【 Weak current College 】 the air conditioning with cooling technology law questions and answers 10---Power By 【 China power house network 】

101, the heat transfer coefficient of air-cooled condensers to (A) W/(m2.0C)
（A）23~35（B）1100（C）1200~1800（D）2000~3000
102, set condenser heat transfer coefficient up to (B) W/(m2.0C)
（A）23~35（B）1100（C）1200~1800（D）2000~3000
103, 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）80
104, 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）1.00P（B）1.05P（C）1.15P（D）1.25P
106, medium and low pressure steel pressure vessel test of hydraulic test pressure PT lower bound to (D)
（A）1.00P（B）1.05P（C）1.15P（D）1.25P
107, pressure container-gas tightness test pressure for (A)
（A）1.00P（B）1.05P（C）1.15P（D）1.25P
108, pressure vessel, there are four types of varieties, the 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 of pressure vessels
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) 0
111, 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) that it is 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
114, ammonia filters using the mesh to (D) mm in 2 ~ 3-layer steel wire mesh.
（A）0.1（B）0.2（C）0.3（D）0.4
115, for liquid freon filters using the mesh to (A) mm copper wire net.
（A）0.1（B）0.2（C）0.3（D）0.4
116, used for filtering gas freon filters using the mesh to (B) mm copper wire net.
（A）0.1（B）0.2（C）0.3（D）0.4
117, expansion valve opening and evaporation temperature is (A)
(A) evaporation temperature high opening large (B) evaporation temperature high opening small
(C) evaporation temperature low open degree (D) after the opening set unchanged
118, refrigeration equipment, with the heat load changes, evaporator for fluid should be (A).
(A) increase the thermal load for volume increase (B) heat load reduction for volume increase
(C) increase the thermal load for fluid (D) the amount of heat load reduction for unchanged
119, throttle body comes in many forms, ammonia refrigeration system suitable for use (D).
(A) (B) by thermal expansion valves (C) thermal expansion valves (D) floating ball valve
120, throttle body comes in many forms, the appropriate unit air conditioner (B).
(A) (B) by thermal expansion valves (C) thermal expansion valves (D) floating ball valve
121, throttle body comes in many forms, household refrigerator appropriate (A).
(A) (B) by thermal expansion valves (C) thermal expansion valves (D) floating ball valve
122, the refrigerant to (D) for freon system, generally do not use a heat cycle.
（A）R12（B）R502（C）R113（D）R22
123, single-stage compressor maximum compression ratio should not exceed (C)
（A）5（B）6（C）8（D）10
124, single-stage freon compressor maximum compression ratio should not exceed (D)
（A）5（B）6（C）8（D）10
125,-vapour compression refrigeration system can only be reached by evaporating temperature (B) oC.
（（A）-30~-50（B）-20~-40（C）-10~-30（D）-10~-20
126. when condensation temperature 40oC, R717 single-stage compressors can achieve minimum evaporation temperature oC for (A).
（A）-19.5（B）-29.8（C）-31（D）-31.5
127, when condensation temperature 40oC, R12-stage compressor reach a minimum evaporation temperature (C) oC.
（A）-19.5（B）-29.8（C）-31（D）-31.5
128, when condensation temperature 40oC, R22-stage compressor reach a minimum evaporation temperatures (D) oC.
（A）-19.5（B）-29.8（C）-31（D）-31.5
129, when the condensation temperature 40oC, R717 levels compressors can achieve minimum evaporation temperature oC for (B).
（A）-60（B）-62.5（C）-66（D）-74
130. when condensation temperature 40oC, R12 levels compressors can achieve minimum evaporation temperature (C) oC.
（A）-60（B）-62.5（C）-66（D）-74
131, when condensation temperature 40oC, R22-stage compressor reach a minimum evaporation temperatures (D) oC.
（A）-60（B）-62.5（C）-66（D）-74
132, a two-stage compression refrigeration system to ()
(A) producing a lower temperature (B) reduce the power consumption of the compressor
(C) reference refrigerating factor (D) to reduce the cost of refrigeration equipment
133, get-low temperature 70oC following, generally use (D) of the refrigeration system.
(A) single-stage compression (B) (C) compression between three levels of compression (D)-complex overlap
134, two-stage compression system consisting of multiple overlapping refrigeration system available (A) oC of evaporation temperature.
（A）-70~-90（B）-75~-110（C）-120~-150（D）-150~-170
135, two-stage compression system consisting of multiple overlapping refrigeration system available (B) oC of evaporation temperature.
（A）-70~-90（B）-75~-110（C）-120~-150（D）-150~-170
136, ternary complex stack of refrigeration cycles available (C) oC of evaporation temperature.
（A）-70~-90（B）-75~-110（C）-120~-150（D）-150~-170
137, in order to obtain the evaporation temperature-100oC, (C) for the appropriate combination of complex duplication cycle.
(A) single-stage + R13R22 (B) single-stage or two-level R290 + R13-(C) R22 levels + R13-stage or two-level (D) R22 levels + R13 R14 single stage, single +
138, in order to obtain-140oC evaporation temperature, (D) to the appropriate combination of complex duplication cycle.
(A) single-stage + R13 R22 (B) single-stage or two-level R290 + R13-(C) R22 levels + R13-stage or two-level (D) R22 levels + R13 R14 single stage, single +
139, air conditioner air, the air temperature drops below the dew point temperature, air and moisture content (C)
(A) no changes (B) (C) (D) 0
140, use R22 of air-cooled air-conditioning in summer refrigeration debugging, the exhaust pressure is approximately (B) Mpa.
（A）2.4（B）1.9（C）1.5（D）1.2
141, in the refrigerator refrigerant in the refrigeration system, in the evaporator of the State can be thought of as (D)
(A) isobaric condensation (B) isothermal not isobaric (c) not isobaric condensation (D) isothermal isobaric
142, temperate type refrigerators use ambient temperature to (B).
（A）10~32（B）16~32（C）18~38（D）18`43
143, three-star refrigerator temperature (D) 0C
（A）0（B）-6（C）-12（D）-18
144, high and low temperature and low pressure test equipment used (D) early refrigeration, low investment, cooling, but the higher operating costs.
(A) piston refrigeration unit (B) screw chiller (C) air refrigeration units (D) expendable refrigerant
145, the following (A) not be used for low temperature test equipment of expendable refrigerant.
(A) R13 (B) of dry ice (C) liquid carbon dioxide (D) liquid ammonia
146, mechanical reefer interior temperature adjustable range (D) oC.
（A）10~-10（B）-15~-18（C）4~-20（D）12~-24
147, mechanical freezers keeps the temperature inside the car (B) oC.
（A）10~-10（B）-15~-18（C）4~-20（D）12~-24
148, offshore fishing vessel refrigeration system freezing temperature oC for (), refrigerated temperature 2oC.
（A）-24~-12（B）-18~-15（C）-15~-10（D）-12~-6
149, (C) has a small size, cooling capacity, energy can be adjusted.
(A) water cooled condensing unit (B) piston compressor condensing unit (C) screw compressor condensing unit (D) half-hermetic compressor condensing unit
150, centrifugal chillers with cooling capacity ranging from KW (D).
（A）50~180（B）10~1200（C）120~2200（D）350~35000