C) dry-bulb temperature (D) of the wet-bulb temperature
68, when the temperature t rise, wet air enthalpy h (D).
(A) (B) (C) unchanged (D) do 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%~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）1.00（B）1.12（C）1.30（D）1.40
71, at computer air conditioner refrigeration system load, for three units of equipment accident modification factors for evaluates to (B)
（A）1.00（B）1.12（C）1.30（D）1.40
72, General Office of budget classification indicators comfort air conditioning evaluates to (C) W/m2.
（A）105~145（B）110~140（C）140~175（D）175~290
73, the 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）140~175
74, comfort airconditioning room ACH, should not be less than an hour (C) (big room).
(A) (B) three times four times five times (C) (D) 6 times
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）8~12
76, alcohol thermometers on gauze wrap one end to the other end of gauze immersed in distilled water, the temperature measured 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) supersaturation
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 unchanged (B) dew-point temperature (C) dew-point temperature decrease (D) the relative humidity is unchanged
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) increase the moisture content
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 theamount of compressor (C) the factors for
(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）50（B）70（C）100（D）150
86, compressor working 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, expansion
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) piston rings
90, (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) sealed
94, rings in ring serves to (D)
(A) oil (B) oil (C) hydraulic oil (D) sealed
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 low volumetric efficiency
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）1100（C）1200~1800（D）2000~3000