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- A 1-ton HVAC unit will remove up to 12,000 Btu/h. What size unit is neededfor a house with a heat load of 28,576 Btu/h? (Round up to the next highereither half or whole number.)Roughly how many tons of cooling does it take to cool a space where the following equipment is stored but no people? The equipment is running continuously: 3 refrigerators - capacity, 3000 Watts each; 10 Fluorescent lights - 64 Watts each; Two copy machines - 1000 Watts each a. 3.5 tons, b. 10 tons, c. 1 ton, d. 0 tons, there is no need to cool equipment.In a refrigeration system there are 30 gallon per minute of water enters theevaporator at 25 degree C and leaves at 5 degree C. Find the tons of refrigeration is required.A. 45.07 TR B. 50.07 TR C. 55.07 TR D. 60.07 TR
- a.) What are the different types of fans used in air-conditioning systems? Discuss their applications and relative advantages and disadvantages. b.) Air from an air-conditioned room is exhausted into atmosphere through a grill. The quantity of air passes through the grill is 20 cubic meter minute. The duct area leading to the grill is 0.12 m2. The static pressure behind the grill is 3 mm of water. Find the effective area of grill exhausting the air into atmosphere. Take the pressure loss passing through the grill as 0.5 mm of water. Solve both a and b Asap please , I will rateA 73 W freezer has an EER of 10.0. How much heat is exhausted to the room in 2.9 hours? (include units with answer)6. What is the total cost of using the following at 9¢ per kilowatthour? a. 110W TV set for 4 h b. 1200W projector for 20 min c. 3000W washing machine for 1.5 h
- A newly installed refrigeration system produces 250 Btu/lb of cooling. Calculate the mass of refrigerant shall be used in the refrigeration system to have a rating of one ton of refrigeration. A. 1152 lb/day B. 160 lb/hr B. 1780 lb/day D. 380 lb/hr2) A heat pump with the amount of heat of liquid refrigerant (mix) when it will enter the expansion of 480 Btu/lb. while the amount of heat from the refrigerant vapor after leaving the evaporator is 412 Btu/lb. What is the coefficient of performance (COP) if the heat amount of the superheated refrigerant after being compressed by the compressor has a value of 572 Btu/lb?pr and temperature decrease while the volume increase Which of the following does not help in collecting results in the mechanical heat pump? Select one: O a. Pressure gage O b. Flowmeter O c. Wattmeter O d. Receiver
- In an absorption chiller, _______is used to create the difference in pressures.Identify the number of needed tons of refrigeration effect (TR) should the exhibition center require in order for them to accommodate 4,000 attendees at an event. Take into consideration that the average human body generates a number of 400 BTUs in this question. Select the best answer. a. four TR b. eight TR c. six TR d. the correct answer is not stated in the choices. Identify the number of enthalpies that should be removed and can turn ice into a 450-gram of water that is sitting at a room temperature of 85 degrees Fahrenheit? ANS: _____ BTUAn auditorium of 150 seating capacity is conditioned for the given specifications. Succasshy snd Outdoor conditions .32°C and 65% R.H Required air inlet conditions.... .24°C and 55 % R.H. The quantity of air supplied .0.5 m /min/person. The required condition is achieved first by cooling and dehumidifying and then by heating. Find the following: a) the capacity of the cooling coil in tons of refrigeration b) the capacity of heating coil in kW. c) By-pass factor of the heating coil if the surface temperature of the coil is 22°C.