Economizer - Study guides, Class notes & Summaries

Main propulsion Boiler Operation Exam Questions With Correct Answers, Latest Updated 2024/2025 (GRADED Answers) The number of pounds of steam generated per hour at the pressure and temperature required for all purposes to develop contract shaft horsepower of the ship divided by the numbers of boilers installed is defined as? - Answer Boiler full power capacity Boiler overload capacity is normally what percentage of boiler full power capacity? - Answer 120% A pressure specified by the boiler...

ABSA B1 Study Bank Questions with 100% Correct Packaged watertube boilers capacities range from? a. 2300 kg to 65000 kg per hour b. 500 kg to 100 mg per hour c. 15 psi to 15000 kg per hour d. 65000 to 100000 kg per hour - Answer- A The main advantage of the packaged boiler is its a. small size b. compact design c. low cost D. quality steam - Answer- C Feild erected boilers have outputs of? A 75,000 kg/h B 100,000 kg/h C 100 mg/h D 150,000 kg/h or more - Answer- D Where electric p...

HVAC Test 1 Latest Update Graded A+ Absorption A refrigeration cycle where input energy is heat Adiabatic without gain or loss of heat Air Conditioning controlling air temperature humidity and quality Air Cooled Condenser a heat exchanger that transfers building heat to outdoor air Air Handler air moving equipment that can change air temperature humidity and quality BTU British thermal unit. 1 BTU will increase the temperature of 1 lb of water 1 degree F BTUH Rate of heat fl...

_________ are necessary for complete combustion correct answers time, temperature, mixture, and atomization if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ correct answers 214.7 a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. The blowdown is______psi correct answers 12 an oil cooler is commonly used with a(n) ________ when operating in conjunction with a turbo-generator correct answers steam turbine a boile...

FDNY Z51 RMO UPDATED Exam Questions and CORRECT Answers the efficiency of the refrigerant cycle is affected by the operation of the condenser. Of the following, a more efficient centrifugal compressor operation results from - Correct Answerlowering the condenser pressure In most semi hermetic compressors, the suction vapor is used for - Correct Answer- cools the motor The amount of refrigerant that flows through the orifices of an economizer is determined by the - Correct Answer- dif...

1. When repairing a refrigeration system, a swaging tool set would be used to carry out which of the following operations? Ans: Swaging tools can be used to expand an end of one tube to fit onto a tube of the same original outside diameter. 2. In a refrigeration system that is not protected by a water failure switch, if the cooling water to the condenser fails, what will be the result for protective purposes? Ans: the compressor will shut down by the action of the high-pressure cutout s...

The bottom blowdown on a boiler ___. - Answer- removes sludge and sediment from the mud drum Boiler tubes are sized using the ___. - Answer- outside diameter A boiler fusible plug is brass or bronze with a core of ___. - Answer- tin Spalling in a boiler refers to ___. - Answer- hairline cracks in the refractory Boiler horsepower is the evaporation of ___ lb of water/hr from and at a feedwater temperature of 212°F. - Answer- 34.5 A siphon installed between the boiler and the press...

Which of the following is NOT an advantage of an electric boiler over other boilers? Select one: a. More efficient b. Does not need water treatment c. Very compact d. Quiet operation - ANSWER b. Does not need water treatment Why does an electrode boiler not need a low water cut-off? Select one: a. The current flow stops if the water level drops below the electrodes b. The current in the electrodes ensures the water level is high enough c. There is no possibility of low water leve...

The efficiency of the refrigerant cycle is affected by the operation of the condenser. Of the following, a more efficient centrifugal compressor operation results from - answer-lowering the condenser pressure In most semi hermetic compressors, the suction vapor is used for - answer-cools the motor The amount of refrigerant that flows through the orifices of an economizer is determined by the - answer-difference between the high side and the low side pressure The instalation of an inline...

Power Engineering Part A Unit 11 Rated A+ Air Heater Transfer heat from the flue gas, or from steam, to the combustion air entering the boiler, to improve combustion efficiency Blowoff Valve Manually operated valve connected to a boiler for the intermittent discharge of boiler sediment, for lowering a boilers water level, or for draining a boiler Blowoff Vessel Vessel that intercepts, cools, and depressurizes boiler blowoff water, on order to protect municipal sewer systems Boi...